From 9f2306f76095cf81d299d0c977490803f5703c75 Mon Sep 17 00:00:00 2001
From: Servo WPT Sync <32481905+servo-wpt-sync@users.noreply.github.com>
Date: Sun, 15 Sep 2024 03:26:41 +0200
Subject: [PATCH] Update web-platform-tests to revision
 b'4c3d068f942231dc905ea283e4f82bd70801c37c' (#33461)

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
---
 .../FileAPI/blob/Blob-slice.any.js.ini        |  110 +
 .../console/idlharness.any.js.ini             |   18 -
 .../generated-content/content-081.xht.ini     |    2 +
 .../tables/table-footer-group-001.xht.ini     |    2 +
 .../tables/table-header-group-001.xht.ini     |    2 +
 ...ity-and-transform-animation-crash.html.ini |    2 +
 ...self-default-overflow-htb-ltr-htb.html.ini |   36 +
 ...self-default-overflow-htb-ltr-vrl.html.ini |   36 +
 ...self-default-overflow-htb-rtl-htb.html.ini |   36 +
 ...self-default-overflow-htb-rtl-vrl.html.ini |   36 +
 ...self-default-overflow-vrl-ltr-htb.html.ini |   42 +
 ...self-default-overflow-vrl-ltr-vrl.html.ini |   42 +
 ...self-default-overflow-vrl-rtl-htb.html.ini |   42 +
 ...self-default-overflow-vrl-rtl-vrl.html.ini |   42 +
 ...self-default-overflow-htb-ltr-htb.html.ini |   39 +
 ...self-default-overflow-htb-ltr-vrl.html.ini |   39 +
 ...self-default-overflow-htb-rtl-htb.html.ini |   42 +
 ...self-default-overflow-htb-rtl-vrl.html.ini |   42 +
 ...self-default-overflow-vrl-ltr-htb.html.ini |   36 +
 ...self-default-overflow-vrl-ltr-vrl.html.ini |   36 +
 ...self-default-overflow-vrl-rtl-htb.html.ini |   42 +
 ...self-default-overflow-vrl-rtl-vrl.html.ini |   42 +
 ...ce-keyframes-animating-filter-001.html.ini |    2 +
 .../css/css-cascade/at-scope-parsing.html.ini |   24 +
 .../css/css-cascade/scope-nesting.html.ini    |    3 +
 .../css-cascade/scope-shadow-sharing.html.ini |    2 +-
 .../color-computed-relative-color.html.ini    |    9 +
 .../color-valid-color-function.html.ini       |   99 +
 .../parsing/color-valid-hsl.html.ini          |    6 +
 .../parsing/color-valid-lab.html.ini          |   96 +
 .../parsing/color-valid-rgb.html.ini          |   12 +
 .../at-container-snapped-parsing.html.ini     |    2 +
 ...t-container-snapped-serialization.html.ini |    2 +
 .../at-container-stuck-parsing.html.ini       |    2 +
 .../at-container-stuck-serialization.html.ini |    2 +
 ...tainer-type-scroll-state-computed.html.ini |    2 +
 ...ner-type-scroll-state-containment.html.ini |    3 +
 ...ntainer-type-scroll-state-parsing.html.ini |    2 +
 .../scroll-state-initially-snapped.html.ini   |    2 +
 .../scroll-state-initially-stuck.html.ini     |    2 +
 .../scroll-state-snapped-change.html.ini      |    2 +
 ...ate-snapped-container-type-change.html.ini |    2 +
 .../scroll-state-snapped-wm.html.ini          |    2 +
 .../style-query-document-element.html.ini     |    2 +
 .../flex-basis-content-crash.html.ini         |    2 +
 .../aspect-ratio-intrinsic-size-008.html.ini  |    2 +
 .../aspect-ratio-intrinsic-size-009.html.ini  |    2 +
 ...ex-one-sets-flex-basis-to-zero-px.html.ini |    3 +
 .../justify-content-sideways-001.html.ini     |    2 +
 .../font-style-sign-function.html.ini         |    3 +
 .../generic-family-keywords-001.html.ini      |    6 +-
 .../parsing/masonry-slack-computed.html.ini   |   18 +
 .../parsing/masonry-slack-valid.html.ini      |   18 +
 .../line-clamp/webkit-line-clamp-049.html.ini |    2 +
 ...scrollbar-gutter-scroll-into-view.html.ini |    2 +
 .../sign-function-aspect-ratio.html.ini       |    3 +
 .../dynamic-available-size-iframe.html.ini    |    2 -
 .../css/css-syntax/urange-parsing.html.ini    |    3 +
 ...table-as-item-cell-percentage-001.html.ini |    2 +
 ...table-as-item-cell-percentage-003.html.ini |    2 +
 ...table-as-item-cell-percentage-004.html.ini |    2 +
 .../tentative/colgroup-col.html.ini           |    6 -
 .../css/css-tables/th-text-align.html.ini     |    2 -
 .../white-space-intrinsic-size-021.html.ini   |  102 +
 ...rameEffect-getKeyframes.tentative.html.ini |    2 +
 ...ustom-property-and-allow-discrete.html.ini |    6 +
 .../css/css-ui/text-overflow-021.html.ini     |    2 +
 .../css/css-values/attr-all-types.html.ini    |   65 +-
 .../css/css-values/attr-security.html.ini     |   36 +
 .../calc-infinity-nan-computed.html.ini       |    9 -
 ...alc-infinity-nan-serialize-length.html.ini |   15 -
 ...erflow-hidden-smooth-scroll-crash.html.ini |    2 +
 .../cssom-view/smooth-scroll-nonstop.html.ini |    6 +-
 ...ar-reference-foreign-object-crash.html.ini |    2 +
 ...ge-reference-foreign-object-crash.html.ini |    2 +
 .../dom/abort/abort-signal-any-crash.html.ini |    2 +
 .../encoding/encodeInto.any.js.ini            |  258 --
 .../encoding/idlharness.any.js.ini            |   19 -
 .../streams/stringification-crash.html.ini    |    2 +
 .../request-forbidden-headers.any.js.ini      |  252 --
 ...h-destination-no-load-event.https.html.ini |   11 +
 .../css-font-face.sub.tentative.html.ini      |    6 -
 ...-link-prefetch.https.optional.sub.html.ini |   66 +-
 ...lement-link-prefetch.optional.sub.html.ini |   44 +-
 .../content-visibility-crash.html.ini         |    2 +
 ...avigation-unload-same-origin.window.js.ini |    3 -
 .../traverse_the_history_5.html.ini           |    3 -
 .../manual/filters/svg-filter-lh-rlh.html.ini |    2 +-
 ....host.size.attributes.parse.minus.html.ini |    1 +
 .../getter.html.ini                           |   24 +
 ...nitiator-is-not-opener.https.window.js.ini |    1 +
 ...ocument-with-fragment-nonexistent.html.ini |    1 -
 .../rendering/dimension-attributes.html.ini   |  219 --
 .../tables/table-attribute.html.ini           |   22 -
 .../tables/table-row-group-height.html.ini    |    2 -
 .../tables/table-row-height.html.ini          |    2 -
 .../crashtests/fieldset-middleclick.html.ini  |    2 +
 .../sticky-content.html.ini                   |    3 -
 .../iframe_sandbox_popups_escaping-1.html.ini |    2 +-
 ...rame_sandbox_popups_nonescaping-2.html.ini |    2 +-
 ...rame_sandbox_popups_nonescaping-3.html.ini |    1 -
 ...ding-lazy-subframe-detached-crash.html.ini |    2 +
 .../non-active-document.html.ini              |    3 -
 .../input-valueasdate.html.ini                |    9 -
 .../input-valueasnumber.html.ini              |    9 -
 .../name-attribute.html.ini                   |    3 +
 ...wmodal-shadow-sibling-frame-crash.html.ini |    2 +
 .../imperative-invokers.tentative.html.ini    |   31 +
 .../parsing/DOMContentLoaded-defer.html.ini   |    3 +
 .../child-document-raf-order.html.ini         |    3 +
 .../prefetch-transfer-size-executor.html.ini  |    4 -
 .../prefetch-transfer-size-iframe.html.ini    |    4 -
 ...ple-observers-with-mutation-crash.html.ini |    2 +
 ...ine-boundary-around-empty-details.html.ini |    2 +
 .../webmessaging/with-ports/017.html.ini      |    4 +
 .../meta/FileAPI/blob/Blob-slice.any.js.ini   |  110 +
 tests/wpt/meta/MANIFEST.json                  | 3485 +++++++++++++----
 ...self-default-overflow-htb-ltr-htb.html.ini |   36 +
 ...self-default-overflow-htb-ltr-vrl.html.ini |   36 +
 ...self-default-overflow-htb-rtl-htb.html.ini |   36 +
 ...self-default-overflow-htb-rtl-vrl.html.ini |   36 +
 ...self-default-overflow-vrl-ltr-htb.html.ini |   42 +
 ...self-default-overflow-vrl-ltr-vrl.html.ini |   42 +
 ...self-default-overflow-vrl-rtl-htb.html.ini |   42 +
 ...self-default-overflow-vrl-rtl-vrl.html.ini |   42 +
 ...self-default-overflow-htb-ltr-htb.html.ini |   36 +
 ...self-default-overflow-htb-ltr-vrl.html.ini |   36 +
 ...self-default-overflow-htb-rtl-htb.html.ini |   42 +
 ...self-default-overflow-htb-rtl-vrl.html.ini |   42 +
 ...self-default-overflow-vrl-ltr-htb.html.ini |   36 +
 ...self-default-overflow-vrl-ltr-vrl.html.ini |   36 +
 ...self-default-overflow-vrl-rtl-htb.html.ini |   42 +
 ...self-default-overflow-vrl-rtl-vrl.html.ini |   42 +
 .../css/css-cascade/at-scope-parsing.html.ini |   24 +
 .../css/css-cascade/scope-nesting.html.ini    |    3 +
 .../color-computed-relative-color.html.ini    |    9 +
 .../color-valid-color-function.html.ini       |   99 +
 .../parsing/color-valid-hsl.html.ini          |    6 +
 .../parsing/color-valid-lab.html.ini          |   96 +
 .../parsing/color-valid-rgb.html.ini          |   12 +
 .../at-container-snapped-parsing.html.ini     |    2 +
 ...t-container-snapped-serialization.html.ini |    2 +
 .../at-container-stuck-parsing.html.ini       |    2 +
 .../at-container-stuck-serialization.html.ini |    2 +
 ...tainer-type-scroll-state-computed.html.ini |    2 +
 ...ner-type-scroll-state-containment.html.ini |    3 +
 ...ntainer-type-scroll-state-parsing.html.ini |    2 +
 .../scroll-state-initially-snapped.html.ini   |    2 +
 .../scroll-state-initially-stuck.html.ini     |    2 +
 .../scroll-state-snapped-change.html.ini      |    2 +
 ...ate-snapped-container-type-change.html.ini |    2 +
 .../scroll-state-snapped-wm.html.ini          |    2 +
 .../style-query-document-element.html.ini     |    2 +
 .../aspect-ratio-intrinsic-size-008.html.ini  |    2 +
 .../aspect-ratio-intrinsic-size-009.html.ini  |    2 +
 ...ex-one-sets-flex-basis-to-zero-px.html.ini |    6 +
 .../justify-content-sideways-001.html.ini     |    2 +
 .../font-style-sign-function.html.ini         |    3 +
 .../parsing/masonry-slack-computed.html.ini   |   18 +
 .../parsing/masonry-slack-valid.html.ini      |   18 +
 .../line-clamp/webkit-line-clamp-049.html.ini |    2 +
 ...scrollbar-gutter-scroll-into-view.html.ini |    2 +
 .../sign-function-aspect-ratio.html.ini       |    3 +
 .../css/css-syntax/urange-parsing.html.ini    |    3 +
 ...rameEffect-getKeyframes.tentative.html.ini |    2 +
 ...ustom-property-and-allow-discrete.html.ini |    6 +
 .../css/css-values/attr-all-types.html.ini    |   65 +-
 .../css/css-values/attr-security.html.ini     |   36 +
 .../cssom-view/MediaQueryListEvent.html.ini   |    3 -
 .../cssom-view/smooth-scroll-nonstop.html.ini |    6 +-
 ...h-destination-no-load-event.https.html.ini |    3 +
 ...tion-unload-cross-origin.sub.window.js.ini |    3 +
 .../getter.html.ini                           |   24 +
 .../iframe_sandbox_popups_escaping-1.html.ini |    2 +-
 ...rame_sandbox_popups_nonescaping-3.html.ini |    2 +-
 ...ding-lazy-subframe-detached-crash.html.ini |    2 +
 ...rm-during-planned-navigation-task.html.ini |    4 +
 .../disabled-003.html.ini                     |    2 +
 .../name-attribute.html.ini                   |    3 +
 .../imperative-invokers.tentative.html.ini    |   31 +
 .../test-navigation-type-reload.html.ini      |    6 +
 .../webxr/render_state_update.https.html.ini  |    2 +
 .../.github/workflows/check-workflow-run.yml  |   43 +
 tests/wpt/tests/.github/workflows/epochs.yml  |    7 +
 .../tests/.github/workflows/safari_stable.yml |   22 +-
 .../workflows/safari_technology_preview.yml   |   22 +-
 .../filereader_readAsArrayBuffer.any.js       |    1 +
 tests/wpt/tests/FileAPI/support/Blob.js       |   34 +-
 .../IndexedDB/idbcursor_continue_index.any.js |  113 +-
 .../idbcursor_continue_objectstore.any.js     |  103 +-
 .../IndexedDB/idbcursor_iterating.any.js      |  107 +
 .../tests/IndexedDB/idbcursor_iterating.htm   |  109 -
 .../IndexedDB/idbcursor_iterating_index.htm   |   53 -
 .../IndexedDB/idbcursor_iterating_index2.htm  |   53 -
 .../idbcursor_iterating_objectstore.htm       |   50 -
 .../idbcursor_iterating_objectstore2.htm      |   50 -
 .../WebCryptoAPI/generateKey/successes.js     |   30 +-
 .../img-src/css-filter-blocked.tentative.html |   26 +
 .../img-src/svg-use-blocked.tentative.html    |   24 +
 .../anchor-navigation-always-allowed.html     |   23 -
 ...hor-navigation-always-allowed.html.headers |    4 -
 .../child-navigates-parent-allowed.html       |   18 -
 ...hild-navigates-parent-allowed.html.headers |    4 -
 .../child-navigates-parent-blocked.sub.html   |   19 -
 ...-navigates-parent-blocked.sub.html.headers |    4 -
 ...-action-allows-navigate-to-allows.sub.html |   16 -
 ...-action-allows-navigate-to-blocks.sub.html |   16 -
 ...-action-blocks-navigate-to-allows.sub.html |   17 -
 ...-action-blocks-navigate-to-blocks.sub.html |   17 -
 .../navigate-to/form-allowed.html             |   16 -
 .../navigate-to/form-blocked.sub.html         |   19 -
 .../form-cross-origin-allowed.sub.html        |   16 -
 .../form-cross-origin-blocked.sub.html        |   19 -
 .../navigate-to/form-redirected-allowed.html  |   16 -
 .../form-redirected-blocked.sub.html          |   20 -
 .../navigate-to/href-location-allowed.html    |   17 -
 .../href-location-blocked.sub.html            |   20 -
 ...ref-location-cross-origin-allowed.sub.html |   17 -
 ...ref-location-cross-origin-blocked.sub.html |   20 -
 .../href-location-redirected-allowed.html     |   17 -
 .../href-location-redirected-blocked.sub.html |   20 -
 .../navigate-to/link-click-allowed.html       |   16 -
 .../navigate-to/link-click-blocked.sub.html   |   19 -
 .../link-click-cross-origin-allowed.sub.html  |   16 -
 .../link-click-cross-origin-blocked.sub.html  |   20 -
 .../link-click-redirected-allowed.html        |   16 -
 .../link-click-redirected-blocked.sub.html    |   19 -
 .../navigate-to/meta-refresh-allowed.html     |   16 -
 .../navigate-to/meta-refresh-blocked.sub.html |   20 -
 ...meta-refresh-cross-origin-allowed.sub.html |   16 -
 ...meta-refresh-cross-origin-blocked.sub.html |   20 -
 .../meta-refresh-redirected-allowed.html      |   16 -
 .../meta-refresh-redirected-blocked.sub.html  |   20 -
 .../parent-navigates-child-allowed.html       |   26 -
 ...arent-navigates-child-allowed.html.headers |    4 -
 .../parent-navigates-child-blocked.html       |   28 -
 ...t-navigates-child-blocked.html.sub.headers |    5 -
 .../spv-only-sent-to-initiator.sub.html       |   48 -
 .../navigate-to/support/delayed_frame.py      |   12 -
 .../support/form_action_navigation.sub.html   |   33 -
 ...orm_action_navigation.sub.html.sub.headers |    4 -
 .../support/href_location_navigation.sub.html |   17 -
 ...f_location_navigation.sub.html.sub.headers |    4 -
 .../support/link_click_navigation.sub.html    |   16 -
 ...link_click_navigation.sub.html.sub.headers |    4 -
 .../support/meta_refresh_navigation.sub.html  |   16 -
 ...ta_refresh_navigation.sub.html.sub.headers |    4 -
 .../support/navigate_parent.sub.html          |   18 -
 .../navigate_parent.sub.html.sub.headers      |    4 -
 .../support/post_message_to_frame_owner.html  |    6 -
 ...redirect_to_post_message_to_frame_owner.py |    6 -
 .../support/spv-test-iframe1.sub.html         |   19 -
 .../spv-test-iframe1.sub.html.sub.headers     |    4 -
 .../support/spv-test-iframe2.sub.html         |   14 -
 .../support/spv-test-iframe3.sub.html         |   12 -
 .../support/wait_for_navigation.html          |   14 -
 .../wait_for_navigation.html.sub.headers      |    4 -
 ...d-of-chain-because-of-same-origin.sub.html |   29 -
 .../allowed-end-of-chain.sub.html             |   28 -
 .../blocked-end-of-chain.sub.html             |   29 -
 .../cookieStore_getAll_arguments.https.any.js |   36 +
 .../cookieStore_get_arguments.https.any.js    |   34 +
 ...eStore_get_set_creation_url.sub.https.html |   86 +
 .../resources/helper_iframe.sub.html          |    7 +-
 ...ign-self-default-overflow-htb-ltr-htb.html |  141 +
 ...ign-self-default-overflow-htb-ltr-vrl.html |  141 +
 ...ign-self-default-overflow-htb-rtl-htb.html |  141 +
 ...ign-self-default-overflow-htb-rtl-vrl.html |  141 +
 ...ign-self-default-overflow-vrl-ltr-htb.html |  141 +
 ...ign-self-default-overflow-vrl-ltr-vrl.html |  141 +
 ...ign-self-default-overflow-vrl-rtl-htb.html |  141 +
 ...ign-self-default-overflow-vrl-rtl-vrl.html |  141 +
 ...ify-self-default-overflow-htb-ltr-htb.html |  141 +
 ...ify-self-default-overflow-htb-ltr-vrl.html |  141 +
 ...ify-self-default-overflow-htb-rtl-htb.html |  141 +
 ...ify-self-default-overflow-htb-rtl-vrl.html |  141 +
 ...ify-self-default-overflow-vrl-ltr-htb.html |  141 +
 ...ify-self-default-overflow-vrl-ltr-vrl.html |  141 +
 ...ify-self-default-overflow-vrl-rtl-htb.html |  141 +
 ...ify-self-default-overflow-vrl-rtl-vrl.html |  141 +
 .../anchor-center-htb-htb.html                |   24 +-
 .../anchor-center-htb-vrl.html                |   24 +-
 .../anchor-center-vrl-htb.html                |   24 +-
 .../anchor-center-vrl-vrl.html                |   24 +-
 .../anchor-parse-invalid.html                 |    2 +
 .../auto-margins-position-area.html           |   39 +
 .../chrome-365594098-crash.html               |   45 +
 ...lay-none-dont-cancel-pseudo.tentative.html |    5 +-
 .../animation-timing-function-invalid.html    |   15 +
 .../css/css-cascade/at-scope-parsing.html     |   18 +-
 .../tests/css/css-cascade/scope-nesting.html  |   34 +
 .../color-computed-relative-color.html        |    7 +
 .../parsing/color-valid-color-function.html   |   78 +-
 .../css-color/parsing/color-valid-hsl.html    |   27 +-
 .../css-color/parsing/color-valid-hwb.html    |    4 +-
 .../css-color/parsing/color-valid-lab.html    |   66 +-
 .../css-color/parsing/color-valid-rgb.html    |   25 +-
 .../at-container-snapped-parsing.html         |   80 +
 .../at-container-snapped-serialization.html   |   32 +
 .../at-container-stuck-parsing.html           |   85 +
 .../at-container-stuck-serialization.html     |   32 +
 .../container-type-scroll-state-computed.html |   16 +
 ...ntainer-type-scroll-state-containment.html |   34 +
 .../container-type-scroll-state-parsing.html  |   20 +
 .../scroll-state-initially-snapped.html       |   47 +
 .../scroll-state-initially-stuck.html         |   34 +
 .../scroll-state-snapped-change.html          |   55 +
 ...l-state-snapped-container-type-change.html |   84 +
 .../scroll-state-snapped-snap-changing.html   |   67 +
 .../scroll-state-snapped-wm.html              |   67 +
 .../style-query-document-element.html         |   23 +
 .../css/css-display/parsing/WEB_FEATURES.yml  |    3 +
 tests/wpt/tests/css/css-env/env-parsing.html  |   21 +
 .../aspect-ratio-intrinsic-size-008.html      |   13 +
 .../aspect-ratio-intrinsic-size-009.html      |   13 +
 .../flex-one-sets-flex-basis-to-zero-px.html  |   16 +-
 .../justify-content-sideways-001.html         |   20 +
 .../css-fonts/font-face-sign-function.html    |   25 +
 .../css-fonts/font-size-sign-function.html    |   16 +
 .../css-fonts/font-style-sign-function.html   |   16 +
 .../variations/at-font-face-descriptors.html  |    2 +-
 .../initial-letter-sign-function.html         |   17 +
 .../text-box-trim-float-clear-br-003-ref.html |    2 +-
 .../text-box-trim-float-clear-br-003.html     |    2 +-
 ...-trim-ignore-nested-text-box-edge-ref.html |   14 +
 ...-box-trim-ignore-nested-text-box-edge.html |   27 +
 .../parsing/masonry-slack-computed.html       |   31 +
 .../parsing/masonry-slack-invalid.html        |   24 +
 .../parsing/masonry-slack-valid.html          |   24 +
 .../reference/webkit-line-clamp-047-ref.html  |    2 +-
 .../reference/webkit-line-clamp-049-ref.html  |   21 +
 .../line-clamp/webkit-line-clamp-047.html     |    2 +-
 .../line-clamp/webkit-line-clamp-049.html     |   30 +
 ...w-auto-scrollbar-gutter-intrinsic-003.html |    2 +-
 ...scrollbar-gutter-scroll-into-view-ref.html |    0
 .../scrollbar-gutter-scroll-into-view.html    |    0
 tests/wpt/tests/css/css-ruby/inheritance.html |    2 +
 .../css-ruby/parsing/ruby-merge-valid.html    |    8 +-
 .../parsing/ruby-overhang-invalid.html        |   23 +
 .../css-ruby/parsing/ruby-overhang-valid.html |   19 +
 .../tests/css/css-ruby/ruby-overhang-ref.html |   16 +
 .../wpt/tests/css/css-ruby/ruby-overhang.html |   17 +
 .../css/css-scroll-snap/input/keyboard.html   |   18 +-
 ...-boundary-viewport-covering.tentative.html |   12 +-
 .../css/css-scroll-snap/multicol-001.html     |   27 +
 .../css/css-scroll-snap/multicol-002.html     |   59 +
 .../snap-to-empty-sized-element.html          |   51 +
 .../css/css-scroll-snap/support/common.js     |   32 -
 .../sign-function-aspect-ratio.html           |   16 +
 .../tests/css/css-syntax/urange-parsing.html  |    1 +
 .../table-as-item-cell-percentage-001.html    |   30 +
 .../table-as-item-cell-percentage-002.html    |   33 +
 .../table-as-item-cell-percentage-003.html    |   31 +
 .../table-as-item-cell-percentage-004.html    |   30 +
 ...KeyframeEffect-getKeyframes.tentative.html |   34 +
 .../custom-property-and-allow-discrete.html   |   54 +
 .../transition-timing-function-invalid.html   |    7 +
 .../tests/css/css-values/attr-all-types.html  |    8 +-
 .../wpt/tests/css/css-values/attr-crash.html  |   18 +
 .../tests/css/css-values/attr-security.html   |  137 +
 .../tests/css/css-variables/var-parsing.html  |   21 +
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 ...fetch-destination-no-load-event.https.html |   14 +
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 ...nterest-group-auction-data.https.window.js |  444 ++-
 .../tentative/resources/ba-fledge-util.sub.js |   47 +-
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 .../api/document-exit-fullscreen-twice.html   |   10 +-
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 .../html/canvas/tools/gentestutilsunion.py    |   15 +-
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 ...click-on-number-input-prevent-default.html |   51 +-
 ...nts-spin-button-click-on-number-input.html |   21 +-
 tests/wpt/tests/interfaces/css-fonts.idl      |    2 +-
 ...identities.idl => digital-credentials.idl} |    2 +-
 .../tests/interfaces/{FedCM.idl => fedcm.idl} |   17 +-
 .../wpt/tests/interfaces/ink-enhancement.idl  |    4 +-
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 .../tests/tools/certs/web-platform.test.key   |   52 +-
 .../tests/tools/certs/web-platform.test.pem   |  190 +-
 .../tests/tools/ci/check_for_updated_refs.py  |   47 +
 tests/wpt/tests/tools/ci/epochs_update.sh     |    2 +-
 .../ci/tests/test_check_for_updated_refs.py   |  106 +
 tests/wpt/tests/tools/requirements_mypy.txt   |    2 +-
 tests/wpt/tests/tools/requirements_pytest.txt |    2 +-
 tests/wpt/tests/tools/requirements_tests.txt  |    2 +-
 tests/wpt/tests/tools/wpt/testfiles.py        |    2 +-
 .../wptrunner/browsers/chrome_spki_certs.py   |    2 +-
 .../wptrunner/executors/executorchrome.py     |    3 +
 .../wptrunner/executors/executorwebdriver.py  |   30 +-
 .../tools/wptrunner/wptrunner/testrunner.py   |   47 +-
 tests/wpt/tests/webauthn/helpers.js           |    8 +-
 ...signal-all-accepted-credentials.https.html |  119 +
 .../signal-current-user-details.https.html    |   82 +
 .../signal-unknown-credential.https.html      |   74 +
 tests/wpt/tests/webcodecs/audio-data.any.js   |   14 +
 .../webcodecs/audio-decoder.https.any.js      |    8 +
 .../navigation_started/navigation_started.py  |   41 -
 ...on_started_initial_navigation_tentative.py |   55 +
 .../webdriver/tests/bidi/network/__init__.py  |   10 +-
 .../bidi/network/continue_response/cookies.py |    2 +-
 ...ps.any.js => byob_readtensor.https.any.js} |   74 +-
 .../dequantizeLinear.https.any.js             |  160 +
 .../inputs-are-not-modified.https.any.js      |   86 +
 .../conformance_tests/matmul.https.any.js     |   83 +-
 .../parallel-dispatch.https.any.js            |  214 +-
 .../quantizeLinear.https.any.js               |  156 +
 ...uffer.https.any.js => tensor.https.any.js} |  675 ++--
 tests/wpt/tests/webnn/resources/utils.js      |    8 +
 .../cumulativeSum.https.any.js                |   81 +
 .../destroyContext.https.any.js               |   48 +-
 .../destroyGraph.https.any.js                 |   38 +-
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diff --git a/tests/wpt/meta-legacy-layout/FileAPI/blob/Blob-slice.any.js.ini b/tests/wpt/meta-legacy-layout/FileAPI/blob/Blob-slice.any.js.ini
new file mode 100644
index 00000000000..57ce4dda486
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/FileAPI/blob/Blob-slice.any.js.ini
@@ -0,0 +1,110 @@
+[Blob-slice.any.worker.html]
+  [Slicing test: slice (2,1).]
+    expected: FAIL
+
+  [Slicing test: slice (2,2).]
+    expected: FAIL
+
+  [Slicing test: slice (2,3).]
+    expected: FAIL
+
+  [Slicing test: slice (3,0).]
+    expected: FAIL
+
+  [Slicing test: slice (3,1).]
+    expected: FAIL
+
+  [Slicing test: slice (3,2).]
+    expected: FAIL
+
+  [Slicing test: slice (3,3).]
+    expected: FAIL
+
+  [Slicing test: slice (3,4).]
+    expected: FAIL
+
+  [Slicing test: slice (4,0).]
+    expected: FAIL
+
+  [Slicing test: slice (4,1).]
+    expected: FAIL
+
+  [Slicing test: slice (4,2).]
+    expected: FAIL
+
+  [Slicing test: slice (4,3).]
+    expected: FAIL
+
+  [Slicing test: slice (4,4).]
+    expected: FAIL
+
+  [Slicing test: slice (5,1).]
+    expected: FAIL
+
+  [Slicing test: slice (5,2).]
+    expected: FAIL
+
+  [Slicing test: slice (6,0).]
+    expected: FAIL
+
+  [Slicing test: slice (6,1).]
+    expected: FAIL
+
+  [Slicing test: slice (6,2).]
+    expected: FAIL
+
+
+[Blob-slice.any.html]
+  [Slicing test: slice (2,1).]
+    expected: FAIL
+
+  [Slicing test: slice (2,2).]
+    expected: FAIL
+
+  [Slicing test: slice (2,3).]
+    expected: FAIL
+
+  [Slicing test: slice (3,0).]
+    expected: FAIL
+
+  [Slicing test: slice (3,1).]
+    expected: FAIL
+
+  [Slicing test: slice (3,2).]
+    expected: FAIL
+
+  [Slicing test: slice (3,3).]
+    expected: FAIL
+
+  [Slicing test: slice (3,4).]
+    expected: FAIL
+
+  [Slicing test: slice (4,0).]
+    expected: FAIL
+
+  [Slicing test: slice (4,1).]
+    expected: FAIL
+
+  [Slicing test: slice (4,2).]
+    expected: FAIL
+
+  [Slicing test: slice (4,3).]
+    expected: FAIL
+
+  [Slicing test: slice (4,4).]
+    expected: FAIL
+
+  [Slicing test: slice (5,1).]
+    expected: FAIL
+
+  [Slicing test: slice (5,2).]
+    expected: FAIL
+
+  [Slicing test: slice (6,0).]
+    expected: FAIL
+
+  [Slicing test: slice (6,1).]
+    expected: FAIL
+
+  [Slicing test: slice (6,2).]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/console/idlharness.any.js.ini b/tests/wpt/meta-legacy-layout/console/idlharness.any.js.ini
index f70ca97d163..136ed4d9f42 100644
--- a/tests/wpt/meta-legacy-layout/console/idlharness.any.js.ini
+++ b/tests/wpt/meta-legacy-layout/console/idlharness.any.js.ini
@@ -14,15 +14,6 @@
   [console namespace: operation dirxml(any...)]
     expected: FAIL
 
-  [console namespace: operation time(optional DOMString)]
-    expected: FAIL
-
-  [console namespace: operation timeLog(optional DOMString, any...)]
-    expected: FAIL
-
-  [console namespace: operation timeEnd(optional DOMString)]
-    expected: FAIL
-
 
 [idlharness.any.html]
   [console namespace: operation assert(optional boolean, any...)]
@@ -39,12 +30,3 @@
 
   [console namespace: operation dirxml(any...)]
     expected: FAIL
-
-  [console namespace: operation time(optional DOMString)]
-    expected: FAIL
-
-  [console namespace: operation timeLog(optional DOMString, any...)]
-    expected: FAIL
-
-  [console namespace: operation timeEnd(optional DOMString)]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/CSS2/generated-content/content-081.xht.ini b/tests/wpt/meta-legacy-layout/css/CSS2/generated-content/content-081.xht.ini
new file mode 100644
index 00000000000..b7e84a0ae3d
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/CSS2/generated-content/content-081.xht.ini
@@ -0,0 +1,2 @@
+[content-081.xht]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/CSS2/tables/table-footer-group-001.xht.ini b/tests/wpt/meta-legacy-layout/css/CSS2/tables/table-footer-group-001.xht.ini
new file mode 100644
index 00000000000..e1b457672a5
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/CSS2/tables/table-footer-group-001.xht.ini
@@ -0,0 +1,2 @@
+[table-footer-group-001.xht]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/CSS2/tables/table-header-group-001.xht.ini b/tests/wpt/meta-legacy-layout/css/CSS2/tables/table-header-group-001.xht.ini
new file mode 100644
index 00000000000..87a799872c1
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/CSS2/tables/table-header-group-001.xht.ini
@@ -0,0 +1,2 @@
+[table-header-group-001.xht]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/compositing/opacity-and-transform-animation-crash.html.ini b/tests/wpt/meta-legacy-layout/css/compositing/opacity-and-transform-animation-crash.html.ini
new file mode 100644
index 00000000000..a35c632d045
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/compositing/opacity-and-transform-animation-crash.html.ini
@@ -0,0 +1,2 @@
+[opacity-and-transform-animation-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html.ini
new file mode 100644
index 00000000000..026c19a077e
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html.ini
@@ -0,0 +1,36 @@
+[align-self-default-overflow-htb-ltr-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html.ini
new file mode 100644
index 00000000000..8b004f7f0a2
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html.ini
@@ -0,0 +1,36 @@
+[align-self-default-overflow-htb-ltr-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html.ini
new file mode 100644
index 00000000000..1dbdfb7753c
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html.ini
@@ -0,0 +1,36 @@
+[align-self-default-overflow-htb-rtl-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html.ini
new file mode 100644
index 00000000000..d550388774c
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html.ini
@@ -0,0 +1,36 @@
+[align-self-default-overflow-htb-rtl-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html.ini
new file mode 100644
index 00000000000..9474e97322e
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html.ini
@@ -0,0 +1,42 @@
+[align-self-default-overflow-vrl-ltr-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html.ini
new file mode 100644
index 00000000000..6da258669a4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html.ini
@@ -0,0 +1,42 @@
+[align-self-default-overflow-vrl-ltr-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html.ini
new file mode 100644
index 00000000000..f349bdd8736
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html.ini
@@ -0,0 +1,42 @@
+[align-self-default-overflow-vrl-rtl-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html.ini
new file mode 100644
index 00000000000..2cabe993c7d
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html.ini
@@ -0,0 +1,42 @@
+[align-self-default-overflow-vrl-rtl-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html.ini
new file mode 100644
index 00000000000..cd20ce6f9e8
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html.ini
@@ -0,0 +1,39 @@
+[justify-self-default-overflow-htb-ltr-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html.ini
new file mode 100644
index 00000000000..66dc2e352ab
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html.ini
@@ -0,0 +1,39 @@
+[justify-self-default-overflow-htb-ltr-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html.ini
new file mode 100644
index 00000000000..adde60d71df
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html.ini
@@ -0,0 +1,42 @@
+[justify-self-default-overflow-htb-rtl-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html.ini
new file mode 100644
index 00000000000..9317fb60486
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html.ini
@@ -0,0 +1,42 @@
+[justify-self-default-overflow-htb-rtl-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html.ini
new file mode 100644
index 00000000000..9a3cd55ee2d
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html.ini
@@ -0,0 +1,36 @@
+[justify-self-default-overflow-vrl-ltr-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html.ini
new file mode 100644
index 00000000000..f628978e789
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html.ini
@@ -0,0 +1,36 @@
+[justify-self-default-overflow-vrl-ltr-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html.ini
new file mode 100644
index 00000000000..d86dbb9689b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html.ini
@@ -0,0 +1,42 @@
+[justify-self-default-overflow-vrl-rtl-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html.ini b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html.ini
new file mode 100644
index 00000000000..fc225bf963c
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html.ini
@@ -0,0 +1,42 @@
+[justify-self-default-overflow-vrl-rtl-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-animations/crashtests/replace-keyframes-animating-filter-001.html.ini b/tests/wpt/meta-legacy-layout/css/css-animations/crashtests/replace-keyframes-animating-filter-001.html.ini
new file mode 100644
index 00000000000..30016396ed4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-animations/crashtests/replace-keyframes-animating-filter-001.html.ini
@@ -0,0 +1,2 @@
+[replace-keyframes-animating-filter-001.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/css/css-cascade/at-scope-parsing.html.ini b/tests/wpt/meta-legacy-layout/css/css-cascade/at-scope-parsing.html.ini
index e43e2bf5971..b8920a1dc19 100644
--- a/tests/wpt/meta-legacy-layout/css/css-cascade/at-scope-parsing.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-cascade/at-scope-parsing.html.ini
@@ -127,3 +127,27 @@
 
   [@scope (.a) from (.c) is not valid]
     expected: FAIL
+
+  [@scope (.c <> .d) is not valid]
+    expected: FAIL
+
+  [@scope (.a, .c <> .d) is not valid]
+    expected: FAIL
+
+  [@scope (.a <> .b, .c) is not valid]
+    expected: FAIL
+
+  [@scope (div::before) is not valid]
+    expected: FAIL
+
+  [@scope (div::after) is not valid]
+    expected: FAIL
+
+  [@scope (slotted(div)) is not valid]
+    expected: FAIL
+
+  [@scope (.a) to (div::before) is not valid]
+    expected: FAIL
+
+  [@scope (> &) to (>>) is not valid]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-cascade/scope-nesting.html.ini b/tests/wpt/meta-legacy-layout/css/css-cascade/scope-nesting.html.ini
index 0d535cd082b..048c63106f0 100644
--- a/tests/wpt/meta-legacy-layout/css/css-cascade/scope-nesting.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-cascade/scope-nesting.html.ini
@@ -46,3 +46,6 @@
 
   [Scoped nested group rule]
     expected: FAIL
+
+  [Scoped nested within another scope]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-cascade/scope-shadow-sharing.html.ini b/tests/wpt/meta-legacy-layout/css/css-cascade/scope-shadow-sharing.html.ini
index ba5f030033e..7d09e3b651b 100644
--- a/tests/wpt/meta-legacy-layout/css/css-cascade/scope-shadow-sharing.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-cascade/scope-shadow-sharing.html.ini
@@ -1,2 +1,2 @@
 [scope-shadow-sharing.html]
-  expected: FAIL
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-computed-relative-color.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-computed-relative-color.html.ini
index 0b4190c2b1f..d4e0b6dccc5 100644
--- a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-computed-relative-color.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-computed-relative-color.html.ini
@@ -3688,3 +3688,12 @@
 
   [Property background-color value 'color(from currentColor xyz-d65 x y z)']
     expected: FAIL
+
+  [Property background-color value 'rgb(from color-mix(in srgb, currentColor, red) r g b / alpha)']
+    expected: FAIL
+
+  [Property background-color value 'rgb(from rgb(from currentColor r g b) r g b)']
+    expected: FAIL
+
+  [Property background-color value 'hsl(from currentColor calc((h / 360) * 360deg) s l)']
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-color-function.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-color-function.html.ini
index 4f9ec6e35b4..f15c16c1cd1 100644
--- a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-color-function.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-color-function.html.ini
@@ -214,3 +214,102 @@
 
   [e.style['color'\] = "color(xyz-d65 0.5 0 0 / calc(0.5 + (sign(1em - 10px) * 0.1)))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "color(srgb calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb-linear calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb-linear calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb-linear calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(a98-rgb calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(a98-rgb calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(a98-rgb calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(rec2020 calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(rec2020 calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(rec2020 calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(prophoto-rgb calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(prophoto-rgb calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(prophoto-rgb calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(display-p3 calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(display-p3 calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(display-p3 calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz calc(50% + (sign(1em - 10px) * 10%)) 0 0 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz 0.5 0 0 / calc(50% + (sign(1em - 10px) * 10%)))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 calc(50% + (sign(1em - 10px) * 10%)) 0 0 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 0.5 0 0 / calc(50% + (sign(1em - 10px) * 10%)))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 calc(50% + (sign(1em - 10px) * 10%)) 0 0 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 0.5 0 0 / calc(50% + (sign(1em - 10px) * 10%)))" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-hsl.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-hsl.html.ini
index cd0b66b6ed4..552ff706928 100644
--- a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-hsl.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-hsl.html.ini
@@ -46,3 +46,9 @@
 
   [e.style['color'\] = "hsla(0 0 0 / calc(0.75 + (sign(1em - 10px) * 0.1)))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "hsla(calc(50deg + (sign(1em - 10px) * 10deg)) -100 300 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "hsla(calc(50deg + (sign(1em - 10px) * 10deg)) -100% 300% / 0.5)" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-lab.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-lab.html.ini
index 04fe3118119..3ba45cad755 100644
--- a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-lab.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-lab.html.ini
@@ -106,3 +106,99 @@
 
   [e.style['color'\] = "oklch(0.6 0.3 50deg / calc(50% + (sign(1em - 10px) * 10%)))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "lab(calc(50 * 3) calc(0.5 - 1) calc(1.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(calc(-50 * 3) calc(0.5 + 1) calc(-1.5) / calc(-0.5 * 2))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(-200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(none 20 calc(0.5))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(calc(infinity) 0 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(calc(0.5 * 3) calc(0.5 - 1) calc(1.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(calc(-0.5 * 3) calc(0.5 + 1) calc(-1.5) / calc(-0.5 * 2))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(-200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(none 0.2 calc(0.5))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(calc(infinity) 0 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(50 * 3) calc(0.5 - 1) calc(20deg * 2) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(-50 * 3) calc(0.5 + 1) calc(-20deg * 2) / calc(-0.5 * 2))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(-200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(50%) -100 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(none 20 calc(0.5))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(infinity) 0 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(50 calc(-infinity) 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(0.5 * 3) calc(0.5 - 1) calc(20deg * 2) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(-0.5 * 3) calc(0.5 + 1) calc(-20deg * 2) / calc(-0.5 * 2))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(-200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(50%) -100 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(none 0.2 calc(0.5))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(infinity) 0 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(0.5 calc(-infinity) 0)" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-rgb.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-rgb.html.ini
index 02425c44e19..7ec2565223e 100644
--- a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-rgb.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-rgb.html.ini
@@ -52,3 +52,15 @@
 
   [e.style['color'\] = "rgba(0% 0 0% / calc(0.75 + (sign(1em - 10px) * 0.1)))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "rgba(calc(50 + (sign(1em - 10px) * 10)) 400 -400 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "rgba(calc(50% + (sign(1em - 10px) * 10%)) 400% -400% / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "rgba(calc(50 + (sign(1em - 10px) * 10)), 400, -400, 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "rgba(calc(50% + (sign(1em - 10px) * 10%)), 400%, -400%, 0.5)" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-snapped-parsing.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-snapped-parsing.html.ini
new file mode 100644
index 00000000000..6ad6378fe26
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-snapped-parsing.html.ini
@@ -0,0 +1,2 @@
+[at-container-snapped-parsing.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-snapped-serialization.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-snapped-serialization.html.ini
new file mode 100644
index 00000000000..35c90640507
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-snapped-serialization.html.ini
@@ -0,0 +1,2 @@
+[at-container-snapped-serialization.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-stuck-parsing.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-stuck-parsing.html.ini
new file mode 100644
index 00000000000..849d4af452a
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-stuck-parsing.html.ini
@@ -0,0 +1,2 @@
+[at-container-stuck-parsing.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-stuck-serialization.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-stuck-serialization.html.ini
new file mode 100644
index 00000000000..95ca2e600cb
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/at-container-stuck-serialization.html.ini
@@ -0,0 +1,2 @@
+[at-container-stuck-serialization.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-computed.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-computed.html.ini
new file mode 100644
index 00000000000..bf71bdf192b
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-computed.html.ini
@@ -0,0 +1,2 @@
+[container-type-scroll-state-computed.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-containment.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-containment.html.ini
new file mode 100644
index 00000000000..6816d82fe23
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-containment.html.ini
@@ -0,0 +1,3 @@
+[container-type-scroll-state-containment.html]
+  [container-type:scroll-state does not apply size containment]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-parsing.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-parsing.html.ini
new file mode 100644
index 00000000000..77be49bdc31
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/container-type-scroll-state-parsing.html.ini
@@ -0,0 +1,2 @@
+[container-type-scroll-state-parsing.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-initially-snapped.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-initially-snapped.html.ini
new file mode 100644
index 00000000000..0b354083d7a
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-initially-snapped.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-initially-snapped.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-initially-stuck.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-initially-stuck.html.ini
new file mode 100644
index 00000000000..7260020fd97
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-initially-stuck.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-initially-stuck.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-change.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-change.html.ini
new file mode 100644
index 00000000000..346d353eab5
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-change.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-snapped-change.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html.ini
new file mode 100644
index 00000000000..a1cd47a47cc
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-snapped-container-type-change.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-wm.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-wm.html.ini
new file mode 100644
index 00000000000..a91d853ebd3
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/scroll-state-snapped-wm.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-snapped-wm.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/style-query-document-element.html.ini b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/style-query-document-element.html.ini
new file mode 100644
index 00000000000..d59e1b1536d
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-conditional/container-queries/style-query-document-element.html.ini
@@ -0,0 +1,2 @@
+[style-query-document-element.html]
+  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/css/css-flexbox/animation/flex-basis-content-crash.html.ini b/tests/wpt/meta-legacy-layout/css/css-flexbox/animation/flex-basis-content-crash.html.ini
new file mode 100644
index 00000000000..b2b381987db
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-flexbox/animation/flex-basis-content-crash.html.ini
@@ -0,0 +1,2 @@
+[flex-basis-content-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/css/css-flexbox/aspect-ratio-intrinsic-size-008.html.ini b/tests/wpt/meta-legacy-layout/css/css-flexbox/aspect-ratio-intrinsic-size-008.html.ini
new file mode 100644
index 00000000000..9c975ff2eb9
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-flexbox/aspect-ratio-intrinsic-size-008.html.ini
@@ -0,0 +1,2 @@
+[aspect-ratio-intrinsic-size-008.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-flexbox/aspect-ratio-intrinsic-size-009.html.ini b/tests/wpt/meta-legacy-layout/css/css-flexbox/aspect-ratio-intrinsic-size-009.html.ini
new file mode 100644
index 00000000000..77402806536
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-flexbox/aspect-ratio-intrinsic-size-009.html.ini
@@ -0,0 +1,2 @@
+[aspect-ratio-intrinsic-size-009.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html.ini b/tests/wpt/meta-legacy-layout/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html.ini
index f5a2dba893d..104c28c850f 100644
--- a/tests/wpt/meta-legacy-layout/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html.ini
@@ -31,3 +31,6 @@
 
   [.flexbox 18]
     expected: FAIL
+
+  [.flexbox 9]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-flexbox/justify-content-sideways-001.html.ini b/tests/wpt/meta-legacy-layout/css/css-flexbox/justify-content-sideways-001.html.ini
new file mode 100644
index 00000000000..d23df3395f6
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-flexbox/justify-content-sideways-001.html.ini
@@ -0,0 +1,2 @@
+[justify-content-sideways-001.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-fonts/font-style-sign-function.html.ini b/tests/wpt/meta-legacy-layout/css/css-fonts/font-style-sign-function.html.ini
new file mode 100644
index 00000000000..62e27398853
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-fonts/font-style-sign-function.html.ini
@@ -0,0 +1,3 @@
+[font-style-sign-function.html]
+  [Property font-style value 'oblique calc(sign(1rem - 1px) * 10deg)']
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-fonts/generic-family-keywords-001.html.ini b/tests/wpt/meta-legacy-layout/css/css-fonts/generic-family-keywords-001.html.ini
index 48f790e2026..c3d30125e3b 100644
--- a/tests/wpt/meta-legacy-layout/css/css-fonts/generic-family-keywords-001.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-fonts/generic-family-keywords-001.html.ini
@@ -17,8 +17,8 @@
   [@font-face matching for quoted and unquoted ui-sans-serif]
     expected: FAIL
 
-  [@font-face matching for quoted and unquoted ui-serif]
-    expected: FAIL
-
   [@font-face matching for quoted and unquoted ui-monospace]
     expected: FAIL
+
+  [@font-face matching for quoted and unquoted cursive]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-masonry/tentative/parsing/masonry-slack-computed.html.ini b/tests/wpt/meta-legacy-layout/css/css-masonry/tentative/parsing/masonry-slack-computed.html.ini
new file mode 100644
index 00000000000..5bfdcbd90f4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-masonry/tentative/parsing/masonry-slack-computed.html.ini
@@ -0,0 +1,18 @@
+[masonry-slack-computed.html]
+  [Property masonry-slack value 'normal']
+    expected: FAIL
+
+  [Property masonry-slack value '10px']
+    expected: FAIL
+
+  [Property masonry-slack value '20%']
+    expected: FAIL
+
+  [Property masonry-slack value 'calc(20% + 10px)']
+    expected: FAIL
+
+  [Property masonry-slack value 'calc(-0.5em + 10px)']
+    expected: FAIL
+
+  [Property masonry-slack value 'calc(0.5em + 10px)']
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-masonry/tentative/parsing/masonry-slack-valid.html.ini b/tests/wpt/meta-legacy-layout/css/css-masonry/tentative/parsing/masonry-slack-valid.html.ini
new file mode 100644
index 00000000000..8401d20fa57
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-masonry/tentative/parsing/masonry-slack-valid.html.ini
@@ -0,0 +1,18 @@
+[masonry-slack-valid.html]
+  [e.style['masonry-slack'\] = "normal" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "0" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "1px" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "calc(2em + 3ex)" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "4%" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "5vmin" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp/webkit-line-clamp-049.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp/webkit-line-clamp-049.html.ini
new file mode 100644
index 00000000000..eadc206ac02
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/line-clamp/webkit-line-clamp-049.html.ini
@@ -0,0 +1,2 @@
+[webkit-line-clamp-049.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-overflow/scrollbar-gutter-scroll-into-view.html.ini b/tests/wpt/meta-legacy-layout/css/css-overflow/scrollbar-gutter-scroll-into-view.html.ini
new file mode 100644
index 00000000000..69d00bd9309
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-overflow/scrollbar-gutter-scroll-into-view.html.ini
@@ -0,0 +1,2 @@
+[scrollbar-gutter-scroll-into-view.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html.ini b/tests/wpt/meta-legacy-layout/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html.ini
new file mode 100644
index 00000000000..0e491ff7f09
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html.ini
@@ -0,0 +1,3 @@
+[sign-function-aspect-ratio.html]
+  [Property aspect-ratio value 'sign(1rem - 1px) / sign(1rem - 1px)']
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-sizing/dynamic-available-size-iframe.html.ini b/tests/wpt/meta-legacy-layout/css/css-sizing/dynamic-available-size-iframe.html.ini
deleted file mode 100644
index 35256741d38..00000000000
--- a/tests/wpt/meta-legacy-layout/css/css-sizing/dynamic-available-size-iframe.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[dynamic-available-size-iframe.html]
-  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-syntax/urange-parsing.html.ini b/tests/wpt/meta-legacy-layout/css/css-syntax/urange-parsing.html.ini
index d8fbbaa6d79..1eb48379d95 100644
--- a/tests/wpt/meta-legacy-layout/css/css-syntax/urange-parsing.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-syntax/urange-parsing.html.ini
@@ -277,3 +277,6 @@
 
   ["u+??????" is invalid]
     expected: FAIL
+
+  ["()U+123" is invalid]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-001.html.ini b/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-001.html.ini
new file mode 100644
index 00000000000..f5f684b66b4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-001.html.ini
@@ -0,0 +1,2 @@
+[table-as-item-cell-percentage-001.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-003.html.ini b/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-003.html.ini
new file mode 100644
index 00000000000..c327c2be7f4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-003.html.ini
@@ -0,0 +1,2 @@
+[table-as-item-cell-percentage-003.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-004.html.ini b/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-004.html.ini
new file mode 100644
index 00000000000..9da8655f138
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-tables/table-as-item-cell-percentage-004.html.ini
@@ -0,0 +1,2 @@
+[table-as-item-cell-percentage-004.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-tables/tentative/colgroup-col.html.ini b/tests/wpt/meta-legacy-layout/css/css-tables/tentative/colgroup-col.html.ini
index 5f81cb67a16..54122c07acd 100644
--- a/tests/wpt/meta-legacy-layout/css/css-tables/tentative/colgroup-col.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-tables/tentative/colgroup-col.html.ini
@@ -1,10 +1,4 @@
 [colgroup-col.html]
-  [table 1]
-    expected: FAIL
-
-  [table 2]
-    expected: FAIL
-
   [table 3]
     expected: FAIL
 
diff --git a/tests/wpt/meta-legacy-layout/css/css-tables/th-text-align.html.ini b/tests/wpt/meta-legacy-layout/css/css-tables/th-text-align.html.ini
deleted file mode 100644
index 01a4b1f4e58..00000000000
--- a/tests/wpt/meta-legacy-layout/css/css-tables/th-text-align.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[th-text-align.html]
-  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-text/white-space/white-space-intrinsic-size-021.html.ini b/tests/wpt/meta-legacy-layout/css/css-text/white-space/white-space-intrinsic-size-021.html.ini
new file mode 100644
index 00000000000..0cd8fc91e6d
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-text/white-space/white-space-intrinsic-size-021.html.ini
@@ -0,0 +1,102 @@
+[white-space-intrinsic-size-021.html]
+  [.container > div 11]
+    expected: FAIL
+
+  [.container > div 15]
+    expected: FAIL
+
+  [.container > div 16]
+    expected: FAIL
+
+  [.container > div 19]
+    expected: FAIL
+
+  [.container > div 23]
+    expected: FAIL
+
+  [.container > div 24]
+    expected: FAIL
+
+  [.container > div 39]
+    expected: FAIL
+
+  [.container > div 40]
+    expected: FAIL
+
+  [.container > div 43]
+    expected: FAIL
+
+  [.container > div 47]
+    expected: FAIL
+
+  [.container > div 48]
+    expected: FAIL
+
+  [.container > div 55]
+    expected: FAIL
+
+  [.container > div 56]
+    expected: FAIL
+
+  [.container > div 59]
+    expected: FAIL
+
+  [.container > div 63]
+    expected: FAIL
+
+  [.container > div 64]
+    expected: FAIL
+
+  [.container > div 65]
+    expected: FAIL
+
+  [.container > div 67]
+    expected: FAIL
+
+  [.container > div 69]
+    expected: FAIL
+
+  [.container > div 73]
+    expected: FAIL
+
+  [.container > div 75]
+    expected: FAIL
+
+  [.container > div 77]
+    expected: FAIL
+
+  [.container > div 95]
+    expected: FAIL
+
+  [.container > div 96]
+    expected: FAIL
+
+  [.container > div 103]
+    expected: FAIL
+
+  [.container > div 104]
+    expected: FAIL
+
+  [.container > div 119]
+    expected: FAIL
+
+  [.container > div 120]
+    expected: FAIL
+
+  [.container > div 127]
+    expected: FAIL
+
+  [.container > div 128]
+    expected: FAIL
+
+  [.container > div 135]
+    expected: FAIL
+
+  [.container > div 136]
+    expected: FAIL
+
+  [.container > div 143]
+    expected: FAIL
+
+  [.container > div 144]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html.ini b/tests/wpt/meta-legacy-layout/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html.ini
index c037e96b141..29e03d34b67 100644
--- a/tests/wpt/meta-legacy-layout/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html.ini
@@ -14,3 +14,5 @@
   [KeyframeEffect.getKeyframes() returns expected frames for a transition after resetting the effect target]
     expected: FAIL
 
+  [KeyframeEffect.getKeyframes() returns expected frames for a custom property transition]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-transitions/custom-property-and-allow-discrete.html.ini b/tests/wpt/meta-legacy-layout/css/css-transitions/custom-property-and-allow-discrete.html.ini
new file mode 100644
index 00000000000..4f2a2d66b33
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-transitions/custom-property-and-allow-discrete.html.ini
@@ -0,0 +1,6 @@
+[custom-property-and-allow-discrete.html]
+  [It is possible to transition an unregistered custom property using "transition-behavior: allows-discrete"]
+    expected: FAIL
+
+  [It is possible to transition an unregistered custom property using "transition-behavior: allows-discrete" when setting "transition-property" in the style change that yields the transition]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-ui/text-overflow-021.html.ini b/tests/wpt/meta-legacy-layout/css/css-ui/text-overflow-021.html.ini
new file mode 100644
index 00000000000..bc6acd4a26f
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-ui/text-overflow-021.html.ini
@@ -0,0 +1,2 @@
+[text-overflow-021.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/attr-all-types.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/attr-all-types.html.ini
index 7b12c5359c8..78c214e0e29 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/attr-all-types.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/attr-all-types.html.ini
@@ -47,21 +47,9 @@
   [CSS Values and Units Test: attr 21]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 28]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 29]
-    expected: FAIL
-
   [CSS Values and Units Test: attr 33]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 34]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 35]
-    expected: FAIL
-
   [CSS Values and Units Test: attr 36]
     expected: FAIL
 
@@ -131,12 +119,6 @@
   [CSS Values and Units Test: attr 17]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 22]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 23]
-    expected: FAIL
-
   [CSS Values and Units Test: attr 24]
     expected: FAIL
 
@@ -155,20 +137,47 @@
   [CSS Values and Units Test: attr 60]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 69]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 70]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 71]
-    expected: FAIL
-
   [CSS Values and Units Test: attr 72]
     expected: FAIL
 
   [CSS Values and Units Test: attr 15]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 30]
+  [CSS Values and Units Test: attr 19]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 20]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 25]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 26]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 27]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 31]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 32]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 61]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 62]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 63]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 73]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 74]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 75]
     expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/attr-security.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/attr-security.html.ini
new file mode 100644
index 00000000000..7d110205177
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-values/attr-security.html.ini
@@ -0,0 +1,36 @@
+[attr-security.html]
+  [CSS Values and Units Test: attr() security limitations]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 3]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 5]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 6]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 8]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 9]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 11]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 12]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 14]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 15]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 17]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 19]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/calc-infinity-nan-computed.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/calc-infinity-nan-computed.html.ini
index 5191974d8e9..93ba67d2517 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/calc-infinity-nan-computed.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/calc-infinity-nan-computed.html.ini
@@ -1,7 +1,4 @@
 [calc-infinity-nan-computed.html]
-  [Property width value 'calc(min(NaN * 1px, infinity * 1px) + max(infinity * 1px, -infinity * 1px))']
-    expected: FAIL
-
   [Property rotate(calc(infinity * 1deg)) value expected same with rotate(0deg) in +/-0.0001]
     expected: FAIL
 
@@ -38,12 +35,6 @@
   [Property rotate(calc(NaN * 1grad)) value expected same with rotate(0grad) in +/-0.0001]
     expected: FAIL
 
-  [Property width value 'max(15px, NaN * 1px)']
-    expected: FAIL
-
-  [Property width value 'max(NaN * 1px, 15px)']
-    expected: FAIL
-
   [Property rotate(calc(infinity * 1turn)) value expected same with rotate(0deg) in +/-0.0001]
     expected: FAIL
 
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/calc-infinity-nan-serialize-length.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/calc-infinity-nan-serialize-length.html.ini
deleted file mode 100644
index 25c7df750c4..00000000000
--- a/tests/wpt/meta-legacy-layout/css/css-values/calc-infinity-nan-serialize-length.html.ini
+++ /dev/null
@@ -1,15 +0,0 @@
-[calc-infinity-nan-serialize-length.html]
-  ['calc(1 * max(nAn*2px, 0px))' as a specified value should serialize as 'calc(NaN * 1px)'.]
-    expected: FAIL
-
-  ['calc(1 * min(nan*3px, 0px))' as a specified value should serialize as 'calc(NaN * 1px)'.]
-    expected: FAIL
-
-  ['calc(1 * min(NaN * 1pt, NaN * 1cm))' as a specified value should serialize as 'calc(NaN * 1px)'.]
-    expected: FAIL
-
-  ['calc(1 * max(NaN * 1cm, NaN * 2Q))' as a specified value should serialize as 'calc(NaN * 1px)'.]
-    expected: FAIL
-
-  ['calc(1 * min(NaN * 2px, NaN * 4em))' as a specified value should serialize as 'calc(NaN * 1px)'.]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/cssom-view/overflow-hidden-smooth-scroll-crash.html.ini b/tests/wpt/meta-legacy-layout/css/cssom-view/overflow-hidden-smooth-scroll-crash.html.ini
new file mode 100644
index 00000000000..51b27342321
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/cssom-view/overflow-hidden-smooth-scroll-crash.html.ini
@@ -0,0 +1,2 @@
+[overflow-hidden-smooth-scroll-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/css/cssom-view/smooth-scroll-nonstop.html.ini b/tests/wpt/meta-legacy-layout/css/cssom-view/smooth-scroll-nonstop.html.ini
index fb43d2b8fa1..82dd7574d17 100644
--- a/tests/wpt/meta-legacy-layout/css/cssom-view/smooth-scroll-nonstop.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/cssom-view/smooth-scroll-nonstop.html.ini
@@ -1,4 +1,6 @@
 [smooth-scroll-nonstop.html]
-  expected: TIMEOUT
   [noop scrollIntoView doesn't interrupt ongoing smooth scroll.]
-    expected: TIMEOUT
+    expected: FAIL
+
+  [noop scrollTo doesn't interrupt ongoing smooth scroll.]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/filter-effects/feimage-circular-reference-foreign-object-crash.html.ini b/tests/wpt/meta-legacy-layout/css/filter-effects/feimage-circular-reference-foreign-object-crash.html.ini
new file mode 100644
index 00000000000..723a730e73c
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/filter-effects/feimage-circular-reference-foreign-object-crash.html.ini
@@ -0,0 +1,2 @@
+[feimage-circular-reference-foreign-object-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/css/filter-effects/feimage-reference-foreign-object-crash.html.ini b/tests/wpt/meta-legacy-layout/css/filter-effects/feimage-reference-foreign-object-crash.html.ini
new file mode 100644
index 00000000000..a0a890d2766
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/filter-effects/feimage-reference-foreign-object-crash.html.ini
@@ -0,0 +1,2 @@
+[feimage-reference-foreign-object-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/dom/abort/abort-signal-any-crash.html.ini b/tests/wpt/meta-legacy-layout/dom/abort/abort-signal-any-crash.html.ini
new file mode 100644
index 00000000000..e9f74b13aae
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/dom/abort/abort-signal-any-crash.html.ini
@@ -0,0 +1,2 @@
+[abort-signal-any-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/encoding/encodeInto.any.js.ini b/tests/wpt/meta-legacy-layout/encoding/encodeInto.any.js.ini
index f372f189f78..cdea77c62ed 100644
--- a/tests/wpt/meta-legacy-layout/encoding/encodeInto.any.js.ini
+++ b/tests/wpt/meta-legacy-layout/encoding/encodeInto.any.js.ini
@@ -140,9 +140,6 @@
   [encodeInto() with 𝌆A and destination length 3, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() and a detached output buffer]
-    expected: FAIL
-
   [encodeInto() with ¥¥ and destination length 4, offset 4, filler random]
     expected: FAIL
 
@@ -311,78 +308,27 @@
   [encodeInto() with 𝌆 and destination length 4, offset 4, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 0, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 0, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 4, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 0, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 4, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 0, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 0, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 4, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 0, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with ¥¥ and destination length 4, offset 4, filler 0]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler random]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 0, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 4, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 4, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler 128]
     expected: FAIL
 
@@ -395,15 +341,6 @@
   [encodeInto() into SharedArrayBuffer with AU+df06 and destination length 4, offset 4, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 0, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 4, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 0, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler random]
     expected: FAIL
 
@@ -419,12 +356,6 @@
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 4, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with AU+df06 and destination length 4, offset 4, filler 0]
     expected: FAIL
 
@@ -437,12 +368,6 @@
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 4, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler random]
     expected: FAIL
 
@@ -452,54 +377,21 @@
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 4, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 0, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 0, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 0, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with ¥¥ and destination length 4, offset 0, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 4, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 4, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler random]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 0, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 4, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 0, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 4, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 0, filler random]
     expected: FAIL
 
@@ -509,9 +401,6 @@
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 0, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler 0]
     expected: FAIL
 
@@ -530,36 +419,18 @@
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with AU+df06 and destination length 4, offset 0, filler 128]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 4, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 4, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 0, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 0, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler 128]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 0, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 4, filler 128]
     expected: FAIL
 
@@ -745,9 +616,6 @@
   [encodeInto() with 𝌆A and destination length 3, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() and a detached output buffer]
-    expected: FAIL
-
   [encodeInto() with ¥¥ and destination length 4, offset 4, filler random]
     expected: FAIL
 
@@ -916,78 +784,27 @@
   [encodeInto() with 𝌆 and destination length 4, offset 4, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 0, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 0, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 4, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 0, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 4, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 0, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 0, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 4, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 0, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with ¥¥ and destination length 4, offset 4, filler 0]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler random]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 0, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 4, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 4, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler 128]
     expected: FAIL
 
@@ -1000,15 +817,6 @@
   [encodeInto() into SharedArrayBuffer with AU+df06 and destination length 4, offset 4, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 0, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 4, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 0, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler random]
     expected: FAIL
 
@@ -1024,12 +832,6 @@
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 4, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with AU+df06 and destination length 4, offset 4, filler 0]
     expected: FAIL
 
@@ -1042,12 +844,6 @@
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 4, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 0, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler random]
     expected: FAIL
 
@@ -1057,54 +853,21 @@
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 4, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 0, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 0, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 4, filler 0]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 0, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with ¥¥ and destination length 4, offset 0, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 4, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 4, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler random]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 0, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with ¥¥ and destination length 4, offset 4, filler 128]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆A and destination length 3, offset 0, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler 128]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 4, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 0, filler random]
     expected: FAIL
 
@@ -1114,9 +877,6 @@
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 0, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler 0]
     expected: FAIL
 
@@ -1135,36 +895,18 @@
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with AU+df06 and destination length 4, offset 0, filler 128]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 4, filler random]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with Hi and destination length 0, offset 4, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with AU+df06 and destination length 4, offset 0, filler 128]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with A and destination length 10, offset 0, filler random]
-    expected: FAIL
-
-  [encodeInto() into ArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 0]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler 128]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 0]
     expected: FAIL
 
-  [encodeInto() into ArrayBuffer with 𝌆 and destination length 4, offset 0, filler random]
-    expected: FAIL
-
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 4, filler 128]
     expected: FAIL
 
diff --git a/tests/wpt/meta-legacy-layout/encoding/idlharness.any.js.ini b/tests/wpt/meta-legacy-layout/encoding/idlharness.any.js.ini
index 7675a1f79f0..9af79da8fb9 100644
--- a/tests/wpt/meta-legacy-layout/encoding/idlharness.any.js.ini
+++ b/tests/wpt/meta-legacy-layout/encoding/idlharness.any.js.ini
@@ -74,15 +74,6 @@
   [TextDecoderStream interface: attribute writable]
     expected: FAIL
 
-  [TextEncoder interface: calling encodeInto(USVString, Uint8Array) on new TextEncoder() with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [TextEncoder interface: new TextEncoder() must inherit property "encodeInto(USVString, Uint8Array)" with the proper type]
-    expected: FAIL
-
-  [TextEncoder interface: operation encodeInto(USVString, Uint8Array)]
-    expected: FAIL
-
 
 [idlharness.any.worker.html]
   [Untitled]
@@ -151,18 +142,8 @@
   [TextDecoderStream interface: attribute writable]
     expected: FAIL
 
-  [TextEncoder interface: calling encodeInto(USVString, Uint8Array) on new TextEncoder() with too few arguments must throw TypeError]
-    expected: FAIL
-
-  [TextEncoder interface: new TextEncoder() must inherit property "encodeInto(USVString, Uint8Array)" with the proper type]
-    expected: FAIL
-
-  [TextEncoder interface: operation encodeInto(USVString, Uint8Array)]
-    expected: FAIL
-
 
 [idlharness.any.serviceworker.html]
   expected: ERROR
   [idlharness]
     expected: FAIL
-
diff --git a/tests/wpt/meta-legacy-layout/encoding/streams/stringification-crash.html.ini b/tests/wpt/meta-legacy-layout/encoding/streams/stringification-crash.html.ini
new file mode 100644
index 00000000000..56b6cfa0802
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/encoding/streams/stringification-crash.html.ini
@@ -0,0 +1,2 @@
+[stringification-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/fetch/api/basic/request-forbidden-headers.any.js.ini b/tests/wpt/meta-legacy-layout/fetch/api/basic/request-forbidden-headers.any.js.ini
index 88c14114e79..ce9c0aebb04 100644
--- a/tests/wpt/meta-legacy-layout/fetch/api/basic/request-forbidden-headers.any.js.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/api/basic/request-forbidden-headers.any.js.ini
@@ -1,130 +1,4 @@
 [request-forbidden-headers.any.worker.html]
-  [header x-http-method-override is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value trace]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value trace]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value trace]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value trace]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value trace]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value trace]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value track]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value track]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value track]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value track]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value track]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value track]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value connect]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value connect]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value connect]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value connect]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value connect]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value connect]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value trace,]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value trace,]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value trace,]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value trace,]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value trace,]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value trace,]
-    expected: FAIL
-
   [Access-Control-Request-Private-Network is a forbidden request header]
     expected: FAIL
 
@@ -133,132 +7,6 @@
   expected: ERROR
 
 [request-forbidden-headers.any.html]
-  [header x-http-method-override is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value TRACE]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value TRACK]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value CONNECT]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value trace]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value trace]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value trace]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value trace]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value trace]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value trace]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value track]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value track]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value track]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value track]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value track]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value track]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value connect]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value connect]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value connect]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value connect]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value connect]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value connect]
-    expected: FAIL
-
-  [header x-http-method-override is forbidden to use value trace,]
-    expected: FAIL
-
-  [header x-http-method is forbidden to use value trace,]
-    expected: FAIL
-
-  [header x-method-override is forbidden to use value trace,]
-    expected: FAIL
-
-  [header X-HTTP-METHOD-OVERRIDE is forbidden to use value trace,]
-    expected: FAIL
-
-  [header X-HTTP-METHOD is forbidden to use value trace,]
-    expected: FAIL
-
-  [header X-METHOD-OVERRIDE is forbidden to use value trace,]
-    expected: FAIL
-
   [Access-Control-Request-Private-Network is a forbidden request header]
     expected: FAIL
 
diff --git a/tests/wpt/meta-legacy-layout/fetch/api/request/destination/fetch-destination-no-load-event.https.html.ini b/tests/wpt/meta-legacy-layout/fetch/api/request/destination/fetch-destination-no-load-event.https.html.ini
index 4848e833563..17e735922c9 100644
--- a/tests/wpt/meta-legacy-layout/fetch/api/request/destination/fetch-destination-no-load-event.https.html.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/api/request/destination/fetch-destination-no-load-event.https.html.ini
@@ -1,19 +1,30 @@
 [fetch-destination-no-load-event.https.html]
   [Fetch destination tests for resources with no load event]
     expected: FAIL
+
   [Initialize global state]
     expected: FAIL
+
   [Background image fetches with an "image" Request.destination]
     expected: FAIL
+
   [Font loading API fetches with an "font" Request.destination]
     expected: FAIL
+
   [CSS font fetches with an "font" Request.destination]
     expected: FAIL
+
   [sendBeacon() fetches with an empty string Request.destination]
     expected: FAIL
+
   [Cache.add() fetches with an empty string Request.destination]
     expected: FAIL
+
   [importScripts() fetches with a "script" Request.destination]
     expected: FAIL
+
   [@import fetches with a "style" Request.destination]
     expected: FAIL
+
+  [SVG use element fetches with an "image" Request.destination]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-font-face.sub.tentative.html.ini b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-font-face.sub.tentative.html.ini
index cc38fcf70b2..e9e12e8cac4 100644
--- a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-font-face.sub.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-font-face.sub.tentative.html.ini
@@ -5,9 +5,6 @@
   [sec-fetch-site - Not sent to non-trustworthy cross-site destination]
     expected: FAIL
 
-  [sec-fetch-mode - Not sent to non-trustworthy cross-site destination]
-    expected: FAIL
-
   [sec-fetch-dest - Not sent to non-trustworthy cross-site destination]
     expected: FAIL
 
@@ -28,6 +25,3 @@
 
   [sec-fetch-user - Not sent to non-trustworthy cross-site destination]
     expected: FAIL
-
-  [sec-fetch-mode - Not sent to non-trustworthy same-site destination]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/element-link-prefetch.https.optional.sub.html.ini b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/element-link-prefetch.https.optional.sub.html.ini
index 3bcfbe3081b..f083672c134 100644
--- a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/element-link-prefetch.https.optional.sub.html.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/element-link-prefetch.https.optional.sub.html.ini
@@ -1,97 +1,93 @@
 [element-link-prefetch.https.optional.sub.html]
-  expected: TIMEOUT
   [sec-fetch-site - Same origin no attributes]
-    expected: TIMEOUT
+    expected: FAIL
 
   [sec-fetch-site - Cross-site no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same site no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same-Origin -> Cross-Site -> Same-Origin redirect no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same-Origin -> Same-Site -> Same-Origin redirect no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Cross-Site -> Same Origin no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Cross-Site -> Same-Site no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Cross-Site -> Cross-Site no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same-Origin -> Same Origin no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same-Origin -> Same-Site no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same-Origin -> Cross-Site no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same-Site -> Same Origin no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same-Site -> Same-Site no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - Same-Site -> Cross-Site no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-mode no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-mode attributes: crossorigin]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-mode attributes: crossorigin=anonymous]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-mode attributes: crossorigin=use-credentials]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=audio]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=document]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=embed]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=fetch]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=font]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=image]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=object]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=script]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=style]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=track]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=video]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-dest attributes: as=worker]
-    expected: NOTRUN
-
-  [sec-fetch-user no attributes]
-    expected: NOTRUN
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/element-link-prefetch.optional.sub.html.ini b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/element-link-prefetch.optional.sub.html.ini
index dbde77c8aa8..c91344a198e 100644
--- a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/element-link-prefetch.optional.sub.html.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/element-link-prefetch.optional.sub.html.ini
@@ -1,46 +1,6 @@
 [element-link-prefetch.optional.sub.html]
-  expected: TIMEOUT
-  [sec-fetch-site - Not sent to non-trustworthy same-origin destination no attributes]
-    expected: TIMEOUT
-
-  [sec-fetch-site - Not sent to non-trustworthy same-site destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-site - Not sent to non-trustworthy cross-site destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-mode - Not sent to non-trustworthy same-origin destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-mode - Not sent to non-trustworthy same-site destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-mode - Not sent to non-trustworthy cross-site destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-dest - Not sent to non-trustworthy same-origin destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-dest - Not sent to non-trustworthy same-site destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-dest - Not sent to non-trustworthy cross-site destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-user - Not sent to non-trustworthy same-origin destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-user - Not sent to non-trustworthy same-site destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-user - Not sent to non-trustworthy cross-site destination no attributes]
-    expected: NOTRUN
-
-  [sec-fetch-site - HTTPS downgrade (header not sent) no attributes]
-    expected: NOTRUN
-
   [sec-fetch-site - HTTPS upgrade no attributes]
-    expected: NOTRUN
+    expected: FAIL
 
   [sec-fetch-site - HTTPS downgrade-upgrade no attributes]
-    expected: NOTRUN
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/fullscreen/crashtests/content-visibility-crash.html.ini b/tests/wpt/meta-legacy-layout/fullscreen/crashtests/content-visibility-crash.html.ini
new file mode 100644
index 00000000000..03718ff93c2
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/fullscreen/crashtests/content-visibility-crash.html.ini
@@ -0,0 +1,2 @@
+[content-visibility-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini
deleted file mode 100644
index 7dc346632a4..00000000000
--- a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin.window.js.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[navigation-unload-same-origin.window.html]
-  [Same-origin navigation started from unload handler must be ignored]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
deleted file mode 100644
index 7a5fcb79165..00000000000
--- a/tests/wpt/meta-legacy-layout/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[traverse_the_history_5.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/element/manual/filters/svg-filter-lh-rlh.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/element/manual/filters/svg-filter-lh-rlh.html.ini
index 3e854890a7f..58cd6e2307d 100644
--- a/tests/wpt/meta-legacy-layout/html/canvas/element/manual/filters/svg-filter-lh-rlh.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/canvas/element/manual/filters/svg-filter-lh-rlh.html.ini
@@ -1,2 +1,2 @@
 [svg-filter-lh-rlh.html]
-  expected: FAIL
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/offscreen/canvas-host/2d.canvas.host.size.attributes.parse.minus.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/canvas-host/2d.canvas.host.size.attributes.parse.minus.html.ini
index a1700667887..abcdc2821c8 100644
--- a/tests/wpt/meta-legacy-layout/html/canvas/offscreen/canvas-host/2d.canvas.host.size.attributes.parse.minus.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/canvas-host/2d.canvas.host.size.attributes.parse.minus.html.ini
@@ -1,3 +1,4 @@
 [2d.canvas.host.size.attributes.parse.minus.html]
+  expected: CRASH
   [Parsing of non-negative integers]
     expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/dom/elements/the-innertext-and-outertext-properties/getter.html.ini b/tests/wpt/meta-legacy-layout/html/dom/elements/the-innertext-and-outertext-properties/getter.html.ini
index dad00323482..e73fa2e7229 100644
--- a/tests/wpt/meta-legacy-layout/html/dom/elements/the-innertext-and-outertext-properties/getter.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/dom/elements/the-innertext-and-outertext-properties/getter.html.ini
@@ -775,3 +775,27 @@
 
   [opened <details> content shown ("<div><details open><summary>abc</summary>123")]
     expected: FAIL
+
+  [Whitespace around inline-flex should not be collapsed ("<div>abc <span style='display:inline-flex'></span> def")]
+    expected: FAIL
+
+  [Trailing space at end of inline-flex should be collapsed ("<div>abc <span style='display:inline-flex'> def </span> ghi")]
+    expected: FAIL
+
+  [Whitespace around inline-grid should not be collapsed ("<div>abc <span style='display:inline-grid'></span> def")]
+    expected: FAIL
+
+  [Trailing space at end of grid-flex should be collapsed ("<div>abc <span style='display:inline-grid'> def </span> ghi")]
+    expected: FAIL
+
+  [Whitespace between inline-flex and block should be collapsed ("<div><span style='inline-flex'></span> <div>abc</div>")]
+    expected: FAIL
+
+  [Whitespace between inline-grid and block should be collapsed ("<div><span style='inline-grid'></span> <div>abc</div>")]
+    expected: FAIL
+
+  [Leading/trailing space removal at display:inline-flex boundary ("<div>123<span style='display:inline-flex'> abc </span>def")]
+    expected: FAIL
+
+  [Leading/trailing space removal at display:inline-grid boundary ("<div>123<span style='display:inline-grid'> abc </span>def")]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini b/tests/wpt/meta-legacy-layout/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
index 8b8af2b9c2e..2ef0896e3b3 100644
--- a/tests/wpt/meta-legacy-layout/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
+++ b/tests/wpt/meta-legacy-layout/html/infrastructure/urls/base-url/document-base-url-window-initiator-is-not-opener.https.window.js.ini
@@ -1,3 +1,4 @@
 [document-base-url-window-initiator-is-not-opener.https.window.html]
+  expected: TIMEOUT
   [window.open() gets base url from initiator not opener.]
     expected: [FAIL, PASS, TIMEOUT]
diff --git a/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/document-with-fragment-nonexistent.html.ini b/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/document-with-fragment-nonexistent.html.ini
index 59e7bc11784..114d6424efc 100644
--- a/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/document-with-fragment-nonexistent.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/interaction/focus/the-autofocus-attribute/document-with-fragment-nonexistent.html.ini
@@ -4,4 +4,3 @@
 
   [Autofocus elements in top-level browsing context's documents with non-existent fragments should work.]
     expected: FAIL
-
diff --git a/tests/wpt/meta-legacy-layout/html/rendering/dimension-attributes.html.ini b/tests/wpt/meta-legacy-layout/html/rendering/dimension-attributes.html.ini
index 99de0628c87..37a4151ecbd 100644
--- a/tests/wpt/meta-legacy-layout/html/rendering/dimension-attributes.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/rendering/dimension-attributes.html.ini
@@ -3320,198 +3320,6 @@
   [<embed height="0px"> mapping to <embed> height property]
     expected: FAIL
 
-  [<td height="200"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="1007"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="   00523   "> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200.25"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200.7"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200."> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200in"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200.25in"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200 %"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200 abc"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200%"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200%abc"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200.25%"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="200.%"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="20.25e2"> mapping to <td> height property]
-    expected: FAIL
-
-  [<td height="20.25E2"> mapping to <td> height property]
-    expected: FAIL
-
-  [<table height="200"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="1007"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="   00523   "> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200.25"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200.7"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200."> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200in"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200.25in"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200 %"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200 abc"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200%"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200%abc"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200.25%"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="200.%"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="20.25e2"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="20.25E2"> mapping to <table> height property]
-    expected: FAIL
-
-  [<tr height="200"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="1007"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="   00523   "> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200.25"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200.7"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200."> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200in"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200.25in"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200 %"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200 abc"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200%"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200%abc"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200.25%"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="200.%"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="20.25e2"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="20.25E2"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<col width="200"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="1007"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="   00523   "> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200.25"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200.7"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200."> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200in"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200.25in"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200 %"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200 abc"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200%"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200%abc"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200.25%"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="200.%"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="20.25e2"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="20.25E2"> mapping to <col> width property]
-    expected: FAIL
-
   [<embed hspace="200"> mapping to <embed> marginLeft property]
     expected: FAIL
 
@@ -4645,30 +4453,3 @@
 
   [<source height="0px"> mapping to <img> height property]
     expected: FAIL
-
-  [<table height="0"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="0%"> mapping to <table> height property]
-    expected: FAIL
-
-  [<table height="0px"> mapping to <table> height property]
-    expected: FAIL
-
-  [<tr height="0"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="0%"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<tr height="0px"> mapping to <tr> height property]
-    expected: FAIL
-
-  [<col width="0"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="0%"> mapping to <col> width property]
-    expected: FAIL
-
-  [<col width="0px"> mapping to <col> width property]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-attribute.html.ini b/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-attribute.html.ini
index f39600d10df..0612b488c11 100644
--- a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-attribute.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-attribute.html.ini
@@ -2,9 +2,6 @@
   [table tfoot align attribute center is correct]
     expected: FAIL
 
-  [table th align attribute middle is correct]
-    expected: FAIL
-
   [thead background attribute is correct]
     expected: FAIL
 
@@ -17,9 +14,6 @@
   [table thead align attribute justify is correct]
     expected: FAIL
 
-  [tr height attribute pixel is correct]
-    expected: FAIL
-
   [table thead align attribute middle is correct]
     expected: FAIL
 
@@ -56,9 +50,6 @@
   [table tr align attribute justify is correct]
     expected: FAIL
 
-  [th default align attribute is center]
-    expected: FAIL
-
   [th background attribute is correct]
     expected: FAIL
 
@@ -68,12 +59,6 @@
   [table height attribute 110% is correct]
     expected: FAIL
 
-  [th height attribute pixel is correct]
-    expected: FAIL
-
-  [table th align attribute center is correct]
-    expected: FAIL
-
   [table tr align attribute middle is correct]
     expected: FAIL
 
@@ -101,15 +86,9 @@
   [th bgcolor attribute is correct]
     expected: FAIL
 
-  [table height attribute pixel is correct]
-    expected: FAIL
-
   [table col width attribute is correct]
     expected: FAIL
 
-  [td height attribute pixel is correct]
-    expected: FAIL
-
   [table tfoot align attribute left is correct]
     expected: FAIL
 
@@ -163,4 +142,3 @@
 
   [table background attribute is correct]
     expected: FAIL
-
diff --git a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-row-group-height.html.ini b/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-row-group-height.html.ini
deleted file mode 100644
index e23d11f1829..00000000000
--- a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-row-group-height.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[table-row-group-height.html]
-  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-row-height.html.ini b/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-row-height.html.ini
deleted file mode 100644
index cf21f0ef4ff..00000000000
--- a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/tables/table-row-height.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[table-row-height.html]
-  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/crashtests/fieldset-middleclick.html.ini b/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/crashtests/fieldset-middleclick.html.ini
new file mode 100644
index 00000000000..421e7d9d042
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/crashtests/fieldset-middleclick.html.ini
@@ -0,0 +1,2 @@
+[fieldset-middleclick.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/sticky-content.html.ini b/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/sticky-content.html.ini
deleted file mode 100644
index 2e35e0f5e2c..00000000000
--- a/tests/wpt/meta-legacy-layout/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/sticky-content.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[sticky-content.html]
-  expected: FAIL
-
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index 2d3fbf0f308..66e6567502d 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -2,4 +2,4 @@
   type: testharness
   expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
index 4c03d0c5c3d..76e34322dca 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
@@ -2,4 +2,4 @@
   type: testharness
   expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index a24e565bbce..ff6467094b8 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,4 +1,3 @@
 [iframe_sandbox_popups_nonescaping-3.html]
-  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-img-element/image-loading-lazy-subframe-detached-crash.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-img-element/image-loading-lazy-subframe-detached-crash.html.ini
new file mode 100644
index 00000000000..396e716c857
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-img-element/image-loading-lazy-subframe-detached-crash.html.ini
@@ -0,0 +1,2 @@
+[image-loading-lazy-subframe-detached-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-img-element/non-active-document.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
deleted file mode 100644
index 3cdeb8ebcbc..00000000000
--- a/tests/wpt/meta-legacy-layout/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[non-active-document.html]
-  [DOMParser]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/forms/the-input-element/input-valueasdate.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/forms/the-input-element/input-valueasdate.html.ini
index de40fe4facf..8f702be7deb 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/forms/the-input-element/input-valueasdate.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/forms/the-input-element/input-valueasdate.html.ini
@@ -16,12 +16,3 @@
 
   [valueAsDate setter on type time (actual valueAsDate: Thu Jan 01 1970 18:59:00 GMT-0500 (Eastern Standard Time), expected value: 23:59)]
     expected: FAIL
-
-  [valueAsDate setter on type time (new Date("1970-01-01T00:00:00.000Z"))]
-    expected: FAIL
-
-  [valueAsDate setter on type time (new Date("1970-01-01T12:00:00.000Z"))]
-    expected: FAIL
-
-  [valueAsDate setter on type time (new Date("1970-01-01T23:59:00.000Z"))]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/forms/the-input-element/input-valueasnumber.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/forms/the-input-element/input-valueasnumber.html.ini
deleted file mode 100644
index 123706b36a6..00000000000
--- a/tests/wpt/meta-legacy-layout/html/semantics/forms/the-input-element/input-valueasnumber.html.ini
+++ /dev/null
@@ -1,9 +0,0 @@
-[input-valueasnumber.html]
-  [valueAsNumber setter on type time (actual valueAsNumber: 86340000, expected value: 23:59)]
-    expected: FAIL
-
-  [valueAsNumber setter on type time (actual valueAsNumber: 43200000, expected value: 12:00)]
-    expected: FAIL
-
-  [valueAsNumber setter on type time (actual valueAsNumber: 0, expected value: 00:00)]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/interactive-elements/the-details-element/name-attribute.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/interactive-elements/the-details-element/name-attribute.html.ini
index d569dd37abc..567a89b13d3 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/interactive-elements/the-details-element/name-attribute.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/interactive-elements/the-details-element/name-attribute.html.ini
@@ -43,3 +43,6 @@
 
   [handling of insertion of elements into group]
     expected: FAIL
+
+  [basic handling of mutually exclusive details when the element isn't connected]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/interactive-elements/the-dialog-element/showmodal-shadow-sibling-frame-crash.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/interactive-elements/the-dialog-element/showmodal-shadow-sibling-frame-crash.html.ini
new file mode 100644
index 00000000000..ad055e9687e
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/interactive-elements/the-dialog-element/showmodal-shadow-sibling-frame-crash.html.ini
@@ -0,0 +1,2 @@
+[showmodal-shadow-sibling-frame-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/popovers/imperative-invokers.tentative.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/popovers/imperative-invokers.tentative.html.ini
new file mode 100644
index 00000000000..f284dad761d
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/popovers/imperative-invokers.tentative.html.ini
@@ -0,0 +1,31 @@
+[imperative-invokers.tentative.html]
+  expected: ERROR
+  [normal opening]
+    expected: FAIL
+
+  [showPopover(unrelated)]
+    expected: NOTRUN
+
+  [showPopover(popover)]
+    expected: NOTRUN
+
+  [showPopover(contained)]
+    expected: NOTRUN
+
+  [togglePopover(true)]
+    expected: NOTRUN
+
+  [togglePopover({force})]
+    expected: NOTRUN
+
+  [togglePopover(unrelated)]
+    expected: NOTRUN
+
+  [togglePopover(popover)]
+    expected: NOTRUN
+
+  [togglePopover({force, popover})]
+    expected: NOTRUN
+
+  [null isn't a valid Element]
+    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini b/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini
new file mode 100644
index 00000000000..b8bdf33cb65
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini
@@ -0,0 +1,3 @@
+[DOMContentLoaded-defer.html]
+  [The end: DOMContentLoaded and defer scripts]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/webappapis/update-rendering/child-document-raf-order.html.ini b/tests/wpt/meta-legacy-layout/html/webappapis/update-rendering/child-document-raf-order.html.ini
new file mode 100644
index 00000000000..312c6689170
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/webappapis/update-rendering/child-document-raf-order.html.ini
@@ -0,0 +1,3 @@
+[child-document-raf-order.html]
+  [Ordering of steps in "Update the Rendering" - child document requestAnimationFrame order]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/navigation-timing/prefetch-transfer-size-executor.html.ini b/tests/wpt/meta-legacy-layout/navigation-timing/prefetch-transfer-size-executor.html.ini
deleted file mode 100644
index f9951abc0d2..00000000000
--- a/tests/wpt/meta-legacy-layout/navigation-timing/prefetch-transfer-size-executor.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[prefetch-transfer-size-executor.html]
-  expected: TIMEOUT
-  [Navigation timing transfer size for a prefetched navigation should be 0.]
-    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/navigation-timing/prefetch-transfer-size-iframe.html.ini b/tests/wpt/meta-legacy-layout/navigation-timing/prefetch-transfer-size-iframe.html.ini
deleted file mode 100644
index 96e2de6a9f2..00000000000
--- a/tests/wpt/meta-legacy-layout/navigation-timing/prefetch-transfer-size-iframe.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[prefetch-transfer-size-iframe.html]
-  expected: TIMEOUT
-  [Navigation timing transfer size for a prefetched navigation should be 0.]
-    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/resize-observer/multiple-observers-with-mutation-crash.html.ini b/tests/wpt/meta-legacy-layout/resize-observer/multiple-observers-with-mutation-crash.html.ini
new file mode 100644
index 00000000000..6ba19e12903
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/resize-observer/multiple-observers-with-mutation-crash.html.ini
@@ -0,0 +1,2 @@
+[multiple-observers-with-mutation-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/selection/crashtests/selection-modify-line-boundary-around-empty-details.html.ini b/tests/wpt/meta-legacy-layout/selection/crashtests/selection-modify-line-boundary-around-empty-details.html.ini
new file mode 100644
index 00000000000..409ef1d7be1
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/selection/crashtests/selection-modify-line-boundary-around-empty-details.html.ini
@@ -0,0 +1,2 @@
+[selection-modify-line-boundary-around-empty-details.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/webmessaging/with-ports/017.html.ini b/tests/wpt/meta-legacy-layout/webmessaging/with-ports/017.html.ini
new file mode 100644
index 00000000000..c7946fc91b4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/webmessaging/with-ports/017.html.ini
@@ -0,0 +1,4 @@
+[017.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, about:blank]
+    expected: TIMEOUT
diff --git a/tests/wpt/meta/FileAPI/blob/Blob-slice.any.js.ini b/tests/wpt/meta/FileAPI/blob/Blob-slice.any.js.ini
new file mode 100644
index 00000000000..57ce4dda486
--- /dev/null
+++ b/tests/wpt/meta/FileAPI/blob/Blob-slice.any.js.ini
@@ -0,0 +1,110 @@
+[Blob-slice.any.worker.html]
+  [Slicing test: slice (2,1).]
+    expected: FAIL
+
+  [Slicing test: slice (2,2).]
+    expected: FAIL
+
+  [Slicing test: slice (2,3).]
+    expected: FAIL
+
+  [Slicing test: slice (3,0).]
+    expected: FAIL
+
+  [Slicing test: slice (3,1).]
+    expected: FAIL
+
+  [Slicing test: slice (3,2).]
+    expected: FAIL
+
+  [Slicing test: slice (3,3).]
+    expected: FAIL
+
+  [Slicing test: slice (3,4).]
+    expected: FAIL
+
+  [Slicing test: slice (4,0).]
+    expected: FAIL
+
+  [Slicing test: slice (4,1).]
+    expected: FAIL
+
+  [Slicing test: slice (4,2).]
+    expected: FAIL
+
+  [Slicing test: slice (4,3).]
+    expected: FAIL
+
+  [Slicing test: slice (4,4).]
+    expected: FAIL
+
+  [Slicing test: slice (5,1).]
+    expected: FAIL
+
+  [Slicing test: slice (5,2).]
+    expected: FAIL
+
+  [Slicing test: slice (6,0).]
+    expected: FAIL
+
+  [Slicing test: slice (6,1).]
+    expected: FAIL
+
+  [Slicing test: slice (6,2).]
+    expected: FAIL
+
+
+[Blob-slice.any.html]
+  [Slicing test: slice (2,1).]
+    expected: FAIL
+
+  [Slicing test: slice (2,2).]
+    expected: FAIL
+
+  [Slicing test: slice (2,3).]
+    expected: FAIL
+
+  [Slicing test: slice (3,0).]
+    expected: FAIL
+
+  [Slicing test: slice (3,1).]
+    expected: FAIL
+
+  [Slicing test: slice (3,2).]
+    expected: FAIL
+
+  [Slicing test: slice (3,3).]
+    expected: FAIL
+
+  [Slicing test: slice (3,4).]
+    expected: FAIL
+
+  [Slicing test: slice (4,0).]
+    expected: FAIL
+
+  [Slicing test: slice (4,1).]
+    expected: FAIL
+
+  [Slicing test: slice (4,2).]
+    expected: FAIL
+
+  [Slicing test: slice (4,3).]
+    expected: FAIL
+
+  [Slicing test: slice (4,4).]
+    expected: FAIL
+
+  [Slicing test: slice (5,1).]
+    expected: FAIL
+
+  [Slicing test: slice (5,2).]
+    expected: FAIL
+
+  [Slicing test: slice (6,0).]
+    expected: FAIL
+
+  [Slicing test: slice (6,1).]
+    expected: FAIL
+
+  [Slicing test: slice (6,2).]
+    expected: FAIL
diff --git a/tests/wpt/meta/MANIFEST.json b/tests/wpt/meta/MANIFEST.json
index 0c7bd63a7af..66db19e3b25 100644
--- a/tests/wpt/meta/MANIFEST.json
+++ b/tests/wpt/meta/MANIFEST.json
@@ -695,6 +695,13 @@
        {}
       ]
      ],
+     "chrome-365594098-crash.html": [
+      "44cfe30467355ef7a8a1111d4265e445229c2a39",
+      [
+       null,
+       {}
+      ]
+     ],
      "chrome-40286059-crash.html": [
       "cee9d2d97775dacbd7583edf143fd5b06de31bff",
       [
@@ -5076,6 +5083,13 @@
      ]
     },
     "css-values": {
+     "attr-crash.html": [
+      "012dad91cf8f9e93fb93e07ff69a7f08b9e26b31",
+      [
+       null,
+       {}
+      ]
+     ],
      "calc-complex-sign-function-crash.html": [
       "d890c8cdd1add0d86de555d3f8eaf380101fff72",
       [
@@ -5219,6 +5233,13 @@
         null,
         {}
        ]
+      ],
+      "textarea-very-small-zoom-crash.html": [
+       "071aaabe609f75a47722376355febab4c0249dc7",
+       [
+        null,
+        {}
+       ]
       ]
      }
     },
@@ -6853,6 +6874,13 @@
        ]
       },
       "the-frameset-and-frame-elements": {
+       "frame-no-frameset-crash.html": [
+        "b032cab90d32910fe8bfd95f5392ddef3fbf756c",
+        [
+         null,
+         {}
+        ]
+       ],
        "multicol-table-crash.html": [
         "adfb76e15a4d7af987e7d5493ce678a015a8fb87",
         [
@@ -7324,6 +7352,13 @@
         {}
        ]
       ],
+      "popover-hint-crash.tentative.html": [
+       "3de269952624db643f21260ac9a2cb659f5c212c",
+       [
+        null,
+        {}
+       ]
+      ],
       "popover-undefined-remove-crash.html": [
        "3c273ea6f344d179a3d010d20f0779b3721abb40",
        [
@@ -166894,6 +166929,32 @@
        {}
       ]
      ],
+     "aspect-ratio-intrinsic-size-008.html": [
+      "9e5b4e1c0f96332555f063754614070ea5e87da7",
+      [
+       null,
+       [
+        [
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+         [
+          "title",
+          "validation tests for WebNN API scatterND operation"
+         ],
+         [
+          "global",
+          "window,dedicatedworker"
+         ],
+         [
+          "variant",
+          "?cpu"
+         ],
+         [
+          "variant",
+          "?gpu"
+         ],
+         [
+          "variant",
+          "?npu"
+         ],
+         [
+          "script",
+          "../resources/utils_validation.js"
+         ]
+        ]
+       }
+      ],
+      [
+       "webnn/validation_tests/scatterND.https.any.worker.html?gpu",
+       {
+        "script_metadata": [
+         [
+          "title",
+          "validation tests for WebNN API scatterND operation"
+         ],
+         [
+          "global",
+          "window,dedicatedworker"
+         ],
+         [
+          "variant",
+          "?cpu"
+         ],
+         [
+          "variant",
+          "?gpu"
+         ],
+         [
+          "variant",
+          "?npu"
+         ],
+         [
+          "script",
+          "../resources/utils_validation.js"
+         ]
+        ]
+       }
+      ],
+      [
+       "webnn/validation_tests/scatterND.https.any.worker.html?npu",
+       {
+        "script_metadata": [
+         [
+          "title",
+          "validation tests for WebNN API scatterND operation"
+         ],
+         [
+          "global",
+          "window,dedicatedworker"
+         ],
+         [
+          "variant",
+          "?cpu"
+         ],
+         [
+          "variant",
+          "?gpu"
+         ],
+         [
+          "variant",
+          "?npu"
+         ],
+         [
+          "script",
+          "../resources/utils_validation.js"
+         ]
+        ]
+       }
+      ]
+     ],
      "sigmoid.https.any.js": [
       "271bef211169047249dac7ee51250fa0a72d23a1",
       [
@@ -809795,10 +811618,12 @@
      ]
     ],
     "RTCPeerConnection-generateCertificate.html": [
-     "4cda97e9b7ee5d5c8ec9534edf57f316172af373",
+     "534df68083924ab630c3c5560f877be0a40a960a",
      [
       null,
-      {}
+      {
+       "timeout": "long"
+      }
      ]
     ],
     "RTCPeerConnection-getStats.https.html": [
@@ -811092,7 +812917,7 @@
      ]
     ],
     "RTCRtpScriptTransform-encoded-transform.https.html": [
-     "76aaced9bfc9d4066148f3e739cc62ffc2a2485b",
+     "c935644f0c6f7e71b50cd241bebdea9cc92826e7",
      [
       null,
       {
@@ -811392,6 +813217,15 @@
       {}
      ]
     ],
+    "RTCRtpEncodingParameters-scaleResolutionDownTo.https.html": [
+     "01205b889bb68ec64fc9f97a2c26d01e00ac70ff",
+     [
+      null,
+      {
+       "timeout": "long"
+      }
+     ]
+    ],
     "RTCRtpParameters-adaptivePtime.html": [
      "8a7a8b6ba689c2b671e22d91a371777fde581f3a",
      [
@@ -856834,7 +858668,14 @@
        },
        "navigation_started": {
         "navigation_started.py": [
-         "bc711814d3aa11b52db1d2f98774650802a17024",
+         "24fcb48d29a1865b69f7cf668e3d4a81ac7efc79",
+         [
+          null,
+          {}
+         ]
+        ],
+        "navigation_started_initial_navigation_tentative.py": [
+         "87b18a8b9090cce6ad79a2cc813ffe2e958096e8",
          [
           null,
           {}
@@ -857440,7 +859281,7 @@
        },
        "continue_response": {
         "cookies.py": [
-         "e77bf83cde14d4cd304350b2fc72820f5112645e",
+         "d9280067a0f7fb7871ddafc71bc9bb66c26abe83",
          [
           null,
           {}
diff --git a/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html.ini b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html.ini
new file mode 100644
index 00000000000..026c19a077e
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html.ini
@@ -0,0 +1,36 @@
+[align-self-default-overflow-htb-ltr-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html.ini b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html.ini
new file mode 100644
index 00000000000..8b004f7f0a2
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html.ini
@@ -0,0 +1,36 @@
+[align-self-default-overflow-htb-ltr-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html.ini b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html.ini
new file mode 100644
index 00000000000..1dbdfb7753c
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html.ini
@@ -0,0 +1,36 @@
+[align-self-default-overflow-htb-rtl-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html.ini b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html.ini
new file mode 100644
index 00000000000..d550388774c
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html.ini
@@ -0,0 +1,36 @@
+[align-self-default-overflow-htb-rtl-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html.ini b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html.ini
new file mode 100644
index 00000000000..9474e97322e
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html.ini
@@ -0,0 +1,42 @@
+[align-self-default-overflow-vrl-ltr-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html.ini b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html.ini
new file mode 100644
index 00000000000..6da258669a4
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html.ini
@@ -0,0 +1,42 @@
+[align-self-default-overflow-vrl-ltr-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html.ini b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html.ini
new file mode 100644
index 00000000000..f349bdd8736
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html.ini
@@ -0,0 +1,42 @@
+[align-self-default-overflow-vrl-rtl-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html.ini b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html.ini
new file mode 100644
index 00000000000..2cabe993c7d
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html.ini
@@ -0,0 +1,42 @@
+[align-self-default-overflow-vrl-rtl-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html.ini b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html.ini
new file mode 100644
index 00000000000..578f39ad3ee
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html.ini
@@ -0,0 +1,36 @@
+[justify-self-default-overflow-htb-ltr-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html.ini b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html.ini
new file mode 100644
index 00000000000..762df281eb9
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html.ini
@@ -0,0 +1,36 @@
+[justify-self-default-overflow-htb-ltr-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html.ini b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html.ini
new file mode 100644
index 00000000000..adde60d71df
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html.ini
@@ -0,0 +1,42 @@
+[justify-self-default-overflow-htb-rtl-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html.ini b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html.ini
new file mode 100644
index 00000000000..9317fb60486
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html.ini
@@ -0,0 +1,42 @@
+[justify-self-default-overflow-htb-rtl-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html.ini b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html.ini
new file mode 100644
index 00000000000..9a3cd55ee2d
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html.ini
@@ -0,0 +1,36 @@
+[justify-self-default-overflow-vrl-ltr-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html.ini b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html.ini
new file mode 100644
index 00000000000..f628978e789
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html.ini
@@ -0,0 +1,36 @@
+[justify-self-default-overflow-vrl-ltr-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html.ini b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html.ini
new file mode 100644
index 00000000000..d86dbb9689b
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html.ini
@@ -0,0 +1,42 @@
+[justify-self-default-overflow-vrl-rtl-htb.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html.ini b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html.ini
new file mode 100644
index 00000000000..fc225bf963c
--- /dev/null
+++ b/tests/wpt/meta/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html.ini
@@ -0,0 +1,42 @@
+[justify-self-default-overflow-vrl-rtl-vrl.html]
+  [.item 1]
+    expected: FAIL
+
+  [.item 2]
+    expected: FAIL
+
+  [.item 3]
+    expected: FAIL
+
+  [.item 4]
+    expected: FAIL
+
+  [.item 5]
+    expected: FAIL
+
+  [.item 6]
+    expected: FAIL
+
+  [.item 7]
+    expected: FAIL
+
+  [.item 8]
+    expected: FAIL
+
+  [.item 9]
+    expected: FAIL
+
+  [.item 10]
+    expected: FAIL
+
+  [.item 11]
+    expected: FAIL
+
+  [.item 12]
+    expected: FAIL
+
+  [.item 13]
+    expected: FAIL
+
+  [.item 14]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-cascade/at-scope-parsing.html.ini b/tests/wpt/meta/css/css-cascade/at-scope-parsing.html.ini
index e43e2bf5971..b8920a1dc19 100644
--- a/tests/wpt/meta/css/css-cascade/at-scope-parsing.html.ini
+++ b/tests/wpt/meta/css/css-cascade/at-scope-parsing.html.ini
@@ -127,3 +127,27 @@
 
   [@scope (.a) from (.c) is not valid]
     expected: FAIL
+
+  [@scope (.c <> .d) is not valid]
+    expected: FAIL
+
+  [@scope (.a, .c <> .d) is not valid]
+    expected: FAIL
+
+  [@scope (.a <> .b, .c) is not valid]
+    expected: FAIL
+
+  [@scope (div::before) is not valid]
+    expected: FAIL
+
+  [@scope (div::after) is not valid]
+    expected: FAIL
+
+  [@scope (slotted(div)) is not valid]
+    expected: FAIL
+
+  [@scope (.a) to (div::before) is not valid]
+    expected: FAIL
+
+  [@scope (> &) to (>>) is not valid]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-cascade/scope-nesting.html.ini b/tests/wpt/meta/css/css-cascade/scope-nesting.html.ini
index 0d535cd082b..048c63106f0 100644
--- a/tests/wpt/meta/css/css-cascade/scope-nesting.html.ini
+++ b/tests/wpt/meta/css/css-cascade/scope-nesting.html.ini
@@ -46,3 +46,6 @@
 
   [Scoped nested group rule]
     expected: FAIL
+
+  [Scoped nested within another scope]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-color/parsing/color-computed-relative-color.html.ini b/tests/wpt/meta/css/css-color/parsing/color-computed-relative-color.html.ini
index 0b4190c2b1f..d4e0b6dccc5 100644
--- a/tests/wpt/meta/css/css-color/parsing/color-computed-relative-color.html.ini
+++ b/tests/wpt/meta/css/css-color/parsing/color-computed-relative-color.html.ini
@@ -3688,3 +3688,12 @@
 
   [Property background-color value 'color(from currentColor xyz-d65 x y z)']
     expected: FAIL
+
+  [Property background-color value 'rgb(from color-mix(in srgb, currentColor, red) r g b / alpha)']
+    expected: FAIL
+
+  [Property background-color value 'rgb(from rgb(from currentColor r g b) r g b)']
+    expected: FAIL
+
+  [Property background-color value 'hsl(from currentColor calc((h / 360) * 360deg) s l)']
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-color/parsing/color-valid-color-function.html.ini b/tests/wpt/meta/css/css-color/parsing/color-valid-color-function.html.ini
index 4f9ec6e35b4..f15c16c1cd1 100644
--- a/tests/wpt/meta/css/css-color/parsing/color-valid-color-function.html.ini
+++ b/tests/wpt/meta/css/css-color/parsing/color-valid-color-function.html.ini
@@ -214,3 +214,102 @@
 
   [e.style['color'\] = "color(xyz-d65 0.5 0 0 / calc(0.5 + (sign(1em - 10px) * 0.1)))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "color(srgb calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb-linear calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb-linear calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(srgb-linear calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(a98-rgb calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(a98-rgb calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(a98-rgb calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(rec2020 calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(rec2020 calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(rec2020 calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(prophoto-rgb calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(prophoto-rgb calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(prophoto-rgb calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(display-p3 calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(display-p3 calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(display-p3 calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz calc(50% + (sign(1em - 10px) * 10%)) 0 0 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz 0.5 0 0 / calc(50% + (sign(1em - 10px) * 10%)))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 calc(50% + (sign(1em - 10px) * 10%)) 0 0 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d50 0.5 0 0 / calc(50% + (sign(1em - 10px) * 10%)))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 calc(50% + (sign(1em - 10px) * 10%)) 0 0 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color(xyz-d65 0.5 0 0 / calc(50% + (sign(1em - 10px) * 10%)))" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-color/parsing/color-valid-hsl.html.ini b/tests/wpt/meta/css/css-color/parsing/color-valid-hsl.html.ini
index cd0b66b6ed4..552ff706928 100644
--- a/tests/wpt/meta/css/css-color/parsing/color-valid-hsl.html.ini
+++ b/tests/wpt/meta/css/css-color/parsing/color-valid-hsl.html.ini
@@ -46,3 +46,9 @@
 
   [e.style['color'\] = "hsla(0 0 0 / calc(0.75 + (sign(1em - 10px) * 0.1)))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "hsla(calc(50deg + (sign(1em - 10px) * 10deg)) -100 300 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "hsla(calc(50deg + (sign(1em - 10px) * 10deg)) -100% 300% / 0.5)" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-color/parsing/color-valid-lab.html.ini b/tests/wpt/meta/css/css-color/parsing/color-valid-lab.html.ini
index 04fe3118119..3ba45cad755 100644
--- a/tests/wpt/meta/css/css-color/parsing/color-valid-lab.html.ini
+++ b/tests/wpt/meta/css/css-color/parsing/color-valid-lab.html.ini
@@ -106,3 +106,99 @@
 
   [e.style['color'\] = "oklch(0.6 0.3 50deg / calc(50% + (sign(1em - 10px) * 10%)))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "lab(calc(50 * 3) calc(0.5 - 1) calc(1.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(calc(-50 * 3) calc(0.5 + 1) calc(-1.5) / calc(-0.5 * 2))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(-200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(none 20 calc(0.5))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lab(calc(infinity) 0 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(calc(0.5 * 3) calc(0.5 - 1) calc(1.5) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(calc(-0.5 * 3) calc(0.5 + 1) calc(-1.5) / calc(-0.5 * 2))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(-200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(none 0.2 calc(0.5))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklab(calc(infinity) 0 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(50 * 3) calc(0.5 - 1) calc(20deg * 2) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(-50 * 3) calc(0.5 + 1) calc(-20deg * 2) / calc(-0.5 * 2))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(-200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(50%) -100 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(none 20 calc(0.5))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(calc(infinity) 0 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "lch(50 calc(-infinity) 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(0.5 * 3) calc(0.5 - 1) calc(20deg * 2) / calc(-0.5 + 1))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(-0.5 * 3) calc(0.5 + 1) calc(-20deg * 2) / calc(-0.5 * 2))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(50%) 50% 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(-200 calc(50%) 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(50%) -100 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(none 0.2 calc(0.5))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(calc(infinity) 0 0)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "oklch(0.5 calc(-infinity) 0)" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-color/parsing/color-valid-rgb.html.ini b/tests/wpt/meta/css/css-color/parsing/color-valid-rgb.html.ini
index 02425c44e19..7ec2565223e 100644
--- a/tests/wpt/meta/css/css-color/parsing/color-valid-rgb.html.ini
+++ b/tests/wpt/meta/css/css-color/parsing/color-valid-rgb.html.ini
@@ -52,3 +52,15 @@
 
   [e.style['color'\] = "rgba(0% 0 0% / calc(0.75 + (sign(1em - 10px) * 0.1)))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "rgba(calc(50 + (sign(1em - 10px) * 10)) 400 -400 / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "rgba(calc(50% + (sign(1em - 10px) * 10%)) 400% -400% / 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "rgba(calc(50 + (sign(1em - 10px) * 10)), 400, -400, 0.5)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "rgba(calc(50% + (sign(1em - 10px) * 10%)), 400%, -400%, 0.5)" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/at-container-snapped-parsing.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/at-container-snapped-parsing.html.ini
new file mode 100644
index 00000000000..6ad6378fe26
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/at-container-snapped-parsing.html.ini
@@ -0,0 +1,2 @@
+[at-container-snapped-parsing.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/at-container-snapped-serialization.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/at-container-snapped-serialization.html.ini
new file mode 100644
index 00000000000..35c90640507
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/at-container-snapped-serialization.html.ini
@@ -0,0 +1,2 @@
+[at-container-snapped-serialization.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/at-container-stuck-parsing.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/at-container-stuck-parsing.html.ini
new file mode 100644
index 00000000000..849d4af452a
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/at-container-stuck-parsing.html.ini
@@ -0,0 +1,2 @@
+[at-container-stuck-parsing.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/at-container-stuck-serialization.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/at-container-stuck-serialization.html.ini
new file mode 100644
index 00000000000..95ca2e600cb
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/at-container-stuck-serialization.html.ini
@@ -0,0 +1,2 @@
+[at-container-stuck-serialization.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-computed.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-computed.html.ini
new file mode 100644
index 00000000000..bf71bdf192b
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-computed.html.ini
@@ -0,0 +1,2 @@
+[container-type-scroll-state-computed.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-containment.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-containment.html.ini
new file mode 100644
index 00000000000..6816d82fe23
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-containment.html.ini
@@ -0,0 +1,3 @@
+[container-type-scroll-state-containment.html]
+  [container-type:scroll-state does not apply size containment]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-parsing.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-parsing.html.ini
new file mode 100644
index 00000000000..77be49bdc31
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/container-type-scroll-state-parsing.html.ini
@@ -0,0 +1,2 @@
+[container-type-scroll-state-parsing.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-initially-snapped.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-initially-snapped.html.ini
new file mode 100644
index 00000000000..0b354083d7a
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-initially-snapped.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-initially-snapped.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-initially-stuck.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-initially-stuck.html.ini
new file mode 100644
index 00000000000..7260020fd97
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-initially-stuck.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-initially-stuck.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-change.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-change.html.ini
new file mode 100644
index 00000000000..346d353eab5
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-change.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-snapped-change.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html.ini
new file mode 100644
index 00000000000..a1cd47a47cc
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-snapped-container-type-change.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-wm.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-wm.html.ini
new file mode 100644
index 00000000000..a91d853ebd3
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/scroll-state-snapped-wm.html.ini
@@ -0,0 +1,2 @@
+[scroll-state-snapped-wm.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-conditional/container-queries/style-query-document-element.html.ini b/tests/wpt/meta/css/css-conditional/container-queries/style-query-document-element.html.ini
new file mode 100644
index 00000000000..d59e1b1536d
--- /dev/null
+++ b/tests/wpt/meta/css/css-conditional/container-queries/style-query-document-element.html.ini
@@ -0,0 +1,2 @@
+[style-query-document-element.html]
+  expected: ERROR
diff --git a/tests/wpt/meta/css/css-flexbox/aspect-ratio-intrinsic-size-008.html.ini b/tests/wpt/meta/css/css-flexbox/aspect-ratio-intrinsic-size-008.html.ini
new file mode 100644
index 00000000000..9c975ff2eb9
--- /dev/null
+++ b/tests/wpt/meta/css/css-flexbox/aspect-ratio-intrinsic-size-008.html.ini
@@ -0,0 +1,2 @@
+[aspect-ratio-intrinsic-size-008.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-flexbox/aspect-ratio-intrinsic-size-009.html.ini b/tests/wpt/meta/css/css-flexbox/aspect-ratio-intrinsic-size-009.html.ini
new file mode 100644
index 00000000000..77402806536
--- /dev/null
+++ b/tests/wpt/meta/css/css-flexbox/aspect-ratio-intrinsic-size-009.html.ini
@@ -0,0 +1,2 @@
+[aspect-ratio-intrinsic-size-009.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html.ini b/tests/wpt/meta/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html.ini
index 88df374d5de..626072a9771 100644
--- a/tests/wpt/meta/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html.ini
+++ b/tests/wpt/meta/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html.ini
@@ -25,3 +25,9 @@
 
   [.flexbox 18]
     expected: FAIL
+
+  [.flexbox 6]
+    expected: FAIL
+
+  [.flexbox 9]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-flexbox/justify-content-sideways-001.html.ini b/tests/wpt/meta/css/css-flexbox/justify-content-sideways-001.html.ini
new file mode 100644
index 00000000000..d23df3395f6
--- /dev/null
+++ b/tests/wpt/meta/css/css-flexbox/justify-content-sideways-001.html.ini
@@ -0,0 +1,2 @@
+[justify-content-sideways-001.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-fonts/font-style-sign-function.html.ini b/tests/wpt/meta/css/css-fonts/font-style-sign-function.html.ini
new file mode 100644
index 00000000000..62e27398853
--- /dev/null
+++ b/tests/wpt/meta/css/css-fonts/font-style-sign-function.html.ini
@@ -0,0 +1,3 @@
+[font-style-sign-function.html]
+  [Property font-style value 'oblique calc(sign(1rem - 1px) * 10deg)']
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-masonry/tentative/parsing/masonry-slack-computed.html.ini b/tests/wpt/meta/css/css-masonry/tentative/parsing/masonry-slack-computed.html.ini
new file mode 100644
index 00000000000..5bfdcbd90f4
--- /dev/null
+++ b/tests/wpt/meta/css/css-masonry/tentative/parsing/masonry-slack-computed.html.ini
@@ -0,0 +1,18 @@
+[masonry-slack-computed.html]
+  [Property masonry-slack value 'normal']
+    expected: FAIL
+
+  [Property masonry-slack value '10px']
+    expected: FAIL
+
+  [Property masonry-slack value '20%']
+    expected: FAIL
+
+  [Property masonry-slack value 'calc(20% + 10px)']
+    expected: FAIL
+
+  [Property masonry-slack value 'calc(-0.5em + 10px)']
+    expected: FAIL
+
+  [Property masonry-slack value 'calc(0.5em + 10px)']
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-masonry/tentative/parsing/masonry-slack-valid.html.ini b/tests/wpt/meta/css/css-masonry/tentative/parsing/masonry-slack-valid.html.ini
new file mode 100644
index 00000000000..8401d20fa57
--- /dev/null
+++ b/tests/wpt/meta/css/css-masonry/tentative/parsing/masonry-slack-valid.html.ini
@@ -0,0 +1,18 @@
+[masonry-slack-valid.html]
+  [e.style['masonry-slack'\] = "normal" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "0" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "1px" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "calc(2em + 3ex)" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "4%" should set the property value]
+    expected: FAIL
+
+  [e.style['masonry-slack'\] = "5vmin" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/line-clamp/webkit-line-clamp-049.html.ini b/tests/wpt/meta/css/css-overflow/line-clamp/webkit-line-clamp-049.html.ini
new file mode 100644
index 00000000000..eadc206ac02
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/line-clamp/webkit-line-clamp-049.html.ini
@@ -0,0 +1,2 @@
+[webkit-line-clamp-049.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-overflow/scrollbar-gutter-scroll-into-view.html.ini b/tests/wpt/meta/css/css-overflow/scrollbar-gutter-scroll-into-view.html.ini
new file mode 100644
index 00000000000..69d00bd9309
--- /dev/null
+++ b/tests/wpt/meta/css/css-overflow/scrollbar-gutter-scroll-into-view.html.ini
@@ -0,0 +1,2 @@
+[scrollbar-gutter-scroll-into-view.html]
+  expected: FAIL
diff --git a/tests/wpt/meta/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html.ini b/tests/wpt/meta/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html.ini
new file mode 100644
index 00000000000..0e491ff7f09
--- /dev/null
+++ b/tests/wpt/meta/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html.ini
@@ -0,0 +1,3 @@
+[sign-function-aspect-ratio.html]
+  [Property aspect-ratio value 'sign(1rem - 1px) / sign(1rem - 1px)']
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-syntax/urange-parsing.html.ini b/tests/wpt/meta/css/css-syntax/urange-parsing.html.ini
index d8fbbaa6d79..1eb48379d95 100644
--- a/tests/wpt/meta/css/css-syntax/urange-parsing.html.ini
+++ b/tests/wpt/meta/css/css-syntax/urange-parsing.html.ini
@@ -277,3 +277,6 @@
 
   ["u+??????" is invalid]
     expected: FAIL
+
+  ["()U+123" is invalid]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html.ini b/tests/wpt/meta/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html.ini
index cae6d18bce1..64e2ff4b841 100644
--- a/tests/wpt/meta/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html.ini
+++ b/tests/wpt/meta/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html.ini
@@ -11,3 +11,5 @@
   [KeyframeEffect.getKeyframes() returns frames unaffected by a non-default easing function]
     expected: FAIL
 
+  [KeyframeEffect.getKeyframes() returns expected frames for a custom property transition]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-transitions/custom-property-and-allow-discrete.html.ini b/tests/wpt/meta/css/css-transitions/custom-property-and-allow-discrete.html.ini
new file mode 100644
index 00000000000..4f2a2d66b33
--- /dev/null
+++ b/tests/wpt/meta/css/css-transitions/custom-property-and-allow-discrete.html.ini
@@ -0,0 +1,6 @@
+[custom-property-and-allow-discrete.html]
+  [It is possible to transition an unregistered custom property using "transition-behavior: allows-discrete"]
+    expected: FAIL
+
+  [It is possible to transition an unregistered custom property using "transition-behavior: allows-discrete" when setting "transition-property" in the style change that yields the transition]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-values/attr-all-types.html.ini b/tests/wpt/meta/css/css-values/attr-all-types.html.ini
index 7b12c5359c8..78c214e0e29 100644
--- a/tests/wpt/meta/css/css-values/attr-all-types.html.ini
+++ b/tests/wpt/meta/css/css-values/attr-all-types.html.ini
@@ -47,21 +47,9 @@
   [CSS Values and Units Test: attr 21]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 28]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 29]
-    expected: FAIL
-
   [CSS Values and Units Test: attr 33]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 34]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 35]
-    expected: FAIL
-
   [CSS Values and Units Test: attr 36]
     expected: FAIL
 
@@ -131,12 +119,6 @@
   [CSS Values and Units Test: attr 17]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 22]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 23]
-    expected: FAIL
-
   [CSS Values and Units Test: attr 24]
     expected: FAIL
 
@@ -155,20 +137,47 @@
   [CSS Values and Units Test: attr 60]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 69]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 70]
-    expected: FAIL
-
-  [CSS Values and Units Test: attr 71]
-    expected: FAIL
-
   [CSS Values and Units Test: attr 72]
     expected: FAIL
 
   [CSS Values and Units Test: attr 15]
     expected: FAIL
 
-  [CSS Values and Units Test: attr 30]
+  [CSS Values and Units Test: attr 19]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 20]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 25]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 26]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 27]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 31]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 32]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 61]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 62]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 63]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 73]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 74]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr 75]
     expected: FAIL
diff --git a/tests/wpt/meta/css/css-values/attr-security.html.ini b/tests/wpt/meta/css/css-values/attr-security.html.ini
new file mode 100644
index 00000000000..7d110205177
--- /dev/null
+++ b/tests/wpt/meta/css/css-values/attr-security.html.ini
@@ -0,0 +1,36 @@
+[attr-security.html]
+  [CSS Values and Units Test: attr() security limitations]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 3]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 5]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 6]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 8]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 9]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 11]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 12]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 14]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 15]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 17]
+    expected: FAIL
+
+  [CSS Values and Units Test: attr() security limitations 19]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom-view/MediaQueryListEvent.html.ini b/tests/wpt/meta/css/cssom-view/MediaQueryListEvent.html.ini
deleted file mode 100644
index 403fdc6574c..00000000000
--- a/tests/wpt/meta/css/cssom-view/MediaQueryListEvent.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[MediaQueryListEvent.html]
-  [argument of addListener]
-    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom-view/smooth-scroll-nonstop.html.ini b/tests/wpt/meta/css/cssom-view/smooth-scroll-nonstop.html.ini
index fb43d2b8fa1..82dd7574d17 100644
--- a/tests/wpt/meta/css/cssom-view/smooth-scroll-nonstop.html.ini
+++ b/tests/wpt/meta/css/cssom-view/smooth-scroll-nonstop.html.ini
@@ -1,4 +1,6 @@
 [smooth-scroll-nonstop.html]
-  expected: TIMEOUT
   [noop scrollIntoView doesn't interrupt ongoing smooth scroll.]
-    expected: TIMEOUT
+    expected: FAIL
+
+  [noop scrollTo doesn't interrupt ongoing smooth scroll.]
+    expected: FAIL
diff --git a/tests/wpt/meta/fetch/api/request/destination/fetch-destination-no-load-event.https.html.ini b/tests/wpt/meta/fetch/api/request/destination/fetch-destination-no-load-event.https.html.ini
index ab8e3635eac..56032a98be1 100644
--- a/tests/wpt/meta/fetch/api/request/destination/fetch-destination-no-load-event.https.html.ini
+++ b/tests/wpt/meta/fetch/api/request/destination/fetch-destination-no-load-event.https.html.ini
@@ -22,3 +22,6 @@
 
   [@import fetches with a "style" Request.destination]
     expected: FAIL
+
+  [SVG use element fetches with an "image" Request.destination]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini
new file mode 100644
index 00000000000..4ecd6d9f753
--- /dev/null
+++ b/tests/wpt/meta/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-cross-origin.sub.window.js.ini
@@ -0,0 +1,3 @@
+[navigation-unload-cross-origin.sub.window.html]
+  [Cross-origin navigation started from unload handler must be ignored]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/dom/elements/the-innertext-and-outertext-properties/getter.html.ini b/tests/wpt/meta/html/dom/elements/the-innertext-and-outertext-properties/getter.html.ini
index dad00323482..e73fa2e7229 100644
--- a/tests/wpt/meta/html/dom/elements/the-innertext-and-outertext-properties/getter.html.ini
+++ b/tests/wpt/meta/html/dom/elements/the-innertext-and-outertext-properties/getter.html.ini
@@ -775,3 +775,27 @@
 
   [opened <details> content shown ("<div><details open><summary>abc</summary>123")]
     expected: FAIL
+
+  [Whitespace around inline-flex should not be collapsed ("<div>abc <span style='display:inline-flex'></span> def")]
+    expected: FAIL
+
+  [Trailing space at end of inline-flex should be collapsed ("<div>abc <span style='display:inline-flex'> def </span> ghi")]
+    expected: FAIL
+
+  [Whitespace around inline-grid should not be collapsed ("<div>abc <span style='display:inline-grid'></span> def")]
+    expected: FAIL
+
+  [Trailing space at end of grid-flex should be collapsed ("<div>abc <span style='display:inline-grid'> def </span> ghi")]
+    expected: FAIL
+
+  [Whitespace between inline-flex and block should be collapsed ("<div><span style='inline-flex'></span> <div>abc</div>")]
+    expected: FAIL
+
+  [Whitespace between inline-grid and block should be collapsed ("<div><span style='inline-grid'></span> <div>abc</div>")]
+    expected: FAIL
+
+  [Leading/trailing space removal at display:inline-flex boundary ("<div>123<span style='display:inline-flex'> abc </span>def")]
+    expected: FAIL
+
+  [Leading/trailing space removal at display:inline-grid boundary ("<div>123<span style='display:inline-grid'> abc </span>def")]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index 24903b5f66f..d7d0d3ef89d 100644
--- a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,4 +1,4 @@
 [iframe_sandbox_popups_escaping-1.html]
   expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: TIMEOUT
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index d5fd800f09d..653c5e98f2f 100644
--- a/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,4 +1,4 @@
 [iframe_sandbox_popups_nonescaping-3.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
diff --git a/tests/wpt/meta/html/semantics/embedded-content/the-img-element/image-loading-lazy-subframe-detached-crash.html.ini b/tests/wpt/meta/html/semantics/embedded-content/the-img-element/image-loading-lazy-subframe-detached-crash.html.ini
new file mode 100644
index 00000000000..396e716c857
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/embedded-content/the-img-element/image-loading-lazy-subframe-detached-crash.html.ini
@@ -0,0 +1,2 @@
+[image-loading-lazy-subframe-detached-crash.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/html/semantics/forms/form-submission-0/reparent-form-during-planned-navigation-task.html.ini b/tests/wpt/meta/html/semantics/forms/form-submission-0/reparent-form-during-planned-navigation-task.html.ini
new file mode 100644
index 00000000000..7682a4830bf
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/forms/form-submission-0/reparent-form-during-planned-navigation-task.html.ini
@@ -0,0 +1,4 @@
+[reparent-form-during-planned-navigation-task.html]
+  expected: TIMEOUT
+  [reparent-form-during-planned-navigation-task]
+    expected: TIMEOUT
diff --git a/tests/wpt/meta/html/semantics/forms/the-fieldset-element/disabled-003.html.ini b/tests/wpt/meta/html/semantics/forms/the-fieldset-element/disabled-003.html.ini
new file mode 100644
index 00000000000..5983b46a9ab
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/forms/the-fieldset-element/disabled-003.html.ini
@@ -0,0 +1,2 @@
+[disabled-003.html]
+  expected: CRASH
diff --git a/tests/wpt/meta/html/semantics/interactive-elements/the-details-element/name-attribute.html.ini b/tests/wpt/meta/html/semantics/interactive-elements/the-details-element/name-attribute.html.ini
index d569dd37abc..567a89b13d3 100644
--- a/tests/wpt/meta/html/semantics/interactive-elements/the-details-element/name-attribute.html.ini
+++ b/tests/wpt/meta/html/semantics/interactive-elements/the-details-element/name-attribute.html.ini
@@ -43,3 +43,6 @@
 
   [handling of insertion of elements into group]
     expected: FAIL
+
+  [basic handling of mutually exclusive details when the element isn't connected]
+    expected: FAIL
diff --git a/tests/wpt/meta/html/semantics/popovers/imperative-invokers.tentative.html.ini b/tests/wpt/meta/html/semantics/popovers/imperative-invokers.tentative.html.ini
new file mode 100644
index 00000000000..f284dad761d
--- /dev/null
+++ b/tests/wpt/meta/html/semantics/popovers/imperative-invokers.tentative.html.ini
@@ -0,0 +1,31 @@
+[imperative-invokers.tentative.html]
+  expected: ERROR
+  [normal opening]
+    expected: FAIL
+
+  [showPopover(unrelated)]
+    expected: NOTRUN
+
+  [showPopover(popover)]
+    expected: NOTRUN
+
+  [showPopover(contained)]
+    expected: NOTRUN
+
+  [togglePopover(true)]
+    expected: NOTRUN
+
+  [togglePopover({force})]
+    expected: NOTRUN
+
+  [togglePopover(unrelated)]
+    expected: NOTRUN
+
+  [togglePopover(popover)]
+    expected: NOTRUN
+
+  [togglePopover({force, popover})]
+    expected: NOTRUN
+
+  [null isn't a valid Element]
+    expected: NOTRUN
diff --git a/tests/wpt/meta/navigation-timing/test-navigation-type-reload.html.ini b/tests/wpt/meta/navigation-timing/test-navigation-type-reload.html.ini
index 97c76fe9560..20d32f43049 100644
--- a/tests/wpt/meta/navigation-timing/test-navigation-type-reload.html.ini
+++ b/tests/wpt/meta/navigation-timing/test-navigation-type-reload.html.ini
@@ -10,3 +10,9 @@
 
   [Reload domInteractive > Original domInteractive]
     expected: FAIL
+
+  [Reload domContentLoadedEventStart > Original domContentLoadedEventStart]
+    expected: FAIL
+
+  [Reload fetchStart > Original fetchStart]
+    expected: FAIL
diff --git a/tests/wpt/meta/webxr/render_state_update.https.html.ini b/tests/wpt/meta/webxr/render_state_update.https.html.ini
new file mode 100644
index 00000000000..0e57356683e
--- /dev/null
+++ b/tests/wpt/meta/webxr/render_state_update.https.html.ini
@@ -0,0 +1,2 @@
+[render_state_update.https.html]
+  expected: ERROR
diff --git a/tests/wpt/tests/.github/workflows/check-workflow-run.yml b/tests/wpt/tests/.github/workflows/check-workflow-run.yml
new file mode 100644
index 00000000000..87670651d98
--- /dev/null
+++ b/tests/wpt/tests/.github/workflows/check-workflow-run.yml
@@ -0,0 +1,43 @@
+name: Check workflow_run
+
+on:
+  workflow_call:
+    inputs:
+      check-refs:
+        description: "Refs to check whether they've been updated"
+        required: true
+        type: string
+    outputs:
+      updated-refs:
+        description: "Refs which have been updated"
+        value: ${{ jobs.check-workflow-run.outputs.output }}
+
+jobs:
+  check-workflow-run:
+    name: "Check for appropriate epochs"
+    if: ${{ github.event_name == 'workflow_run' }}
+    runs-on:
+      - ubuntu-22.04
+    permissions:
+      actions: read
+    outputs:
+      output: ${{ steps.check.outputs.test }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+          sparse-checkout: |
+            tools
+      - uses: actions/download-artifact@v4
+        with:
+          name: git-push-output
+          path: ${{ runner.temp }}/git-push-output.txt
+          run-id: ${{ github.event.workflow_run.id }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+      - id: check
+        run: |-
+          python3 tools/ci/check_for_updated_refs.py >> "$GITHUB_OUTPUT"
+        env:
+          GIT_PUSH_OUTPUT: ${{ runner.temp }}/git-push-output.txt
+          REFS: ${{ inputs.check-refs }}
diff --git a/tests/wpt/tests/.github/workflows/epochs.yml b/tests/wpt/tests/.github/workflows/epochs.yml
index 840d08ffe15..8e85ee75a84 100644
--- a/tests/wpt/tests/.github/workflows/epochs.yml
+++ b/tests/wpt/tests/.github/workflows/epochs.yml
@@ -18,3 +18,10 @@ jobs:
       run: ./tools/ci/epochs_update.sh
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    - name: Upload git-push output
+      uses: actions/upload-artifact@v4
+      with:
+        name: git-push-output
+        path: ${{ runner.temp }}/git-push-output.txt
+        if-no-files-found: error
+        compression-level: 1
diff --git a/tests/wpt/tests/.github/workflows/safari_stable.yml b/tests/wpt/tests/.github/workflows/safari_stable.yml
index 781d79e1101..88f1e72ecc2 100644
--- a/tests/wpt/tests/.github/workflows/safari_stable.yml
+++ b/tests/wpt/tests/.github/workflows/safari_stable.yml
@@ -5,6 +5,11 @@ name: "All Tests: Safari (stable)"
 permissions: {}
 
 on:
+  workflow_dispatch:
+  workflow_run:
+    workflows: [epochs]
+    types:
+      - completed
   push:
     branches:
       - epochs/daily
@@ -17,8 +22,24 @@ env:
   SAFARIDRIVER_DIAGNOSE: false
 
 jobs:
+  check-workflow-run:
+    name: "Check for appropriate epochs"
+    uses: ./.github/workflows/check-workflow-run.yml
+    with:
+      check-refs: '["refs/heads/epochs/daily"]'
+    permissions:
+      actions: read
+
   safari-stable-results:
     name: "All Tests: Safari (stable)"
+    needs: check-workflow-run
+    # We need always() here to then check for success/skipped from the
+    # dependency, as otherwise the skip cascades. See
+    # https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/using-jobs-in-a-workflow#defining-prerequisite-jobs.
+    if: |
+      always() &&
+      (needs.check-workflow-run.result == 'success' || needs.check-workflow-run.result == 'skipped') &&
+      (github.event_name != 'workflow_run' || fromJSON(needs.check-workflow-run.outputs.updated-refs)[0] != null)
     runs-on:
       - self-hosted
       - webkit-ews
@@ -41,7 +62,6 @@ jobs:
         run: |-
           set -eux -o pipefail
           sudo safaridriver --enable
-          defaults write com.apple.Safari WebKitJavaScriptCanOpenWindowsAutomatically 1
       - name: Update hosts
         run: |-
           set -eux -o pipefail
diff --git a/tests/wpt/tests/.github/workflows/safari_technology_preview.yml b/tests/wpt/tests/.github/workflows/safari_technology_preview.yml
index e0732a3e546..7c02951813b 100644
--- a/tests/wpt/tests/.github/workflows/safari_technology_preview.yml
+++ b/tests/wpt/tests/.github/workflows/safari_technology_preview.yml
@@ -5,6 +5,11 @@ name: "All Tests: Safari Technology Preview"
 permissions: {}
 
 on:
+  workflow_dispatch:
+  workflow_run:
+    workflows: [epochs]
+    types:
+      - completed
   push:
     branches:
       - epochs/three_hourly
@@ -17,8 +22,24 @@ env:
   SAFARIDRIVER_DIAGNOSE: false
 
 jobs:
+  check-workflow-run:
+    name: "Check for appropriate epochs"
+    uses: ./.github/workflows/check-workflow-run.yml
+    with:
+      check-refs: '["refs/heads/epochs/three_hourly"]'
+    permissions:
+      actions: read
+
   safari-technology-preview-results:
     name: "All Tests: Safari Technology Preview"
+    needs: check-workflow-run
+    # We need always() here to then check for success/skipped from the
+    # dependency, as otherwise the skip cascades. See
+    # https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/using-jobs-in-a-workflow#defining-prerequisite-jobs.
+    if: |
+      always() &&
+      (needs.check-workflow-run.result == 'success' || needs.check-workflow-run.result == 'skipped') &&
+      (github.event_name != 'workflow_run' || fromJSON(needs.check-workflow-run.outputs.updated-refs)[0] != null)
     runs-on:
       - self-hosted
       - webkit-ews
@@ -44,7 +65,6 @@ jobs:
           ./wpt install --channel preview --download-only -d . --rename STP safari browser
           sudo installer -pkg STP.pkg -target LocalSystem
           sudo /Applications/Safari\ Technology\ Preview.app/Contents/MacOS/safaridriver --enable
-          defaults write com.apple.SafariTechnologyPreview WebKitJavaScriptCanOpenWindowsAutomatically 1
       - name: Update hosts
         run: |-
           set -eux -o pipefail
diff --git a/tests/wpt/tests/FileAPI/reading-data-section/filereader_readAsArrayBuffer.any.js b/tests/wpt/tests/FileAPI/reading-data-section/filereader_readAsArrayBuffer.any.js
index d06e3170782..88c4f4d26cc 100644
--- a/tests/wpt/tests/FileAPI/reading-data-section/filereader_readAsArrayBuffer.any.js
+++ b/tests/wpt/tests/FileAPI/reading-data-section/filereader_readAsArrayBuffer.any.js
@@ -7,6 +7,7 @@
       reader.onload = this.step_func(function(evt) {
         assert_equals(reader.result.byteLength, 4, "The byteLength is 4");
         assert_true(reader.result instanceof ArrayBuffer, "The result is instanceof ArrayBuffer");
+        assert_array_equals(new Uint8Array(reader.result), [84, 69, 83, 84]);
         assert_equals(reader.readyState, reader.DONE);
         this.done();
       });
diff --git a/tests/wpt/tests/FileAPI/support/Blob.js b/tests/wpt/tests/FileAPI/support/Blob.js
index 2c249746858..e8a52425a17 100644
--- a/tests/wpt/tests/FileAPI/support/Blob.js
+++ b/tests/wpt/tests/FileAPI/support/Blob.js
@@ -5,23 +5,16 @@ self.test_blob = (fn, expectations) => {
       type = expectations.type,
       desc = expectations.desc;
 
-  var t = async_test(desc);
-  t.step(function() {
+  promise_test(async (t) => {
     var blob = fn();
     assert_true(blob instanceof Blob);
     assert_false(blob instanceof File);
     assert_equals(blob.type, type);
     assert_equals(blob.size, expected.length);
 
-    var fr = new FileReader();
-    fr.onload = t.step_func_done(function(event) {
-      assert_equals(this.result, expected);
-    }, fr);
-    fr.onerror = t.step_func(function(e) {
-      assert_unreached("got error event on FileReader");
-    });
-    fr.readAsText(blob, "UTF-8");
-  });
+    const text = await blob.text();
+    assert_equals(text, expected);
+  }, desc);
 }
 
 self.test_blob_binary = (fn, expectations) => {
@@ -29,25 +22,18 @@ self.test_blob_binary = (fn, expectations) => {
       type = expectations.type,
       desc = expectations.desc;
 
-  var t = async_test(desc);
-  t.step(function() {
+  promise_test(async (t) => {
     var blob = fn();
     assert_true(blob instanceof Blob);
     assert_false(blob instanceof File);
     assert_equals(blob.type, type);
     assert_equals(blob.size, expected.length);
 
-    var fr = new FileReader();
-    fr.onload = t.step_func_done(function(event) {
-      assert_true(this.result instanceof ArrayBuffer,
-                  "Result should be an ArrayBuffer");
-      assert_array_equals(new Uint8Array(this.result), expected);
-    }, fr);
-    fr.onerror = t.step_func(function(e) {
-      assert_unreached("got error event on FileReader");
-    });
-    fr.readAsArrayBuffer(blob);
-  });
+    const ab = await blob.arrayBuffer();
+    assert_true(ab instanceof ArrayBuffer,
+      "Result should be an ArrayBuffer");
+    assert_array_equals(new Uint8Array(ab), expected);
+  }, desc);
 }
 
 // Assert that two TypedArray objects have the same byte values
diff --git a/tests/wpt/tests/IndexedDB/idbcursor_continue_index.any.js b/tests/wpt/tests/IndexedDB/idbcursor_continue_index.any.js
index 2ac55bce9cb..8bf329c467b 100644
--- a/tests/wpt/tests/IndexedDB/idbcursor_continue_index.any.js
+++ b/tests/wpt/tests/IndexedDB/idbcursor_continue_index.any.js
@@ -1,9 +1,6 @@
 // META: global=window,worker
-// META: title=IDBCursor.continue()
+// META: title=IDBCursor.continue() - index
 // META: script=resources/support.js
-// @author Microsoft <https://www.microsoft.com>
-// @author Odin Hørthe Omdal <mailto:odinho@opera.com>
-// @author Intel <http://www.intel.com>
 
 'use strict';
 
@@ -56,7 +53,7 @@ async_test(t => {
       count++;
     });
   };
-}, "IDBCursor.continue() - index - iterate to the next record");
+}, "Iterate to the next record");
 
 async_test(t => {
   let dbObj = {};
@@ -85,7 +82,7 @@ async_test(t => {
       t.done();
     });
   };
-}, "IDBCursor.continue() - index - attempt to pass a key parameter that is not a valid key");
+}, "Attempt to pass a key parameter that is not a valid key");
 
 async_test(t => {
   let dbObj = {};
@@ -120,7 +117,7 @@ async_test(t => {
       count++;
     });
   };
-}, "IDBCursor.continue() - index - attempt to iterate to the previous record when the direction is set for the next record");
+}, "Attempt to iterate to the previous record when the direction is set for the next record");
 
 async_test(t => {
   let dbObj = {};
@@ -166,7 +163,7 @@ async_test(t => {
       count++;
     });
   };
-}, "IDBCursor.continue() - index - attempt to iterate to the next record when the direction is set for the previous record");
+}, "Attempt to iterate to the next record when the direction is set for the previous record");
 
 async_test(t => {
   let dbObj = {};
@@ -212,7 +209,7 @@ async_test(t => {
       cursor.continue(expected[count] ? expected[count].iKey : undefined);
     });
   };
-}, "IDBCursor.continue() - index - iterate using 'prevunique'");
+}, "Iterate using 'prevunique'");
 
 async_test(t => {
   let dbObj = {};
@@ -258,7 +255,7 @@ async_test(t => {
       cursor.continue(expected[count] ? expected[count].iKey : undefined);
     });
   };
-}, "IDBCursor.continue() - index - iterate using nextunique");
+}, "Iterate using nextunique");
 
 async_test(t => {
   let db;
@@ -309,3 +306,99 @@ async_test(t => {
     });
   }
 }, "If the cursor's source or effective object store has been deleted, the implementation MUST throw a DOMException of type InvalidStateError");
+
+async_test(t => {
+  let db;
+  let count = 0;
+  const records = [
+    { pKey: "primaryKey_0", obj: { iKey: "iKey_0" } },
+    { pKey: "primaryKey_1", obj: { iKey: "iKey_1" } },
+    { pKey: "primaryKey_2", obj: { iKey: "iKey_2" } }
+  ];
+
+  const expected = [
+    ["primaryKey_2", "iKey_2"],
+    ["primaryKey_0", "iKey_0"]
+  ];
+
+  let open_rq = createdb(t);
+  open_rq.onupgradeneeded = function (e) {
+    db = e.target.result;
+    var objStore = db.createObjectStore("test", { keyPath: ["pKey", "obj.iKey"] });
+    objStore.createIndex("index", ["pKey", "obj.iKey"]);
+
+    for (var i = 0; i < records.length; i++)
+      objStore.add(records[i]);
+  };
+
+  open_rq.onsuccess = function (e) {
+    var cursor_rq = db.transaction("test", "readwrite", { durability: 'relaxed' })
+      .objectStore("test")
+      .index("index")
+      .openCursor(null, "prev");
+
+    cursor_rq.onsuccess = t.step_func(function (e) {
+      var cursor = e.target.result;
+      if (!cursor) {
+        assert_equals(count, 2, "cursor run count");
+        t.done();
+      }
+
+      if (count === 0) {
+        e.target.source.objectStore.delete(["primaryKey_1", "iKey_1"]);
+      }
+      assert_array_equals(cursor.key, expected[count], "primary key");
+
+      cursor.continue();
+      count++;
+    });
+  }
+}, "Delete next element, and iterate to it");
+
+async_test(t => {
+  let db;
+  let count = 0;
+  const records = [
+    { pKey: "primaryKey_0", obj: { iKey: "iKey_0" } },
+    { pKey: "primaryKey_2", obj: { iKey: "iKey_2" } }
+  ];
+
+  const expected = [
+    ["primaryKey_2", "iKey_2"],
+    ["primaryKey_1", "iKey_1"],
+    ["primaryKey_0", "iKey_0"]
+  ];
+
+  let open_rq = createdb(t);
+  open_rq.onupgradeneeded = function (e) {
+    db = e.target.result;
+    var objStore = db.createObjectStore("test", { keyPath: "pKey" });
+    objStore.createIndex("index", ["pKey", "obj.iKey"]);
+
+    for (var i = 0; i < records.length; i++)
+      objStore.add(records[i]);
+  };
+
+  open_rq.onsuccess = function (e) {
+    var cursor_rq = db.transaction("test", "readwrite", { durability: 'relaxed' })
+      .objectStore("test")
+      .index("index")
+      .openCursor(null, "prev");
+
+    cursor_rq.onsuccess = t.step_func(function (e) {
+      var cursor = e.target.result;
+      if (!cursor) {
+        assert_equals(count, 3, "cursor run count");
+        t.done();
+      }
+
+      if (count === 0) {
+        e.target.source.objectStore.add({ pKey: "primaryKey_1", obj: { iKey: "iKey_1" } });
+      }
+      assert_array_equals(cursor.key, expected[count], "primary key");
+
+      cursor.continue();
+      count++;
+    });
+  }
+}, "Add next element, and iterate to it");
diff --git a/tests/wpt/tests/IndexedDB/idbcursor_continue_objectstore.any.js b/tests/wpt/tests/IndexedDB/idbcursor_continue_objectstore.any.js
index 76e1c7afe79..dc6f6b4132a 100644
--- a/tests/wpt/tests/IndexedDB/idbcursor_continue_objectstore.any.js
+++ b/tests/wpt/tests/IndexedDB/idbcursor_continue_objectstore.any.js
@@ -1,8 +1,6 @@
 // META: global=window,worker
 // META: title=IDBCursor.continue() - object store
 // META: script=resources/support.js
-// @author Microsoft <https://www.microsoft.com>
-// @author Intel <http://www.intel.com>
 
 'use strict';
 
@@ -22,6 +20,17 @@ function setOnUpgradeNeeded(dbObj, records) {
   };
 }
 
+function setOnUpgradeNeededWithCleanup(t, dbObj, records) {
+  return function (e) {
+    dbObj.db = e.target.result;
+    t.add_cleanup(function () {
+      dbObj.db.close();
+      indexedDB.deleteDatabase(dbObj.db.name);
+    });
+    createObjectStoreAndPopulate(dbObj.db, records);
+  };
+}
+
 async_test(t => {
   let dbObj = {};
   let count = 0;
@@ -54,7 +63,7 @@ async_test(t => {
       count++;
     });
   }
-}, "IDBCursor.continue() - object store - iterate to the next record");
+}, "Iterate to the next record");
 
 async_test(t => {
   let dbObj = {};
@@ -82,7 +91,7 @@ async_test(t => {
     });
   }
 
-}, "IDBCursor.continue() - object store - attempt to pass a key parameter is not a valid key");
+}, "Attempt to pass a key parameter is not a valid key");
 
 async_test(t => {
   let dbObj = {};
@@ -110,7 +119,7 @@ async_test(t => {
       t.done();
     });
   }
-}, "IDBCursor.continue() - object store - attempt to iterate to the previous record when the direction is set for the next record");
+}, "Attempt to iterate to the previous record when the direction is set for the next record");
 
 async_test(t => {
   let dbObj = {};
@@ -155,7 +164,7 @@ async_test(t => {
       count++;
     });
   }
-}, "IDBCursor.continue() - object store - attempt to iterate to the next record when the direction is set for the next record");
+}, "Attempt to iterate to the next record when the direction is set for the next record");
 
 async_test(t => {
   let dbObj = {};
@@ -213,3 +222,85 @@ async_test(t => {
     });
   }
 }, "If the cursor's source or effective object store has been deleted, the implementation MUST throw a DOMException of type InvalidStateError");
+
+async_test(t => {
+  let dbObj = {};
+  let count = 0;
+  const records = [
+    { pKey: "primaryKey_0" },
+    { pKey: "primaryKey_1" },
+    { pKey: "primaryKey_2" }
+  ];
+
+  const expected_records = [
+    { pKey: "primaryKey_0" },
+    { pKey: "primaryKey_2" }
+  ];
+
+  let open_rq = createdb(t);
+  open_rq.onupgradeneeded = setOnUpgradeNeededWithCleanup(t, dbObj, records);
+
+  open_rq.onsuccess = function (e) {
+    let cursor_rq = dbObj.db.transaction("test", "readwrite", { durability: 'relaxed' })
+      .objectStore("test")
+      .openCursor();
+
+    cursor_rq.onsuccess = t.step_func(function (e) {
+      let cursor = e.target.result;
+      if (!cursor) {
+        assert_equals(count, 2, "cursor run count");
+        t.done();
+      }
+
+      let record = cursor.value;
+      if (record.pKey == "primaryKey_0") {
+        e.target.source.delete("primaryKey_1");
+      }
+      assert_equals(record.pKey, expected_records[count].pKey, "primary key");
+
+      cursor.continue();
+      count++;
+    });
+  }
+}, "Delete next element, and iterate to it");
+
+async_test(t => {
+  let dbObj = {};
+  let count = 0;
+  const records = [
+    { pKey: "primaryKey_0" },
+    { pKey: "primaryKey_2" }
+  ];
+
+  const expected_records = [
+    { pKey: "primaryKey_0" },
+    { pKey: "primaryKey_1" },
+    { pKey: "primaryKey_2" }
+  ];
+
+  let open_rq = createdb(t);
+  open_rq.onupgradeneeded = setOnUpgradeNeededWithCleanup(t, dbObj, records);
+
+  open_rq.onsuccess = function (e) {
+    let cursor_rq = dbObj.db.transaction("test", "readwrite", { durability: 'relaxed' })
+      .objectStore("test")
+      .openCursor();
+
+    cursor_rq.onsuccess = t.step_func(function (e) {
+      let cursor = e.target.result;
+      if (!cursor) {
+        assert_equals(count, 3, "cursor run count");
+        t.done();
+      }
+
+      let record = cursor.value;
+      if (record.pKey == "primaryKey_0") {
+        e.target.source.add({ pKey: "primaryKey_1" });
+      }
+      assert_equals(record.pKey, expected_records[count].pKey, "primary key");
+
+      cursor.continue();
+      count++;
+    });
+  }
+}, "Add next element, and iterate to it");
diff --git a/tests/wpt/tests/IndexedDB/idbcursor_iterating.any.js b/tests/wpt/tests/IndexedDB/idbcursor_iterating.any.js
new file mode 100644
index 00000000000..521ed821c9a
--- /dev/null
+++ b/tests/wpt/tests/IndexedDB/idbcursor_iterating.any.js
@@ -0,0 +1,107 @@
+// META: global=window,worker
+// META: title=IDBCursor.continue() - object store
+// META: script=resources/support.js
+
+'use strict';
+
+async_test(t => {
+  let db;
+  let count = 0;
+
+  let open_rq = createdb(t);
+  open_rq.onupgradeneeded = function (e) {
+    db = e.target.result;
+    t.add_cleanup(function () { db.close(); indexedDB.deleteDatabase(db.name); });
+    let objStore = db.createObjectStore("test", { keyPath: "key" });
+
+    for (let i = 0; i < 500; i++)
+      objStore.add({ key: i, val: "val_" + i });
+
+    let rq = objStore.add({ key: 500, val: "val_500" });
+
+    rq.onsuccess = t.step_func(function () {
+      for (let i = 999; i > 500; i--)
+        objStore.add({ key: i, val: "val_" + i });
+    });
+
+    objStore.createIndex('index', ['key', 'val']);
+  };
+
+  open_rq.onsuccess = function (e) {
+    let cursor_rq = db.transaction("test", "readwrite", { durability: 'relaxed' })
+      .objectStore("test")
+      .openCursor();
+
+    cursor_rq.onsuccess = t.step_func(function (e) {
+      let cursor = e.target.result,
+        store = e.target.source;
+      if (!cursor) {
+        assert_equals(count, 997, "cursor run count");
+
+        let rq = e.target.source.count();
+        rq.onsuccess = t.step_func(function (e) {
+          assert_equals(e.target.result, 995, "object count");
+          t.done();
+        });
+        return;
+      }
+
+      switch (cursor.key) {
+        case 10:
+          assert_equals(count, cursor.key, "count");
+          store.delete(11);
+          break;
+
+        case 12:
+        case 499:
+        case 500:
+        case 501:
+          assert_equals(count, cursor.key - 1, "count");
+          break;
+
+        // Delete the next key
+        case 510:
+          store.delete(511);
+          break;
+
+        // Delete randomly
+        case 512:
+          store.delete(611);
+          store.delete(499);
+          store.delete(500);
+          break;
+
+        // Delete and add a new key
+        case 520:
+          store.delete(521);
+          store.add({ key: 521, val: "new" });
+          break;
+
+        case 521:
+          assert_equals(cursor.value.val, "new");
+          break;
+
+        // We should only be here once although we're basically making the index
+        // "heavier" with its new key.
+        case 530:
+          assert_equals(cursor.value.val, "val_530");
+          cursor.update({ key: 530, val: "val_531" })
+
+          store.get(530).onsuccess = t.step_func(function (e) {
+            assert_equals(e.target.result.val, "val_531");
+          });
+          break;
+
+        // Shouldn't happen.
+        case 11:
+        case 511:
+        case 611:
+          assert_unreached(cursor.key + " should be deleted and never run");
+          break;
+      }
+
+      cursor.continue();
+      count++;
+    });
+  };
+}, "Iterate and Delete elements");
diff --git a/tests/wpt/tests/IndexedDB/idbcursor_iterating.htm b/tests/wpt/tests/IndexedDB/idbcursor_iterating.htm
deleted file mode 100644
index 4930d1eb1e9..00000000000
--- a/tests/wpt/tests/IndexedDB/idbcursor_iterating.htm
+++ /dev/null
@@ -1,109 +0,0 @@
-<!DOCTYPE html>
-<title>IDBCursor.continue() - objectstore - delete next element, and iterate to it</title>
-<link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="resources/support.js"></script>
-
-<script>
-    var db,
-      count = 0,
-      t = async_test();
-
-    var open_rq = createdb(t);
-    open_rq.onupgradeneeded = function(e) {
-        db = e.target.result;
-        t.add_cleanup(function() { db.close(); indexedDB.deleteDatabase(db.name); });
-        var objStore = db.createObjectStore("test", { keyPath: "key" });
-
-        for (var i = 0; i < 500; i++)
-            objStore.add({ key: i, val: "val_"+i });
-
-        var rq = objStore.add({ key: 500, val: "val_500" });
-
-        rq.onsuccess = t.step_func(function() {
-            for (var i = 999; i > 500; i--)
-                objStore.add({ key: i, val: "val_"+i });
-        });
-
-        objStore.createIndex('index', ['key', 'val']);
-    };
-
-    open_rq.onsuccess = function(e) {
-        var cursor_rq = db.transaction("test", "readwrite", {durability: 'relaxed'})
-                          .objectStore("test")
-                          .openCursor();
-
-        cursor_rq.onsuccess = t.step_func(function(e) {
-            var cursor = e.target.result,
-              store = e.target.source;
-            if (!cursor) {
-                assert_equals(count, 997, "cursor run count");
-
-                var rq = e.target.source.count();
-                rq.onsuccess = t.step_func(function(e) {
-                    assert_equals(e.target.result, 995, "object count");
-                    t.done();
-                });
-                return;
-            }
-
-            switch (cursor.key) {
-                case 10:
-                    assert_equals(count, cursor.key, "count");
-                    store.delete(11);
-                    break;
-
-                case 12:
-                case 499:
-                case 500:
-                case 501:
-                    assert_equals(count, cursor.key - 1, "count");
-                    break;
-
-                // Delete the next key
-                case 510:
-                    store.delete(511);
-                    break;
-
-                // Delete randomly
-                case 512:
-                    store.delete(611);
-                    store.delete(499);
-                    store.delete(500);
-                    break;
-
-                // Delete and add a new key
-                case 520:
-                    store.delete(521);
-                    store.add({ key: 521, val: "new"});
-                    break;
-
-                case 521:
-                    assert_equals(cursor.value.val, "new");
-                    break;
-
-                // We should only be here once although we're basically making the index
-                // "heavier" with its new key.
-                case 530:
-                    assert_equals(cursor.value.val, "val_530");
-                    cursor.update({ key: 530, val: "val_531" })
-
-                    store.get(530).onsuccess = t.step_func(function(e) {
-                        assert_equals(e.target.result.val, "val_531");
-                    });
-                    break;
-
-                // Shouldn't happen.
-                case 11:
-                case 511:
-                case 611:
-                    assert_unreached(cursor.key + " should be deleted and never run");
-                    break;
-            }
-
-            cursor.continue();
-            count++;
-        });
-    };
-</script>
diff --git a/tests/wpt/tests/IndexedDB/idbcursor_iterating_index.htm b/tests/wpt/tests/IndexedDB/idbcursor_iterating_index.htm
deleted file mode 100644
index be480a0815f..00000000000
--- a/tests/wpt/tests/IndexedDB/idbcursor_iterating_index.htm
+++ /dev/null
@@ -1,53 +0,0 @@
-<!DOCTYPE html>
-<title>IDBCursor.continue() - index - delete next element, and iterate to it</title>
-<link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="resources/support.js"></script>
-
-<script>
-    var db,
-      count = 0,
-      t = async_test(),
-      records = [ { pKey: "primaryKey_0", obj: { iKey: "iKey_0" }},
-                  { pKey: "primaryKey_1", obj: { iKey: "iKey_1" }},
-                  { pKey: "primaryKey_2", obj: { iKey: "iKey_2" }} ],
-
-      expected = [ [ "primaryKey_2", "iKey_2" ],
-                   [ "primaryKey_0", "iKey_0" ] ];
-
-    var open_rq = createdb(t);
-    open_rq.onupgradeneeded = function(e) {
-        db = e.target.result;
-        var objStore = db.createObjectStore("test", {keyPath:["pKey", "obj.iKey"]});
-        objStore.createIndex("index", [ "pKey", "obj.iKey" ]);
-
-        for (var i = 0; i < records.length; i++)
-            objStore.add(records[i]);
-    };
-
-    open_rq.onsuccess = function(e) {
-        var cursor_rq = db.transaction("test", "readwrite", {durability: 'relaxed'})
-                          .objectStore("test")
-                          .index("index")
-                          .openCursor(null, "prev");
-
-        cursor_rq.onsuccess = t.step_func(function(e) {
-            var cursor = e.target.result;
-            if (!cursor) {
-                assert_equals(count, 2, "cursor run count");
-                t.done();
-            }
-
-            if (count === 0) {
-                e.target.source.objectStore.delete(["primaryKey_1", "iKey_1"]);
-            }
-            assert_array_equals(cursor.key, expected[count], "primary key");
-
-            cursor.continue();
-            count++;
-        });
-    };
-</script>
-
-<div id="log"> </div>
diff --git a/tests/wpt/tests/IndexedDB/idbcursor_iterating_index2.htm b/tests/wpt/tests/IndexedDB/idbcursor_iterating_index2.htm
deleted file mode 100644
index d7af6afdc7e..00000000000
--- a/tests/wpt/tests/IndexedDB/idbcursor_iterating_index2.htm
+++ /dev/null
@@ -1,53 +0,0 @@
-<!DOCTYPE html>
-<title>IDBCursor.continue() - index - add next element, and iterate to it</title>
-<link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="resources/support.js"></script>
-
-<script>
-    var db,
-      count = 0,
-      t = async_test(),
-      records = [ { pKey: "primaryKey_0", obj: { iKey: "iKey_0" }},
-                  { pKey: "primaryKey_2", obj: { iKey: "iKey_2" }} ],
-
-      expected = [ [ "primaryKey_2", "iKey_2" ],
-                   [ "primaryKey_1", "iKey_1" ],
-                   [ "primaryKey_0", "iKey_0" ] ];
-
-    var open_rq = createdb(t);
-    open_rq.onupgradeneeded = function(e) {
-        db = e.target.result;
-        var objStore = db.createObjectStore("test", {keyPath:"pKey"});
-        objStore.createIndex("index", [ "pKey", "obj.iKey" ]);
-
-        for (var i = 0; i < records.length; i++)
-            objStore.add(records[i]);
-    };
-
-    open_rq.onsuccess = function(e) {
-        var cursor_rq = db.transaction("test", "readwrite", {durability: 'relaxed'})
-                          .objectStore("test")
-                          .index("index")
-                          .openCursor(null, "prev");
-
-        cursor_rq.onsuccess = t.step_func(function(e) {
-            var cursor = e.target.result;
-            if (!cursor) {
-                assert_equals(count, 3, "cursor run count");
-                t.done();
-            }
-
-            if (count === 0) {
-                e.target.source.objectStore.add({ pKey: "primaryKey_1", obj: { iKey: "iKey_1" } });
-            }
-            assert_array_equals(cursor.key, expected[count], "primary key");
-
-            cursor.continue();
-            count++;
-        });
-    };
-</script>
-
-<div id="log"> </div>
diff --git a/tests/wpt/tests/IndexedDB/idbcursor_iterating_objectstore.htm b/tests/wpt/tests/IndexedDB/idbcursor_iterating_objectstore.htm
deleted file mode 100644
index 12cec145703..00000000000
--- a/tests/wpt/tests/IndexedDB/idbcursor_iterating_objectstore.htm
+++ /dev/null
@@ -1,50 +0,0 @@
-<!DOCTYPE html>
-<title>IDBCursor.continue() - objectstore - delete next element, and iterate to it</title>
-<link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="resources/support.js"></script>
-
-<script>
-    var db,
-      count = 0,
-      t = async_test(),
-      records = [ { pKey: "primaryKey_0" },
-                  { pKey: "primaryKey_1" },
-                  { pKey: "primaryKey_2" } ],
-      expected_records = [ { pKey: "primaryKey_0" },
-                           { pKey: "primaryKey_2" }];
-
-    var open_rq = createdb(t);
-    open_rq.onupgradeneeded = function(e) {
-        db = e.target.result;
-        t.add_cleanup(function() { db.close(); indexedDB.deleteDatabase(db.name); });
-        var objStore = db.createObjectStore("test", {keyPath:"pKey"});
-
-        for (var i = 0; i < records.length; i++)
-            objStore.add(records[i]);
-    };
-
-    open_rq.onsuccess = function(e) {
-        var cursor_rq = db.transaction("test", "readwrite", {durability: 'relaxed'})
-                          .objectStore("test")
-                          .openCursor();
-
-        cursor_rq.onsuccess = t.step_func(function(e) {
-            var cursor = e.target.result;
-            if (!cursor) {
-                assert_equals(count, 2, "cursor run count");
-                t.done();
-            }
-
-            var record = cursor.value;
-            if (record.pKey == "primaryKey_0") {
-               e.target.source.delete("primaryKey_1");
-            }
-            assert_equals(record.pKey, expected_records[count].pKey, "primary key");
-
-            cursor.continue();
-            count++;
-        });
-    };
-</script>
diff --git a/tests/wpt/tests/IndexedDB/idbcursor_iterating_objectstore2.htm b/tests/wpt/tests/IndexedDB/idbcursor_iterating_objectstore2.htm
deleted file mode 100644
index 2bd9749edf0..00000000000
--- a/tests/wpt/tests/IndexedDB/idbcursor_iterating_objectstore2.htm
+++ /dev/null
@@ -1,50 +0,0 @@
-<!DOCTYPE html>
-<title>IDBCursor.continue() - objectstore - add next element, and iterate to it</title>
-<link rel="author" href="mailto:odinho@opera.com" title="Odin Hørthe Omdal">
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<script src="resources/support.js"></script>
-
-<script>
-    var db,
-      count = 0,
-      t = async_test(),
-      records = [ { pKey: "primaryKey_0" },
-                  { pKey: "primaryKey_2" } ],
-      expected_records = [ { pKey: "primaryKey_0" },
-                           { pKey: "primaryKey_1" },
-                           { pKey: "primaryKey_2" } ];
-
-    var open_rq = createdb(t);
-    open_rq.onupgradeneeded = function(e) {
-        db = e.target.result;
-        t.add_cleanup(function() { db.close(); indexedDB.deleteDatabase(db.name); });
-        var objStore = db.createObjectStore("test", {keyPath:"pKey"});
-
-        for (var i = 0; i < records.length; i++)
-            objStore.add(records[i]);
-    };
-
-    open_rq.onsuccess = function(e) {
-        var cursor_rq = db.transaction("test", "readwrite", {durability: 'relaxed'})
-                          .objectStore("test")
-                          .openCursor();
-
-        cursor_rq.onsuccess = t.step_func(function(e) {
-            var cursor = e.target.result;
-            if (!cursor) {
-                assert_equals(count, 3, "cursor run count");
-                t.done();
-            }
-
-            var record = cursor.value;
-            if (record.pKey == "primaryKey_0") {
-               e.target.source.add({ pKey: "primaryKey_1" });
-            }
-            assert_equals(record.pKey, expected_records[count].pKey, "primary key");
-
-            cursor.continue();
-            count++;
-        });
-    };
-</script>
diff --git a/tests/wpt/tests/WebCryptoAPI/generateKey/successes.js b/tests/wpt/tests/WebCryptoAPI/generateKey/successes.js
index e1c1665b511..a9a168e1adb 100644
--- a/tests/wpt/tests/WebCryptoAPI/generateKey/successes.js
+++ b/tests/wpt/tests/WebCryptoAPI/generateKey/successes.js
@@ -5,7 +5,8 @@ function run_test(algorithmNames, slowTest) {
     setup({explicit_timeout: true});
 
 // These tests check that generateKey successfully creates keys
-// when provided any of a wide set of correct parameters.
+// when provided any of a wide set of correct parameters
+// and that they can be exported afterwards.
 //
 // There are a lot of combinations of possible parameters,
 // resulting in a very large number of tests
@@ -68,9 +69,32 @@ function run_test(algorithmNames, slowTest) {
                 } else {
                     assert_goodCryptoKey(result, algorithm, extractable, usages, "secret");
                 }
+                return result;
             }, function(err) {
-                assert_unreached("Threw an unexpected error: " + err.toString());
-            });
+                assert_unreached("generateKey threw an unexpected error: " + err.toString());
+            })
+            .then(async function (result) {
+                if (resultType === "CryptoKeyPair") {
+                    await Promise.all([
+                        subtle.exportKey('jwk', result.publicKey),
+                        subtle.exportKey('spki', result.publicKey),
+                        result.publicKey.algorithm.name.startsWith('RSA') ? undefined : subtle.exportKey('raw', result.publicKey),
+                        ...(extractable ? [
+                            subtle.exportKey('jwk', result.privateKey),
+                            subtle.exportKey('pkcs8', result.privateKey),
+                        ] : [])
+                    ]);
+                } else {
+                    if (extractable) {
+                        await Promise.all([
+                            subtle.exportKey('raw', result),
+                            subtle.exportKey('jwk', result),
+                        ]);
+                    }
+                }
+            }, function(err) {
+                assert_unreached("exportKey threw an unexpected error: " + err.toString());
+            })
         }, testTag + ": generateKey" + parameterString(algorithm, extractable, usages));
     }
 
diff --git a/tests/wpt/tests/content-security-policy/img-src/css-filter-blocked.tentative.html b/tests/wpt/tests/content-security-policy/img-src/css-filter-blocked.tentative.html
new file mode 100644
index 00000000000..2c9c94063ce
--- /dev/null
+++ b/tests/wpt/tests/content-security-policy/img-src/css-filter-blocked.tentative.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta http-equiv="Content-Security-Policy" content="img-src 'none'">
+    <title>SVG in CSS filter: blocked as img</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script>
+      async_test(t => {
+        window.addEventListener('securitypolicyviolation',
+                                t.step_func_done(e => {
+          assert_equals(e.effectiveDirective, "img-src");
+          assert_true(e.blockedURI.endsWith("filter.svg"));
+        }));
+      }, "Blocked CSS filter: SVG");
+    </script>
+    <link rel="stylesheet" href="resources/blue.css">
+</head>
+<body>
+  <style>
+    body {
+      filter: url("filter.svg#bar");
+    }
+  </style>
+</body>
+</html>
diff --git a/tests/wpt/tests/content-security-policy/img-src/svg-use-blocked.tentative.html b/tests/wpt/tests/content-security-policy/img-src/svg-use-blocked.tentative.html
new file mode 100644
index 00000000000..2c548cf2198
--- /dev/null
+++ b/tests/wpt/tests/content-security-policy/img-src/svg-use-blocked.tentative.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta http-equiv="Content-Security-Policy" content="img-src 'none'">
+    <title>SVG use blocked as img</title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script>
+      async_test(t => {
+        window.addEventListener('securitypolicyviolation',
+                                t.step_func_done(e => {
+          assert_equals(e.effectiveDirective, "img-src");
+          assert_true(e.blockedURI.endsWith("use.svg"));
+        }));
+      }, "Blocked SVG <use> element");
+    </script>
+    <link rel="stylesheet" href="resources/blue.css">
+</head>
+<body>
+  <svg>
+    <use href="use.svg#bar"></use>
+  </svg>
+</body>
+</html>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/anchor-navigation-always-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/anchor-navigation-always-allowed.html
deleted file mode 100644
index 658897fb1be..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/anchor-navigation-always-allowed.html
+++ /dev/null
@@ -1,23 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-
-<a name="anchor"></a>
-
-<script>
-  var t = async_test("Test that anchor navigation is allowed regardless of the `navigate-to` directive");
-
-  window.addEventListener('securitypolicyviolation', t.unreached_func("Should not have triggered any violation"));
-
-  try {
-    window.location.hash = "anchor";
-    t.done();
-  } catch(ex) {}
-</script>
-
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/anchor-navigation-always-allowed.html.headers b/tests/wpt/tests/content-security-policy/navigate-to/anchor-navigation-always-allowed.html.headers
deleted file mode 100644
index 739a2ce1753..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/anchor-navigation-always-allowed.html.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: navigate-to 'none'
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-allowed.html
deleted file mode 100644
index 7b4b455d8d4..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-allowed.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child can navigate the parent because the relevant policy belongs to the navigation initiator (in this case the child, which has the policy `navigate-to 'self'`)");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-
-<iframe srcdoc="<iframe src='support/navigate_parent.sub.html?csp=navigate-to%20%27self%27'>">
-
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-allowed.html.headers b/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-allowed.html.headers
deleted file mode 100644
index aced1c6d058..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-allowed.html.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: navigate-to 'self' support/navigate_parent.sub.html
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-blocked.sub.html
deleted file mode 100644
index 4e50617e3c2..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-blocked.sub.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child can't navigate the parent because the relevant policy belongs to the navigation initiator (in this case the child which has the policy `navigate-to 'none'`)");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-<iframe srcdoc="<iframe src='support/navigate_parent.sub.html?csp=navigate-to%20%27none%27&report_id={{$id:uuid()}}'>"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27none%27&reportID={{$id}}'></script>
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-blocked.sub.html.headers b/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-blocked.sub.html.headers
deleted file mode 100644
index 9cb770bcc1b..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/child-navigates-parent-blocked.sub.html.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: navigate-to 'self'
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-allows-navigate-to-allows.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-allows-navigate-to-allows.sub.html
deleted file mode 100644
index f58407ac6de..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-allows-navigate-to-allows.sub.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that form-action overrides navigate-to when present.");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="../support/form_action_navigation.sub.html?csp=navigate-to%20%27self%27%3B%20form-action%20%27self%27%3B&action=post_message_to_frame_owner.html&report_id={{uuid()}}">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-allows-navigate-to-blocks.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-allows-navigate-to-blocks.sub.html
deleted file mode 100644
index 0ddc8820f94..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-allows-navigate-to-blocks.sub.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that form-action overrides navigate-to when present.");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="../support/form_action_navigation.sub.html?csp=navigate-to%20%27none%27%3B%20form-action%20%27self%27%3B&action=post_message_to_frame_owner.html&report_id={{uuid()}}">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-blocks-navigate-to-allows.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-blocks-navigate-to-allows.sub.html
deleted file mode 100644
index 927ebb4d361..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-blocks-navigate-to-allows.sub.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that form-action overrides navigate-to when present.");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'form-action');
-  });
-</script>
-<iframe src="../support/form_action_navigation.sub.html?csp=navigate-to%20%27self%27%3B%20form-action%20%27none%27%3B&action=post_message_to_frame_owner.html&report_id={{uuid()}}"">
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-blocks-navigate-to-blocks.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-blocks-navigate-to-blocks.sub.html
deleted file mode 100644
index 56688fa418b..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-action/form-action-blocks-navigate-to-blocks.sub.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that form-action overrides navigate-to when present.");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'form-action');
-  });
-</script>
-<iframe src="../support/form_action_navigation.sub.html?csp=navigate-to%20%27none%27%3B%20form-action%20%27none%27%3B&action=post_message_to_frame_owner.html&report_id={{uuid()}}">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/form-allowed.html
deleted file mode 100644
index aa38d898abd..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-allowed.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/form_action_navigation.sub.html?csp=navigate-to%20%27self%27&action=post_message_to_frame_owner.html"></iframe>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/form-blocked.sub.html
deleted file mode 100644
index 72db7b8d1d5..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-blocked.sub.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-<iframe src="support/form_action_navigation.sub.html?csp=navigate-to%20%27none%27&report_id={{$id:uuid()}}&action=post_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27none%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-cross-origin-allowed.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/form-cross-origin-allowed.sub.html
deleted file mode 100644
index 4d0ddc30f1a..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-cross-origin-allowed.sub.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/form_action_navigation.sub.html?csp=navigate-to%20http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}&action=http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html"></iframe>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-cross-origin-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/form-cross-origin-blocked.sub.html
deleted file mode 100644
index be5f70c8b1e..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-cross-origin-blocked.sub.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-<iframe src="support/form_action_navigation.sub.html?csp=navigate-to%20%27self%27&report_id={{$id:uuid()}}&action=http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-redirected-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/form-redirected-allowed.html
deleted file mode 100644
index 129b719c225..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-redirected-allowed.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/form_action_navigation.sub.html?csp=navigate-to%20%27self%27&action=redirect_to_post_message_to_frame_owner.py%3Flocation%3Dpost_message_to_frame_owner.html"></iframe>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/form-redirected-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/form-redirected-blocked.sub.html
deleted file mode 100644
index d60b8a7aa8d..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/form-redirected-blocked.sub.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-
-<iframe src="support/form_action_navigation.sub.html?csp=navigate-to%20%27self%27&report_id={{$id:uuid()}}&action=redirect_to_post_message_to_frame_owner.py%3Flocation%3Dhttp%3A%2F%2F{{domains[www1]}}%3A{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/href-location-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/href-location-allowed.html
deleted file mode 100644
index 16e11e0c659..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/href-location-allowed.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-
-  window.open("support/href_location_navigation.sub.html?csp=navigate-to%20%27self%27&target=post_message_to_frame_owner.html", "_blank");
-</script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/href-location-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/href-location-blocked.sub.html
deleted file mode 100644
index 721f055c715..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/href-location-blocked.sub.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-
-  window.open("support/href_location_navigation.sub.html?csp=navigate-to%20%27none%27&report_id={{$id:uuid()}}&target=post_message_to_frame_owner.html", "_blank");
-</script>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27none%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/href-location-cross-origin-allowed.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/href-location-cross-origin-allowed.sub.html
deleted file mode 100644
index a9396fc406c..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/href-location-cross-origin-allowed.sub.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-
-  window.open("support/href_location_navigation.sub.html?csp=navigate-to%20http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}&target=http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html", "_blank");
-</script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/href-location-cross-origin-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/href-location-cross-origin-blocked.sub.html
deleted file mode 100644
index cd0cd9106db..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/href-location-cross-origin-blocked.sub.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-
-  window.open("support/href_location_navigation.sub.html?csp=navigate-to%20%27self%27&report_id={{$id:uuid()}}&target=http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html", "_blank");
-</script>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/href-location-redirected-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/href-location-redirected-allowed.html
deleted file mode 100644
index 4dbfa7aef9d..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/href-location-redirected-allowed.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-
-  window.open("support/href_location_navigation.sub.html?csp=navigate-to%20%27self%27&target=redirect_to_post_message_to_frame_owner.py", "_blank");
-</script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/href-location-redirected-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/href-location-redirected-blocked.sub.html
deleted file mode 100644
index 5d8fafb3131..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/href-location-redirected-blocked.sub.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-
-  window.open("support/href_location_navigation.sub.html?csp=navigate-to%20%27self%27&report_id={{$id:uuid()}}&target=redirect_to_post_message_to_frame_owner.py%3Flocation%3Dhttp%3A%2F%2F{{domains[www1]}}%3A{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html", "_blank");
-</script>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/link-click-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/link-click-allowed.html
deleted file mode 100644
index 977b85dfb2c..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/link-click-allowed.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/link_click_navigation.sub.html?csp=navigate-to%20%27self%27&target=post_message_to_frame_owner.html">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/link-click-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/link-click-blocked.sub.html
deleted file mode 100644
index 29686fcaeff..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/link-click-blocked.sub.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-<iframe src="support/link_click_navigation.sub.html?csp=navigate-to%20%27none%27&report_id={{$id:uuid()}}&target=post_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/link-click-cross-origin-allowed.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/link-click-cross-origin-allowed.sub.html
deleted file mode 100644
index 4381bcb08d6..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/link-click-cross-origin-allowed.sub.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/link_click_navigation.sub.html?csp=navigate-to%20http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}&target=http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/link-click-cross-origin-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/link-click-cross-origin-blocked.sub.html
deleted file mode 100644
index f2b106c5773..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/link-click-cross-origin-blocked.sub.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-
-<iframe src="support/link_click_navigation.sub.html?csp=navigate-to%20%27self%27&report_id={{$id:uuid()}}&target=http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/link-click-redirected-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/link-click-redirected-allowed.html
deleted file mode 100644
index 87dea95b1dc..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/link-click-redirected-allowed.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/link_click_navigation.sub.html?csp=navigate-to%20%27self%27&target=redirect_to_post_message_to_frame_owner.py">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/link-click-redirected-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/link-click-redirected-blocked.sub.html
deleted file mode 100644
index 9b9205a526a..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/link-click-redirected-blocked.sub.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-<iframe src="support/link_click_navigation.sub.html?csp=navigate-to%20%27self%27&report_id={{$id:uuid()}}&target=redirect_to_post_message_to_frame_owner.py%3Flocation%3Dhttp%3A%2F%2F{{domains[www1]}}%3A{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-allowed.html
deleted file mode 100644
index eeaefc496e8..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-allowed.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/meta_refresh_navigation.sub.html?csp=navigate-to%20%27self%27&target=post_message_to_frame_owner.html">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-blocked.sub.html
deleted file mode 100644
index 1292c9ba5fc..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-blocked.sub.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-
-<iframe src="support/meta_refresh_navigation.sub.html?csp=navigate-to%20%27none%27&report_id={{$id:uuid()}}&target=post_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27none%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-cross-origin-allowed.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-cross-origin-allowed.sub.html
deleted file mode 100644
index 39e887eaadf..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-cross-origin-allowed.sub.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/meta_refresh_navigation.sub.html?csp=navigate-to%20http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}&target=http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-cross-origin-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-cross-origin-blocked.sub.html
deleted file mode 100644
index d7ccd336205..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-cross-origin-blocked.sub.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-
-<iframe src="support/meta_refresh_navigation.sub.html?csp=navigate-to%20%27self%27&report_id={{$id:uuid()}}&target=http%3A%2F%2F{{domains[www1]}}:{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-redirected-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-redirected-allowed.html
deleted file mode 100644
index de756bce8b5..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-redirected-allowed.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-</script>
-<iframe src="support/meta_refresh_navigation.sub.html?csp=navigate-to%20%27self%27&target=redirect_to_post_message_to_frame_owner.py">
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-redirected-blocked.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-redirected-blocked.sub.html
deleted file mode 100644
index 0734473ee63..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/meta-refresh-redirected-blocked.sub.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is not allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-</script>
-
-<iframe src="support/meta_refresh_navigation.sub.html?csp=navigate-to%20%27self%27&report_id={{$id:uuid()}}&target=redirect_to_post_message_to_frame_owner.py%3Flocation%3Dhttp%3A%2F%2F{{domains[www1]}}%3A{{ports[http][0]}}%2Fcontent-security-policy%2Fnavigate-to%2Fsupport%2Fpost_message_to_frame_owner.html"></iframe>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20%27self%27&reportID={{$id}}'></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-allowed.html b/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-allowed.html
deleted file mode 100644
index 47a661157c3..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-allowed.html
+++ /dev/null
@@ -1,26 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the parent can navigate the child because the relevant policy belongs to the navigation initiator (in this case the parent, which has the policy `navigate-to 'self'`)");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-  window.addEventListener('securitypolicyviolation', t.unreached_func("Should not have triggered a policy violation"));
-
-  var i = document.createElement('iframe');
-  var src_changed = false;
-  i.onload = function() {
-    if (src_changed) return;
-    src_changed = true;
-    i.src = "support/post_message_to_frame_owner.html";
-  }
-  i.src = "support/wait_for_navigation.html?csp=navigate-to%20%none%27";
-  document.body.appendChild(i);
-</script>
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-allowed.html.headers b/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-allowed.html.headers
deleted file mode 100644
index 9cb770bcc1b..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-allowed.html.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: navigate-to 'self'
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-blocked.html b/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-blocked.html
deleted file mode 100644
index c662da95fa1..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-blocked.html
+++ /dev/null
@@ -1,28 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the parent can't navigate the child because the relevant policy belongs to the navigation initiator (in this case the parent, which has the policy `navigate-to support/wait_for_navigation.html;`)");
-  window.onmessage = t.unreached_func("Should not have received a message as the navigation should not have been successful");
-  window.addEventListener('securitypolicyviolation', t.step_func_done(function(e) {
-    assert_equals(e.violatedDirective, 'navigate-to');
-  }));
-
-  var i = document.createElement('iframe');
-  var src_changed = false;
-  i.onload = function() {
-    if (src_changed) return;
-    src_changed = true;
-    i.src = "support/post_message_to_frame_owner.html";
-  }
-  i.src = "support/wait_for_navigation.html?csp=navigate-to%20%27self%27";
-  document.body.appendChild(i);
-</script>
-
-<script async defer src='../support/checkReport.sub.js?reportField=violated-directive&reportValue=navigate-to%20support%2Fwait_for_navigation.html'></script>
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-blocked.html.sub.headers b/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-blocked.html.sub.headers
deleted file mode 100644
index 36238fa78a6..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/parent-navigates-child-blocked.html.sub.headers
+++ /dev/null
@@ -1,5 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Set-Cookie: parent-navigates-child-blocked={{$id:uuid()}}; Path=/content-security-policy/navigate-to/
-Content-Security-Policy: navigate-to support/wait_for_navigation.html; report-uri /reporting/resources/report.py?op=put&reportID={{$id}}
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/spv-only-sent-to-initiator.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/spv-only-sent-to-initiator.sub.html
deleted file mode 100644
index a09057e7156..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/spv-only-sent-to-initiator.sub.html
+++ /dev/null
@@ -1,48 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-<body>
-<!-- This tests that a navigation initiator that has been replaced by the time
-     the navigation it initiates is blocked, will not receive the SPV event.
-
-     An iframe will navigate another iframe and the navigate itself.
-     The second iframe's navigation response will be delayed by the server but will
-     eventually be blocked by the CSP of the first iframe.
-     By the time this happens the first iframe should be an entirely different
-     document and it should not receive a SPV event -->
-<script>
-  var t = async_test("Test that no spv event is raised");
-  window.onmessage = t.step_func(function(e) {
-    if (e.data == "end_test") t.done();
-    else assert_unreached("Should not have raised a spv event");
-  });
-
-  var frames_loaded_count = 0;
-  var frame_loaded = function() {
-    if (++frames_loaded_count == 2) {
-      // both child frame have loaded we can start the
-      // test now, send a message to iframe1 so it knows to start
-      document.getElementById('iframe1').contentWindow.postMessage('start_test', '*');
-    }
-  }
-  var i1 = document.createElement('iframe');
-  i1.src = "support/spv-test-iframe1.sub.html?report_id={{$id:uuid()}}";
-  i1.id = "iframe1";
-  i1.name = "iframe1";
-  i1.onload = frame_loaded;
-  document.body.appendChild(i1);
-
-  var i2 = document.createElement('iframe');
-  i2.src = "support/spv-test-iframe2.sub.html";
-  i2.id = "iframe2";
-  i2.name = "iframe2";
-  i2.onload = frame_loaded;
-  document.body.appendChild(i2);
-</script>
-
-<script async defer src='../support/checkReport.sub.js?reportExists=false&reportID={{$id}}'></script>
-
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/delayed_frame.py b/tests/wpt/tests/content-security-policy/navigate-to/support/delayed_frame.py
deleted file mode 100644
index 06bcb9b680c..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/delayed_frame.py
+++ /dev/null
@@ -1,12 +0,0 @@
-import time
-def main(request, response):
-    time.sleep(1)
-    headers = [(b"Content-Type", b"text/html")]
-    return headers, u'''
-<!DOCTYPE html>
-<head>
-</head>
-<body>
-    DELAYED FRAME
-</body
-'''
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/form_action_navigation.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/support/form_action_navigation.sub.html
deleted file mode 100644
index a4121944eaf..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/form_action_navigation.sub.html
+++ /dev/null
@@ -1,33 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-
-  <script>
-    window.addEventListener('securitypolicyviolation', function(e) {
-      top.postMessage({result: 'fail', violatedDirective: e.violatedDirective}, '*');
-    });
-  </script>
-</head>
-
-<body>
-<form action='{{GET[action]}}' target='_self' id='form'>
-  <input type="text" name="dummy">
-  <div id="form-div"></div>
-</form>
-
-<script>
- try {
-  url = new URL("{{GET[action]}}", location.href);
-  for (var p of url.searchParams) {
-    var elem = document.createElement('input');
-    elem.type = 'text';
-    elem.name = p[0];
-    elem.value = p[1];
-    document.getElementById('form-div').appendChild(elem);
-  }
- } catch(ex) {}
-
- document.getElementById('form').submit();
-</script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/form_action_navigation.sub.html.sub.headers b/tests/wpt/tests/content-security-policy/navigate-to/support/form_action_navigation.sub.html.sub.headers
deleted file mode 100644
index a42cfe2d958..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/form_action_navigation.sub.html.sub.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: {{GET[csp]}}; report-uri /reporting/resources/report.py?op=put&reportID={{GET[report_id]}}
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/href_location_navigation.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/support/href_location_navigation.sub.html
deleted file mode 100644
index 15b1365cc21..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/href_location_navigation.sub.html
+++ /dev/null
@@ -1,17 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  window.addEventListener('securitypolicyviolation', function(e) {
-    opener.postMessage({result: 'fail', violatedDirective: e.violatedDirective}, '*');
-  });
-
-  try {
-    location.href = "{{GET[target]}}";
-  } catch(ex) {}
-</script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/href_location_navigation.sub.html.sub.headers b/tests/wpt/tests/content-security-policy/navigate-to/support/href_location_navigation.sub.html.sub.headers
deleted file mode 100644
index a42cfe2d958..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/href_location_navigation.sub.html.sub.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: {{GET[csp]}}; report-uri /reporting/resources/report.py?op=put&reportID={{GET[report_id]}}
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/link_click_navigation.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/support/link_click_navigation.sub.html
deleted file mode 100644
index 2434271211f..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/link_click_navigation.sub.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<a href="{{GET[target]}}" id="link">dummy link</a>
-<script>
-  window.addEventListener('securitypolicyviolation', function(e) {
-    top.postMessage({result: 'fail', violatedDirective: e.violatedDirective}, '*');
-  });
-
-  document.getElementById('link').click();
-</script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/link_click_navigation.sub.html.sub.headers b/tests/wpt/tests/content-security-policy/navigate-to/support/link_click_navigation.sub.html.sub.headers
deleted file mode 100644
index a42cfe2d958..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/link_click_navigation.sub.html.sub.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: {{GET[csp]}}; report-uri /reporting/resources/report.py?op=put&reportID={{GET[report_id]}}
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/meta_refresh_navigation.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/support/meta_refresh_navigation.sub.html
deleted file mode 100644
index 64bae27fed6..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/meta_refresh_navigation.sub.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-
-  <script>
-    window.addEventListener('securitypolicyviolation', function(e) {
-      top.postMessage({result: 'fail', violatedDirective: e.violatedDirective}, '*');
-    });
-  </script>
-
-  <meta http-equiv="refresh" content="0; url={{GET[target]}}">
-</head>
-
-<body>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/meta_refresh_navigation.sub.html.sub.headers b/tests/wpt/tests/content-security-policy/navigate-to/support/meta_refresh_navigation.sub.html.sub.headers
deleted file mode 100644
index a42cfe2d958..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/meta_refresh_navigation.sub.html.sub.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: {{GET[csp]}}; report-uri /reporting/resources/report.py?op=put&reportID={{GET[report_id]}}
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/navigate_parent.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/support/navigate_parent.sub.html
deleted file mode 100644
index a84c9c64ca9..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/navigate_parent.sub.html
+++ /dev/null
@@ -1,18 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-
-  <script>
-    window.addEventListener('securitypolicyviolation', function(e) {
-      top.postMessage({result: 'fail', violatedDirective: e.violatedDirective}, '*');
-    });
-  </script>
-</head>
-
-<body>
-<a href="post_message_to_frame_owner.html" id="link" target="_parent">dummy link</a>
-<script>
-  document.getElementById('link').click();
-</script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/navigate_parent.sub.html.sub.headers b/tests/wpt/tests/content-security-policy/navigate-to/support/navigate_parent.sub.html.sub.headers
deleted file mode 100644
index a42cfe2d958..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/navigate_parent.sub.html.sub.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: {{GET[csp]}}; report-uri /reporting/resources/report.py?op=put&reportID={{GET[report_id]}}
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/post_message_to_frame_owner.html b/tests/wpt/tests/content-security-policy/navigate-to/support/post_message_to_frame_owner.html
deleted file mode 100644
index c25e49d1466..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/post_message_to_frame_owner.html
+++ /dev/null
@@ -1,6 +0,0 @@
-<script>
-  if (window.opener)
-    window.opener.postMessage({result: 'success'}, '*');
-  else
-    top.postMessage({result: 'success'}, '*');
-</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/redirect_to_post_message_to_frame_owner.py b/tests/wpt/tests/content-security-policy/navigate-to/support/redirect_to_post_message_to_frame_owner.py
deleted file mode 100644
index 0f6f6eca7b0..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/redirect_to_post_message_to_frame_owner.py
+++ /dev/null
@@ -1,6 +0,0 @@
-def main(request, response):
-    response.status = 302
-    if b"location" in request.GET:
-        response.headers.set(b"Location", request.GET[b"location"])
-    else:
-        response.headers.set(b"Location", b"post_message_to_frame_owner.html")
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe1.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe1.sub.html
deleted file mode 100644
index 9e26c02be31..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe1.sub.html
+++ /dev/null
@@ -1,19 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <script>
-    window.onmessage = function(e) {
-      if (e.data == "start_test") {
-        document.getElementById('link').click();
-        location.href = "{{location[server]}}/content-security-policy/navigate-to/support/spv-test-iframe3.sub.html";
-      }
-    }
-    window.addEventListener('securitypolicyviolation', function(e) {
-      top.postMessage({iframe: 'iframe1', violatedDirective: e.violatedDirective}, '*');
-    });
-  </script>
-</head>
-
-<body>
-  <a href="{{location[server]}}/content-security-policy/navigate-to/support/delayed_frame.py" id="link" target="iframe2">dummy link</a>
-  IFRAME 1
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe1.sub.html.sub.headers b/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe1.sub.html.sub.headers
deleted file mode 100644
index 9d83b92d96c..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe1.sub.html.sub.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: navigate-to {{location[server]}}/content-security-policy/navigate-to/support/spv-test-iframe3.sub.html 'unsafe-allow-redirects'; report-uri /reporting/resources/report.py?op=put&reportID={{GET[report_id]}}
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe2.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe2.sub.html
deleted file mode 100644
index 1329683c88b..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe2.sub.html
+++ /dev/null
@@ -1,14 +0,0 @@
-<!DOCTYPE html>
-<head>
-</head>
-<body>
-  <script>
-    window.addEventListener('securitypolicyviolation', function(e) {
-      top.postMessage({iframe: 'iframe1', violatedDirective: e.violatedDirective}, '*');
-    });
-    setTimeout(function() {
-      top.postMessage("end_test", "*");
-    }, 4000);
-  </script>
-  IFRAME 2
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe3.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe3.sub.html
deleted file mode 100644
index 09dbf6863dc..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/spv-test-iframe3.sub.html
+++ /dev/null
@@ -1,12 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <script>
-    window.addEventListener('securitypolicyviolation', function(e) {
-      top.postMessage({iframe: 'iframe3', violatedDirective: e.violatedDirective}, '*');
-    });
-  </script>
-</head>
-
-<body>
-  IFRAME 3
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/wait_for_navigation.html b/tests/wpt/tests/content-security-policy/navigate-to/support/wait_for_navigation.html
deleted file mode 100644
index 2450ff1c0aa..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/wait_for_navigation.html
+++ /dev/null
@@ -1,14 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <script src="/resources/testharness.js"></script>
-  <script src="/resources/testharnessreport.js"></script>
-
-  <script>
-    window.addEventListener('securitypolicyviolation', function(e) {
-      top.postMessage({result: 'fail', violatedDirective: e.violatedDirective}, '*');
-    });
-  </script>
-</head>
-
-<body>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/support/wait_for_navigation.html.sub.headers b/tests/wpt/tests/content-security-policy/navigate-to/support/wait_for_navigation.html.sub.headers
deleted file mode 100644
index d3c635b9a06..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/support/wait_for_navigation.html.sub.headers
+++ /dev/null
@@ -1,4 +0,0 @@
-Expires: Mon, 26 Jul 1997 05:00:00 GMT
-Cache-Control: no-store, no-cache, must-revalidate
-Pragma: no-cache
-Content-Security-Policy: {{GET[csp]}}
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/allowed-end-of-chain-because-of-same-origin.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/allowed-end-of-chain-because-of-same-origin.sub.html
deleted file mode 100644
index 192477296b6..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/allowed-end-of-chain-because-of-same-origin.sub.html
+++ /dev/null
@@ -1,29 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-
-  // the iframe will navigate to:
-  //    [www2]/..../redirect.py (which is not in the navigate-to source list) which will in turn navigate to
-  //    [www1]/..../post_message_to_frame_owner.html which is not exactly in
-  // the list but the check should be reduced to an origin check since there has been a redirect.
-  // Because of 'unsafe-allow-redirects' only the second one is checked since the first is a redirect
-
-  var i = document.createElement('iframe');
-  i.src = "../support/link_click_navigation.sub.html" +
-    "?csp=" + encodeURIComponent("navigate-to {{location[scheme]}}://{{domains[www1]}}:{{location[port]}}/some-path/ 'unsafe-allow-redirects'") +
-    "&target=" + encodeURIComponent("{{location[scheme]}}://{{domains[www2]}}:{{location[port]}}/common/redirect.py?location=" +
-                                     encodeURIComponent("{{location[scheme]}}://{{domains[www1]}}:{{location[port]}}/content-security-policy/navigate-to/support/post_message_to_frame_owner.html"));
-  document.body.appendChild(i);
-</script>
-
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/allowed-end-of-chain.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/allowed-end-of-chain.sub.html
deleted file mode 100644
index 74fe8f2e7a6..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/allowed-end-of-chain.sub.html
+++ /dev/null
@@ -1,28 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is allowed");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'success');
-  });
-
-  // the iframe will navigate to:
-  //    [www2]/..../redirect.py (which is not in the navigate-to source list) which will in turn navigate to
-  //    [www1]/..../post_message_to_frame_owner.html which is in the list
-  // because of 'unsafe-allow-redirects' only the second one is checked since the first is a redirect
-
-  var i = document.createElement('iframe');
-  i.src = "../support/link_click_navigation.sub.html" +
-    "?csp=" + encodeURIComponent("navigate-to {{location[scheme]}}://{{domains[www1]}}:{{location[port]}} 'unsafe-allow-redirects'") +
-    "&target=" + encodeURIComponent("{{location[scheme]}}://{{domains[www2]}}:{{location[port]}}/common/redirect.py?location=" +
-                                     encodeURIComponent("{{location[scheme]}}://{{domains[www1]}}:{{location[port]}}/content-security-policy/navigate-to/support/post_message_to_frame_owner.html"));
-  document.body.appendChild(i);
-</script>
-
-</body>
diff --git a/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/blocked-end-of-chain.sub.html b/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/blocked-end-of-chain.sub.html
deleted file mode 100644
index 86e54b3d937..00000000000
--- a/tests/wpt/tests/content-security-policy/navigate-to/unsafe-allow-redirects/blocked-end-of-chain.sub.html
+++ /dev/null
@@ -1,29 +0,0 @@
-<!DOCTYPE html>
-
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-
-<body>
-<script>
-  var t = async_test("Test that the child iframe navigation is blocked");
-  window.onmessage = t.step_func_done(function(e) {
-    assert_equals(e.data.result, 'fail');
-    assert_equals(e.data.violatedDirective, 'navigate-to');
-  });
-
-  // the iframe will navigate to:
-  //    [www2]/..../redirect.py (which is not in the navigate-to source list) which will in turn navigate to
-  //    [www2]/..../post_message_to_frame_owner.html which is also not in the list
-  // because of 'unsafe-allow-redirects' only the second one is checked since the first is a redirect
-
-  var i = document.createElement('iframe');
-  i.src = "../support/link_click_navigation.sub.html" +
-    "?csp=" + encodeURIComponent("navigate-to {{location[scheme]}}://{{domains[www1]}}:{{location[port]}} 'unsafe-allow-redirects'") +
-    "&target=" + encodeURIComponent("{{location[scheme]}}://{{domains[www2]}}:{{location[port]}}/common/redirect.py?location=" +
-                                     encodeURIComponent("{{location[scheme]}}://{{domains[www2]}}:{{location[port]}}/content-security-policy/navigate-to/support/post_message_to_frame_owner.html"));
-  document.body.appendChild(i);
-</script>
-
-</body>
diff --git a/tests/wpt/tests/cookie-store/cookieStore_getAll_arguments.https.any.js b/tests/wpt/tests/cookie-store/cookieStore_getAll_arguments.https.any.js
index 5055a42e5d3..264b6b7a7f7 100644
--- a/tests/wpt/tests/cookie-store/cookieStore_getAll_arguments.https.any.js
+++ b/tests/wpt/tests/cookie-store/cookieStore_getAll_arguments.https.any.js
@@ -147,3 +147,39 @@ promise_test(async testCase => {
   await promise_rejects_js(testCase, TypeError, cookieStore.getAll(
       { url: invalid_url }));
 }, 'cookieStore.getAll with invalid url host in options');
+
+promise_test(async testCase => {
+  await cookieStore.set('cookie-name', 'cookie-value');
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+
+  let target_url = self.location.href;
+  if (self.GLOBAL.isWorker()) {
+    target_url = target_url + '/path/within/scope';
+  }
+
+  target_url = target_url + "#foo";
+
+  const cookies = await cookieStore.getAll({ url: target_url });
+  assert_equals(cookies.length, 1);
+  assert_equals(cookies[0].name, 'cookie-name');
+  assert_equals(cookies[0].value, 'cookie-value');
+}, 'cookieStore.getAll with absolute url with fragment in options');
+
+promise_test(async testCase => {
+  if (!self.GLOBAL.isWorker()) {
+    await cookieStore.set('cookie-name', 'cookie-value');
+    testCase.add_cleanup(async () => {
+      await cookieStore.delete('cookie-name');
+    });
+
+    self.location = "#foo";
+    let target_url = self.location.href;
+
+    const cookies = await cookieStore.getAll({ url: target_url });
+    assert_equals(cookies.length, 1);
+    assert_equals(cookies[0].name, 'cookie-name');
+    assert_equals(cookies[0].value, 'cookie-value');
+  }
+}, 'cookieStore.getAll with absolute different url in options');
diff --git a/tests/wpt/tests/cookie-store/cookieStore_get_arguments.https.any.js b/tests/wpt/tests/cookie-store/cookieStore_get_arguments.https.any.js
index a56032f03e2..8507682f8ec 100644
--- a/tests/wpt/tests/cookie-store/cookieStore_get_arguments.https.any.js
+++ b/tests/wpt/tests/cookie-store/cookieStore_get_arguments.https.any.js
@@ -100,3 +100,37 @@ promise_test(async testCase => {
   await promise_rejects_js(testCase, TypeError, cookieStore.get(
       { url: invalid_url }));
 }, 'cookieStore.get with invalid url host in options');
+
+promise_test(async testCase => {
+  await cookieStore.set('cookie-name', 'cookie-value');
+  testCase.add_cleanup(async () => {
+    await cookieStore.delete('cookie-name');
+  });
+
+  let target_url = self.location.href;
+  if (self.GLOBAL.isWorker()) {
+    target_url = target_url + '/path/within/scope';
+  }
+
+  target_url = target_url + "#foo";
+
+  const cookie = await cookieStore.get({ url: target_url });
+  assert_equals(cookie.name, 'cookie-name');
+  assert_equals(cookie.value, 'cookie-value');
+}, 'cookieStore.get with absolute url with fragment in options');
+
+promise_test(async testCase => {
+  if (!self.GLOBAL.isWorker()) {
+    await cookieStore.set('cookie-name', 'cookie-value');
+    testCase.add_cleanup(async () => {
+      await cookieStore.delete('cookie-name');
+    });
+
+    self.location = "#foo";
+    let target_url = self.location.href;
+
+    const cookie = await cookieStore.get({ url: target_url });
+    assert_equals(cookie.name, 'cookie-name');
+    assert_equals(cookie.value, 'cookie-value');
+  }
+}, 'cookieStore.get with absolute different url in options');
diff --git a/tests/wpt/tests/cookie-store/cookieStore_get_set_creation_url.sub.https.html b/tests/wpt/tests/cookie-store/cookieStore_get_set_creation_url.sub.https.html
new file mode 100644
index 00000000000..216885298a5
--- /dev/null
+++ b/tests/wpt/tests/cookie-store/cookieStore_get_set_creation_url.sub.https.html
@@ -0,0 +1,86 @@
+<!doctype html>
+<meta charset='utf-8'>
+<title>Async Cookies: cookieStore basic API on creation URL with fragments</title>
+<link rel='help' href='https://github.com/WICG/cookie-store'>
+<link rel='author' href='baku@mozilla.com' title='Andrea Marchesini'>
+<script src='/resources/testharness.js'></script>
+<script src='/resources/testharnessreport.js'></script>
+<script src='resources/helpers.js'></script>
+<style>iframe { display: none; }</style>
+
+<script>
+'use strict';
+
+const kUrl = '/cookie-store/resources/helper_iframe.sub.html';
+
+promise_test(async t => {
+  const url = new URL(kUrl, location);
+
+  const iframe = await createIframe(url + "#fragment", t);
+  assert_true(iframe != null);
+
+  iframe.contentWindow.postMessage({
+    opname: 'set-cookie',
+    name: 'cookie-name',
+    value: 'cookie-value',
+  }, '*');
+
+  t.add_cleanup(async () => {
+    await cookieStore.delete({ name: 'cookie-name', domain: '{{host}}' });
+  });
+
+  await waitForMessage();
+
+  iframe.contentWindow.postMessage({
+    opname: 'get-cookie',
+    name: 'cookie-name',
+    options: { url: url.href }
+  }, '*');
+
+  const message = await waitForMessage();
+
+  const { frameCookie } = message;
+  assert_not_equals(frameCookie, null);
+  assert_equals(frameCookie.name, 'cookie-name');
+  assert_equals(frameCookie.value, 'cookie-value');
+}, 'cookieStore.get() option url ignores fragments');
+
+promise_test(async t => {
+  const url = new URL(kUrl, location);
+
+  const iframe = await createIframe(url + "#fragment", t);
+  assert_true(iframe != null);
+
+  iframe.contentWindow.postMessage({
+    opname: 'set-cookie',
+    name: 'cookie-name',
+    value: 'cookie-value',
+  }, '*');
+
+  t.add_cleanup(async () => {
+    await cookieStore.delete({ name: 'cookie-name', domain: '{{host}}' });
+  });
+
+  await waitForMessage();
+
+  iframe.contentWindow.postMessage({
+    opname: 'push-state',
+  }, '*');
+
+  await waitForMessage();
+
+  iframe.contentWindow.postMessage({
+    opname: 'get-cookie',
+    name: 'cookie-name',
+    options: { url: url.href }
+  }, '*');
+
+  const message = await waitForMessage();
+
+  const { frameCookie } = message;
+  assert_not_equals(frameCookie, null);
+  assert_equals(frameCookie.name, 'cookie-name');
+  assert_equals(frameCookie.value, 'cookie-value');
+}, 'cookieStore.get() option url + pushState()');
+
+</script>
diff --git a/tests/wpt/tests/cookie-store/resources/helper_iframe.sub.html b/tests/wpt/tests/cookie-store/resources/helper_iframe.sub.html
index 9017eace44d..750f19b56d3 100644
--- a/tests/wpt/tests/cookie-store/resources/helper_iframe.sub.html
+++ b/tests/wpt/tests/cookie-store/resources/helper_iframe.sub.html
@@ -23,9 +23,12 @@
       });
       event.source.postMessage('Cookie has been set', event.origin);
     } else if (opname === 'get-cookie') {
-      const { name } = event.data
-      const frameCookie = await cookieStore.get(name);
+      const { name, options } = event.data
+      const frameCookie = await cookieStore.get(name, options);
       event.source.postMessage({frameCookie}, event.origin);
+    } else if (opname === 'push-state') {
+      history.pushState("foo", null, "some/path");
+      event.source.postMessage('pushState called');
     }
   });
 </script>
diff --git a/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html
new file mode 100644
index 00000000000..3e5bc482a5d
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-ltr-htb.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  align-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html
new file mode 100644
index 00000000000..7144bb1513c
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-ltr-vrl.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  align-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html
new file mode 100644
index 00000000000..c041d8efa9a
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-rtl-htb.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: horizontal-tb;
+  direction: rtl;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  align-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html
new file mode 100644
index 00000000000..0174fd0a51b
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-htb-rtl-vrl.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: horizontal-tb;
+  direction: rtl;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  align-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html
new file mode 100644
index 00000000000..a9a641397ff
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-ltr-htb.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  align-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html
new file mode 100644
index 00000000000..e3be64a87ab
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-ltr-vrl.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  align-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html
new file mode 100644
index 00000000000..9c1b779265d
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-rtl-htb.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: vertical-rl;
+  direction: rtl;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  align-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html
new file mode 100644
index 00000000000..eaebcf03acb
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/align-self-default-overflow-vrl-rtl-vrl.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: vertical-rl;
+  direction: rtl;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  align-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html
new file mode 100644
index 00000000000..753001068ea
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-ltr-htb.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  justify-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: 20px; right: 10px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="left: 20px; right: 10px;" data-offset-x="15">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 20px; right: 10px;" data-offset-x="5">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 20px; right: 10px;" data-offset-x="0">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -20px; right: -10px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -20px; right: -10px;" data-offset-x="-15">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: -20px; right: -10px;" data-offset-x="-20">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: 20px; right: 10px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="left: 20px; right: 10px;" data-offset-x="15">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 20px; right: 10px;" data-offset-x="5">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 20px; right: 10px;" data-offset-x="0">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -20px; right: -10px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -20px; right: -10px;" data-offset-x="-15">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: -20px; right: -10px;" data-offset-x="-20">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html
new file mode 100644
index 00000000000..26bba3ea307
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-ltr-vrl.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  justify-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: 20px; right: 10px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="left: 20px; right: 10px;" data-offset-x="15">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 20px; right: 10px;" data-offset-x="5">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 20px; right: 10px;" data-offset-x="0">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -20px; right: -10px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -20px; right: -10px;" data-offset-x="-15">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: -20px; right: -10px;" data-offset-x="-20">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: 20px; right: 10px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="left: 20px; right: 10px;" data-offset-x="15">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 20px; right: 10px;" data-offset-x="5">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 20px; right: 10px;" data-offset-x="0">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -20px; right: -10px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -20px; right: -10px;" data-offset-x="-15">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: -20px; right: -10px;" data-offset-x="-20">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html
new file mode 100644
index 00000000000..f3b46447e6f
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-rtl-htb.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: horizontal-tb;
+  direction: rtl;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  justify-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html
new file mode 100644
index 00000000000..adf9b305cd2
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-htb-rtl-vrl.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: horizontal-tb;
+  direction: rtl;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  justify-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="5">
+    <div class="inner" style="width: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="0">
+    <div class="inner" style="width: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: 10px; right: 20px;" data-offset-x="-20">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-5">
+    <div class="inner" style="width: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="left: -10px; right: -20px;" data-offset-x="-40">
+    <div class="inner" style="width: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html
new file mode 100644
index 00000000000..cc53c9759e0
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-htb.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  justify-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html
new file mode 100644
index 00000000000..92fa8002dd2
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-ltr-vrl.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  justify-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="15">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="5">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 20px; bottom: 10px;" data-offset-y="0">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-15">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: -20px; bottom: -10px;" data-offset-y="-20">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html
new file mode 100644
index 00000000000..6c117f3240d
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-htb.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: vertical-rl;
+  direction: rtl;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: horizontal-tb;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  justify-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: 10px; bottom: 20px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="top: 10px; bottom: 20px;" data-offset-y="5">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 10px; bottom: 20px;" data-offset-y="0">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 10px; bottom: 20px;" data-offset-y="-20">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -10px; bottom: -20px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -10px; bottom: -20px;" data-offset-y="-5">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: -10px; bottom: -20px;" data-offset-y="-40">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: 10px; bottom: 20px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="top: 10px; bottom: 20px;" data-offset-y="5">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 10px; bottom: 20px;" data-offset-y="0">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 10px; bottom: 20px;" data-offset-y="-20">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -10px; bottom: -20px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -10px; bottom: -20px;" data-offset-y="-5">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: -10px; bottom: -20px;" data-offset-y="-40">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html
new file mode 100644
index 00000000000..ea1f8cc9ebe
--- /dev/null
+++ b/tests/wpt/tests/css/css-align/abspos/justify-self-default-overflow-vrl-rtl-vrl.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
+<style>
+body {
+  margin: 0;
+}
+
+.container {
+  writing-mode: vertical-rl;
+  direction: rtl;
+  display: inline-block;
+  position: relative;
+  margin: 20px;
+  border: solid 4px;
+  width: 100px;
+  height: 100px;
+}
+
+.item {
+  writing-mode: vertical-rl;
+  direction: ltr;
+  position: absolute;
+  background: green;
+  justify-self: center;
+}
+
+.inner {
+  width: 20px;
+  height: 20px;
+}
+
+.rtl {
+  direction: rtl;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+
+<body onload="checkLayout('.item')">
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: 10px; bottom: 20px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item" style="top: 10px; bottom: 20px;" data-offset-y="5">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 10px; bottom: 20px;" data-offset-y="0">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: 10px; bottom: 20px;" data-offset-y="-20">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -10px; bottom: -20px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item" style="top: -10px; bottom: -20px;" data-offset-y="-5">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item" style="top: -10px; bottom: -20px;" data-offset-y="-40">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
+
+<!-- RTL items. -->
+<br>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: 10px; bottom: 20px;" data-offset-y="35">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- Overflows IMCB, but not CB. -->
+<div class="container">
+  <div class="item rtl" style="top: 10px; bottom: 20px;" data-offset-y="5">
+    <div class="inner" style="height: 80px;"></div>
+  </div>
+</div>
+
+<!-- Overflows weak CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 10px; bottom: 20px;" data-offset-y="0">
+    <div class="inner" style="height: 95px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: 10px; bottom: 20px;" data-offset-y="-20">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -10px; bottom: -20px;" data-offset-y="45">
+    <div class="inner"></div>
+  </div>
+</div>
+
+<!-- No overflow, centered in IMCB. -->
+<div class="container">
+  <div class="item rtl" style="top: -10px; bottom: -20px;" data-offset-y="-5">
+    <div class="inner" style="height: 120px;"></div>
+  </div>
+</div>
+
+<!-- Overflows strong CB edge, shifted. -->
+<div class="container">
+  <div class="item rtl" style="top: -10px; bottom: -20px;" data-offset-y="-40">
+    <div class="inner" style="height: 160px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-center-htb-htb.html b/tests/wpt/tests/css/css-anchor-position/anchor-center-htb-htb.html
index 20abb2ed096..50fc0906107 100644
--- a/tests/wpt/tests/css/css-anchor-position/anchor-center-htb-htb.html
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-center-htb-htb.html
@@ -43,34 +43,44 @@
 <!-- no insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" data-expected-width="70" data-offset-x="30"></div>
+  <div class="target" data-expected-width="100" data-offset-x="0"></div>
+</div>
+
+<div class="container">
+  <div class="anchor"></div>
+  <div class="target" style="max-width: 60px;" data-expected-width="60" data-offset-x="35"></div>
 </div>
 
 <!-- single insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="left: 20px;" data-expected-width="70" data-offset-x="30"></div>
+  <div class="target" style="left: 20px;" data-expected-width="80" data-offset-x="20"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="right: 20px;" data-expected-width="30" data-offset-x="50"></div>
+  <div class="target" style="right: 20px;" data-expected-width="80" data-offset-x="20"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="right: -20px;" data-expected-width="110" data-offset-x="10"></div>
+  <div class="target" style="right: -20px;" data-expected-width="120" data-offset-x="0"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="right: -100px;" data-expected-width="130" data-offset-x="0"></div>
+  <div class="target" style="max-width: 100px; right: -20px;" data-expected-width="100" data-offset-x="15"></div>
+</div>
+
+<div class="container">
+  <div class="anchor"></div>
+  <div class="target" style="right: -50px;" data-expected-width="150" data-offset-x="0"></div>
 </div>
 
 <!-- both insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="left: 10px; right: 20px;" data-expected-width="30" data-offset-x="50"></div>
+  <div class="target" style="left: 10px; right: 20px;" data-expected-width="70" data-offset-x="30"></div>
 </div>
 
 <div class="container">
@@ -80,5 +90,5 @@
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="left: -10px; right: -50px;" data-expected-width="150" data-offset-x="-10"></div>
+  <div class="target" style="left: -10px; right: -50px;" data-expected-width="160" data-offset-x="-10"></div>
 </div>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-center-htb-vrl.html b/tests/wpt/tests/css/css-anchor-position/anchor-center-htb-vrl.html
index 099d9cd15b4..eba72d64913 100644
--- a/tests/wpt/tests/css/css-anchor-position/anchor-center-htb-vrl.html
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-center-htb-vrl.html
@@ -44,34 +44,44 @@
 <!-- no insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" data-expected-height="70" data-offset-y="30"></div>
+  <div class="target" data-expected-height="100" data-offset-y="0"></div>
+</div>
+
+<div class="container">
+  <div class="anchor"></div>
+  <div class="target" style="max-height: 60px;" data-expected-height="60" data-offset-y="35"></div>
 </div>
 
 <!-- single insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="top: 20px;" data-expected-height="70" data-offset-y="30"></div>
+  <div class="target" style="top: 20px;" data-expected-height="80" data-offset-y="20"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="bottom: 20px;" data-expected-height="30" data-offset-y="50"></div>
+  <div class="target" style="bottom: 20px;" data-expected-height="80" data-offset-y="20"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="bottom: -20px;" data-expected-height="110" data-offset-y="10"></div>
+  <div class="target" style="bottom: -20px;" data-expected-height="120" data-offset-y="0"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="bottom: -100px;" data-expected-height="130" data-offset-y="0"></div>
+  <div class="target" style="max-height: 100px; bottom: -20px;" data-expected-height="100" data-offset-y="15"></div>
+</div>
+
+<div class="container">
+  <div class="anchor"></div>
+  <div class="target" style="bottom: -50px;" data-expected-height="150" data-offset-y="0"></div>
 </div>
 
 <!-- both insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="top: 10px; bottom: 20px;" data-expected-height="30" data-offset-y="50"></div>
+  <div class="target" style="top: 10px; bottom: 20px;" data-expected-height="70" data-offset-y="30"></div>
 </div>
 
 <div class="container">
@@ -81,5 +91,5 @@
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="top: -10px; bottom: -50px;" data-expected-height="150" data-offset-y="-10"></div>
+  <div class="target" style="top: -10px; bottom: -50px;" data-expected-height="160" data-offset-y="-10"></div>
 </div>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-center-vrl-htb.html b/tests/wpt/tests/css/css-anchor-position/anchor-center-vrl-htb.html
index 3e4f485cec3..8f7af0414ed 100644
--- a/tests/wpt/tests/css/css-anchor-position/anchor-center-vrl-htb.html
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-center-vrl-htb.html
@@ -45,34 +45,44 @@
 <!-- no insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" data-expected-width="70" data-offset-x="30"></div>
+  <div class="target" data-expected-width="100" data-offset-x="0"></div>
+</div>
+
+<div class="container">
+  <div class="anchor"></div>
+  <div class="target" style="max-width: 60px;" data-expected-width="60" data-offset-x="35"></div>
 </div>
 
 <!-- single insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="left: 20px;" data-expected-width="70" data-offset-x="30"></div>
+  <div class="target" style="left: 20px;" data-expected-width="80" data-offset-x="20"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="right: 20px;" data-expected-width="30" data-offset-x="50"></div>
+  <div class="target" style="right: 20px;" data-expected-width="80" data-offset-x="20"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="right: -20px;" data-expected-width="110" data-offset-x="10"></div>
+  <div class="target" style="right: -20px;" data-expected-width="120" data-offset-x="0"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="right: -100px;" data-expected-width="130" data-offset-x="0"></div>
+  <div class="target" style="max-width: 100px; right: -20px;" data-expected-width="100" data-offset-x="15"></div>
+</div>
+
+<div class="container">
+  <div class="anchor"></div>
+  <div class="target" style="right: -50px;" data-expected-width="150" data-offset-x="0"></div>
 </div>
 
 <!-- both insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="left: 10px; right: 20px;" data-expected-width="30" data-offset-x="50"></div>
+  <div class="target" style="left: 10px; right: 20px;" data-expected-width="70" data-offset-x="30"></div>
 </div>
 
 <div class="container">
@@ -82,5 +92,5 @@
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="left: -10px; right: -50px;" data-expected-width="150" data-offset-x="-10"></div>
+  <div class="target" style="left: -10px; right: -50px;" data-expected-width="160" data-offset-x="-10"></div>
 </div>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-center-vrl-vrl.html b/tests/wpt/tests/css/css-anchor-position/anchor-center-vrl-vrl.html
index fe40c731419..d8e90057dc3 100644
--- a/tests/wpt/tests/css/css-anchor-position/anchor-center-vrl-vrl.html
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-center-vrl-vrl.html
@@ -44,34 +44,44 @@
 <!-- no insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" data-expected-height="70" data-offset-y="30"></div>
+  <div class="target" data-expected-height="100" data-offset-y="0"></div>
+</div>
+
+<div class="container">
+  <div class="anchor"></div>
+  <div class="target" style="max-height: 60px;" data-expected-height="60" data-offset-y="35"></div>
 </div>
 
 <!-- single insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="top: 20px;" data-expected-height="70" data-offset-y="30"></div>
+  <div class="target" style="top: 20px;" data-expected-height="80" data-offset-y="20"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="bottom: 20px;" data-expected-height="30" data-offset-y="50"></div>
+  <div class="target" style="bottom: 20px;" data-expected-height="80" data-offset-y="20"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="bottom: -20px;" data-expected-height="110" data-offset-y="10"></div>
+  <div class="target" style="bottom: -20px;" data-expected-height="120" data-offset-y="0"></div>
 </div>
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="bottom: -100px;" data-expected-height="130" data-offset-y="0"></div>
+  <div class="target" style="max-height: 100px; bottom: -20px;" data-expected-height="100" data-offset-y="15"></div>
+</div>
+
+<div class="container">
+  <div class="anchor"></div>
+  <div class="target" style="bottom: -50px;" data-expected-height="150" data-offset-y="0"></div>
 </div>
 
 <!-- both insets -->
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="top: 10px; bottom: 20px;" data-expected-height="30" data-offset-y="50"></div>
+  <div class="target" style="top: 10px; bottom: 20px;" data-expected-height="70" data-offset-y="30"></div>
 </div>
 
 <div class="container">
@@ -81,5 +91,5 @@
 
 <div class="container">
   <div class="anchor"></div>
-  <div class="target" style="top: -10px; bottom: -50px;" data-expected-height="150" data-offset-y="-10"></div>
+  <div class="target" style="top: -10px; bottom: -50px;" data-expected-height="160" data-offset-y="-10"></div>
 </div>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-parse-invalid.html b/tests/wpt/tests/css/css-anchor-position/anchor-parse-invalid.html
index de4b0ffac45..f64a1fe2fed 100644
--- a/tests/wpt/tests/css/css-anchor-position/anchor-parse-invalid.html
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-parse-invalid.html
@@ -21,6 +21,7 @@ test_invalid_value('top', 'anchor(--foo top, 10px, 20%)');
 
 // Anchor name must be a dashed ident
 test_invalid_value('top', 'anchor(foo top)');
+test_invalid_value('top', 'anchor(top foo)');
 
 // Invalid anchor side values
 test_invalid_value('top', 'anchor(--foo height)');
@@ -33,6 +34,7 @@ test_invalid_value('top', 'anchor(--foo top, 100s)');
 test_invalid_value('top', 'anchor(--foo top, bottom)');
 test_invalid_value('top', 'anchor(--foo top, anchor(bar top))');
 test_invalid_value('top', 'anchor(--foo top, anchor-size(--bar height))');
+test_invalid_value('top', 'anchor(--foo top, auto');
 
 // Invalid anchor values in calc tree
 test_invalid_value('top', 'calc(anchor(foo top) + 10px + 10%)');
diff --git a/tests/wpt/tests/css/css-anchor-position/auto-margins-position-area.html b/tests/wpt/tests/css/css-anchor-position/auto-margins-position-area.html
new file mode 100644
index 00000000000..83014100b9b
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/auto-margins-position-area.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/">
+<style>
+.container {
+  position: relative;
+  width: 100px;
+  height: 100px;
+  border: solid 3px;
+}
+
+.anchor {
+  anchor-name: --a;
+  background: lime;
+  width: 20px;
+  height: 20px;
+  position: relative;
+  left: 20px;
+  top: 30px;
+}
+
+.abspos {
+  background: cornflowerblue;
+  margin: auto;
+  position: absolute;
+  position-area: bottom;
+  position-anchor: --a;
+}
+</style>
+
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+<body onload="checkLayout('.abspos')">
+<div class="container">
+  <div class="anchor"></div>
+  <div class="abspos" data-offset-x=10 data-offset-y=65>
+    <div style="width: 80px; height: 20px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/tests/css/css-anchor-position/chrome-365594098-crash.html b/tests/wpt/tests/css/css-anchor-position/chrome-365594098-crash.html
new file mode 100644
index 00000000000..44cfe304673
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/chrome-365594098-crash.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<style>
+#container {
+  position: relative;
+  width: 100px;
+  height: 100px;
+}
+
+#anchor {
+  position: absolute;
+  anchor-name: --a;
+  left: 0;
+  top: 0;
+  width: 10px;
+  height: 10px;
+  background: cornflowerblue;
+}
+
+#target {
+  position: absolute;
+  position-anchor: --a;
+  left: 0;
+  top: anchor(bottom);
+  width: 10px;
+  height: 80px;
+  background: lime;
+  position-try-fallbacks: --fallback;
+}
+
+@position-try --fallback {
+  left: anchor(right);
+  top: 0;
+  width: 10px;
+  height: 10%;
+}
+
+</style>
+<div id="container">
+  <div id="anchor"></div>
+  <div id="target"></div>
+</div>
+<script>
+document.body.offsetTop;
+document.getElementById('container').style.height = '20px';
+</script>
diff --git a/tests/wpt/tests/css/css-animations/display-none-dont-cancel-pseudo.tentative.html b/tests/wpt/tests/css/css-animations/display-none-dont-cancel-pseudo.tentative.html
index bed4ec2b80d..66a89bb29a6 100644
--- a/tests/wpt/tests/css/css-animations/display-none-dont-cancel-pseudo.tentative.html
+++ b/tests/wpt/tests/css/css-animations/display-none-dont-cancel-pseudo.tentative.html
@@ -18,7 +18,7 @@
 }
 
 .target.animated::after {
-  animation: display-animation 1ms forwards;
+  animation: display-animation 1s forwards;
 }
 
 </style>
@@ -42,7 +42,8 @@ promise_test(async t => {
   assert_equals(cs.marginLeft, "100px");
   assert_equals(cs.display, "block");
 
-  await runningAnimations[0].finished;
+  runningAnimations[0].finish();
+
   assert_equals(animations().length, 1, "The animation remains after completion");
   assert_equals(cs.marginLeft, "200px");
   assert_equals(cs.display, "none");
diff --git a/tests/wpt/tests/css/css-animations/parsing/animation-timing-function-invalid.html b/tests/wpt/tests/css/css-animations/parsing/animation-timing-function-invalid.html
new file mode 100644
index 00000000000..972817ec2d2
--- /dev/null
+++ b/tests/wpt/tests/css/css-animations/parsing/animation-timing-function-invalid.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>CSS Animations: animation-timing-function parsing (invalid)</title>
+<link rel="help" href="https://drafts.csswg.org/css-animations-2/#animation-timing-function">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<script>
+test_invalid_value("animation-timing-function", "steps(2,()start)");
+test_invalid_value("animation-timing-function", "steps(2,() start)");
+test_invalid_value("animation-timing-function", "steps(2, ()start)");
+test_invalid_value("animation-timing-function", "steps(2())");
+test_invalid_value("animation-timing-function", "steps(2 ())");
+test_invalid_value("animation-timing-function", "steps(2,())");
+test_invalid_value("animation-timing-function", "steps(2, ())");
+</script>
diff --git a/tests/wpt/tests/css/css-cascade/at-scope-parsing.html b/tests/wpt/tests/css/css-cascade/at-scope-parsing.html
index e984c1dcc29..18a4b122536 100644
--- a/tests/wpt/tests/css/css-cascade/at-scope-parsing.html
+++ b/tests/wpt/tests/css/css-cascade/at-scope-parsing.html
@@ -49,16 +49,14 @@
   test_valid('@scope to ()', '@scope');
   test_valid('@scope () to ()', '@scope');
 
-  // Forgiving behavior (keep invalid selector as-is for the serialization):
-  test_valid('@scope (.c <> .d)');
-  test_valid('@scope (.a, .c <> .d)');
-  test_valid('@scope (.a <> .b, .c)');
-  test_valid('@scope (div::before)');
-  test_valid('@scope (div::after)');
-  test_valid('@scope (slotted(div))');
-  test_valid('@scope (.a) to (div::before)');
-  test_valid('@scope (> &) to (>>)');
-
+  test_invalid('@scope (.c <> .d)');
+  test_invalid('@scope (.a, .c <> .d)');
+  test_invalid('@scope (.a <> .b, .c)');
+  test_invalid('@scope (div::before)');
+  test_invalid('@scope (div::after)');
+  test_invalid('@scope (slotted(div))');
+  test_invalid('@scope (.a) to (div::before)');
+  test_invalid('@scope (> &) to (>>)');
   test_invalid('@scope div');
   test_invalid('@scope (.a) unknown (.c)');
   test_invalid('@scope (.a) to unknown (.c)');
diff --git a/tests/wpt/tests/css/css-cascade/scope-nesting.html b/tests/wpt/tests/css/css-cascade/scope-nesting.html
index c0fc7150fae..2af8fd1a74e 100644
--- a/tests/wpt/tests/css/css-cascade/scope-nesting.html
+++ b/tests/wpt/tests/css/css-cascade/scope-nesting.html
@@ -542,3 +542,37 @@ test((t) => {
   assert_equals(getComputedStyle(b_inside).zIndex, '1');
 }, 'Scoped nested group rule');
 </script>
+
+<template id=test_scoped_within_scoped>
+  <div>
+    <style>
+      @scope (.a) {
+        @scope(#descendant) {
+          :scope {
+            z-index: 1;
+          }
+        }
+        @scope (> #child) {
+          :scope {
+            z-index: 1;
+          }
+        }
+      }
+    </style>
+    <div class="a">
+      <div id="descendant">
+      </div>
+      <div id="child">
+      </div>
+    </div>
+</div>
+</template>
+<script>
+test((t) => {
+  t.add_cleanup(() => main.replaceChildren());
+  main.append(test_scoped_within_scoped.content.cloneNode(true));
+
+  assert_equals(getComputedStyle(descendant).zIndex, '1');
+  assert_equals(getComputedStyle(child).zIndex, '1');
+}, 'Scoped nested within another scope');
+</script>
diff --git a/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html b/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
index 4997d6585d8..8407e527017 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-computed-relative-color.html
@@ -139,6 +139,12 @@
   // color-mix
   fuzzy_test_computed_color(`rgb(from color-mix(in srgb, red, red) r g b / alpha)`, `color(srgb 1 0 0)`);
 
+  // color-mix combined with 'currentColor'
+  fuzzy_test_computed_color_using_currentcolor(`rgb(from color-mix(in srgb, currentColor, red) r g b / alpha)`, `color(srgb 0.7 0.1 0.3)`, `rebeccapurple`);
+
+  // Nesting combined with 'currentColor'
+  fuzzy_test_computed_color_using_currentcolor(`rgb(from rgb(from currentColor r g b) r g b)`, `color(srgb 0.4 0.2 0.6)`, `rebeccapurple`);
+
   // hsl(from ...)
 
   // Testing no modifications.
@@ -219,6 +225,7 @@
 
   // Testing with 'currentColor'
   fuzzy_test_computed_color_using_currentcolor(`hsl(from currentColor h s l)`, `color(srgb 0.4 0.2 0.6)`);
+  fuzzy_test_computed_color_using_currentcolor(`hsl(from currentColor calc((h / 360) * 360deg) s l)`, `color(srgb 0.2 0.2 0.6)`);
 
   // color-mix
   fuzzy_test_computed_color(`hsl(from color-mix(in srgb, red, red) h s l / alpha)`, `color(srgb 1 0 0)`);
diff --git a/tests/wpt/tests/css/css-color/parsing/color-valid-color-function.html b/tests/wpt/tests/css/css-color/parsing/color-valid-color-function.html
index d9202a1bc5e..bfc932104e5 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-valid-color-function.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-valid-color-function.html
@@ -12,68 +12,36 @@
 </head>
 <body>
 <script>
-for (const colorSpace of [ "srgb", "srgb-linear", "a98-rgb", "rec2020", "prophoto-rgb", "display-p3" ]) {
-    test_valid_value("color", `color(${colorSpace} 0% 0% 0%)`, `color(${colorSpace} 0 0 0)`);
-    test_valid_value("color", `color(${colorSpace} 10% 10% 10%)`, `color(${colorSpace} 0.1 0.1 0.1)`);
-    test_valid_value("color", `color(${colorSpace} .2 .2 25%)`, `color(${colorSpace} 0.2 0.2 0.25)`);
-    test_valid_value("color", `color(${colorSpace} 0 0 0 / 1)`, `color(${colorSpace} 0 0 0)`);
-    test_valid_value("color", `color(${colorSpace} 0% 0 0 / 0.5)`, `color(${colorSpace} 0 0 0 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} 20% 0 10/0.5)`, `color(${colorSpace} 0.2 0 10 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} 20% 0 10/50%)`, `color(${colorSpace} 0.2 0 10 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} 400% 0 10/50%)`, `color(${colorSpace} 4 0 10 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} 50% -160 160)`, `color(${colorSpace} 0.5 -160 160)`);
-    test_valid_value("color", `color(${colorSpace} 50% -200 200)`, `color(${colorSpace} 0.5 -200 200)`);
-    test_valid_value("color", `color(${colorSpace} 0 0 0 / -10%)`, `color(${colorSpace} 0 0 0 / 0)`);
-    test_valid_value("color", `color(${colorSpace} 0 0 0 / 110%)`, `color(${colorSpace} 0 0 0)`);
-    test_valid_value("color", `color(${colorSpace} 0 0 0 / 300%)`, `color(${colorSpace} 0 0 0)`);
-    test_valid_value("color", `color(${colorSpace} 200 200 200)`, `color(${colorSpace} 200 200 200)`);
-    test_valid_value("color", `color(${colorSpace} 200 200 200 / 200)`, `color(${colorSpace} 200 200 200)`);
-    test_valid_value("color", `color(${colorSpace} -200 -200 -200)`, `color(${colorSpace} -200 -200 -200)`);
-    test_valid_value("color", `color(${colorSpace} -200 -200 -200 / -200)`, `color(${colorSpace} -200 -200 -200 / 0)`);
-    test_valid_value("color", `color(${colorSpace} 200% 200% 200%)`, `color(${colorSpace} 2 2 2)`);
-    test_valid_value("color", `color(${colorSpace} 200% 200% 200% / 200%)`, `color(${colorSpace} 2 2 2)`);
-    test_valid_value("color", `color(${colorSpace} -200% -200% -200% / -200%)`, `color(${colorSpace} -2 -2 -2 / 0)`);
-    test_valid_value("color", `color(${colorSpace} calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))`, `color(${colorSpace} 1.5 -0.5 0.5 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))`, `color(${colorSpace} 1.5 -0.5 0.5 / 0)`);
-
-    test_valid_value("color", `color(${colorSpace} none none none / none)`, `color(${colorSpace} none none none / none)`);
-    test_valid_value("color", `color(${colorSpace} none none none)`, `color(${colorSpace} none none none)`);
-    test_valid_value("color", `color(${colorSpace} 10% none none / none)`, `color(${colorSpace} 0.1 none none / none)`);
-    test_valid_value("color", `color(${colorSpace} none none none / 0.5)`, `color(${colorSpace} none none none / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} 0 0 0 / none)`, `color(${colorSpace} 0 0 0 / none)`);
-
-    test_valid_value("color", `color(${colorSpace} 0 calc(infinity) 0)`, `color(${colorSpace} 0 calc(infinity) 0)`);
-    test_valid_value("color", `color(${colorSpace} 0 calc(-infinity) 0)`, `color(${colorSpace} 0 calc(-infinity) 0)`);
-    test_valid_value("color", `color(${colorSpace} calc(NaN) 0 0)`, `color(${colorSpace} calc(NaN) 0 0)`);
-    test_valid_value("color", `color(${colorSpace} calc(0 / 0) 0 0)`, `color(${colorSpace} calc(NaN) 0 0)`);
-
-    // calc(50% + (sign(1em - 10px) * 10%)) cannot be evaluated eagerly because font relative units are not yet known at parse time.
-    test_valid_value("color", `color(${colorSpace} calc(50% + (sign(1em - 10px) * 10%)) 0 0 / 0.5)`, `color(${colorSpace} calc(50% + (10% * sign(1em - 10px))) 0 0 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} 0.5 0 0 / calc(50% + (sign(1em - 10px) * 10%)))`, `color(${colorSpace} 0.5 0 0 / calc(50% + (10% * sign(1em - 10px))))`);
-}
-
-for (const colorSpace of [ "xyz", "xyz-d50", "xyz-d65" ]) {
+for (const colorSpace of [ "srgb", "srgb-linear", "a98-rgb", "rec2020", "prophoto-rgb", "display-p3", "xyz", "xyz-d50", "xyz-d65" ]) {
     const resultColorSpace = colorSpace == "xyz" ? "xyz-d65" : colorSpace;
 
-    test_valid_value("color", `color(${colorSpace} 0 0 0)`, `color(${resultColorSpace} 0 0 0)`);
+    test_valid_value("color", `color(${colorSpace} 0% 0% 0%)`, `color(${resultColorSpace} 0 0 0)`);
+    test_valid_value("color", `color(${colorSpace} 10% 10% 10%)`, `color(${resultColorSpace} 0.1 0.1 0.1)`);
+    test_valid_value("color", `color(${colorSpace} .2 .2 25%)`, `color(${resultColorSpace} 0.2 0.2 0.25)`);
     test_valid_value("color", `color(${colorSpace} 0 0 0 / 1)`, `color(${resultColorSpace} 0 0 0)`);
-    test_valid_value("color", `color(${colorSpace} 1 1 1)`, `color(${resultColorSpace} 1 1 1)`);
-    test_valid_value("color", `color(${colorSpace} 1 1 1 / 1)`, `color(${resultColorSpace} 1 1 1)`);
-    test_valid_value("color", `color(${colorSpace} -1 -1 -1)`, `color(${resultColorSpace} -1 -1 -1)`);
-    test_valid_value("color", `color(${colorSpace} 0.1 0.1 0.1)`, `color(${resultColorSpace} 0.1 0.1 0.1)`);
-    test_valid_value("color", `color(${colorSpace} 10 10 10)`, `color(${resultColorSpace} 10 10 10)`);
-    test_valid_value("color", `color(${colorSpace} .2 .2 .25)`, `color(${resultColorSpace} 0.2 0.2 0.25)`);
-    test_valid_value("color", `color(${colorSpace} 0 0 0 / 0.5)`, `color(${resultColorSpace} 0 0 0 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} .20 0 10/0.5)`, `color(${resultColorSpace} 0.2 0 10 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} .20 0 10/50%)`, `color(${resultColorSpace} 0.2 0 10 / 0.5)`);
+    test_valid_value("color", `color(${colorSpace} 0% 0 0 / 0.5)`, `color(${resultColorSpace} 0 0 0 / 0.5)`);
+    test_valid_value("color", `color(${colorSpace} 20% 0 10/0.5)`, `color(${resultColorSpace} 0.2 0 10 / 0.5)`);
+    test_valid_value("color", `color(${colorSpace} 20% 0 10/50%)`, `color(${resultColorSpace} 0.2 0 10 / 0.5)`);
+    test_valid_value("color", `color(${colorSpace} 400% 0 10/50%)`, `color(${resultColorSpace} 4 0 10 / 0.5)`);
+    test_valid_value("color", `color(${colorSpace} 50% -160 160)`, `color(${resultColorSpace} 0.5 -160 160)`);
+    test_valid_value("color", `color(${colorSpace} 50% -200 200)`, `color(${resultColorSpace} 0.5 -200 200)`);
     test_valid_value("color", `color(${colorSpace} 0 0 0 / -10%)`, `color(${resultColorSpace} 0 0 0 / 0)`);
     test_valid_value("color", `color(${colorSpace} 0 0 0 / 110%)`, `color(${resultColorSpace} 0 0 0)`);
     test_valid_value("color", `color(${colorSpace} 0 0 0 / 300%)`, `color(${resultColorSpace} 0 0 0)`);
-    test_valid_value("color", `color(${colorSpace} calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))`, `color(${resultColorSpace} 1.5 -0.5 0.5 / 0.5)`);
+    test_valid_value("color", `color(${colorSpace} 200 200 200)`, `color(${resultColorSpace} 200 200 200)`);
+    test_valid_value("color", `color(${colorSpace} 200 200 200 / 200)`, `color(${resultColorSpace} 200 200 200)`);
+    test_valid_value("color", `color(${colorSpace} -200 -200 -200)`, `color(${resultColorSpace} -200 -200 -200)`);
+    test_valid_value("color", `color(${colorSpace} -200 -200 -200 / -200)`, `color(${resultColorSpace} -200 -200 -200 / 0)`);
+    test_valid_value("color", `color(${colorSpace} 200% 200% 200%)`, `color(${resultColorSpace} 2 2 2)`);
+    test_valid_value("color", `color(${colorSpace} 200% 200% 200% / 200%)`, `color(${resultColorSpace} 2 2 2)`);
+    test_valid_value("color", `color(${colorSpace} -200% -200% -200% / -200%)`, `color(${resultColorSpace} -2 -2 -2 / 0)`);
+    test_valid_value("color", `color(${colorSpace} calc(0.5 + 1) calc(0.5 - 1) calc(0.5) / calc(-0.5 + 1))`, `color(${resultColorSpace} calc(1.5) calc(-0.5) calc(0.5) / calc(0.5))`);
+    test_valid_value("color", `color(${colorSpace} calc(50% * 3) calc(-150% / 3) calc(50%) / calc(-50% * 3))`, `color(${resultColorSpace} calc(150%) calc(-50%) calc(50%) / calc(-150%))`);
+    test_valid_value("color", `color(${colorSpace} calc(50%) 50% 0.5)`, `color(${resultColorSpace} calc(50%) 0.5 0.5)`);
 
     test_valid_value("color", `color(${colorSpace} none none none / none)`, `color(${resultColorSpace} none none none / none)`);
     test_valid_value("color", `color(${colorSpace} none none none)`, `color(${resultColorSpace} none none none)`);
-    test_valid_value("color", `color(${colorSpace} 0.2 none none / none)`, `color(${resultColorSpace} 0.2 none none / none)`);
+    test_valid_value("color", `color(${colorSpace} 10% none none / none)`, `color(${resultColorSpace} 0.1 none none / none)`);
     test_valid_value("color", `color(${colorSpace} none none none / 0.5)`, `color(${resultColorSpace} none none none / 0.5)`);
     test_valid_value("color", `color(${colorSpace} 0 0 0 / none)`, `color(${resultColorSpace} 0 0 0 / none)`);
 
@@ -83,8 +51,8 @@ for (const colorSpace of [ "xyz", "xyz-d50", "xyz-d65" ]) {
     test_valid_value("color", `color(${colorSpace} calc(0 / 0) 0 0)`, `color(${resultColorSpace} calc(NaN) 0 0)`);
 
     // calc(50% + (sign(1em - 10px) * 10%)) cannot be evaluated eagerly because font relative units are not yet known at parse time.
-    test_valid_value("color", `color(${colorSpace} calc(0.5 + (sign(1em - 10px) * 0.1)) 0 0 / 0.5)`, `color(${resultColorSpace} calc(0.5 + (0.1 * sign(1em - 10px))) 0 0 / 0.5)`);
-    test_valid_value("color", `color(${colorSpace} 0.5 0 0 / calc(0.5 + (sign(1em - 10px) * 0.1)))`, `color(${resultColorSpace} 0.5 0 0 / calc(0.5 + (0.1 * sign(1em - 10px))))`);
+    test_valid_value("color", `color(${colorSpace} calc(50% + (sign(1em - 10px) * 10%)) 0 0 / 0.5)`, `color(${resultColorSpace} calc(50% + (10% * sign(1em - 10px))) 0 0 / 0.5)`);
+    test_valid_value("color", `color(${colorSpace} 0.5 0 0 / calc(50% + (sign(1em - 10px) * 10%)))`, `color(${resultColorSpace} 0.5 0 0 / calc(50% + (10% * sign(1em - 10px))))`);
 }
 </script>
 </body>
diff --git a/tests/wpt/tests/css/css-color/parsing/color-valid-hsl.html b/tests/wpt/tests/css/css-color/parsing/color-valid-hsl.html
index b60cd744690..a9d2a7b8870 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-valid-hsl.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-valid-hsl.html
@@ -63,23 +63,26 @@ tests = [
     ["hsl(90 50% 50% / calc(0 / 0))", "rgba(128, 191, 64, 0)"], // hsl(90 50% 50% / 0)
 
     // calc(50% + (sign(1em - 10px) * 10%)) cannot be evaluated eagerly because font relative units are not yet known at parse time.
-    ["hsl(calc(50deg + (sign(1em - 10px) * 10deg)), 0%, 0%, 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0% 0% / 50%)"],
-    ["hsla(calc(50deg + (sign(1em - 10px) * 10deg)), 0%, 0%, 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0% 0% / 50%)"],
-    ["hsl(calc(50 + (sign(1em - 10px) * 10)), 0%, 0%, 50%)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0% 0% / 50%)"],
-    ["hsla(calc(50 + (sign(1em - 10px) * 10)), 0%, 0%, 50%)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0% 0% / 50%)"],
-    ["hsl(0deg, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0deg 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
-    ["hsla(0deg, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0deg 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
-    ["hsl(0, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
-    ["hsla(0, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
+    ["hsl(calc(50deg + (sign(1em - 10px) * 10deg)), 0%, 0%, 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 0 / 0.5)"],
+    ["hsla(calc(50deg + (sign(1em - 10px) * 10deg)), 0%, 0%, 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 0 / 0.5)"],
+    ["hsl(calc(50 + (sign(1em - 10px) * 10)), 0%, 0%, 50%)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
+    ["hsla(calc(50 + (sign(1em - 10px) * 10)), 0%, 0%, 50%)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
+    ["hsl(0deg, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
+    ["hsla(0deg, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
+    ["hsl(0, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
+    ["hsla(0, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
 
-    ["hsl(calc(50deg + (sign(1em - 10px) * 10deg)) 0% 0% / 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0% 0% / 50%)"],
-    ["hsla(calc(50deg + (sign(1em - 10px) * 10deg)) 0% 0% / 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0% 0% / 50%)"],
+    ["hsl(calc(50deg + (sign(1em - 10px) * 10deg)) 0% 0% / 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 0 / 0.5)"],
+    ["hsla(calc(50deg + (sign(1em - 10px) * 10deg)) 0% 0% / 50%)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 0 / 0.5)"],
     ["hsl(calc(50 + (sign(1em - 10px) * 10)) 0 0 / 0.5)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
     ["hsla(calc(50 + (sign(1em - 10px) * 10)) 0 0 / 0.5)", "hsl(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
-    ["hsl(0deg 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0deg 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
-    ["hsla(0deg 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0deg 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
+    ["hsl(0deg 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
+    ["hsla(0deg 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "hsl(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
     ["hsl(0 0 0 / calc(0.75 + (sign(1em - 10px) * 0.1)))", "hsl(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
     ["hsla(0 0 0 / calc(0.75 + (sign(1em - 10px) * 0.1)))", "hsl(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
+
+    ["hsla(calc(50deg + (sign(1em - 10px) * 10deg)) -100 300 / 0.5)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 300 / 0.5)"],
+    ["hsla(calc(50deg + (sign(1em - 10px) * 10deg)) -100% 300% / 0.5)", "hsl(calc(50deg + (10deg * sign(1em - 10px))) 0 300 / 0.5)"],
 ];
 
 for (const test of tests) {
diff --git a/tests/wpt/tests/css/css-color/parsing/color-valid-hwb.html b/tests/wpt/tests/css/css-color/parsing/color-valid-hwb.html
index 1f9799eade3..007f4be876f 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-valid-hwb.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-valid-hwb.html
@@ -58,9 +58,9 @@ tests = [
     ["hwb(90 20% 10% / calc(0 / 0))", "rgba(140, 230, 51, 0)"], // hwb(90 20% 10% / 0)
 
     // calc(50% + (sign(1em - 10px) * 10%)) cannot be evaluated eagerly because font relative units are not yet known at parse time.
-    ["hwb(calc(110deg + (sign(1em - 10px) * 10deg)) 30% 50% / 50%)", "hwb(calc(110deg + (10deg * sign(1em - 10px))) 30% 50% / 50%)"],
+    ["hwb(calc(110deg + (sign(1em - 10px) * 10deg)) 30% 50% / 50%)", "hwb(calc(110deg + (10deg * sign(1em - 10px))) 30 50 / 0.5)"],
     ["hwb(calc(110 + (sign(1em - 10px) * 10)) 30 50 / 0.5)", "hwb(calc(110 + (10 * sign(1em - 10px))) 30 50 / 0.5)"],
-    ["hwb(120deg 30% 50% / calc(50% + (sign(1em - 10px) * 10%)))", "hwb(120deg 30% 50% / calc(50% + (10% * sign(1em - 10px))))"],
+    ["hwb(120deg 30% 50% / calc(50% + (sign(1em - 10px) * 10%)))", "hwb(120 30 50 / calc(50% + (10% * sign(1em - 10px))))"],
     ["hwb(120 30 50 / calc(0.75 + (sign(1em - 10px) * 0.1)))", "hwb(120 30 50 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
 ];
 
diff --git a/tests/wpt/tests/css/css-color/parsing/color-valid-lab.html b/tests/wpt/tests/css/css-color/parsing/color-valid-lab.html
index ffa3b553882..a085bfb4710 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-valid-lab.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-valid-lab.html
@@ -30,8 +30,14 @@ tests = [
     ["lab(-40 0 0)", "lab(0 0 0)"],
     ["lab(50 -20 0)", "lab(50 -20 0)"],
     ["lab(50 0 -20)", "lab(50 0 -20)"],
-    ["lab(calc(50 * 3) calc(0.5 - 1) calc(1.5) / calc(-0.5 + 1))", "lab(100 -0.5 1.5 / 0.5)"],
-    ["lab(calc(-50 * 3) calc(0.5 + 1) calc(-1.5) / calc(-0.5 * 2))", "lab(0 1.5 -1.5 / 0)"],
+    ["lab(50% 50% -20%)", "lab(50 62.5 -25)"],
+    ["lab(50 -20% -20%)", "lab(50 -25 -25)"],
+    ["lab(calc(50 * 3) calc(0.5 - 1) calc(1.5) / calc(-0.5 + 1))", "lab(calc(150) calc(-0.5) calc(1.5) / calc(0.5))"],
+    ["lab(calc(-50 * 3) calc(0.5 + 1) calc(-1.5) / calc(-0.5 * 2))", "lab(calc(-150) calc(1.5) calc(-1.5) / calc(-1))"],
+    ["lab(calc(50%) 50% 0.5)", "lab(calc(50%) 62.5 0.5)"],
+    ["lab(200 calc(50%) 0.5)", "lab(100 calc(50%) 0.5)"],
+    ["lab(-200 calc(50%) 0.5)", "lab(0 calc(50%) 0.5)"],
+    ["lab(none 20 calc(0.5))", "lab(none 20 calc(0.5))"],
 
     ["lab(none none none / none)", "lab(none none none / none)"],
     ["lab(none none none)", "lab(none none none)"],
@@ -39,7 +45,7 @@ tests = [
     ["lab(none none none / 0.5)", "lab(none none none / 0.5)"],
     ["lab(0 0 0 / none)", "lab(0 0 0 / none)"],
 
-    ["lab(calc(infinity) 0 0)", "lab(100 0 0)"],
+    ["lab(calc(infinity) 0 0)", "lab(calc(infinity) 0 0)"],
     ["lab(50 calc(infinity) 0)", "lab(50 calc(infinity) 0)"],
     ["lab(50 calc(-infinity) 0)", "lab(50 calc(-infinity) 0)"],
     ["lab(calc(NaN) 0 0)", "lab(calc(NaN) 0 0)"],
@@ -60,8 +66,14 @@ tests = [
     ["oklab(-0.4 0 0)", "oklab(0 0 0)"],
     ["oklab(0.5 -2 0)", "oklab(0.5 -2 0)"],
     ["oklab(0.5 0 -2)", "oklab(0.5 0 -2)"],
-    ["oklab(calc(0.5 * 3) calc(0.5 - 1) calc(1.5) / calc(-0.5 + 1))", "oklab(1 -0.5 1.5 / 0.5)"],
-    ["oklab(calc(-0.5 * 3) calc(0.5 + 1) calc(-1.5) / calc(-0.5 * 2))", "oklab(0 1.5 -1.5 / 0)"],
+    ["oklab(50% 50% -20%)", "oklab(0.5 0.2 -0.08)"],
+    ["oklab(0.5 -20% -20%)", "oklab(0.5 -0.08 -0.08)"],
+    ["oklab(calc(0.5 * 3) calc(0.5 - 1) calc(1.5) / calc(-0.5 + 1))", "oklab(calc(1.5) calc(-0.5) calc(1.5) / calc(0.5))"],
+    ["oklab(calc(-0.5 * 3) calc(0.5 + 1) calc(-1.5) / calc(-0.5 * 2))", "oklab(calc(-1.5) calc(1.5) calc(-1.5) / calc(-1))"],
+    ["oklab(calc(50%) 50% 0.5)", "oklab(calc(50%) 0.2 0.5)"],
+    ["oklab(200 calc(50%) 0.5)", "oklab(1 calc(50%) 0.5)"],
+    ["oklab(-200 calc(50%) 0.5)", "oklab(0 calc(50%) 0.5)"],
+    ["oklab(none 0.2 calc(0.5))", "oklab(none 0.2 calc(0.5))"],
 
     ["oklab(none none none / none)", "oklab(none none none / none)"],
     ["oklab(none none none)", "oklab(none none none)"],
@@ -73,7 +85,7 @@ tests = [
     ["lab(20% -50% 90%/0.5)", "lab(20 -62.5 112.5 / 0.5)"],
     ["oklab(20% 70% -80%/0.5)", "oklab(0.2 0.28 -0.32 / 0.5)"],
 
-    ["oklab(calc(infinity) 0 0)", "oklab(1 0 0)"],
+    ["oklab(calc(infinity) 0 0)", "oklab(calc(infinity) 0 0)"],
     ["oklab(0.5 calc(infinity) 0)", "oklab(0.5 calc(infinity) 0)"],
     ["oklab(0.5 calc(-infinity) 0)", "oklab(0.5 calc(-infinity) 0)"],
     ["oklab(calc(NaN) 0 0)", "oklab(calc(NaN) 0 0)"],
@@ -98,8 +110,15 @@ tests = [
     ["lch(0 0 0 / 0.5)", "lch(0 0 0 / 0.5)"],
     ["lch(10 20 20 / 110%)", "lch(10 20 20)"],
     ["lch(10 20 -700)", "lch(10 20 20)"],
-    ["lch(calc(50 * 3) calc(0.5 - 1) calc(20deg * 2) / calc(-0.5 + 1))", "lch(100 0 40 / 0.5)"],
-    ["lch(calc(-50 * 3) calc(0.5 + 1) calc(-20deg * 2) / calc(-0.5 * 2))", "lch(0 1.5 320 / 0)"],
+    ["lch(50% 50% 20)", "lch(50 75 20)"],
+    ["lch(0.5 -20% -20)", "lch(0.5 0 340)"],
+    ["lch(calc(50 * 3) calc(0.5 - 1) calc(20deg * 2) / calc(-0.5 + 1))", "lch(calc(150) calc(-0.5) calc(40deg) / calc(0.5))"],
+    ["lch(calc(-50 * 3) calc(0.5 + 1) calc(-20deg * 2) / calc(-0.5 * 2))", "lch(calc(-150) calc(1.5) calc(-40deg) / calc(-1))"],
+    ["lch(calc(50%) 50% 0.5)", "lch(calc(50%) 75 0.5)"],
+    ["lch(200 calc(50%) 0.5)", "lch(100 calc(50%) 0.5)"],
+    ["lch(-200 calc(50%) 0.5)", "lch(0 calc(50%) 0.5)"],
+    ["lch(calc(50%) -100 0.5)", "lch(calc(50%) 0 0.5)"],
+    ["lch(none 20 calc(0.5))", "lch(none 20 calc(0.5))"],
 
     ["lch(none none none / none)", "lch(none none none / none)"],
     ["lch(none none none)", "lch(none none none)"],
@@ -107,9 +126,9 @@ tests = [
     ["lch(none none none / 0.5)", "lch(none none none / 0.5)"],
     ["lch(0 0 0 / none)", "lch(0 0 0 / none)"],
 
-    ["lch(calc(infinity) 0 0)", "lch(100 0 0)"],
+    ["lch(calc(infinity) 0 0)", "lch(calc(infinity) 0 0)"],
     ["lch(50 calc(infinity) 0)", "lch(50 calc(infinity) 0)"],
-    ["lch(50 calc(-infinity) 0)", "lch(50 0 0)"],
+    ["lch(50 calc(-infinity) 0)", "lch(50 calc(-infinity) 0)"],
     ["lch(calc(NaN) 0 0)", "lch(calc(NaN) 0 0)"],
     ["lch(calc(0 / 0) 0 0)", "lch(calc(NaN) 0 0)"],
 
@@ -132,8 +151,15 @@ tests = [
     ["oklch(0 0 0 / 0.5)", "oklch(0 0 0 / 0.5)"],
     ["oklch(0.1 0.2 20 / 110%)", "oklch(0.1 0.2 20)"],
     ["oklch(0.1 0.2 -700)", "oklch(0.1 0.2 20)"],
-    ["oklch(calc(0.5 * 3) calc(0.5 - 1) calc(20deg * 2) / calc(-0.5 + 1))", "oklch(1 0 40 / 0.5)"],
-    ["oklch(calc(-0.5 * 3) calc(0.5 + 1) calc(-20deg * 2) / calc(-0.5 * 2))", "oklch(0 1.5 320 / 0)"],
+    ["oklch(50% 50% 20)", "oklch(0.5 0.2 20)"],
+    ["oklch(0.5 -20% -20)", "oklch(0.5 0 340)"],
+    ["oklch(calc(0.5 * 3) calc(0.5 - 1) calc(20deg * 2) / calc(-0.5 + 1))", "oklch(calc(1.5) calc(-0.5) calc(40deg) / calc(0.5))"],
+    ["oklch(calc(-0.5 * 3) calc(0.5 + 1) calc(-20deg * 2) / calc(-0.5 * 2))", "oklch(calc(-1.5) calc(1.5) calc(-40deg) / calc(-1))"],
+    ["oklch(calc(50%) 50% 0.5)", "oklch(calc(50%) 0.2 0.5)"],
+    ["oklch(200 calc(50%) 0.5)", "oklch(1 calc(50%) 0.5)"],
+    ["oklch(-200 calc(50%) 0.5)", "oklch(0 calc(50%) 0.5)"],
+    ["oklch(calc(50%) -100 0.5)", "oklch(calc(50%) 0 0.5)"],
+    ["oklch(none 0.2 calc(0.5))", "oklch(none 0.2 calc(0.5))"],
 
     ["oklch(none none none / none)", "oklch(none none none / none)"],
     ["oklch(none none none)", "oklch(none none none)"],
@@ -145,22 +171,22 @@ tests = [
     ["lch(20% 80% 10/0.5)", "lch(20 120 10 / 0.5)"],
     ["oklch(20% 60% 10/0.5)", "oklch(0.2 0.24 10 / 0.5)"],
 
-    ["oklch(calc(infinity) 0 0)", "oklch(1 0 0)"],
+    ["oklch(calc(infinity) 0 0)", "oklch(calc(infinity) 0 0)"],
     ["oklch(0.5 calc(infinity) 0)", "oklch(0.5 calc(infinity) 0)"],
-    ["oklch(0.5 calc(-infinity) 0)", "oklch(0.5 0 0)"],
+    ["oklch(0.5 calc(-infinity) 0)", "oklch(0.5 calc(-infinity) 0)"],
     ["oklch(calc(NaN) 0 0)", "oklch(calc(NaN) 0 0)"],
     ["oklch(calc(0 / 0) 0 0)", "oklch(calc(NaN) 0 0)"],
 
     // calc(50% + (sign(1em - 10px) * 10%)) cannot be evaluated eagerly because font relative units are not yet known at parse time.
-    ["lab(calc(50 + (sign(1em - 10px) * 10)) 30 50 / 50%)", "lab(calc(50 + (10 * sign(1em - 10px))) 30 50 / 50%)"],
-    ["oklab(calc(0.5 + (sign(1em - 10px) * 0.1)) 0.3 0.5 / 50%)", "oklab(calc(0.5 + (0.1 * sign(1em - 10px))) 0.3 0.5 / 50%)"],
+    ["lab(calc(50 + (sign(1em - 10px) * 10)) 30 50 / 50%)", "lab(calc(50 + (10 * sign(1em - 10px))) 30 50 / 0.5)"],
+    ["oklab(calc(0.5 + (sign(1em - 10px) * 0.1)) 0.3 0.5 / 50%)", "oklab(calc(0.5 + (0.1 * sign(1em - 10px))) 0.3 0.5 / 0.5)"],
     ["lab(60 30 50 / calc(50% + (sign(1em - 10px) * 10%)))", "lab(60 30 50 / calc(50% + (10% * sign(1em - 10px))))"],
     ["oklab(0.6 0.3 0.5 / calc(50% + (sign(1em - 10px) * 10%)))", "oklab(0.6 0.3 0.5 / calc(50% + (10% * sign(1em - 10px))))"],
 
-    ["lch(calc(50 + (sign(1em - 10px) * 10)) 30 50deg / 50%)", "lch(calc(50 + (10 * sign(1em - 10px))) 30 50deg / 50%)"],
-    ["oklch(calc(0.5 + (sign(1em - 10px) * 0.1)) 0.3 50deg / 50%)", "oklch(calc(0.5 + (0.1 * sign(1em - 10px))) 0.3 50deg / 50%)"],
-    ["lch(60 30 50deg / calc(50% + (sign(1em - 10px) * 10%)))", "lch(60 30 50deg / calc(50% + (10% * sign(1em - 10px))))"],
-    ["oklch(0.6 0.3 50deg / calc(50% + (sign(1em - 10px) * 10%)))", "oklch(0.6 0.3 50deg / calc(50% + (10% * sign(1em - 10px))))"],
+    ["lch(calc(50 + (sign(1em - 10px) * 10)) 30 50deg / 50%)", "lch(calc(50 + (10 * sign(1em - 10px))) 30 50 / 0.5)"],
+    ["oklch(calc(0.5 + (sign(1em - 10px) * 0.1)) 0.3 50deg / 50%)", "oklch(calc(0.5 + (0.1 * sign(1em - 10px))) 0.3 50 / 0.5)"],
+    ["lch(60 30 50deg / calc(50% + (sign(1em - 10px) * 10%)))", "lch(60 30 50 / calc(50% + (10% * sign(1em - 10px))))"],
+    ["oklch(0.6 0.3 50deg / calc(50% + (sign(1em - 10px) * 10%)))", "oklch(0.6 0.3 50 / calc(50% + (10% * sign(1em - 10px))))"],
 ];
 
 for (const test of tests) {
diff --git a/tests/wpt/tests/css/css-color/parsing/color-valid-rgb.html b/tests/wpt/tests/css/css-color/parsing/color-valid-rgb.html
index 6c9f49d6cd6..36487c3965a 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-valid-rgb.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-valid-rgb.html
@@ -71,26 +71,31 @@ tests = [
     ["rgba(0, 0, 0, calc(0 / 0))", "rgba(0, 0, 0, 0)"],
 
     // calc(50% + (sign(1em - 10px) * 10%)) cannot be evaluated eagerly because font relative units are not yet known at parse time.
-    ["rgb(calc(50% + (sign(1em - 10px) * 10%)), 0%, 0%, 50%)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0% 0% / 50%)"],
-    ["rgba(calc(50% + (sign(1em - 10px) * 10%)), 0%, 0%, 50%)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0% 0% / 50%)"],
+    ["rgb(calc(50% + (sign(1em - 10px) * 10%)), 0%, 0%, 50%)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0 0 / 0.5)"],
+    ["rgba(calc(50% + (sign(1em - 10px) * 10%)), 0%, 0%, 50%)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0 0 / 0.5)"],
     ["rgb(calc(50 + (sign(1em - 10px) * 10)), 0, 0, 0.5)", "rgb(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
     ["rgba(calc(50 + (sign(1em - 10px) * 10)), 0, 0, 0.5)", "rgb(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
-    ["rgb(0%, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "rgb(0% 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
-    ["rgba(0%, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "rgb(0% 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
+    ["rgb(0%, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "rgb(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
+    ["rgba(0%, 0%, 0%, calc(50% + (sign(1em - 10px) * 10%)))", "rgb(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
     ["rgb(0, 0, 0, calc(0.75 + (sign(1em - 10px) * 0.1)))", "rgb(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
     ["rgba(0, 0, 0, calc(0.75 + (sign(1em - 10px) * 0.1)))", "rgb(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
 
-    ["rgb(calc(50% + (sign(1em - 10px) * 10%)) 0% 0% / 50%)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0% 0% / 50%)"],
-    ["rgba(calc(50% + (sign(1em - 10px) * 10%)) 0% 0% / 50%)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0% 0% / 50%)"],
+    ["rgb(calc(50% + (sign(1em - 10px) * 10%)) 0% 0% / 50%)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0 0 / 0.5)"],
+    ["rgba(calc(50% + (sign(1em - 10px) * 10%)) 0% 0% / 50%)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0 0 / 0.5)"],
     ["rgb(calc(50 + (sign(1em - 10px) * 10)) 0 0 / 0.5)", "rgb(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
     ["rgba(calc(50 + (sign(1em - 10px) * 10)) 0 0 / 0.5)", "rgb(calc(50 + (10 * sign(1em - 10px))) 0 0 / 0.5)"],
-    ["rgb(0% 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "rgb(0% 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
-    ["rgba(0% 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "rgb(0% 0% 0% / calc(50% + (10% * sign(1em - 10px))))"],
+    ["rgb(0% 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "rgb(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
+    ["rgba(0% 0% 0% / calc(50% + (sign(1em - 10px) * 10%)))", "rgb(0 0 0 / calc(50% + (10% * sign(1em - 10px))))"],
     ["rgb(0 0 0 / calc(0.75 + (sign(1em - 10px) * 0.1)))", "rgb(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
     ["rgba(0 0 0 / calc(0.75 + (sign(1em - 10px) * 0.1)))", "rgb(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
 
-    ["rgba(calc(50% + (sign(1em - 10px) * 10%)) 0 0% / 0.5)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0 0% / 0.5)"],
-    ["rgba(0% 0 0% / calc(0.75 + (sign(1em - 10px) * 0.1)))", "rgb(0% 0 0% / calc(0.75 + (0.1 * sign(1em - 10px))))"],
+    ["rgba(calc(50% + (sign(1em - 10px) * 10%)) 0 0% / 0.5)", "rgb(calc(50% + (10% * sign(1em - 10px))) 0 0 / 0.5)"],
+    ["rgba(0% 0 0% / calc(0.75 + (sign(1em - 10px) * 0.1)))", "rgb(0 0 0 / calc(0.75 + (0.1 * sign(1em - 10px))))"],
+
+    ["rgba(calc(50 + (sign(1em - 10px) * 10)) 400 -400 / 0.5)", "rgb(calc(50 + (10 * sign(1em - 10px))) 255 0 / 0.5)"],
+    ["rgba(calc(50% + (sign(1em - 10px) * 10%)) 400% -400% / 0.5)", "rgb(calc(50% + (10% * sign(1em - 10px))) 255 0 / 0.5)"],
+    ["rgba(calc(50 + (sign(1em - 10px) * 10)), 400, -400, 0.5)", "rgb(calc(50 + (10 * sign(1em - 10px))) 255 0 / 0.5)"],
+    ["rgba(calc(50% + (sign(1em - 10px) * 10%)), 400%, -400%, 0.5)", "rgb(calc(50% + (10% * sign(1em - 10px))) 255 0 / 0.5)"],
 ];
 
 for (const test of tests) {
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/at-container-snapped-parsing.html b/tests/wpt/tests/css/css-conditional/container-queries/at-container-snapped-parsing.html
new file mode 100644
index 00000000000..490c416a1ed
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/at-container-snapped-parsing.html
@@ -0,0 +1,80 @@
+<!DOCTYPE html>
+<title>CSS Conditional Test: @container snapped query parsing</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<div style="container-name:name;container-type:scroll-state">
+  <main id="main"></main>
+</div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  function cleanup_main() {
+    while (main.firstChild)
+      main.firstChild.remove();
+  }
+
+  function set_style(text) {
+    let style = document.createElement('style');
+    style.innerText = text;
+    main.append(style);
+    return style;
+  }
+
+  function test_rule_valid(query) {
+    test(t => {
+      t.add_cleanup(cleanup_main);
+      let style = set_style(`@container ${query} {}`);
+      assert_equals(style.sheet.rules.length, 1);
+    }, query);
+  }
+
+  function test_condition_invalid(condition) {
+    test(t => {
+      t.add_cleanup(cleanup_main);
+      let style = set_style(`@container name ${condition} {}`);
+      assert_equals(style.sheet.rules.length, 0);
+    }, condition);
+  }
+
+  // Tests that 1) the condition parses, and 2) is either "unknown" or not, as
+  // specified.
+  function test_condition_valid(condition, unknown) {
+    test(t => {
+      t.add_cleanup(cleanup_main);
+      let style = set_style(`
+        @container name ${condition} {}
+        @container name (${condition}) or (not (${condition})) { main { --match:true; } }
+      `);
+      assert_equals(style.sheet.rules.length, 2);
+      const expected = unknown ? '' : 'true';
+      assert_equals(getComputedStyle(main).getPropertyValue('--match'), expected);
+    }, condition);
+  }
+
+  function test_condition_known(condition) {
+    test_condition_valid(condition, false /* unknown */);
+  }
+
+  function test_condition_unknown(condition) {
+    test_condition_valid(condition, true /* unknown */);
+  }
+
+  test_condition_known('scroll-state(snapped)');
+  test_condition_known('scroll-state(snapped: x)');
+  test_condition_known('scroll-state(snapped: y)');
+  test_condition_known('scroll-state(snapped: none)');
+  test_condition_known('scroll-state(snapped: block)');
+  test_condition_known('scroll-state(snapped: inline)');
+  test_condition_known('(scroll-state(snapped: block))');
+  test_condition_known('scroll-state((snapped: inline))');
+  test_condition_known('scroll-state(not ((snapped: inline) and (snapped: block)))');
+  test_condition_known('scroll-state((snapped: x) or (snapped: y))');
+
+  test_condition_unknown('scroll-state(snapped: auto)');
+  test_condition_unknown('scroll-state(snapped: true)');
+  test_condition_unknown('scroll-state(style(snapped: inline))');
+  test_condition_unknown('style(scroll-state(snapped: inline))');
+  test_condition_unknown('scroll-state(snapped:)');
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/at-container-snapped-serialization.html b/tests/wpt/tests/css/css-conditional/container-queries/at-container-snapped-serialization.html
new file mode 100644
index 00000000000..59cc3d37f4f
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/at-container-snapped-serialization.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>CSS Container Queries: scroll-state(snapped) conditionText serialization</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-queries">
+<link rel="help" href="https://drafts.csswg.org/cssom/#serialize-a-css-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<style id="testSheet">
+  @container scroll-state(        snapped:inline) { }
+  @container scroll-STate(snapped:    ) { }
+  @container scroll-STate(snapped) { }
+  @container  scroll-state(  ( snapped: INLINE) OR ( SNAPPED: BlOCK  ) ) { }
+  @container scroll-state (snapped: inline) { }
+</style>
+<script>
+  setup(() => {
+    assert_implements_container_queries();
+    assert_equals(testSheet.sheet.cssRules.length, 5);
+  });
+
+  const tests = [
+      ["scroll-state(snapped: inline)", "Normalize spaces"],
+      ["scroll-STate(snapped:    )", "No value - invalid, serializes as <general-enclosed>"],
+      ["scroll-state(snapped)", "Boolean context"],
+      ["scroll-state((snapped: inline) or (snapped: block))", "Logical with 'or'"],
+      ["scroll-state (snapped: inline)", "Not a scroll-state function with space before '('"]
+  ].map((e, i) => [testSheet.sheet.cssRules[i], ...e]);
+
+  tests.forEach((t) => {
+    test(() => assert_equals(t[0].conditionText, t[1]), t[2]);
+  });
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/at-container-stuck-parsing.html b/tests/wpt/tests/css/css-conditional/container-queries/at-container-stuck-parsing.html
new file mode 100644
index 00000000000..e2d305cbb82
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/at-container-stuck-parsing.html
@@ -0,0 +1,85 @@
+<!DOCTYPE html>
+<title>CSS Conditional Test: @container stuck query parsing</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<div style="container-name:name;container-type:scroll-state">
+  <main id="main"></main>
+</div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  function cleanup_main() {
+    while (main.firstChild)
+      main.firstChild.remove();
+  }
+
+  function set_style(text) {
+    let style = document.createElement('style');
+    style.innerText = text;
+    main.append(style);
+    return style;
+  }
+
+  function test_rule_valid(query) {
+    test(t => {
+      t.add_cleanup(cleanup_main);
+      let style = set_style(`@container ${query} {}`);
+      assert_equals(style.sheet.rules.length, 1);
+    }, query);
+  }
+
+  function test_condition_invalid(condition) {
+    test(t => {
+      t.add_cleanup(cleanup_main);
+      let style = set_style(`@container name ${condition} {}`);
+      assert_equals(style.sheet.rules.length, 0);
+    }, condition);
+  }
+
+  // Tests that 1) the condition parses, and 2) is either "unknown" or not, as
+  // specified.
+  function test_condition_valid(condition, unknown) {
+    test(t => {
+      t.add_cleanup(cleanup_main);
+      let style = set_style(`
+        @container name ${condition} {}
+        @container name (${condition}) or (not (${condition})) { main { --match:true; } }
+      `);
+      assert_equals(style.sheet.rules.length, 2);
+      const expected = unknown ? '' : 'true';
+      assert_equals(getComputedStyle(main).getPropertyValue('--match'), expected);
+    }, condition);
+  }
+
+  function test_condition_known(condition) {
+    test_condition_valid(condition, false /* unknown */);
+  }
+
+  function test_condition_unknown(condition) {
+    test_condition_valid(condition, true /* unknown */);
+  }
+
+  test_condition_known('scroll-state(stuck)');
+  test_condition_known('scroll-state(stuck: none)');
+  test_condition_known('scroll-state(stuck: top)');
+  test_condition_known('scroll-state(stuck: left)');
+  test_condition_known('scroll-state(stuck: bottom)');
+  test_condition_known('scroll-state(stuck: right)');
+  test_condition_known('scroll-state(stuck: block-start)');
+  test_condition_known('scroll-state(stuck: block-end)');
+  test_condition_known('scroll-state(stuck: inline-start)');
+  test_condition_known('scroll-state(stuck: inline-end)');
+  test_condition_known('(scroll-state(stuck: top))');
+  test_condition_known('scroll-state((stuck: top))');
+  test_condition_known('scroll-state(not ((stuck: top) and (stuck: bottom)))');
+  test_condition_known('scroll-state((stuck: right) or (stuck: left))');
+
+  test_condition_unknown('scroll-state(stuck: auto)');
+  test_condition_unknown('scroll-state(stuck: true)');
+  test_condition_unknown('scroll-state(style(stuck: top))');
+  test_condition_unknown('style(scroll-state(stuck: top))');
+  test_condition_unknown('scroll-state(stuck:)');
+  test_condition_unknown('scroll-state(--foo)');
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/at-container-stuck-serialization.html b/tests/wpt/tests/css/css-conditional/container-queries/at-container-stuck-serialization.html
new file mode 100644
index 00000000000..d5abede45c2
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/at-container-stuck-serialization.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>CSS Container Queries: scroll-state(stuck) conditionText serialization</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-queries">
+<link rel="help" href="https://drafts.csswg.org/cssom/#serialize-a-css-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<style id="testSheet">
+  @container scroll-state(        stuck:top) { }
+  @container scroll-STate(stuck:    ) { }
+  @container scroll-STate(stuck) { }
+  @container  scroll-state(  ( stuck: BOTTOM) OR ( STUCK: inline-START  ) ) { }
+  @container scroll-state (stuck: top) { }
+</style>
+<script>
+  setup(() => {
+    assert_implements_container_queries();
+    assert_equals(testSheet.sheet.cssRules.length, 5);
+  });
+
+  const tests = [
+      ["scroll-state(stuck: top)", "Normalize spaces"],
+      ["scroll-STate(stuck:    )", "No value - invalid, serializes as <general-enclosed>"],
+      ["scroll-state(stuck)", "Boolean context"],
+      ["scroll-state((stuck: bottom) or (stuck: inline-start))", "Logical with 'or'"],
+      ["scroll-state (stuck: top)", "Not a scroll-state function with space before '('"]
+  ].map((e, i) => [testSheet.sheet.cssRules[i], ...e]);
+
+  tests.forEach((t) => {
+    test(() => assert_equals(t[0].conditionText, t[1]), t[2]);
+  });
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-computed.html b/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-computed.html
new file mode 100644
index 00000000000..4e80712beab
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-computed.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Conditional Test: Computed values of container-type with scroll-state</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-type">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<div id="target"></div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  test_computed_value('container-type', 'scroll-state');
+  test_computed_value('container-type', 'scroll-state size', 'size scroll-state');
+  test_computed_value('container-type', 'inline-size scroll-state');
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-containment.html b/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-containment.html
new file mode 100644
index 00000000000..cc1af5a08eb
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-containment.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<title>CSS Container Queries: container type scroll-state</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-type">
+<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/6402#issuecomment-1812973013">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<style>
+  body { margin: 0; }
+  #container {
+    margin-top: 100px;
+    container-type: scroll-state;
+    width: fit-content;
+  }
+  #child {
+    margin-top: 100px;
+    width: 100px;
+    height: 100px;
+  }
+</style>
+<div id="container">
+  <div id="child">Non-zero-content</div>
+</div>
+<script>
+  test(() => {
+    assert_equals(container.offsetWidth, 100, "Intrinsically sized width");
+    assert_equals(container.offsetHeight, 100, "Intrinsically sized height");
+  }, "container-type:scroll-state does not apply size containment");
+
+  test(() => {
+    assert_equals(child.getBoundingClientRect().y, 100,
+                  "#container and #child margins collapsed");
+  }, "container-type:scroll-state does not establish a formatting context");
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-parsing.html b/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-parsing.html
new file mode 100644
index 00000000000..7f3779bc39d
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/container-type-scroll-state-parsing.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Conditional Test: Parsing of container-type with scroll-state</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-type">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<div id="target"></div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  test_valid_value('container-type', 'scroll-state');
+  test_valid_value('container-type', 'size scroll-state');
+  test_valid_value('container-type', 'scroll-state inline-size', 'inline-size scroll-state');
+
+  test_invalid_value('container-type', 'scroll-state scroll-state');
+  test_invalid_value('container-type', 'normal scroll-state');
+  test_invalid_value('container-type', 'inline-size block-size scroll-state');
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-initially-snapped.html b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-initially-snapped.html
new file mode 100644
index 00000000000..64a171c361e
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-initially-snapped.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<title>@container: scroll-state(snapped) matching for initial rendering</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<script src="/css/css-transitions/support/helper.js"></script>
+<style>
+  :root {
+    scroll-snap-type: block mandatory;
+  }
+  body {
+    margin: 0;
+  }
+  #filler-before {
+    height: 200px;
+  }
+  #filler-after {
+    height: 10000px;
+  }
+  #snapped {
+    container-name: initially-snapped;
+    container-type: scroll-state;
+    scroll-snap-align: start;
+    width: 100px;
+    height: 100px;
+    background: teal;
+  }
+
+  @container initially-snapped scroll-state(snapped: block) {
+    span { --snapped: yes }
+  }
+</style>
+<div id="filler-before"></div>
+<div id="snapped">
+  <span id="target">My container is snapped</span>
+</div>
+<div id="filler-after"></div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  promise_test(async t => {
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "yes");
+    assert_equals(document.documentElement.scrollTop, 200);
+  }, "Check that scroll-state(snapped: block) matches");
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-initially-stuck.html b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-initially-stuck.html
new file mode 100644
index 00000000000..c0d59b61e76
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-initially-stuck.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<title>@container: scroll-state(stuck) matching for initial rendering</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<script src="/css/css-transitions/support/helper.js"></script>
+<style>
+  #filler {
+    height: 10000px;
+  }
+  #stuck {
+    container-name: initially-stuck;
+    container-type: scroll-state;
+    position: sticky;
+    bottom: 0;
+  }
+
+  @container initially-stuck scroll-state(stuck: bottom) {
+    span { --stuck: yes }
+  }
+</style>
+<div id="filler"></div>
+<div id="stuck">
+  <span id="target">My container is stuck</span>
+</div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  promise_test(async t => {
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--stuck"), "yes");
+  }, "Check that scroll-state(stuck: bottom) matches");
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-change.html b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-change.html
new file mode 100644
index 00000000000..6e9843b8b75
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-change.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<title>@container: scroll-state(snapped) changed after scroll</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<script src="/css/css-transitions/support/helper.js"></script>
+<style>
+  :root {
+    scroll-snap-type: block mandatory;
+  }
+  body {
+    margin: 0;
+  }
+  #filler {
+    height: 10000px;
+  }
+  .snapped {
+    container-type: scroll-state;
+    scroll-snap-align: start;
+    width: 100px;
+    height: 100px;
+    margin-bottom: 100px;
+    background: teal;
+  }
+
+  @container scroll-state(snapped: block) {
+    span { --snapped: yes }
+  }
+</style>
+<div class="snapped">
+  <span id="target1"></span>
+</div>
+<div class="snapped">
+  <span id="target2"></span>
+</div>
+<div id="filler"></div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  promise_test(async t => {
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target1).getPropertyValue("--snapped"), "yes");
+    assert_equals(getComputedStyle(target2).getPropertyValue("--snapped"), "");
+    assert_equals(document.documentElement.scrollTop, 0);
+  }, "Check that scroll-state(snapped: block) matches on #target1 before scroll");
+
+  promise_test(async t => {
+    document.documentElement.scrollTop = 300;
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target1).getPropertyValue("--snapped"), "");
+    assert_equals(getComputedStyle(target2).getPropertyValue("--snapped"), "yes");
+    assert_equals(document.documentElement.scrollTop, 200);
+  }, "Check that scroll-state(snapped: block) matches on #target2 after scroll");
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html
new file mode 100644
index 00000000000..556e4c2445b
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-container-type-change.html
@@ -0,0 +1,84 @@
+<!DOCTYPE html>
+<title>@container: scroll-state(snapped) property changes</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<script src="/css/css-transitions/support/helper.js"></script>
+<style>
+  :root {
+    scroll-snap-type: block mandatory;
+  }
+  body {
+    margin: 0;
+  }
+  #filler-before {
+    height: 200px;
+  }
+  #filler-after {
+    height: 10000px;
+  }
+  #snapped {
+    container-type: scroll-state;
+    scroll-snap-align: start;
+    width: 100px;
+    height: 100px;
+    background: teal;
+  }
+  span {
+    --snapped: no;
+    @container scroll-state(snapped) {
+      --snapped: yes;
+    }
+  }
+</style>
+<div id="filler-before"></div>
+<div id="snapped">
+  <span id="target">My container is snapped</span>
+</div>
+<div id="filler-after"></div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  promise_test(async t => {
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "yes");
+  }, "Check scroll-state(snapped) initially matching");
+
+  promise_test(async t => {
+    t.add_cleanup(async () => snapped.style.scrollSnapAlign = "");
+    snapped.style.scrollSnapAlign = "initial";
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "no",
+                  "scroll-snap-align removed");
+    snapped.style.scrollSnapAlign = "";
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "yes",
+                  "scroll-snap-align re-added");
+  }, "Check scroll-state(snapped) not matching when scroll-snap-align is removed");
+
+  promise_test(async t => {
+    t.add_cleanup(async () => document.documentElement.style.scrollSnapType = "");
+    document.documentElement.style.scrollSnapType = "initial";
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "no",
+                  "scroll-snap-type removed");
+    document.documentElement.style.scrollSnapType = "";
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "yes",
+                  "scroll-snap-type re-added");
+  }, "Check scroll-state(snapped) not matching when scroll-snap-type is removed");
+
+  promise_test(async t => {
+    t.add_cleanup(async () => snapped.style.containerType = "");
+    snapped.style.containerType = "initial";
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "no",
+                  "container-type removed");
+    snapped.style.containerType = "";
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "yes",
+                  "container-type re-added");
+  }, "Check scroll-state(snapped) not matching when container-type is removed");
+
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-snap-changing.html b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-snap-changing.html
new file mode 100644
index 00000000000..161c2e1368d
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-snap-changing.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<title>@container: scroll-state(snapped) matches for scrollchanging</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule">
+<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<script src="/css/css-transitions/support/helper.js"></script>
+<style>
+  html { scroll-snap-type: block mandatory; }
+  body { margin: 0; }
+  #filler { height: 10000px; }
+  .snapped {
+    container-type: scroll-state;
+    scroll-snap-align: start;
+    width: 100px;
+    height: 100px;
+  }
+  @container scroll-state(snapped: block) {
+    span { --snapped: true; }
+  }
+</style>
+<div id="snapped1" class="snapped">
+  <span id="target1"></span>
+</div>
+<div id="snapped2" class="snapped">
+  <span id="target2"></span>
+</div>
+<div id="filler"></div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  let changeTarget;
+  let changingTarget;
+
+  window.addEventListener("scrollsnapchange", e => changeTarget = e.snapTargetBlock);
+  window.addEventListener("scrollsnapchanging", e => changingTarget = e.snapTargetBlock);
+
+  promise_test(async t => {
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target1).getPropertyValue("--snapped"), "true");
+    assert_equals(getComputedStyle(target2).getPropertyValue("--snapped"), "");
+    assert_equals(changeTarget, snapped1, "snapchange has been called for #snapped1");
+    assert_equals(changingTarget, undefined, "snapchanging has not been called");
+    assert_equals(window.scrollY, 0);
+  }, "Initially snapped to #snapped1, scroll-state() styling #target1")
+
+  promise_test(async t => {
+    await new test_driver.Actions()
+        .addPointer("pointer1", "touch")
+        .pointerMove(0, 200, {origin: "viewport"})
+        .pointerDown()
+        .pause(50)
+        .pointerMove(0, 0, {origin: "viewport"})
+        .pause(50)
+        .send();
+    assert_equals(changeTarget, snapped1, "snapchange has not been called for #snapped2");
+    assert_equals(changingTarget, snapped2, "snapchanging has been called for #snapped2");
+    assert_equals(getComputedStyle(target1).getPropertyValue("--snapped"), "",
+                  "#target1 not matching scroll-state(snapped) while scrolling");
+    assert_equals(getComputedStyle(target2).getPropertyValue("--snapped"), "true",
+                  "#target2 matching scroll-state(snapped) while scrolling");
+  }, "scroll-state(snapped) matching #snapped2 while scrolling");
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-wm.html b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-wm.html
new file mode 100644
index 00000000000..b6703e81142
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/scroll-state-snapped-wm.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<title>@container: scroll-state(snapped) matching for writing-mode</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
+<script src="/css/css-transitions/support/helper.js"></script>
+<style>
+  :root {
+    scroll-snap-type: block mandatory;
+  }
+  body {
+    margin: 0;
+  }
+  #filler-before {
+    height: 200px;
+  }
+  #filler-after {
+    height: 10000px;
+  }
+  #snapped {
+    writing-mode: vertical-lr;
+    container-name: initially-snapped;
+    container-type: scroll-state;
+    scroll-snap-align: start;
+    width: 100px;
+    height: 100px;
+    background: teal;
+  }
+
+  @container initially-snapped scroll-state(snapped: block) {
+    span { --snapped-logical: block }
+  }
+  @container initially-snapped scroll-state(snapped: inline) {
+    span { --snapped-logical: inline }
+  }
+  @container initially-snapped scroll-state(snapped: x) {
+    span { --snapped-physical: x }
+  }
+  @container initially-snapped scroll-state(snapped: y) {
+    span { --snapped-physical: y }
+  }
+</style>
+<div id="filler-before"></div>
+<div id="snapped">
+  <span id="target">My container is snapped</span>
+</div>
+<div id="filler-after"></div>
+<script>
+  setup(() => assert_implements_container_queries());
+
+  promise_test(async t => {
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped-logical"), "inline");
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped-physical"), "y");
+    assert_equals(document.documentElement.scrollTop, 200);
+  }, "Check scroll-state(snapped) matching for vertical writing-mode");
+
+  promise_test(async t => {
+    snapped.style.writingMode = "horizontal-tb";
+    await waitForAnimationFrames(2);
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped-logical"), "block");
+    assert_equals(getComputedStyle(target).getPropertyValue("--snapped-physical"), "y");
+    assert_equals(document.documentElement.scrollTop, 200);
+  }, "Check scroll-state(snapped) matching dynamically changing to horizontal writing-mode");
+
+</script>
diff --git a/tests/wpt/tests/css/css-conditional/container-queries/style-query-document-element.html b/tests/wpt/tests/css/css-conditional/container-queries/style-query-document-element.html
new file mode 100644
index 00000000000..ff370a9b26d
--- /dev/null
+++ b/tests/wpt/tests/css/css-conditional/container-queries/style-query-document-element.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<title>CSS Container Queries Test: style query against document element</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-queries">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/cq-testcommon.js"></script>
+<style>
+  html {
+    --foo: bar;
+  }
+  @container style(--foo: bar) {
+     body { color: green; }
+  }
+</style>
+<body id="body">
+<script>
+  setup(() => assert_implements_container_queries());
+
+  test(() => {
+    assert_equals(getComputedStyle(body).color, "rgb(0, 128, 0)");
+  }, "style query should evaluate to true");
+</script>
+
diff --git a/tests/wpt/tests/css/css-display/parsing/WEB_FEATURES.yml b/tests/wpt/tests/css/css-display/parsing/WEB_FEATURES.yml
new file mode 100644
index 00000000000..616accbe0a7
--- /dev/null
+++ b/tests/wpt/tests/css/css-display/parsing/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: two-value-display
+  files: "**"
diff --git a/tests/wpt/tests/css/css-env/env-parsing.html b/tests/wpt/tests/css/css-env/env-parsing.html
new file mode 100644
index 00000000000..d4f66248dc3
--- /dev/null
+++ b/tests/wpt/tests/css/css-env/env-parsing.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Environment Variables: env() parsing</title>
+<link rel="help" href="https://drafts.csswg.org/css-env/">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<div id="target"></div>
+
+<script>
+
+test_valid_value('width', 'env(safe-area-inset-top)');
+test_valid_value('width', 'env(safe-area-inset-top,)');
+test_valid_value('width', 'env(safe-area-inset-top, )');
+
+test_invalid_value('width', 'env(safe-area-inset-top ())');
+test_invalid_value('width', 'env(safe-area-inset-top () )');
+test_invalid_value('width', 'env(safe-area-inset-top() )');
+test_invalid_value('width', 'env(safe-area-inset-top (),)');
+test_invalid_value('width', 'env(safe-area-inset-top(),)');
+
+</script>
diff --git a/tests/wpt/tests/css/css-flexbox/aspect-ratio-intrinsic-size-008.html b/tests/wpt/tests/css/css-flexbox/aspect-ratio-intrinsic-size-008.html
new file mode 100644
index 00000000000..9e5b4e1c0f9
--- /dev/null
+++ b/tests/wpt/tests/css/css-flexbox/aspect-ratio-intrinsic-size-008.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
+<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#valdef-align-items-stretch">
+<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#intrinsic-sizes">
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<meta name="assert" content="This checks that a flex item with an aspect-ratio transfers its size when it also has stretch alignment.">
+
+<p>Test passes if there is a filled green square.</p>
+<div style="display: inline-flex; height: 100px; background: green;">
+  <div style="padding: 3px; border: 7px solid green; margin: 10px;
+              aspect-ratio: 1/1;"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-flexbox/aspect-ratio-intrinsic-size-009.html b/tests/wpt/tests/css/css-flexbox/aspect-ratio-intrinsic-size-009.html
new file mode 100644
index 00000000000..00701b9a019
--- /dev/null
+++ b/tests/wpt/tests/css/css-flexbox/aspect-ratio-intrinsic-size-009.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
+<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#valdef-align-items-stretch">
+<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#intrinsic-sizes">
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<meta name="assert" content="This checks that a flex item with an aspect-ratio transfers its size when it also has stretch alignment.">
+
+<p>Test passes if there is a filled green square.</p>
+<div style="display: inline-flex; height: 100px; background: green;">
+  <div style="padding: 3px; border: 7px solid green; margin: 10px;
+              aspect-ratio: 1/1; writing-mode: vertical-rl;"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html b/tests/wpt/tests/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html
index d7116868d75..1f11f3e8095 100644
--- a/tests/wpt/tests/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html
+++ b/tests/wpt/tests/css/css-flexbox/flex-one-sets-flex-basis-to-zero-px.html
@@ -76,13 +76,15 @@ and 'writing-mode' value works properly.">
   <div class="flex-half-one-zero-percent" data-expected-height="14">Flex item with flex: 0.5 1 0%</div>
 </div>
 
+<!-- Following comment follows current spec to the letter, but it is not web
+     compatible. The expectation is for what everyone is shipping. -->
 <!-- A flex-grow of 0 would size the container to the flex base size of the item (0px),
      and a flex-grow of 1 would size it to the max-content contribution of the item (14px).
      Therefore, a flew-grow of 0.5 sizes the container to the average, 7px.
      And then the item grows to fill half of that, 3.5px.
      Note that Gecko, Blink and WebKit use the flex-basis instead. -->
 <div class="flexbox column">
-  <div class="flex-half-one-zero-px" data-expected-height="4">Flex item with flex: 0.5 1 0px</div>
+  <div class="flex-half-one-zero-px" data-expected-height="0">Flex item with flex: 0.5 1 0px</div>
 </div>
 
 <div class="flexbox column">
@@ -93,10 +95,12 @@ and 'writing-mode' value works properly.">
   <div class="flex-one-one-zero-percent" data-expected-height="14">Flex item with flex: 1 1 0%</div>
 </div>
 
+<!-- Following comment follows current spec to the letter, but it is not web
+     compatible. The expectation is for what everyone is shipping. -->
 <!-- flex-grow is >= 1, so the flex container is sized to the max-content contribution of the item.
      Note that Gecko, Blink and WebKit use the flex-basis instead. -->
 <div class="flexbox column">
-  <div class="flex-one-one-zero-px" data-expected-height="14">Flex item with flex: 1 1 0px</div>
+  <div class="flex-one-one-zero-px" data-expected-height="0">Flex item with flex: 1 1 0px</div>
 </div>
 
 <div class="flexbox column vertical">
@@ -119,13 +123,15 @@ and 'writing-mode' value works properly.">
   <div class="flex-half-one-zero-percent" data-expected-width="14">Flex item with flex: 0.5 1 0%</div>
 </div>
 
+<!-- Following comment follows current spec to the letter, but it is not web
+     compatible. The expectation is for what everyone is shipping. -->
 <!-- A flex-grow of 0 would size the container to the flex base size of the item (0px),
      and a flex-grow of 1 would size it to the max-content contribution of the item (14px).
      Therefore, a flew-grow of 0.5 sizes the container to the average, 7px.
      And then the item grows to fill half of that, 3.5px.
      Note that Gecko, Blink and WebKit use the flex-basis instead. -->
 <div class="flexbox column vertical">
-  <div class="flex-half-one-zero-px" data-expected-width="4">Flex item with flex: 0.5 1 0px</div>
+  <div class="flex-half-one-zero-px" data-expected-width="0">Flex item with flex: 0.5 1 0px</div>
 </div>
 
 <div class="flexbox column vertical">
@@ -136,10 +142,12 @@ and 'writing-mode' value works properly.">
   <div class="flex-one-one-zero-percent" data-expected-width="14">Flex item with flex: 1 1 0%</div>
 </div>
 
+<!-- Following comment follows current spec to the letter, but it is not web
+     compatible. The expectation is for what everyone is shipping. -->
 <!-- flex-grow is >= 1, so the flex container is sized to the max-content contribution of the item.
      Note that Gecko, Blink and WebKit use the flex-basis instead. -->
 <div class="flexbox column vertical">
-  <div class="flex-one-one-zero-px" data-expected-width="14">Flex item with flex: 1 1 0px</div>
+  <div class="flex-one-one-zero-px" data-expected-width="0">Flex item with flex: 1 1 0px</div>
 </div>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-flexbox/justify-content-sideways-001.html b/tests/wpt/tests/css/css-flexbox/justify-content-sideways-001.html
new file mode 100644
index 00000000000..dc91f049979
--- /dev/null
+++ b/tests/wpt/tests/css/css-flexbox/justify-content-sideways-001.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<link rel="author" title="David Grogan" href="mailto:dgrogan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-align/#align-justify-content">
+<link rel="help" href="https://drafts.csswg.org/css-writing-modes/#block-flow">
+<meta name="assert" content="column flexboxes in sideways-lr writing mode obey justify-content:right">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<style>
+#reference-overlapped-red {
+  position: absolute;
+  background-color: red;
+  width: 100px;
+  height: 100px;
+  z-index: -1;
+}
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div id=reference-overlapped-red></div>
+<div style="display: flex; flex-direction: column; width: 200px; margin-left: -100px; writing-mode: sideways-lr; justify-content: right;">
+  <div style="height: 100px; width: 100px; background: green;"></div>
+</div>
diff --git a/tests/wpt/tests/css/css-fonts/font-face-sign-function.html b/tests/wpt/tests/css/css-fonts/font-face-sign-function.html
new file mode 100644
index 00000000000..28c958c7ee7
--- /dev/null
+++ b/tests/wpt/tests/css/css-fonts/font-face-sign-function.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Test: Support for sign function in @font-face</title>
+<link rel="match" href="font-face-weight-auto-static-ref.html">
+<link rel="help" href="https://www.w3.org/TR/css-fonts-4/#font-prop-desc" />
+<style>
+  :root {
+    font-size: 16px;
+  }
+  @font-face {
+    font-family: "Lato";
+    src: url('support/fonts/Lato-Medium.ttf') format('truetype');
+    font-display: swap;
+    font-weight: calc(sign(1rem - 1px) * 400);
+    font-width: calc(sign(1rem - 1px) * 100%);
+  }
+
+  .test {
+    font-family: "Lato";
+    font-size: 3em;
+    font-weight: bold;
+  }
+</style>
+
+<p class="test">text</p>
diff --git a/tests/wpt/tests/css/css-fonts/font-size-sign-function.html b/tests/wpt/tests/css/css-fonts/font-size-sign-function.html
new file mode 100644
index 00000000000..a4c58a45c56
--- /dev/null
+++ b/tests/wpt/tests/css/css-fonts/font-size-sign-function.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Fonts test: font-size with CSS sign() function</title>
+<link rel="help" href="https://drafts.csswg.org/css-fonts/#font-size-prop">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+:root {
+  font-size: 16px;
+}
+</style>
+<div id="target"></div>
+<script>
+  test_computed_value("font-size", "calc(sign(1rem - 1px) * 100%)", "16px");
+</script>
diff --git a/tests/wpt/tests/css/css-fonts/font-style-sign-function.html b/tests/wpt/tests/css/css-fonts/font-style-sign-function.html
new file mode 100644
index 00000000000..977991e365e
--- /dev/null
+++ b/tests/wpt/tests/css/css-fonts/font-style-sign-function.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Fonts test: font-style with CSS sign() function</title>
+<link rel="help" href="https://drafts.csswg.org/css-fonts/#font-style-prop">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+:root {
+  font-size: 16px;
+}
+</style>
+<div id="target"></div>
+<script>
+  test_computed_value("font-style", "oblique calc(sign(1rem - 1px) * 10deg)", "oblique 10deg");
+</script>
diff --git a/tests/wpt/tests/css/css-fonts/variations/at-font-face-descriptors.html b/tests/wpt/tests/css/css-fonts/variations/at-font-face-descriptors.html
index 1935422d7c2..bb41c24ad07 100644
--- a/tests/wpt/tests/css/css-fonts/variations/at-font-face-descriptors.html
+++ b/tests/wpt/tests/css/css-fonts/variations/at-font-face-descriptors.html
@@ -78,7 +78,7 @@
             { value: "calc(100.5)",             isValid: true,  expectedValue: "100.5", description: "Simple calc value" },
             { value: "calc(1001)",              isValid: true, description: "Out-of-range simple calc value (should be clamped)" },
             { value: "calc(100.5*3 + 50.5)",    isValid: true,  expectedValue: "352", description: "Valid calc expression" },
-            { value: "calc(100.5*3 + 800)",     isValid: true, description: "Valid calc expression with out-of-range value (should be clamped)" },
+            { value: "calc(100.5*3 + 800)",     isValid: true, description: "Valid calc expression with out-of-range value (should be clamped)", expectedValue: "calc(1101.5)", },
             { value: "calc(100.5px + 50.5px)",  isValid: false, description: "Valid calc expression with units" },
 
             // Value range
diff --git a/tests/wpt/tests/css/css-inline/initial-letter/initial-letter-sign-function.html b/tests/wpt/tests/css/css-inline/initial-letter/initial-letter-sign-function.html
new file mode 100644
index 00000000000..118ee2d0e1a
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/initial-letter/initial-letter-sign-function.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Inline test: inline-letter with CSS sign() function</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline/#sizing-drop-initials">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+:root {
+  font-size: 16px;
+}
+</style>
+<div id="target"></div>
+<script>
+  test_computed_value("initial-letter", "calc(sign(1rem - 1px) * 1.5)", "1.5");
+</script>
+
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-003-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-003-ref.html
index 8c14770034a..c192242a81d 100644
--- a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-003-ref.html
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-003-ref.html
@@ -15,7 +15,7 @@
 .float {
   float: left;
   width: 100px;
-  height: 100px;
+  height: 90px;
   background: yellow;
 }
 .clear { clear: both; }
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-003.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-003.html
index e04d18ec109..cfb0c14fb65 100644
--- a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-003.html
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-float-clear-br-003.html
@@ -2,7 +2,7 @@
 <title>text-box-trim does not interfere with clearance less than trim amount</title>
 <link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-trim">
 <link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-edge">
-<link rel="match" href="text-box-trim-float-clear-br-002-ref.html">
+<link rel="match" href="text-box-trim-float-clear-br-003-ref.html">
 <style>
 @import "support/MetricsTestFont.css";
 
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ignore-nested-text-box-edge-ref.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ignore-nested-text-box-edge-ref.html
new file mode 100644
index 00000000000..cfbf985055d
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ignore-nested-text-box-edge-ref.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<link rel="stylesheet" href="/fonts/ahem.css">
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font: 50px/1 Ahem;
+}
+</style>
+<div class="spacer"></div>
+<div class="target">ABC</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ignore-nested-text-box-edge.html b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ignore-nested-text-box-edge.html
new file mode 100644
index 00000000000..5266274600e
--- /dev/null
+++ b/tests/wpt/tests/css/css-inline/text-box-trim/text-box-trim-ignore-nested-text-box-edge.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>Consult the block container requesting the trim for text-box-edge</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-trim">
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#text-box-edge">
+<link rel="match" href="text-box-trim-ignore-nested-text-box-edge-ref.html">
+<link rel="stylesheet" href="/fonts/ahem.css">
+<style>
+.spacer {
+  background: lightgray;
+  block-size: 100px;
+}
+.target {
+  font: 50px/2 Ahem;
+  text-box-trim: trim-both;
+  text-box-edge: auto;
+  /* auto keyword uses the value of line-fit-edge on the root inline box of the the affected line box,
+  interpreting leading (the initial value) as text. */
+}
+.inner {
+  text-box-edge: ex alphabetic;
+}
+</style>
+<div class="spacer"></div>
+<div class="target">
+  <div class="inner">ABC</div>
+</div>
+<div class="spacer"></div>
diff --git a/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-computed.html b/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-computed.html
new file mode 100644
index 00000000000..89854a6dece
--- /dev/null
+++ b/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-computed.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masonry: masonry-slack getComputedStyle()</title>
+<link rel="help" href="https://tabatkins.github.io/specs/css-masonry/">
+<link rel="author" title="Sam Davis Omekara Jr." href="mailto:samomekarajr@microsoft.com">
+<meta name="assert" content="masonry-slack computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<style>
+  #target {
+    font-size: 40px;
+  }
+</style>
+<script>
+test_computed_value("masonry-slack", "normal");
+
+test_computed_value("masonry-slack", "10px");
+test_computed_value("masonry-slack", "20%");
+test_computed_value("masonry-slack", "calc(20% + 10px)");
+
+test_computed_value("masonry-slack", "calc(-0.5em + 10px)", "0px");
+test_computed_value("masonry-slack", "calc(0.5em + 10px)", "30px");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-invalid.html b/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-invalid.html
new file mode 100644
index 00000000000..feb90fddca0
--- /dev/null
+++ b/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-invalid.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masonry: masonry-slack parsing</title>
+<link rel="help" href="https://tabatkins.github.io/specs/css-masonry/">
+<link rel="author" title="Sam Davis Omekara Jr." href="mailto:samomekarajr@microsoft.com">
+<meta name="assert" content="masonry-slack supports only the grammar 'normal | <length-percentage>'.">
+<meta name="assert" content="masonry-slack rejects negative <length-percentage>.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("masonry-slack", "auto");
+
+test_invalid_value("masonry-slack", "10");
+test_invalid_value("masonry-slack", "10px 20px");
+test_invalid_value("masonry-slack", "-1px");
+test_invalid_value("masonry-slack", "-10%");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-valid.html b/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-valid.html
new file mode 100644
index 00000000000..9447b9b78ca
--- /dev/null
+++ b/tests/wpt/tests/css/css-masonry/tentative/parsing/masonry-slack-valid.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Masonry: masonry-slack parsing</title>
+<link rel="help" href="https://tabatkins.github.io/specs/css-masonry/">
+<link rel="author" title="Sam Davis Omekara Jr." href="mailto:samomekarajr@microsoft.com">
+<meta name="assert" content="masonry-slack supports the full grammar 'normal | <length-percentage>'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("masonry-slack", "normal");
+
+test_valid_value("masonry-slack", "0", "0px");
+test_valid_value("masonry-slack", "1px");
+test_valid_value("masonry-slack", "calc(2em + 3ex)");
+test_valid_value("masonry-slack", "4%");
+test_valid_value("masonry-slack", "5vmin");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp/reference/webkit-line-clamp-047-ref.html b/tests/wpt/tests/css/css-overflow/line-clamp/reference/webkit-line-clamp-047-ref.html
index 83c5ab851c1..3f1e31ab222 100644
--- a/tests/wpt/tests/css/css-overflow/line-clamp/reference/webkit-line-clamp-047-ref.html
+++ b/tests/wpt/tests/css/css-overflow/line-clamp/reference/webkit-line-clamp-047-ref.html
@@ -6,7 +6,7 @@
     display: flow-root;
     background-color: yellow;
     padding: 0.5em;
-    font-size: 16px / 32px serif;
+    font: 16px / 32px serif;
     white-space: pre;
   }
   .float {
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp/reference/webkit-line-clamp-049-ref.html b/tests/wpt/tests/css/css-overflow/line-clamp/reference/webkit-line-clamp-049-ref.html
new file mode 100644
index 00000000000..7a3591b5eea
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp/reference/webkit-line-clamp-049-ref.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS Test Reference</title>
+<style>
+  .no-bottom-margin {
+    margin-bottom: 0;
+  }
+  .clamp {
+    display: flow-root;
+    font: 16px / 32px serif;
+    white-space: pre;
+    background-color: yellow;
+  }
+</style>
+
+<p class="no-bottom-margin"><span>The following yellow box should clamp after 4 lines.</span></p>
+
+<div class="clamp">Line 1
+Line 2
+Line 3
+Line 4…</div>
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp/webkit-line-clamp-047.html b/tests/wpt/tests/css/css-overflow/line-clamp/webkit-line-clamp-047.html
index 2e546c8dc92..cb66eb714c5 100644
--- a/tests/wpt/tests/css/css-overflow/line-clamp/webkit-line-clamp-047.html
+++ b/tests/wpt/tests/css/css-overflow/line-clamp/webkit-line-clamp-047.html
@@ -14,7 +14,7 @@
     /* no overflow: hidden */
     background-color: yellow;
     padding: 0.5em;
-    font-size: 16px / 32px serif;
+    font: 16px / 32px serif;
     white-space: pre;
   }
   .float {
diff --git a/tests/wpt/tests/css/css-overflow/line-clamp/webkit-line-clamp-049.html b/tests/wpt/tests/css/css-overflow/line-clamp/webkit-line-clamp-049.html
new file mode 100644
index 00000000000..807f83e5110
--- /dev/null
+++ b/tests/wpt/tests/css/css-overflow/line-clamp/webkit-line-clamp-049.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Overflow: -webkit-line-clamp block in inline</title>
+<link rel="author" title="Andreu Botella" href="mailto:abotella@igalia.com">
+<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-049-ref.html">
+<meta name="assert" content="If -webkit-line-clamp is a block inside an inline, it works correctly.">
+
+<style>
+p span clamp {
+  display: -webkit-box;
+  -webkit-box-orient: vertical;
+  -webkit-line-clamp: 4;
+  overflow: hidden; /* can be removed once implementations update their old -webkit-line-clamp implementations */
+  font: 16px / 32px serif;
+  white-space: pre;
+  background-color: yellow;
+}
+</style>
+
+<p><span>The following yellow box should clamp after 4 lines.
+
+<!-- Using a <clamp> element rather than e.g. <div class="clamp"> so the parser doesn't close the <p>.-->
+<clamp>Line 1
+Line 2
+Line 3
+Line 4
+Line 5</clamp>
+
+</span></p>
diff --git a/tests/wpt/tests/css/css-overflow/overflow-auto-scrollbar-gutter-intrinsic-003.html b/tests/wpt/tests/css/css-overflow/overflow-auto-scrollbar-gutter-intrinsic-003.html
index 6827773543b..ecfd85f5884 100644
--- a/tests/wpt/tests/css/css-overflow/overflow-auto-scrollbar-gutter-intrinsic-003.html
+++ b/tests/wpt/tests/css/css-overflow/overflow-auto-scrollbar-gutter-intrinsic-003.html
@@ -6,7 +6,7 @@
   <link rel="help" href="https://drafts.csswg.org/css-overflow-4/#scrollbar-gutter-property">
   <link rel="help" href="https://drafts.csswg.org/css-scrollbars/#scrollbar-width">
   <link rel="match" href="overflow-auto-scrollbar-gutter-intrinsic-003-ref.html">
-  <meta name="fuzzy" content="maxDifference=0-40; totalPixels=0-5" />
+  <meta name="fuzzy" content="maxDifference=0-70; totalPixels=0-10" />
 
   <style>
   .line {
diff --git a/tests/wpt/tests/css/css-scrollbars/scrollbar-gutter-scroll-into-view-ref.html b/tests/wpt/tests/css/css-overflow/scrollbar-gutter-scroll-into-view-ref.html
similarity index 100%
rename from tests/wpt/tests/css/css-scrollbars/scrollbar-gutter-scroll-into-view-ref.html
rename to tests/wpt/tests/css/css-overflow/scrollbar-gutter-scroll-into-view-ref.html
diff --git a/tests/wpt/tests/css/css-scrollbars/scrollbar-gutter-scroll-into-view.html b/tests/wpt/tests/css/css-overflow/scrollbar-gutter-scroll-into-view.html
similarity index 100%
rename from tests/wpt/tests/css/css-scrollbars/scrollbar-gutter-scroll-into-view.html
rename to tests/wpt/tests/css/css-overflow/scrollbar-gutter-scroll-into-view.html
diff --git a/tests/wpt/tests/css/css-ruby/inheritance.html b/tests/wpt/tests/css/css-ruby/inheritance.html
index 0128ea1ee8f..3120e92a7af 100644
--- a/tests/wpt/tests/css/css-ruby/inheritance.html
+++ b/tests/wpt/tests/css/css-ruby/inheritance.html
@@ -17,6 +17,8 @@
 <script>
 assert_inherited('ruby-align', 'space-around', 'center');
 assert_inherited('ruby-position', 'alternate', 'under');
+assert_inherited('ruby-merge', 'separate', 'merge');
+assert_inherited('ruby-overhang', 'auto', 'none');
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-ruby/parsing/ruby-merge-valid.html b/tests/wpt/tests/css/css-ruby/parsing/ruby-merge-valid.html
index 5694e87dff3..a7ce00a9a72 100644
--- a/tests/wpt/tests/css/css-ruby/parsing/ruby-merge-valid.html
+++ b/tests/wpt/tests/css/css-ruby/parsing/ruby-merge-valid.html
@@ -3,7 +3,7 @@
 <head>
 <meta charset="utf-8">
 <title>CSS Ruby Layout: parsing ruby-merge with valid values</title>
-<link rel="help" href="https://drafts.csswg.org/css-ruby-1/#ruby-align-property">
+<link rel="help" href="https://drafts.csswg.org/css-ruby-1/#propdef-ruby-merge">
 <meta name="assert" content="ruby-merge supports the full grammar 'separate | merge | auto'.">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
@@ -11,9 +11,9 @@
 </head>
 <body>
 <script>
-test_valid_value("ruby-align", "separate");
-test_valid_value("ruby-align", "merge");
-test_valid_value("ruby-align", "auto");
+test_valid_value("ruby-merge", "separate");
+test_valid_value("ruby-merge", "merge");
+test_valid_value("ruby-merge", "auto");
 </script>
 </body>
 </html>
diff --git a/tests/wpt/tests/css/css-ruby/parsing/ruby-overhang-invalid.html b/tests/wpt/tests/css/css-ruby/parsing/ruby-overhang-invalid.html
new file mode 100644
index 00000000000..0e0cb6c9caf
--- /dev/null
+++ b/tests/wpt/tests/css/css-ruby/parsing/ruby-overhang-invalid.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Ruby Layout: parsing ruby-overhang with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-ruby-1/#propdef-ruby-overhang">
+<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">
+<meta name="assert" content="ruby-overhang only supports the grammar 'auto | none'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_invalid_value("ruby-overhang", "auto none");
+test_invalid_value("ruby-overhang", "none auto");
+test_invalid_value("ruby-overhang", "auto auto");
+test_invalid_value("ruby-overhang", "none none");
+test_invalid_value("ruby-overhang", "auto 2px");
+test_invalid_value("ruby-overhang", "none 2px");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-ruby/parsing/ruby-overhang-valid.html b/tests/wpt/tests/css/css-ruby/parsing/ruby-overhang-valid.html
new file mode 100644
index 00000000000..a4f1a049b6d
--- /dev/null
+++ b/tests/wpt/tests/css/css-ruby/parsing/ruby-overhang-valid.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Ruby Layout: parsing ruby-overhang with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-ruby-1/#propdef-ruby-overhang">
+<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">
+<meta name="assert" content="ruby-overhang supports the full grammar 'auto | none'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("ruby-overhang", "auto");
+test_valid_value("ruby-overhang", "none");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-ruby/ruby-overhang-ref.html b/tests/wpt/tests/css/css-ruby/ruby-overhang-ref.html
new file mode 100644
index 00000000000..09b3d4608a7
--- /dev/null
+++ b/tests/wpt/tests/css/css-ruby/ruby-overhang-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>Tests for ruby-overhang: none</title>
+<link rel="stylesheet" href="/fonts/ahem.css">
+<style>
+  div {
+    font: 16px/5 Ahem;
+  }
+  span {
+    color: transparent;
+    font-size: 8px; /* annotation -> 50% */
+  }
+</style>
+<div>X<span>XXX</span>X</div>
+<div>X<span>XXXX</span>X</div>
+<div>X<span>XXXX</span>X</div>
diff --git a/tests/wpt/tests/css/css-ruby/ruby-overhang.html b/tests/wpt/tests/css/css-ruby/ruby-overhang.html
new file mode 100644
index 00000000000..5c8cfd16854
--- /dev/null
+++ b/tests/wpt/tests/css/css-ruby/ruby-overhang.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>Tests for ruby-overhang: none</title>
+<link rel="help" href="https://drafts.csswg.org/css-ruby-1/#ruby-overhang">
+<link rel="match" href="ruby-overhang-ref.html">
+<link rel="stylesheet" href="/fonts/ahem.css">
+<style>
+  div {
+    font: 16px/5 Ahem;
+  }
+  ruby, rt {
+    color: transparent;
+  }
+</style>
+<div>X<ruby>X<rt>XXXX</rt></ruby>X</div>
+<div>X<ruby style="ruby-overhang: none">X<rt>XXXX</rt></ruby>X</div>
+<div style="ruby-overhang: none">X<ruby>X<rt>XXXX</rt></ruby>X</div>
diff --git a/tests/wpt/tests/css/css-scroll-snap/input/keyboard.html b/tests/wpt/tests/css/css-scroll-snap/input/keyboard.html
index 79d0fc9f36d..25f430b705e 100644
--- a/tests/wpt/tests/css/css-scroll-snap/input/keyboard.html
+++ b/tests/wpt/tests/css/css-scroll-snap/input/keyboard.html
@@ -47,7 +47,7 @@ function ScrollCounter(test, eventTarget) {
 async function initializeScrollPosition(scroller, x, y) {
   return new Promise(async (resolve) => {
     if (scroller.scrollLeft != x || scroller.scrollTop != y) {
-      const scrollEndPromise = waitForScrollEnd(scroller);
+      const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
       scroller.scrollTo(x, y);
       await scrollEndPromise;
     }
@@ -59,7 +59,7 @@ promise_test(async t => {
   await initializeScrollPosition(scroller, 0, 0);
   assert_equals(scroller.scrollTop, 0, "verify test pre-condition");
   const scrollCounter = new ScrollCounter(t, scroller);
-  const scrollEndPromise = waitForScrollEnd(scroller);
+  const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowDown");
   await scrollEndPromise;
   assert_equals(scroller.scrollTop, 400);
@@ -71,7 +71,7 @@ promise_test(async t => {
   await initializeScrollPosition(scroller, 0, 400);
   assert_equals(scroller.scrollTop, 400, "verify test pre-condition");
   const scrollCounter = new ScrollCounter(t, scroller);
-  const scrollEndPromise = waitForScrollEnd(scroller);
+  const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowUp");
   await scrollEndPromise;
   assert_equals(scroller.scrollTop, 0);
@@ -83,7 +83,7 @@ promise_test(async t => {
   await initializeScrollPosition(scroller, 0, 0);
   assert_equals(scroller.scrollTop, 0, "verify test pre-condition");
   const scrollCounter = new ScrollCounter(t, scroller);
-  const scrollEndPromise = waitForScrollEnd(scroller);
+  const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowRight");
   await scrollEndPromise;
   assert_equals(scroller.scrollLeft, 400);
@@ -95,7 +95,7 @@ promise_test(async t => {
   await initializeScrollPosition(scroller, 400, 0);
   assert_equals(scroller.scrollLeft, 400, "verify test pre-condition");
   const scrollCounter = new ScrollCounter(t, scroller);
-  const scrollEndPromise = waitForScrollEnd(scroller);
+  const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowLeft");
   await scrollEndPromise;
   assert_equals(scroller.scrollLeft, 0);
@@ -116,7 +116,7 @@ promise_test(async t => {
   topRight.style.left = "500px";
   await initializeScrollPosition(scroller, 0, 0);
   assert_equals(scroller.scrollLeft, 0, "verify test pre-condition");
-  const scrollEndPromise = waitForScrollEnd(scroller);
+  const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowRight");
   await scrollEndPromise;
   assert_between_exclusive(scroller.scrollLeft, 0, 500);
@@ -138,7 +138,7 @@ promise_test(async t => {
   topRight.style.scrollSnapStop = "always";
   await initializeScrollPosition(scroller, 0, 0);
   assert_equals(scroller.scrollLeft, 0, "verify test pre-condition");
-  const scrollEndPromise = waitForScrollEnd(scroller);
+  const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowRight");
   await scrollEndPromise;
   assert_equals(scroller.scrollLeft, 20);
@@ -149,7 +149,7 @@ promise_test(async t => {
 promise_test(async t => {
   await initializeScrollPosition(scroller, 400, 0);
   await keyPress(scroller, "ArrowRight");
-  await waitForScrollStop(scroller);
+  await waitForDelayWithoutScrollEvent(scroller);
   assert_equals(scroller.scrollLeft, 400);
 }, "If there is no valid snap offset on the arrow key's direction other than "
 + "the current offset, and the scroll-snap-type is mandatory, stay at the "
@@ -172,7 +172,7 @@ promise_test(async t => {
 
   await initializeScrollPosition(scroller, 400, 0);
   assert_equals(scroller.scrollLeft, 400, "verify test pre-condition");
-  const scrollEndPromise = waitForScrollEnd(scroller);
+  const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowRight");
   await scrollEndPromise;
   assert_greater_than(scroller.scrollLeft, 400);
diff --git a/tests/wpt/tests/css/css-scroll-snap/input/snap-area-overflow-boundary-viewport-covering.tentative.html b/tests/wpt/tests/css/css-scroll-snap/input/snap-area-overflow-boundary-viewport-covering.tentative.html
index 0978f127fa4..fe2c38acda7 100644
--- a/tests/wpt/tests/css/css-scroll-snap/input/snap-area-overflow-boundary-viewport-covering.tentative.html
+++ b/tests/wpt/tests/css/css-scroll-snap/input/snap-area-overflow-boundary-viewport-covering.tentative.html
@@ -82,7 +82,7 @@ promise_test(async t => {
   assert_equals(scroller.scrollTop, 0, "verify test pre-condition");
 
   // Ensure we can freely scroll in an oversized element.
-  let scrollEndPromise = waitForScrollEnd(scroller);
+  let scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowDown");
   await scrollEndPromise;
   assert_greater_than(scroller.scrollTop, 0,
@@ -98,7 +98,7 @@ promise_test(async t => {
   target.style.height = `${scroller.clientHeight + 2 * scrollAmount - 1}px`;
   assert_equals(scroller.scrollTop, scrollAmount, "Verify container remains " +
       "at the same covering snap offset.");
-  scrollEndPromise = waitForScrollEnd(scroller);
+  scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowDown");
   await scrollEndPromise;
   assert_equals(scroller.scrollTop,
@@ -107,7 +107,7 @@ promise_test(async t => {
 
   // Must not get stuck at a snap position. Since already at the end of the
   // snap area, we should advance to the next.
-  scrollEndPromise = waitForScrollEnd(scroller);
+  scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await keyPress(scroller, "ArrowDown");
   await scrollEndPromise;
   assert_equals(scroller.scrollTop,
@@ -121,7 +121,7 @@ promise_test(async t => {
   assert_equals(scroller.scrollTop, 0, "verify test pre-condition");
 
   // Ensure we can freely scroll in an oversized element.
-  let scrollEndPromise = waitForScrollEnd(scroller);
+  let scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await new test_driver.Actions()
   .scroll(50, 50, 0, 50, {origin: scroller})
   .send();
@@ -134,7 +134,7 @@ promise_test(async t => {
   let scrollAmount =
       target.clientHeight - scroller.clientHeight - scroller.scrollTop + 1;
 
-  scrollEndPromise = waitForScrollEnd(scroller);
+  scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await new test_driver.Actions()
   .scroll(50, 50, 0, scrollAmount, {origin: scroller})
   .send();
@@ -146,7 +146,7 @@ promise_test(async t => {
   // snap area, we should advance to the next. scrollAmount must be enough to
   // advance to next snap position.
   scrollAmount = next.clientHeight / 2 + 10 /* margin-bottom */;
-  scrollEndPromise = waitForScrollEnd(scroller);
+  scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   await new test_driver.Actions()
   .scroll(50, 50, 0, scrollAmount, {origin: scroller})
   .send();
diff --git a/tests/wpt/tests/css/css-scroll-snap/multicol-001.html b/tests/wpt/tests/css/css-scroll-snap/multicol-001.html
new file mode 100644
index 00000000000..bc80c38209a
--- /dev/null
+++ b/tests/wpt/tests/css/css-scroll-snap/multicol-001.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#overview">
+<link rel="help" href="https://drafts.csswg.org/css-multicol/">
+<meta name="assert" content="Scroll snapping on fragmented block inside multicol">
+<div id="scrollable" style="overflow:hidden; margin:100px; scroll-snap-type:x mandatory; columns:3; width:340px; column-gap:20px; column-fill:auto; height:100px;">
+  <div style="height:200px; background:blue;"></div>
+  <div id="target" style="scroll-snap-align:start; height:120px; background:cyan;"></div>
+  <div style="height:200px; background:gray;"></div>
+</div>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+  test(()=> {
+    assert_equals(scrollable.scrollLeft, 240);
+  }, "scroll-snap-align: start");
+
+  test(()=> {
+    target.style.scrollSnapAlign = "end";
+    assert_equals(scrollable.scrollLeft, 120);
+  }, "scroll-snap-align: end");
+
+  test(()=> {
+    target.style.scrollSnapAlign = "center";
+    assert_equals(scrollable.scrollLeft, 180);
+  }, "scroll-snap-align: center");
+</script>
diff --git a/tests/wpt/tests/css/css-scroll-snap/multicol-002.html b/tests/wpt/tests/css/css-scroll-snap/multicol-002.html
new file mode 100644
index 00000000000..1c1617819f0
--- /dev/null
+++ b/tests/wpt/tests/css/css-scroll-snap/multicol-002.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#overview">
+<link rel="help" href="https://drafts.csswg.org/css-multicol/">
+<meta name="assert" content="Scroll snapping on fragmented block inside nested multicol">
+<div id="scrollable" style="overflow:hidden; margin:13px; width:300px; height:350px;">
+  <div style="columns:2; column-gap:10px; column-fill:auto; width:690px; height:300px; margin:100px;">
+    <div style="height:200px; background:hotpink;"></div>
+    <div style="columns:3; column-gap:20px; column-fill:auto; width:340px; height:200px;">
+      <div style="height:200px; background:blue;"></div>
+      <div id="target" style="height:120px; background:cyan;"></div>
+      <div style="height:200px; background:gray;"></div>
+    </div>
+  </div>
+</div>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+  // #target is fragmented across two columns - the third (and last) column of
+  // the first row of the inner multicol container, and the first column of the
+  // second row.
+  //
+  // The left offset of the first fragment of #target (relatively to the scroll
+  // port) is 340px (2 columns of 100px width and gaps of 20px width, which is
+  // 240px, plus the multicol left margin of 100px). The top offset is 300px
+  // (200px hotpink block, plus the multicol top margin of 100px). The fragment
+  // is 100px wide and tall.
+  //
+  // The left offset of the second fragment of #target is 450px (outer column
+  // width of 340px, plus outer column gap of 10px, plus multicol left margin of
+  // 100px). The top offset is 100px (multicol top margin). It is 100px wide and
+  // 20px tall.
+  //
+  // The bounding box of #target thus becomes left:340px, top:100px,
+  // width:210px, height:300px.
+  test(()=> {
+    target.style.scrollSnapAlign = "start";
+    scrollable.style.scrollSnapType = "x mandatory";
+    assert_equals(scrollable.scrollLeft, 340);
+    scrollable.style.scrollSnapType = "y mandatory";
+    assert_equals(scrollable.scrollTop, 100);
+  }, "start");
+
+  test(()=> {
+    target.style.scrollSnapAlign = "end";
+    scrollable.style.scrollSnapType = "x mandatory";
+    assert_equals(scrollable.scrollLeft, 250);
+    scrollable.style.scrollSnapType = "y mandatory";
+    assert_equals(scrollable.scrollTop, 50);
+  }, "end");
+
+  test(()=> {
+    target.style.scrollSnapAlign = "center";
+    scrollable.style.scrollSnapType = "x mandatory";
+    assert_equals(scrollable.scrollLeft, 295);
+    scrollable.style.scrollSnapType = "y mandatory";
+    assert_equals(scrollable.scrollTop, 75);
+  }, "center");
+</script>
diff --git a/tests/wpt/tests/css/css-scroll-snap/snap-to-empty-sized-element.html b/tests/wpt/tests/css/css-scroll-snap/snap-to-empty-sized-element.html
new file mode 100644
index 00000000000..ee41820b4b7
--- /dev/null
+++ b/tests/wpt/tests/css/css-scroll-snap/snap-to-empty-sized-element.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<meta name="viewport" content="width=device-width">
+<title>Resnap to empty sized element</title>
+<link rel="help" href="https://drafts.csswg.org/css-scroll-snap/#example-d0a2d86f"/>
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1914178">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+#scroller {
+  height: 500px;
+  width: 500px;
+  overflow: scroll;
+  scroll-snap-type: y proximity;
+}
+
+#scroller::after {
+  display: block;
+  content: "";
+  scroll-snap-align: end;
+}
+
+li {
+  height: 100px;
+}
+</style>
+<ul id="scroller">
+  <li></li>
+  <li></li>
+  <li></li>
+  <li></li>
+  <li></li>
+  <li></li>
+</ul>
+<script>
+test(t => {
+  const scroller = document.getElementById("scroller");
+  // Scroll to the last child in the scroll container.
+  document.querySelector("#scroller > :last-child").scrollIntoView();
+
+  const scrollTop = scroller.scrollTop;
+  assert_greater_than(scrollTop, 0);
+
+  // Append a new element into the scroll container.
+  const li = document.createElement("li");
+  scroller.appendChild(li);
+
+  // The ::after pseudo content should be the snap target, even if the size
+  // is empty.
+  assert_equals(scroller.scrollTop, scrollTop + 100);
+}, "Resnap to empty sized element");
+</script>
diff --git a/tests/wpt/tests/css/css-scroll-snap/support/common.js b/tests/wpt/tests/css/css-scroll-snap/support/common.js
index c7800b95f14..1cdce56e71b 100644
--- a/tests/wpt/tests/css/css-scroll-snap/support/common.js
+++ b/tests/wpt/tests/css/css-scroll-snap/support/common.js
@@ -70,38 +70,6 @@ function waitForWheelEvent(eventTarget) {
   return waitForEvent(eventTarget, 'wheel');
 }
 
-function waitForScrollStop(eventTarget) {
-  const TIMEOUT_IN_MS = 200;
-
-  return new Promise(resolve => {
-    let lastScrollEventTime = performance.now();
-
-    const scrollListener = () => {
-      lastScrollEventTime = performance.now();
-    };
-    eventTarget.addEventListener('scroll', scrollListener);
-
-    const tick = () => {
-      if (performance.now() - lastScrollEventTime > TIMEOUT_IN_MS) {
-        eventTarget.removeEventListener('scroll', scrollListener);
-        resolve();
-        return;
-      }
-      requestAnimationFrame(tick); // wait another frame
-    }
-    requestAnimationFrame(tick);
-  });
-}
-
-function waitForScrollEnd(eventTarget) {
-  if (window.onscrollend !== undefined) {
-    return waitForScrollendEventNoTimeout(eventTarget);
-  }
-  return waitForScrollEvent(eventTarget).then(() => {
-    return waitForScrollStop(eventTarget);
-  });
-}
-
 function waitForScrollTo(eventTarget, getValue, targetValue) {
   return new Promise((resolve, reject) => {
     const scrollListener = (evt) => {
diff --git a/tests/wpt/tests/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html b/tests/wpt/tests/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html
new file mode 100644
index 00000000000..e5ba1a8321a
--- /dev/null
+++ b/tests/wpt/tests/css/css-sizing/aspect-ratio/sign-function-aspect-ratio.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Sizing test: aspect-ratio with CSS sign() function</title>
+<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+:root {
+  font-size: 16px;
+}
+</style>
+<div id="target"></div>
+<script>
+  test_computed_value("aspect-ratio", "sign(1rem - 1px) / sign(1rem - 1px)", "1 / 1");
+</script>
diff --git a/tests/wpt/tests/css/css-syntax/urange-parsing.html b/tests/wpt/tests/css/css-syntax/urange-parsing.html
index d01f6a54c3f..199118258c6 100644
--- a/tests/wpt/tests/css/css-syntax/urange-parsing.html
+++ b/tests/wpt/tests/css/css-syntax/urange-parsing.html
@@ -157,6 +157,7 @@ testInvalidUrange("u+?a");
 // U+FFFFFF is too large!
 testInvalidUrange("u+??????");
 
+testInvalidUrange("()U+123");
 
 /* Finally, verify that u+a is properly parsed
    as IDENT(u) DELIM(+) IDENT(a) in other contexts */
diff --git a/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-001.html b/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-001.html
new file mode 100644
index 00000000000..eb9a620b0b4
--- /dev/null
+++ b/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-001.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+<link rel="help" href="https://drafts.csswg.org/css-tables-3/#computing-the-table-height">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1917028">
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<meta name="assert" content="This test verifies that the table's content height matches its final cross-size, and the table cells do not re-resolve their percentage heights based on the table's content height.">
+<style>
+.flex {
+  display: flex;
+}
+table {
+  border-spacing: 0;
+  width: 100px;
+  background: green;
+}
+tr {
+  height: 50px;
+}
+td {
+  height: 100%;
+}
+</style>
+
+<p>Test passes if there is a filled green square.</p>
+<div class="flex">
+  <table>
+    <thead><tr><td></td></tr></thead>
+    <tbody><tr><td></td></tr></tbody>
+  </table>
+</div>
diff --git a/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-002.html b/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-002.html
new file mode 100644
index 00000000000..7b7556c1f07
--- /dev/null
+++ b/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-002.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+<link rel="help" href="https://drafts.csswg.org/css-tables-3/#computing-the-table-height">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1917028">
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<meta name="assert" content="The test verifies that the table's specified height matches its final main size, and the table cells do not re-resolve their percentage heights based on the table's height.">
+<style>
+.flex {
+  display: flex;
+  flex-direction: column;
+}
+table {
+  border-spacing: 0;
+  width: 100px;
+  height: 100px;
+  flex: none;
+  background: green;
+}
+tr {
+  height: 50px;
+}
+td {
+  height: 100%;
+}
+</style>
+
+<p>Test passes if there is a filled green square.</p>
+<div class="flex">
+  <table>
+    <thead><tr><td></td></tr></thead>
+    <tbody><tr><td></td></tr></tbody>
+  </table>
+</div>
diff --git a/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-003.html b/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-003.html
new file mode 100644
index 00000000000..c8bfa9a2fd0
--- /dev/null
+++ b/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-003.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+<link rel="help" href="https://drafts.csswg.org/css-tables-3/#computing-the-table-height">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1917028">
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<meta name="assert" content="The test verifies that the table's content height matches its final main size, and the table cells do not re-resolve their percentage heights based on the table's content height.">
+<style>
+.flex {
+  display: flex;
+  flex-direction: column;
+}
+table {
+  border-spacing: 0;
+  width: 100px;
+  background: green;
+}
+tr {
+  height: 50px;
+}
+td {
+  height: 100%;
+}
+</style>
+
+<p>Test passes if there is a filled green square.</p>
+<div class="flex">
+  <table>
+    <thead><tr><td></td></tr></thead>
+    <tbody><tr><td></td></tr></tbody>
+  </table>
+</div>
diff --git a/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-004.html b/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-004.html
new file mode 100644
index 00000000000..a716ed25d97
--- /dev/null
+++ b/tests/wpt/tests/css/css-tables/table-as-item-cell-percentage-004.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+<link rel="help" href="https://drafts.csswg.org/css-tables-3/#computing-the-table-height">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1917028">
+<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
+<meta name="assert" content="This test verifies that the table grid item's content height matches its final height, and the table cells do not re-resolve their percentage heights based on the table's content height.">
+<style>
+.grid {
+  display: grid;
+}
+table {
+  border-spacing: 0;
+  width: 100px;
+  background: green;
+}
+tr {
+  height: 50px;
+}
+td {
+  height: 100%;
+}
+</style>
+
+<p>Test passes if there is a filled green square.</p>
+<div class="grid">
+  <table>
+    <thead><tr><td></td></tr></thead>
+    <tbody><tr><td></td></tr></tbody>
+  </table>
+</div>
diff --git a/tests/wpt/tests/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html b/tests/wpt/tests/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html
index 56925fb0bd6..ed8c963fe66 100644
--- a/tests/wpt/tests/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html
+++ b/tests/wpt/tests/css/css-transitions/KeyframeEffect-getKeyframes.tentative.html
@@ -166,4 +166,38 @@ test(t => {
 }, 'KeyframeEffect.getKeyframes() returns expected frames for a'
    + ' transition after resetting the effect target');
 
+test(t => {
+  const div = addDiv(t);
+
+  div.style.transition = '--foo 100s allow-discrete';
+  div.style.setProperty("--foo", "10");
+  getComputedStyle(div).getPropertyValue("--foo");
+  div.style.setProperty("--foo", "20");
+
+  const frames = getKeyframes(div);
+
+  assert_equals(frames.length, 2, 'number of frames');
+
+  const expected = [
+    { offset: 0,
+      computedOffset: 0,
+      easing: 'linear',
+      composite: 'auto',
+      "--foo": '10',
+    },
+    {
+      offset: 1,
+      computedOffset: 1,
+      easing: 'linear',
+      composite: 'auto',
+      "--foo": '20',
+    },
+  ];
+
+  for (let i = 0; i < frames.length; i++) {
+    assert_frames_equal(frames[i], expected[i], `ComputedKeyframe #${i}`);
+  }
+}, 'KeyframeEffect.getKeyframes() returns expected frames for a custom'
+      + ' property transition');
+
 </script>
diff --git a/tests/wpt/tests/css/css-transitions/custom-property-and-allow-discrete.html b/tests/wpt/tests/css/css-transitions/custom-property-and-allow-discrete.html
new file mode 100644
index 00000000000..509b939cce2
--- /dev/null
+++ b/tests/wpt/tests/css/css-transitions/custom-property-and-allow-discrete.html
@@ -0,0 +1,54 @@
+<!doctype html>
+<html>
+<head>
+<meta charset=utf-8>
+<title>CSS Transitions Test: transition of a custom property with "transition-behavior: allows-discrete"</title>
+<meta name="assert" content="Checks that transitioning a custom property with 'transition-behavior: allows-discrete' works as expected">
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/#transition-behavior-property">
+<script src="/resources/testharness.js" type="text/javascript"></script>
+<script src="/resources/testharnessreport.js" type="text/javascript"></script>
+<script src="./support/helper.js" type="text/javascript"></script>
+<style>
+  .target {
+    transition: --foo 10s step-start;
+    transition-behavior: allow-discrete;
+    --foo: bar;
+  }
+</style>
+</head>
+<body>
+<div id="log"></div>
+<script>
+promise_test(async t => {
+  const div = addDiv(t, { class: 'target' });
+
+  let transitionCount = 0;
+  div.addEventListener("transitionstart", () => transitionCount++);
+
+  // Trigger a transition on the custom property.
+  getComputedStyle(div).getPropertyValue('--foo');
+  div.style.setProperty('--foo', 'baz');
+  getComputedStyle(div).getPropertyValue('--foo');
+
+  // Wait two more frames to ensure only a single transition was started.
+  await waitForFrame();
+  await waitForFrame();
+
+  assert_equals(transitionCount, 1, 'A single "transitionstart" event was dispatched');
+}, 'It is possible to transition an unregistered custom property using "transition-behavior: allows-discrete"');
+
+promise_test(async t => {
+  const div = addDiv(t);
+  div.style.setProperty('--foo', 'bar');
+
+  // Trigger a transition on the custom property.
+  getComputedStyle(div).getPropertyValue('--foo');
+  div.style.transition = "--foo 10s allow-discrete";
+  div.style.setProperty('--foo', 'baz');
+
+  assert_equals(div.getAnimations()[0].transitionProperty, '--foo', 'A transition was started for the custom property');
+}, 'It is possible to transition an unregistered custom property using "transition-behavior: allows-discrete" when setting "transition-property" in the style change that yields the transition');
+
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/css/css-transitions/parsing/transition-timing-function-invalid.html b/tests/wpt/tests/css/css-transitions/parsing/transition-timing-function-invalid.html
index c69b7e75d3d..78ceb56bd96 100644
--- a/tests/wpt/tests/css/css-transitions/parsing/transition-timing-function-invalid.html
+++ b/tests/wpt/tests/css/css-transitions/parsing/transition-timing-function-invalid.html
@@ -30,6 +30,13 @@ test_invalid_value("transition-timing-function", "steps(0, jump-start)");
 test_invalid_value("transition-timing-function", "steps(0, jump-end)");
 test_invalid_value("transition-timing-function", "steps(0, jump-both)");
 test_invalid_value("transition-timing-function", "steps(1, jump-none)");
+test_invalid_value("transition-timing-function", "steps(2,()start)");
+test_invalid_value("transition-timing-function", "steps(2,() start)");
+test_invalid_value("transition-timing-function", "steps(2, ()start)");
+test_invalid_value("transition-timing-function", "steps(2())");
+test_invalid_value("transition-timing-function", "steps(2 ())");
+test_invalid_value("transition-timing-function", "steps(2,())");
+test_invalid_value("transition-timing-function", "steps(2, ())");
 
 test_invalid_value("transition-timing-function", "initial, cubic-bezier(0, -2, 1, 3)");
 test_invalid_value("transition-timing-function", "cubic-bezier(0, -2, 1, 3), initial");
diff --git a/tests/wpt/tests/css/css-values/attr-all-types.html b/tests/wpt/tests/css/css-values/attr-all-types.html
index 9418ed0865d..a2c4272b889 100644
--- a/tests/wpt/tests/css/css-values/attr-all-types.html
+++ b/tests/wpt/tests/css/css-values/attr-all-types.html
@@ -77,7 +77,11 @@
         }
     }
 
+    test_valid_attr('content', 'attr(data-foo)', 'abc', '"abc"');
+    test_valid_attr('content', 'attr(data-foo,)', 'abc', '"abc"');
+
     test_valid_attr('content', 'attr(data-foo string)', 'abc', '"abc"');
+    test_valid_attr('content', 'attr(data-foo string,)', 'abc', '"abc"');
     test_valid_attr('content', 'attr(data-foo string)', 'attr(data-foo)', '"attr(data-foo)"');
 
     test_valid_attr('animation-name', 'attr(data-foo ident)', 'anim', 'anim');
@@ -133,7 +137,7 @@
     test_invalid_attr('background-color', 'attr(data-foo, red)', 'abc');
 
     test_invalid_attr('font-size', 'attr(data-foo number)', '10');
-    test_invalid_attr('font-weight', 'attr(data-foo number,)', '10');
+    test_invalid_attr('font-weight', 'attr(data-foo number),', '10');
     test_invalid_attr('font-weight', 'attr(data-foo number)', 'calc(1 + 3)');
 
     test_invalid_attr('font-size', 'attr(data-foo percentage)', 'abc');
@@ -160,4 +164,6 @@
     test_invalid_attr('height', 'attr(data-foo fr)', '10');
     test_invalid_attr('transition-duration', 'attr(data-foo ms)', '10px');
     test_invalid_attr('transition-duration', 'attr(data-foo ms)', '10px foo');
+
+    test_invalid_attr('width', 'attr(())', '10px');
 </script>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-values/attr-crash.html b/tests/wpt/tests/css/css-values/attr-crash.html
new file mode 100644
index 00000000000..012dad91cf8
--- /dev/null
+++ b/tests/wpt/tests/css/css-values/attr-crash.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>CSS Values and Units Test: attr</title>
+<meta name="assert" content="Test attr use after free crash">
+<link rel="help" href="https://crbug.com/365802556">
+<head>
+    <style>
+        #div {
+            --prop: attr(data-foo ident);
+        }
+    </style>
+</head>
+<body>
+    <div id="div" data-foo="aaa123\aaa123aaa">Content</div>
+</body>
+<script>
+    var elem = document.getElementById("div");
+    getComputedStyle(elem).getPropertyValue("--prop");
+</script>
diff --git a/tests/wpt/tests/css/css-values/attr-security.html b/tests/wpt/tests/css/css-values/attr-security.html
new file mode 100644
index 00000000000..fef9d80be44
--- /dev/null
+++ b/tests/wpt/tests/css/css-values/attr-security.html
@@ -0,0 +1,137 @@
+<!DOCTYPE html>
+<title>CSS Values and Units Test: attr() security limitations</title>
+<link rel="help" href="https://drafts.csswg.org/css-values-5/#attr-security">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<style>
+  @property --some-url {
+    syntax: "<string>";
+    inherits: false;
+    initial-value: "empty";
+  }
+  div {
+    --some-url: attr(data-foo);
+    --some-other-url: attr(data-foo);
+  }
+</style>
+
+<html>
+  <body>
+    <div id="attr"></div>
+  </body>
+</html>
+
+<script>
+    function test_attr(property, attrString, attrValue, expectedValue) {
+        var elem = document.getElementById("attr");
+        elem.setAttribute("data-foo", attrValue);
+        elem.style.setProperty(property, attrString);
+
+        test(() => {
+            assert_equals(window.getComputedStyle(elem).getPropertyValue(property),
+                          expectedValue,
+                          "'" + property + ": " + attrString + "' with data-foo='" + attrValue + "'");
+        });
+
+        elem.style.setProperty(property, null);
+    }
+
+    // Direct use.
+    test_attr('--x',
+              'image-set(attr(data-foo))',
+              'https://does-not-exist.test/404.png',
+              'image-set("https://does-not-exist.test/404.png")');
+    test_attr('background-image',
+              'image-set(attr(data-foo))',
+              'https://does-not-exist.test/404.png',
+              'none');
+    test_attr('background-image',
+              'image-set("https://does-not-exist.test/404.png")',
+              'https://does-not-exist.test/404.png',
+              'image-set(url("https://does-not-exist.test/404.png") 1dppx)');
+
+    test_attr('--x',
+              'src(attr(data-foo))',
+              'https://does-not-exist.test/404.png',
+              'src("https://does-not-exist.test/404.png")');
+    test_attr('background-image',
+              'src(attr(data-foo))',
+              'https://does-not-exist.test/404.png',
+              'none');
+    test_attr('background-image',
+              'src("https://does-not-exist.test/404.png")',
+              'https://does-not-exist.test/404.png',
+              'src(url("https://does-not-exist.test/404.png"))');
+
+    test_attr('--x',
+              'src(string("https://does-not-exist.test" attr(data-foo)))',
+              '/404.png',
+              'src(string("https://does-not-exist.test" "/404.png"))');
+    test_attr('background-image',
+              'src(string("https://does-not-exist.test" attr(data-foo)))',
+              '/404.png',
+              'none');
+    test_attr('background-image',
+              'src(string("https://does-not-exist.test/""404.png")))',
+              '/404.png',
+              'src(url("https://does-not-exist.test/404.png"))');
+
+    test_attr('--x',
+              'image(attr(data-foo))',
+              'https://does-not-exist.test/404.png',
+              'image("https://does-not-exist.test/404.png")');
+    test_attr('background-image',
+              'image(attr(data-foo))',
+              'https://does-not-exist.test/404.png',
+              'none');
+    test_attr('background-image',
+              'image("https://does-not-exist.test/404.png")',
+              'https://does-not-exist.test/404.png',
+              'image(url("https://does-not-exist.test/404.png"))');
+
+    test_attr('--x',
+              'image(attr(data-foo))',
+              'https://does-not-exist.test/404.png',
+              'image("https://does-not-exist.test/404.png")');
+    test_attr('background-image',
+              'image(attr(data-foo))',
+              'https://does-not-exist.test/404.png',
+              'none');
+    test_attr('background-image',
+              'image("https://does-not-exist.test/404.png")',
+              'https://does-not-exist.test/404.png',
+              'image(url("https://does-not-exist.test/404.png"))');
+
+    // The remaining tests use image-set(), but should be equivalent for image() etc.
+
+    // Test in a fallback.
+    test_attr('--x',
+              'image-set(var(--y, attr(data-foo)))',
+              'https://does-not-exist.test/404.png',
+              'image-set("https://does-not-exist.test/404.png")');
+    test_attr('background-image',
+              'image-set(var(--y, attr(data-foo)))',
+              'https://does-not-exist.test/404.png',
+              'none');
+
+    // Test via a registered custom property.
+    test_attr('--x',
+              'image-set(var(--some-url))',
+              'https://does-not-exist.test/404.png',
+              'image-set("https://does-not-exist.test/404.png")');
+    test_attr('background-image',
+              'image-set(var(--some-url))',
+              'https://does-not-exist.test/404.png',
+              'none');
+
+    // Test via a non-registered custom property.
+    test_attr('--x',
+              'image-set(var(--some-other-url))',
+              'https://does-not-exist.test/404.png',
+              'image-set("https://does-not-exist.test/404.png")');
+    test_attr('background-image',
+              'image-set(var(--some-other-url))',
+              'https://does-not-exist.test/404.png',
+              'none');
+</script>
diff --git a/tests/wpt/tests/css/css-variables/var-parsing.html b/tests/wpt/tests/css/css-variables/var-parsing.html
new file mode 100644
index 00000000000..0c69342f2ee
--- /dev/null
+++ b/tests/wpt/tests/css/css-variables/var-parsing.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>CSS Custom Properties: var() parsing</title>
+<link rel="help" href="https://drafts.csswg.org/css-variables">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<div id="target"></div>
+
+<script>
+
+test_valid_value('width', 'var(--x)');
+test_valid_value('width', 'var(--x,)');
+test_valid_value('width', 'var(--x, )');
+
+test_invalid_value('width', 'var(--x ())');
+test_invalid_value('width', 'var(--x () )');
+test_invalid_value('width', 'var(--x() )');
+test_invalid_value('width', 'var(--x (),)');
+test_invalid_value('width', 'var(--x(),)');
+
+</script>
diff --git a/tests/wpt/tests/css/css-view-transitions/nested/nested-exit.tentative.html b/tests/wpt/tests/css/css-view-transitions/nested/nested-exit.tentative.html
index 4612a88a130..dd1d6562280 100644
--- a/tests/wpt/tests/css/css-view-transitions/nested/nested-exit.tentative.html
+++ b/tests/wpt/tests/css/css-view-transitions/nested/nested-exit.tentative.html
@@ -2,7 +2,6 @@
 <html class=reftest-wait>
 <title>Nested group should stay nested in an exit transition</title>
 <meta name=fuzzy content="maxDifference=0-255; totalPixels=0-515">
-<meta name=variant content="?vtmode=crossdoc">
 <link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">
 <link rel="match" href="nested-ref-100.html">
 <script src="/common/reftest-wait.js"></script>
diff --git a/tests/wpt/tests/css/css-view-transitions/nested/resources/compute-test.js b/tests/wpt/tests/css/css-view-transitions/nested/resources/compute-test.js
index b08b58287b0..4867c689f36 100644
--- a/tests/wpt/tests/css/css-view-transitions/nested/resources/compute-test.js
+++ b/tests/wpt/tests/css/css-view-transitions/nested/resources/compute-test.js
@@ -6,27 +6,13 @@ function add_rule() {
     document.head.append(style);
 }
 
-const mode = new URLSearchParams(location.search).get("vtmode");
-if (mode === "crossdoc") {
-    onload = () => {
-        const url = new URL(location.href);
-        url.searchParams.set("vtmode", "crossdoc-newpage");
-        location.replace(url.href);
-    };
-    add_rule();
-} else if (mode === "crossdoc-newpage") {
-    document.documentElement.classList.add("vt-new");
-    add_rule();
-    takeScreenshot();
-} else {
-    onload = async() => {
-        const transition = document.startViewTransition(() => {
-            document.documentElement.classList.add("vt-new");
-        });
-        transition.finished.then(() => {
-            document.documentElement.classList.remove("vt-new");
-        });
-        transition.ready.then(() => takeScreenshot());
-    }
+onload = async() => {
+    const transition = document.startViewTransition(() => {
+        document.documentElement.classList.add("vt-new");
+    });
+    transition.finished.then(() => {
+        document.documentElement.classList.remove("vt-new");
+    });
+    transition.ready.then(() => takeScreenshot());
 }
 
diff --git a/tests/wpt/tests/css/css-viewport/zoom/canvas-ref.html b/tests/wpt/tests/css/css-viewport/zoom/canvas-ref.html
new file mode 100644
index 00000000000..d1b9a0d68dd
--- /dev/null
+++ b/tests/wpt/tests/css/css-viewport/zoom/canvas-ref.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<style>
+canvas {
+  width: 600px;
+  height: 200px;
+}
+</style>
+<script>
+document.addEventListener("DOMContentLoaded", () => {
+  const ctx = document.getElementById("canvas").getContext("2d");
+  ctx.font = "48px serif";
+  ctx.fillText(ctx.font, 10, 50);
+});
+</script>
+<canvas id="canvas" width="300" height="100"></canvas>
diff --git a/tests/wpt/tests/css/css-viewport/zoom/canvas.html b/tests/wpt/tests/css/css-viewport/zoom/canvas.html
new file mode 100644
index 00000000000..dbde2eda26a
--- /dev/null
+++ b/tests/wpt/tests/css/css-viewport/zoom/canvas.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1909625">
+<link rel="help" href="https://html.spec.whatwg.org/#dom-context-2d-font">
+<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
+<link rel="author" href="https://mozilla.org" title="Mozilla">
+<link rel="match" href="canvas-ref.html">
+<title>zoom is ignored for canvas</title>
+<style>
+canvas {
+  zoom: 2;
+}
+</style>
+<script>
+document.addEventListener("DOMContentLoaded", () => {
+  const ctx = document.getElementById("canvas").getContext("2d");
+  ctx.font = "48px serif";
+  ctx.fillText(ctx.font, 10, 50);
+});
+</script>
+<canvas id="canvas" width="300" height="100"></canvas>
diff --git a/tests/wpt/tests/css/css-viewport/zoom/textarea-very-small-zoom-crash.html b/tests/wpt/tests/css/css-viewport/zoom/textarea-very-small-zoom-crash.html
new file mode 100644
index 00000000000..071aaabe609
--- /dev/null
+++ b/tests/wpt/tests/css/css-viewport/zoom/textarea-very-small-zoom-crash.html
@@ -0,0 +1,6 @@
+<style>
+*:nth-of-type(1) {
+  zoom: 5%;
+}
+</style>
+<textarea>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-htb-001-ref.html b/tests/wpt/tests/css/css-writing-modes/table-progression-htb-001-ref.html
new file mode 100644
index 00000000000..15654f85c4d
--- /dev/null
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-htb-001-ref.html
@@ -0,0 +1,112 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Reference</title>
+<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
+<link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2016-01-15 -->
+
+<style>
+  table {
+    border-spacing: 0;
+    margin: 1em;
+    float: left;
+  }
+  td {
+    width: 1em;
+    height: 1em;
+    border: solid gray;
+  }
+
+  .navy { background: navy}
+  .blue { background: blue }
+  .aqua { background: aqua }
+  .teal { background: teal }
+  .purp { background: purple }
+  .pink { background: fuchsia }
+  .yllw { background: yellow }
+  .orng { background: orange }
+  caption { background: green; }
+</style>
+
+<p>Test passes if the following three tables look identical.
+
+<table>
+  <thead>
+    <tr>
+      <td class="navy">
+      <td class="blue">
+      <td colspan=2>
+  <tfoot>
+    <tr>
+      <td colspan=2>
+      <td class="aqua">
+      <td class="teal">
+  <tbody>
+    <tr>
+      <td rowspan=3>
+      <td colspan=2>
+      <td class="purp">
+    <tr>
+      <td class="pink">
+      <td rowspan=2 colspan=2>
+    <tr>
+      <td class="yllw">
+  <tbody>
+    <tr>
+      <td class="orng">
+      <td colspan=3>
+</table>
+
+<table>
+  <thead>
+    <tr>
+      <td class="navy">
+      <td class="blue">
+      <td colspan=2>
+  <tfoot>
+    <tr>
+      <td colspan=2>
+      <td class="aqua">
+      <td class="teal">
+  <tbody>
+    <tr>
+      <td rowspan=3>
+      <td colspan=2>
+      <td class="purp">
+    <tr>
+      <td class="pink">
+      <td rowspan=2 colspan=2>
+    <tr>
+      <td class="yllw">
+  <tbody>
+    <tr>
+      <td class="orng">
+      <td colspan=3>
+</table>
+
+<table>
+  <thead>
+    <tr>
+      <td class="navy">
+      <td class="blue">
+      <td colspan=2>
+  <tfoot>
+    <tr>
+      <td colspan=2>
+      <td class="aqua">
+      <td class="teal">
+  <tbody>
+    <tr>
+      <td rowspan=3>
+      <td colspan=2>
+      <td class="purp">
+    <tr>
+      <td class="pink">
+      <td rowspan=2 colspan=2>
+    <tr>
+      <td class="yllw">
+  <tbody>
+    <tr>
+      <td class="orng">
+      <td colspan=3>
+</table>
+
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-htb-001.html b/tests/wpt/tests/css/css-writing-modes/table-progression-htb-001.html
new file mode 100644
index 00000000000..14ea0da292e
--- /dev/null
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-htb-001.html
@@ -0,0 +1,136 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Test: horizontal-tb Table Row/Rowgroup/Cell Ordering</title>
+<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
+<link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <!-- 2016-01-15 -->
+<link rel="match" href="table-progression-htb-001-ref.html">
+<meta name="assert" content="This test checks that horizontal-tb tables order rows/rowgroups top to bottom and cells left-to-right (LTR) or right-to-left (RTL) per 'direction'. This test also checks that 'writing-mode' and 'direction' do not apply to table rows and row groups.">
+<link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#block-flow" title="3.1 Block Flow Direction: the 'writing-mode' property">
+<link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#direction" title="2.1 Specifying Directionality: the 'direction' property">
+
+<style>
+  [dir=rtl] {
+    direction: rtl;
+  }
+
+  table {
+    border-spacing: 0;
+    margin: 1em;
+    float: left;
+  }
+  td {
+    width: 1em;
+    height: 1em;
+    border: solid gray;
+  }
+
+  .navy { background: navy}
+  .blue { background: blue }
+  .aqua { background: aqua }
+  .teal { background: teal }
+  .purp { background: purple }
+  .pink { background: fuchsia }
+  .yllw { background: yellow }
+  .orng { background: orange }
+
+  /* These rules must have no effect. */
+  .test thead,
+  .test tfoot,
+  .test tbody,
+  .test tr,
+  .test td {
+    writing-mode: vertical-rl;
+    direction: rtl;
+  }
+  .test[dir=rtl] thead,
+  .test[dir=rtl] tfoot,
+  .test[dir=rtl] tbody,
+  .test[dir=rtl] tr,
+  .test[dir=rtl] td {
+    writing-mode: vertical-lr;
+    direction: ltr;
+  }
+</style>
+
+<p>Test passes if the following three tables look identical.
+
+<table class="test">
+  <thead>
+    <tr>
+      <td class="navy">
+      <td class="blue">
+      <td colspan=2>
+  <tfoot>
+    <tr>
+      <td colspan=2>
+      <td class="aqua">
+      <td class="teal">
+  <tbody>
+    <tr>
+      <td rowspan=3>
+      <td colspan=2>
+      <td class="purp">
+    <tr>
+      <td class="pink">
+      <td rowspan=2 colspan=2>
+    <tr>
+      <td class="yllw">
+  <tbody>
+    <tr>
+      <td class="orng">
+      <td colspan=3>
+</table>
+
+<table dir=rtl class="test">
+  <thead>
+    <tr>
+      <td colspan=2>
+      <td class="blue">
+      <td class="navy">
+  <tfoot>
+    <tr>
+      <td class="teal">
+      <td class="aqua">
+      <td colspan=2>
+  <tbody>
+    <tr>
+      <td class="purp">
+      <td colspan=2>
+      <td rowspan=3>
+    <tr>
+      <td rowspan=2 colspan=2>
+      <td class="pink">
+    <tr>
+      <td class="yllw">
+  <tbody>
+    <tr>
+      <td colspan=3>
+      <td class="orng">
+</table>
+
+<table class="reference">
+  <thead>
+    <tr>
+      <td class="navy">
+      <td class="blue">
+      <td colspan=2>
+  <tfoot>
+    <tr>
+      <td colspan=2>
+      <td class="aqua">
+      <td class="teal">
+  <tbody>
+    <tr>
+      <td rowspan=3>
+      <td colspan=2>
+      <td class="purp">
+    <tr>
+      <td class="pink">
+      <td rowspan=2 colspan=2>
+    <tr>
+      <td class="yllw">
+  <tbody>
+    <tr>
+      <td class="orng">
+      <td colspan=3>
+</table>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-htb-002-ref.html b/tests/wpt/tests/css/css-writing-modes/table-progression-htb-002-ref.html
new file mode 100644
index 00000000000..7a94fc6a77d
--- /dev/null
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-htb-002-ref.html
@@ -0,0 +1,69 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Reference</title>
+<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
+<link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2016-01-15 -->
+
+<style>
+  table {
+    border-spacing: 0;
+    border: solid gray;
+    margin: 1em;
+  }
+  td {
+    width: 1em;
+    height: 1em;
+  }
+
+  .navy { background: navy}
+  .blue { background: blue }
+  .aqua { background: aqua }
+  .teal { background: teal }
+</style>
+
+<p>Test passes if the following patterned boxes all look identical.
+
+<table class="reference">
+  <tr>
+    <td class="navy">
+    <td class="navy">
+    <td class="blue">
+    <td class="aqua">
+    <td class="aqua">
+</table>
+
+<table class="reference">
+  <tr>
+    <td class="navy">
+    <td class="navy">
+    <td class="blue">
+    <td class="aqua">
+    <td class="aqua">
+</table>
+
+<table class="reference">
+  <tr>
+    <td class="navy">
+    <td class="navy">
+    <td class="blue">
+    <td class="aqua">
+    <td class="aqua">
+</table>
+
+<table class="reference">
+  <tr>
+    <td class="navy">
+    <td class="navy">
+    <td class="blue">
+    <td class="aqua">
+    <td class="aqua">
+</table>
+
+<table class="reference">
+  <tr>
+    <td class="navy">
+    <td class="navy">
+    <td class="blue">
+    <td class="aqua">
+    <td class="aqua">
+</table>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-htb-002.html b/tests/wpt/tests/css/css-writing-modes/table-progression-htb-002.html
new file mode 100644
index 00000000000..4007e0400f8
--- /dev/null
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-htb-002.html
@@ -0,0 +1,83 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Test: horizontal-tb Table Column/Colgroup Ordering</title>
+<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
+<link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> <!-- 2016-01-15 -->
+<link rel="match" href="table-progression-002-ref.html">
+<meta name="assert" content="This test checks that horizontal-tb tables order columns left-to-right (LTR) or right-to-left (RTL) per the table's 'direction'. This test also checks that 'writing-mode' and 'direction' do not apply to table columns and column groups.">
+<link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#block-flow" title="3.1 Block Flow Direction: the 'writing-mode' property">
+<link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#direction" title="2.1 Specifying Directionality: the 'direction' property">
+
+<style>
+  [dir=rtl] {
+    direction: rtl;
+  }
+
+  table {
+    border-spacing: 0;
+    border: solid gray;
+    margin: 1em;
+  }
+  td {
+    width: 1em;
+    height: 1em;
+  }
+
+  .navy { background: navy}
+  .blue { background: blue }
+  .aqua { background: aqua }
+  .teal { background: teal }
+
+  /* These declarations must have no effect. */
+  .test col,
+  .test colgroup {
+    writing-mode: vertical-rl;
+    direction: rtl;
+  }
+  .test[dir=rtl] col,
+  .test[dir=rtl] colgroup {
+    writing-mode: vertical-lr;
+    direction: ltr;
+  }
+</style>
+
+<p>Test passes if the following patterned boxes all look identical.
+
+<table class="test">
+  <col span=2 class="navy">
+  <col class="blue">
+  <col span=2 class="aqua">
+  <tr><td><td><td><td><td>
+</table>
+<table class="test">
+  <colgroup span=2 class="navy"></colgroup>
+  <colgroup>
+    <col class="blue">
+    <col span=2 class="aqua">
+  </colgroup>
+  <tr><td><td><td><td><td>
+</table>
+
+<table dir=rtl class="test">
+  <col span=2 class="aqua">
+  <col class="blue">
+  <col span=2 class="navy">
+  <tr><td><td><td><td><td>
+</table>
+<table dir=rtl class="test">
+  <colgroup span=2 class="aqua"></colgroup>
+  <colgroup>
+    <col class="blue">
+    <col span=2 class="navy">
+  </colgroup>
+  <tr><td><td><td><td><td>
+</table>
+
+<table class="reference">
+  <tr>
+    <td class="navy">
+    <td class="navy">
+    <td class="blue">
+    <td class="aqua">
+    <td class="aqua">
+</table>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-slr-001.html b/tests/wpt/tests/css/css-writing-modes/table-progression-slr-001.html
index 25050b8e371..ae27d395e34 100644
--- a/tests/wpt/tests/css/css-writing-modes/table-progression-slr-001.html
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-slr-001.html
@@ -42,7 +42,7 @@
   .test tbody,
   .test tr,
   .test td {
-    writing-mode: horizontal-tb; /* For UAs not supporting vertical-rl */
+    writing-mode: horizontal-tb; /* For UAs not supporting sideways-rl */
     writing-mode: sideways-rl;
     direction: rtl;
   }
@@ -51,6 +51,7 @@
   .test[dir=rtl] tbody,
   .test[dir=rtl] tr,
   .test[dir=rtl] td {
+    writing-mode: horizontal-tb;
     direction: ltr;
   }
 </style>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-slr-002.html b/tests/wpt/tests/css/css-writing-modes/table-progression-slr-002.html
index 1525e2423d5..582877efa29 100644
--- a/tests/wpt/tests/css/css-writing-modes/table-progression-slr-002.html
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-slr-002.html
@@ -40,6 +40,7 @@
   }
   .test[dir=rtl] col,
   .test[dir=rtl] colgroup {
+    writing-mode: horizontal-tb;
     direction: ltr;
   }
 </style>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-srl-001.html b/tests/wpt/tests/css/css-writing-modes/table-progression-srl-001.html
index b74b2caee53..06c00f12501 100644
--- a/tests/wpt/tests/css/css-writing-modes/table-progression-srl-001.html
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-srl-001.html
@@ -41,7 +41,7 @@
   .test tbody,
   .test tr,
   .test td {
-    writing-mode: horizontal-tb; /* For UAs not supporting vertical-rl */
+    writing-mode: horizontal-tb; /* For UAs not supporting sideways-lr */
     writing-mode: sideways-lr;
     direction: rtl;
   }
@@ -50,6 +50,7 @@
   .test[dir=rtl] tbody,
   .test[dir=rtl] tr,
   .test[dir=rtl] td {
+    writing-mode: horizontal-tb;
     direction: ltr;
   }
 </style>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-srl-002.html b/tests/wpt/tests/css/css-writing-modes/table-progression-srl-002.html
index 7d5df32cc26..117fef84dc8 100644
--- a/tests/wpt/tests/css/css-writing-modes/table-progression-srl-002.html
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-srl-002.html
@@ -41,6 +41,7 @@
   }
   .test[dir=rtl] col,
   .test[dir=rtl] colgroup {
+    writing-mode: horizontal-tb;
     direction: ltr;
   }
 </style>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-vlr-001.html b/tests/wpt/tests/css/css-writing-modes/table-progression-vlr-001.html
index 6b9d3c1f443..2efdf7dd54e 100644
--- a/tests/wpt/tests/css/css-writing-modes/table-progression-vlr-001.html
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-vlr-001.html
@@ -51,6 +51,7 @@
   .test[dir=rtl] tbody,
   .test[dir=rtl] tr,
   .test[dir=rtl] td {
+    writing-mode: horizontal-tb;
     direction: ltr;
   }
 </style>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-vlr-002.html b/tests/wpt/tests/css/css-writing-modes/table-progression-vlr-002.html
index a3668178a93..708ce703263 100644
--- a/tests/wpt/tests/css/css-writing-modes/table-progression-vlr-002.html
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-vlr-002.html
@@ -42,6 +42,7 @@
   }
   .test[dir=rtl] col,
   .test[dir=rtl] colgroup {
+    writing-mode: horizontal-tb;
     direction: ltr;
   }
 </style>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-vrl-001.html b/tests/wpt/tests/css/css-writing-modes/table-progression-vrl-001.html
index c5c30900585..b46ee9fd381 100644
--- a/tests/wpt/tests/css/css-writing-modes/table-progression-vrl-001.html
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-vrl-001.html
@@ -41,7 +41,7 @@
   .test tbody,
   .test tr,
   .test td {
-    writing-mode: horizontal-tb; /* For UAs not supporting vertical-rl */
+    writing-mode: horizontal-tb; /* For UAs not supporting vertical-lr */
     writing-mode: vertical-lr;
     direction: rtl;
   }
@@ -50,6 +50,7 @@
   .test[dir=rtl] tbody,
   .test[dir=rtl] tr,
   .test[dir=rtl] td {
+    writing-mode: horizontal-tb;
     direction: ltr;
   }
 </style>
diff --git a/tests/wpt/tests/css/css-writing-modes/table-progression-vrl-002.html b/tests/wpt/tests/css/css-writing-modes/table-progression-vrl-002.html
index 99fe8153e59..e78682c2cb3 100644
--- a/tests/wpt/tests/css/css-writing-modes/table-progression-vrl-002.html
+++ b/tests/wpt/tests/css/css-writing-modes/table-progression-vrl-002.html
@@ -41,6 +41,7 @@
   }
   .test[dir=rtl] col,
   .test[dir=rtl] colgroup {
+    writing-mode: horizontal-tb;
     direction: ltr;
   }
 </style>
diff --git a/tests/wpt/tests/css/cssom-view/resources/simultaneousScrollIntoViews.js b/tests/wpt/tests/css/cssom-view/resources/simultaneousScrollIntoViews.js
index f3d02d2598d..32de35fb544 100644
--- a/tests/wpt/tests/css/cssom-view/resources/simultaneousScrollIntoViews.js
+++ b/tests/wpt/tests/css/cssom-view/resources/simultaneousScrollIntoViews.js
@@ -30,7 +30,7 @@ async function simultaneousScrollIntoViewsTest(test,
   }
 
   const scrollend_promises = Array.from(scrollers, (scroller) => {
-    return waitForScrollEnd(scroller);
+    return waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
   });
 
   // Scroll all targets into view.
diff --git a/tests/wpt/tests/css/cssom-view/scrollIntoView-smooth.html b/tests/wpt/tests/css/cssom-view/scrollIntoView-smooth.html
index 64c3c5955d5..6882856d078 100644
--- a/tests/wpt/tests/css/cssom-view/scrollIntoView-smooth.html
+++ b/tests/wpt/tests/css/cssom-view/scrollIntoView-smooth.html
@@ -2,7 +2,6 @@
 <!-- meta name="viewport" content="width=device-width,initial-scale=1" -->
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="/css/css-scroll-snap/support/common.js"></script>
 <script src="/dom/events/scrolling/scroll_support.js"></script>
 <title>Check End Position of smooth scrollIntoView</title>
 <div id="container" style="height: 2500px; width: 2500px;">
@@ -27,7 +26,7 @@ promise_test(async (t) => {
   var expected_y = content.offsetTop + content_height - window_height;
   assert_not_equals(window.scrollX, expected_x, "scrollX");
   assert_not_equals(window.scrollY, expected_y, "scrollY");
-  const scrollend_promise = waitForScrollEnd(document);
+  const scrollend_promise = waitForScrollEndFallbackToDelayWithoutScrollEvent(document);
   content.scrollIntoView({behavior: "smooth", block: "nearest", inline:
 "nearest"});
   await scrollend_promise;
@@ -41,7 +40,7 @@ promise_test(async (t) => {
   var expected_y = content.offsetTop;
   assert_not_equals(window.scrollX, expected_x, "scrollX");
   assert_not_equals(window.scrollY, expected_y, "scrollY");
-  const scrollend_promise = waitForScrollEnd(document);
+  const scrollend_promise = waitForScrollEndFallbackToDelayWithoutScrollEvent(document);
   content.scrollIntoView({behavior: "smooth", block: "start", inline:
 "start"});
   await scrollend_promise;
@@ -55,7 +54,7 @@ promise_test(async (t) => {
   var expected_y = content.offsetTop + (content_height - window_height) / 2;
   assert_not_equals(window.scrollX, expected_x, "scrollX");
   assert_not_equals(window.scrollY, expected_y, "scrollY");
-  const scrollend_promise = waitForScrollEnd(document);
+  const scrollend_promise = waitForScrollEndFallbackToDelayWithoutScrollEvent(document);
   content.scrollIntoView({behavior: "smooth", block: "center", inline:
 "center"});
   await scrollend_promise;
@@ -69,7 +68,7 @@ promise_test(async (t) => {
   var expected_y = content.offsetTop + content_height - window_height;
   assert_not_equals(window.scrollX, expected_x, "scrollX");
   assert_not_equals(window.scrollY, expected_y, "scrollY");
-  const scrollend_promise = waitForScrollEnd(document);
+  const scrollend_promise = waitForScrollEndFallbackToDelayWithoutScrollEvent(document);
   content.scrollIntoView({behavior: "smooth", block: "end", inline:
 "end"});
   await scrollend_promise;
diff --git a/tests/wpt/tests/css/cssom-view/smooth-scroll-in-load-event.html b/tests/wpt/tests/css/cssom-view/smooth-scroll-in-load-event.html
index e515b067102..dedeab99e4d 100644
--- a/tests/wpt/tests/css/cssom-view/smooth-scroll-in-load-event.html
+++ b/tests/wpt/tests/css/cssom-view/smooth-scroll-in-load-event.html
@@ -4,7 +4,7 @@
 <link rel="help" href="https://drafts.csswg.org/cssom-view/#concept-smooth-scroll">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="support/scroll-behavior.js"></script>
+<script src="/dom/events/scrolling/scroll_support.js"></script>
 <style>
   body {
     margin: 0;
@@ -35,7 +35,7 @@
       await new Promise(resolve => requestAnimationFrame(resolve));
       pageContent.style.color = "green";
 
-      await waitForScrollEnd(document.scrollingElement);
+      await waitForScrollEndFallbackToDelayWithoutScrollEvent(document);
 
       assert_equals(document.scrollingElement.scrollLeft, window.innerWidth, "Final value of scrollLeft");
       assert_equals(document.scrollingElement.scrollTop, window.innerHeight, "Final value of scrollTop");
diff --git a/tests/wpt/tests/css/cssom-view/smooth-scroll-nonstop.html b/tests/wpt/tests/css/cssom-view/smooth-scroll-nonstop.html
index 7ba6e690f90..c1a172397db 100644
--- a/tests/wpt/tests/css/cssom-view/smooth-scroll-nonstop.html
+++ b/tests/wpt/tests/css/cssom-view/smooth-scroll-nonstop.html
@@ -6,7 +6,6 @@
 <link rel="help" href="https://drafts.csswg.org/cssom-view/#concept-smooth-scroll">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="/css/css-scroll-snap/support/common.js"></script>
 <script src="/dom/events/scrolling/scroll_support.js"></script>
 </head>
 <body>
@@ -44,7 +43,7 @@
         await waitForScrollReset(test, scroller);
         await waitForCompositorCommit(test, scroller);
 
-        const scrollend_promise = waitForScrollEnd(scroller);
+        const scrollend_promise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
         const MAX_NO_MOVE_DURATION_MS = 1000;
         let resolve_stuck_promise = null;
         const stuck_promise = new Promise((resolve) => {
diff --git a/tests/wpt/tests/css/cssom-view/smooth-scrollIntoView-with-unrelated-gesture-scroll.html b/tests/wpt/tests/css/cssom-view/smooth-scrollIntoView-with-unrelated-gesture-scroll.html
index f42fcb29857..c30eda2cb5e 100644
--- a/tests/wpt/tests/css/cssom-view/smooth-scrollIntoView-with-unrelated-gesture-scroll.html
+++ b/tests/wpt/tests/css/cssom-view/smooth-scrollIntoView-with-unrelated-gesture-scroll.html
@@ -8,7 +8,6 @@
     <script src="/resources/testdriver.js"></script>
     <script src="/resources/testdriver-actions.js"></script>
     <script src="/resources/testdriver-vendor.js"></script>
-    <script src="/css/css-scroll-snap/support/common.js"></script>
     <script src="/dom/events/scrolling/scroll_support.js"></script>
   </head>
   <body>
@@ -53,8 +52,8 @@
         await waitForCompositorCommit();
 
         const scrollend_promises = [
-          waitForScrollEnd(programmatic_scroller),
-          waitForScrollEnd(gesture_scroller)
+          waitForScrollEndFallbackToDelayWithoutScrollEvent(programmatic_scroller),
+          waitForScrollEndFallbackToDelayWithoutScrollEvent(gesture_scroller)
         ]
         // As soon as we observe a scroll event, begin a gesture scroll on the
         // second scroll container.
diff --git a/tests/wpt/tests/dom/events/scrolling/scroll_support.js b/tests/wpt/tests/dom/events/scrolling/scroll_support.js
index a708364df07..1cde3a1f6b4 100644
--- a/tests/wpt/tests/dom/events/scrolling/scroll_support.js
+++ b/tests/wpt/tests/dom/events/scrolling/scroll_support.js
@@ -20,6 +20,41 @@ async function waitForScrollendEventNoTimeout(target) {
   });
 }
 
+// Waits until a rAF callback with no "scroll" event in the last 200ms.
+function waitForDelayWithoutScrollEvent(eventTarget) {
+  const TIMEOUT_IN_MS = 200;
+
+  return new Promise(resolve => {
+    let lastScrollEventTime = performance.now();
+
+    const scrollListener = () => {
+      lastScrollEventTime = performance.now();
+    };
+    eventTarget.addEventListener('scroll', scrollListener);
+
+    const tick = () => {
+      if (performance.now() - lastScrollEventTime > TIMEOUT_IN_MS) {
+        eventTarget.removeEventListener('scroll', scrollListener);
+        resolve();
+        return;
+      }
+      requestAnimationFrame(tick); // wait another frame
+    }
+    requestAnimationFrame(tick);
+  });
+}
+
+// Waits for the end of scrolling. Uses the "scrollend" event if available.
+// Otherwise, fall backs to waitForDelayWithoutScrollEvent().
+function waitForScrollEndFallbackToDelayWithoutScrollEvent(eventTarget) {
+  if (window.onscrollend !== undefined) {
+    return waitForScrollendEventNoTimeout(eventTarget);
+  }
+  return waitForScrollEvent(eventTarget).then(() => {
+    return waitForDelayWithoutScrollEvent(eventTarget);
+  });
+}
+
 async function waitForPointercancelEvent(test, target, timeoutMs = 500) {
   return waitForEvent("pointercancel", test, target, timeoutMs);
 }
diff --git a/tests/wpt/tests/editing/other/br-tag-not-added-with-inline-root-editable-element.html b/tests/wpt/tests/editing/other/br-tag-not-added-with-inline-root-editable-element.html
new file mode 100644
index 00000000000..7edf15960ab
--- /dev/null
+++ b/tests/wpt/tests/editing/other/br-tag-not-added-with-inline-root-editable-element.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+    <div id="target"><span contenteditable="true">D</span></div>
+</body>
+<script>
+    test(() => {
+        let selection = getSelection();
+        let range = document.createRange();
+        let element = document.getElementById("target").firstChild;
+        range.setStartAfter(element.firstChild);
+        range.setEndAfter(element.firstChild);
+        selection.removeAllRanges();
+        selection.addRange(range);
+        document.execCommand("delete");
+        const expectedHTML = "<span contenteditable=\"true\"></span>";
+        assert_not_equals(element.firstChild && element.firstChild.tagName, "BR", "First child is not a <br> tag");
+        assert_equals(element.outerHTML, expectedHTML, "HTML content matches the expected structure after delete");
+    }, "BR tag is not inserted after deleting the text node content since root editable element is inline");
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/editing/other/insert-br-tag-on-text-node-removal-with-non-editable-elements.html b/tests/wpt/tests/editing/other/insert-br-tag-on-text-node-removal-with-non-editable-elements.html
new file mode 100644
index 00000000000..47c0ab8d289
--- /dev/null
+++ b/tests/wpt/tests/editing/other/insert-br-tag-on-text-node-removal-with-non-editable-elements.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+    <div contenteditable="true" id="target1">A<div contenteditable="false">can't edit</div></div>
+    <div contenteditable="true" id="target2"><div contenteditable="false">can't edit</div>B<div contenteditable="false">can't edit</div></div>
+    <div contenteditable="true" id="target3"><div contenteditable="false">can't edit</div>C</div>
+</body>
+
+<script>
+    test(() => {
+        let selection = getSelection();
+        let range = document.createRange();
+        let element = document.getElementById("target1");
+        range.selectNode(element.firstChild);
+        selection.removeAllRanges();
+        selection.addRange(range);
+        document.execCommand("delete");
+        const expectedHTML = "<br><div contenteditable=\"false\">can't edit</div>";
+        assert_equals(element.firstChild.tagName, "BR", "First child is a <br> tag");
+        assert_equals(element.innerHTML, expectedHTML, "HTML content matches the expected structure after delete");
+    }, "BR tag is inserted after deleting the text node present before non editable child element");
+
+    test(() => {
+        let selection = getSelection();
+        let range = document.createRange();
+        let element = document.getElementById("target2");
+        let textNode = element.childNodes[1];
+        range.setStartAfter(textNode);
+        range.setEndAfter(textNode);
+        selection.removeAllRanges();
+        selection.addRange(range);
+        document.execCommand("delete");
+        const expectedHTML = "<div contenteditable=\"false\">can't edit</div><br><div contenteditable=\"false\">can\'t edit</div>";
+        assert_equals(element.innerHTML, expectedHTML, "HTML content matches the expected structure after delete");
+    }, "BR tag is inserted after deleting the text node present between two non editable child elements");
+
+    test(() => {
+        let selection = getSelection();
+        let range = document.createRange();
+        let element = document.getElementById("target3");
+        let textNode = element.childNodes[1];
+        range.setStartAfter(textNode);
+        range.setEndAfter(textNode);
+        selection.removeAllRanges();
+        selection.addRange(range);
+        document.execCommand("delete");
+        const expectedHTML = "<div contenteditable=\"false\">can't edit</div><br>";
+        assert_equals(element.innerHTML, expectedHTML, "HTML content matches the expected structure after delete");
+    }, "BR tag is inserted after deleting the text node present after non editable child element");
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/fenced-frame/notify-event-transient-user-activation.https.html b/tests/wpt/tests/fenced-frame/notify-event-transient-user-activation.https.html
index 04be865fe5b..5e37b1180ad 100644
--- a/tests/wpt/tests/fenced-frame/notify-event-transient-user-activation.https.html
+++ b/tests/wpt/tests/fenced-frame/notify-event-transient-user-activation.https.html
@@ -42,7 +42,11 @@
       await fencedframe.execute(() => {
         assert_false(navigator.userActivation.isActive);
       });
-    }, 'Test that notifyEvent consumes user activation.');
+
+      assert_true(navigator.userActivation.isActive);
+      assert_true(navigator.userActivation.hasBeenActive);
+    }, 'Test that notifyEvent() consumes transient user activation in the ' +
+       'fenced frame and notifies activation to the embedder.');
 
     promise_test(async (t) => {
       const fencedframe = await attachFencedFrameContext(
diff --git a/tests/wpt/tests/fetch/api/cors/cors-filtering.sub.any.js b/tests/wpt/tests/fetch/api/cors/cors-filtering.sub.any.js
index a26eaccf2a5..5f9492487f1 100644
--- a/tests/wpt/tests/fetch/api/cors/cors-filtering.sub.any.js
+++ b/tests/wpt/tests/fetch/api/cors/cors-filtering.sub.any.js
@@ -12,7 +12,6 @@ function corsFilter(corsUrl, headerName, headerValue, isFiltered) {
       } else {
         assert_false(resp.headers.has(headerName), "UA should exclude " + headerName + " header from response");
       }
-      test.done();
     });
   }, "CORS filter on " + headerName + " header");
 }
@@ -36,7 +35,6 @@ function corsExposeFilter(corsUrl, headerName, headerValue, isForbidden, withCre
       } else {
         assert_false(resp.headers.has(headerName), "UA should exclude " + headerName + " header from response");
       }
-      test.done();
     });
   }, title);
 }
@@ -54,16 +52,14 @@ corsFilter(url, "Content-Length", "3" , false); // top.txt contains "top"
 corsFilter(url, "Age", "27", true);
 corsFilter(url, "Server", "wptServe" , true);
 corsFilter(url, "Warning", "Mind the gap" , true);
-corsFilter(url, "Set-Cookie", "name=value" , true);
-corsFilter(url, "Set-Cookie2", "name=value" , true);
+corsFilter(url, "Set-Cookie", "name=value; max-age=0", true);
+corsFilter(url, "Set-Cookie2", "name=value; max-age=0", true);
 
 corsExposeFilter(url, "Age", "27", false);
 corsExposeFilter(url, "Server", "wptServe" , false);
 corsExposeFilter(url, "Warning", "Mind the gap" , false);
 
-corsExposeFilter(url, "Set-Cookie", "name=value" , true);
-corsExposeFilter(url, "Set-Cookie2", "name=value" , true);
-corsExposeFilter(url, "Set-Cookie", "name=value" , true, true);
-corsExposeFilter(url, "Set-Cookie2", "name=value" , true, true);
-
-done();
+corsExposeFilter(url, "Set-Cookie", "name=value; max-age=0" , true);
+corsExposeFilter(url, "Set-Cookie2", "name=value; max-age=0" , true);
+corsExposeFilter(url, "Set-Cookie", "name=value; max-age=0" , true, true);
+corsExposeFilter(url, "Set-Cookie2", "name=value; max-age=0" , true, true);
diff --git a/tests/wpt/tests/fetch/api/request/destination/fetch-destination-no-load-event.https.html b/tests/wpt/tests/fetch/api/request/destination/fetch-destination-no-load-event.https.html
index 1778bf2581a..2fb4aaebc04 100644
--- a/tests/wpt/tests/fetch/api/request/destination/fetch-destination-no-load-event.https.html
+++ b/tests/wpt/tests/fetch/api/request/destination/fetch-destination-no-load-event.https.html
@@ -57,6 +57,20 @@ promise_test(async t => {
     await waitOnMessageFromSW(t);
 }, 'Background image fetches with an "image" Request.destination');
 
+// SVG use element - image destination
+// See for discussion https://github.com/whatwg/fetch/issues/1012.
+promise_test(async t => {
+    const doc = frame.contentWindow.document;
+
+    let svg = doc.createElementNS("http://www.w3.org/2000/svg", "svg");
+    let use = doc.createElementNS("http://www.w3.org/2000/svg", "use");
+    use.setAttribute("href", "dummy.svg?t=use&dest=image#ref");
+    svg.appendChild(use);
+    doc.body.appendChild(svg);
+
+    await waitOnMessageFromSW(t);
+}, 'SVG use element fetches with an "image" Request.destination');
+
 // Font destination
 ///////////////////
 
diff --git a/tests/wpt/tests/file-system-access/getDirectory.https.any.js b/tests/wpt/tests/file-system-access/getDirectory.https.any.js
index 6921ab6fc3b..69fd01597d3 100644
--- a/tests/wpt/tests/file-system-access/getDirectory.https.any.js
+++ b/tests/wpt/tests/file-system-access/getDirectory.https.any.js
@@ -3,28 +3,30 @@
 
 promise_test(async t => {
   const fileName = 'testFile';
+  const directory = await navigator.storage.getDirectory();
+
   t.add_cleanup(async () => {
     try {
-      await parent.removeEntry(fileName);
+      await directory.removeEntry(fileName);
     } catch {
       // Ignore any errors in case the test failed.
     }
   });
 
-  const directory = await navigator.storage.getDirectory();
   return directory.getFileHandle(fileName, {create: true});
 }, 'Call getFileHandle successfully');
 
 promise_test(async t => {
   const directoryName = 'testDirectory';
+  const directory = await navigator.storage.getDirectory();
+
   t.add_cleanup(async () => {
     try {
-      await parent.removeEntry(fileName, {recursive: true});
+      await directory.removeEntry(directoryName, {recursive: true});
     } catch {
       // Ignore any errors in case the test failed.
     }
   });
 
-  const directory = await navigator.storage.getDirectory();
   return directory.getDirectoryHandle(directoryName, {create: true});
 }, 'Call getDirectoryHandle successfully');
diff --git a/tests/wpt/tests/fledge/tentative/get-interest-group-auction-data.https.window.js b/tests/wpt/tests/fledge/tentative/get-interest-group-auction-data.https.window.js
index fbd75badbc7..ec7a873fd51 100644
--- a/tests/wpt/tests/fledge/tentative/get-interest-group-auction-data.https.window.js
+++ b/tests/wpt/tests/fledge/tentative/get-interest-group-auction-data.https.window.js
@@ -6,7 +6,9 @@
 // META: script=/common/subset-tests.js
 // META: timeout=long
 // META: variant=?1-4
-// META: variant=?5-last
+// META: variant=?5-8
+// META: variant=?9-12
+// META: variant=?13-16
 
 // These tests focus on the navigator.getInterestGroupAdAuctionData() method.
 
@@ -30,6 +32,71 @@ subsetTest(promise_test, async test => {
   assert_true(result.request.length === 0);
 }, 'getInterestGroupAdAuctionData() with no interest groups returns a zero length result.');
 
+async function testInvalidConfig(test, configObj, desc) {
+  await promise_rejects_js(
+      test, TypeError, navigator.getInterestGroupAdAuctionData(configObj),
+      desc);
+}
+
+subsetTest(promise_test, async test => {
+  await testInvalidConfig(test, {}, 'no seller');
+  await testInvalidConfig(test, {seller: 'example'}, 'invalid seller 1');
+  await testInvalidConfig(
+      test, {seller: 'http://example.org'}, 'invalid seller 2');
+  await testInvalidConfig(
+      test, {seller: 'https://example.org', coordinatorOrigin: 'example'},
+      'invalid coordinator 1');
+  await testInvalidConfig(
+      test, {seller: 'https://example.org', coordinatorOrigin: 'example.org'},
+      'invalid coordinator 2');
+
+  await testInvalidConfig(
+      test, {seller: 'https://example.org', perBuyerConfig: {'a': {}}},
+      'invalid buyer 1');
+
+  await testInvalidConfig(
+      test,
+      {seller: 'https://example.org', perBuyerConfig: {'http://a.com': {}}},
+      'invalid buyer 2');
+
+  await testInvalidConfig(
+      test, {
+        seller: 'https://example.org',
+        perBuyerConfig: {'https://a.com': {}, 'http://b.com': {}}
+      },
+      'invalid buyer 3');
+
+  await testInvalidConfig(
+      test, {
+        seller: 'https://example.org',
+        perBuyerConfig: {'https://a.com': {}, 'https://b.com': {}}
+      },
+      'missing size info w/per-buyer config 1');
+
+  await testInvalidConfig(
+      test, {
+        seller: 'https://example.org',
+        perBuyerConfig:
+            {'https://a.com': {targetSize: 400}, 'https://b.com': {}}
+      },
+      'missing size info w/per-buyer config 2');
+
+  // These two actually succeed.
+  let result = await navigator.getInterestGroupAdAuctionData({
+    seller: 'https://example.org',
+    perBuyerConfig:
+        {'https://a.com': {targetSize: 400}, 'https://b.com': {targetSize: 500}}
+  });
+  assert_true(result.requestId !== null);
+
+  result = await navigator.getInterestGroupAdAuctionData({
+    seller: 'https://example.org',
+    perBuyerConfig: {'https://a.com': {targetSize: 400}, 'https://b.com': {}},
+    requestSize: 5000
+  });
+  assert_true(result.requestId !== null);
+}, 'getInterestGroupAdAuctionData() config checks');
+
 subsetTest(promise_test, async test => {
   const uuid = generateUuid(test);
   await joinInterestGroup(test, uuid);
@@ -47,6 +114,8 @@ subsetTest(promise_test, async test => {
   assert_equals(ig.name, DEFAULT_INTEREST_GROUP_NAME);
   assert_array_equals(ig.ads, []);
   assert_equals(ig.browserSignals.joinCount, 1, 'joinCount');
+  assert_equals(ig.browserSignals.bidCount, 0, 'bidCount');
+  assert_array_equals(ig.browserSignals.prevWins, []);
 }, 'getInterestGroupAdAuctionData() with one interest group returns a valid result.');
 
 subsetTest(promise_test, async test => {
@@ -70,6 +139,8 @@ subsetTest(promise_test, async test => {
   assert_equals(ig.name, DEFAULT_INTEREST_GROUP_NAME);
   assert_array_equals(ig.ads, ['a', 'b']);
   assert_equals(ig.browserSignals.joinCount, 1, 'joinCount');
+  assert_equals(ig.browserSignals.bidCount, 0, 'bidCount');
+  assert_array_equals(ig.browserSignals.prevWins, []);
 }, 'getInterestGroupAdAuctionData() with one interest group with two ads w/renderIds.');
 
 subsetTest(promise_test, async test => {
@@ -124,3 +195,374 @@ subsetTest(promise_test, async test => {
   assert_equals(ig.ads[1].adRenderId, adsArray[1].adRenderId, 'adRenderId 1');
   assert_equals(ig.browserSignals.joinCount, 1, 'joinCount');
 }, 'getInterestGroupAdAuctionData() with one interest group with two ads w/renderIds and include-full-ads.');
+
+// Returns an AuctionAdInterestGroup that sets all fields that can be exported
+// via getInterestGroupAdAuctionData().
+function makeTemplateIgConfig(uuid) {
+  const adsArray = [
+    {
+      renderURL: createRenderURL(uuid) + '&a',
+      adRenderId: 'a',
+      metadata: 'ada',
+      sizeGroup: 'small'
+    },
+    {
+      renderURL: createRenderURL(uuid) + '&b',
+      adRenderId: 'b',
+      metadata: 'adb',
+      sizeGroup: 'big'
+    }
+  ];
+  const adComponentsArray = [
+    {
+      renderURL: 'https://example.org/ca',
+      adRenderId: 'ca',
+      metadata: 'compa',
+      sizeGroup: 'big'
+    },
+    {
+      renderURL: 'https://example.org/cb',
+      adRenderId: 'cb',
+      metadata: 'compb',
+      sizeGroup: 'small'
+    },
+    {
+      renderURL: 'https://example.org/cc',
+      adRenderId: 'cc',
+      metadata: 'compc',
+      sizeGroup: 'big'
+    },
+  ];
+  return {
+    ads: adsArray,
+    adComponents: adComponentsArray,
+    adSizes: {
+      's': {width: '100px', height: '30px'},
+      'xl': {width: '1000px', height: '300px'}
+    },
+    sizeGroups: {'small': ['s'], 'big': ['xl']},
+    trustedBiddingSignalsKeys: ['alpha', 'beta'],
+    userBiddingSignals: 14
+  };
+}
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+  const igConfig = makeTemplateIgConfig(uuid);
+  igConfig.auctionServerRequestFlags = ['include-full-ads'];
+  await joinInterestGroup(test, uuid, igConfig);
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+  let ig = validateWithOneIg(decoded);
+
+  assert_equals(ig.name, DEFAULT_INTEREST_GROUP_NAME);
+  assert_true(ig.ads instanceof Array);
+  assert_equals(ig.ads.length, 2, '# of ads');
+  assert_equals(ig.ads[0].renderURL, igConfig.ads[0].renderURL, 'renderURL 0');
+  assert_equals(ig.ads[1].renderURL, igConfig.ads[1].renderURL, 'renderURL 1');
+  assert_equals(ig.ads[0].adRenderId, 'a', 'adRenderId 0');
+  assert_equals(ig.ads[1].adRenderId, 'b', 'adRenderId 1');
+  assert_equals(ig.ads[0].metadata, '"ada"', 'metadata 0');
+  assert_equals(ig.ads[1].metadata, '"adb"', 'metadata 1');
+  assert_equals(ig.ads[0].sizeGroup, 'small', 'sizegroup 0');
+  assert_equals(ig.ads[1].sizeGroup, 'big', 'sizegroup 1');
+
+  assert_true(ig.components instanceof Array);
+  assert_equals(ig.components.length, 3, '# of component ads');
+  assert_equals(
+      ig.components[0].renderURL, igConfig.adComponents[0].renderURL,
+      'component renderURL 0');
+  assert_equals(
+      ig.components[1].renderURL, igConfig.adComponents[1].renderURL,
+      'component renderURL 1');
+  assert_equals(
+      ig.components[2].renderURL, igConfig.adComponents[2].renderURL,
+      'component renderURL 2');
+  assert_equals(ig.components[0].adRenderId, 'ca', 'component adRenderId 0');
+  assert_equals(ig.components[1].adRenderId, 'cb', 'component adRenderId 1');
+  assert_equals(ig.components[2].adRenderId, 'cc', 'component adRenderId 2');
+  assert_equals(ig.components[0].metadata, '"compa"', 'component metadata 0');
+  assert_equals(ig.components[1].metadata, '"compb"', 'component metadata 1');
+  assert_equals(ig.components[2].metadata, '"compc"', 'component metadata 2');
+  assert_equals(ig.components[0].sizeGroup, 'big', 'component sizegroup 0');
+  assert_equals(ig.components[1].sizeGroup, 'small', 'component sizegroup 1');
+  assert_equals(ig.components[2].sizeGroup, 'big', 'component sizegroup 2');
+
+  assert_true(ig.biddingSignalsKeys instanceof Array);
+  assert_array_equals(ig.biddingSignalsKeys, ['alpha', 'beta']);
+  assert_equals(ig.userBiddingSignals, '14');
+}, 'getInterestGroupAdAuctionData() all IG data fields, with include-full-ads');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+  const igConfig = makeTemplateIgConfig(uuid);
+  await joinInterestGroup(test, uuid, igConfig);
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+  let ig = validateWithOneIg(decoded);
+
+  assert_equals(ig.name, DEFAULT_INTEREST_GROUP_NAME);
+  assert_array_equals(ig.ads, ['a', 'b']);
+
+  assert_true(ig.components instanceof Array);
+  assert_array_equals(ig.ads, ['a', 'b']);
+  assert_array_equals(ig.components, ['ca', 'cb', 'cc']);
+
+  assert_array_equals(ig.biddingSignalsKeys, ['alpha', 'beta']);
+  assert_equals(ig.userBiddingSignals, '14');
+}, 'getInterestGroupAdAuctionData() all IG data fields, w/o include-full-ads');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+
+  const igConfig = makeTemplateIgConfig(uuid);
+  igConfig.auctionServerRequestFlags = ['omit-user-bidding-signals'];
+  await joinInterestGroup(test, uuid, igConfig);
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+  let ig = validateWithOneIg(decoded);
+
+  assert_equals(ig.name, DEFAULT_INTEREST_GROUP_NAME);
+  assert_array_equals(ig.ads, ['a', 'b']);
+
+  assert_true(ig.components instanceof Array);
+  assert_array_equals(ig.ads, ['a', 'b']);
+  assert_array_equals(ig.components, ['ca', 'cb', 'cc']);
+
+  assert_array_equals(ig.biddingSignalsKeys, ['alpha', 'beta']);
+  assert_false('userBiddingSignals' in ig, 'userBiddingSignals');
+}, 'getInterestGroupAdAuctionData() all IG data fields, with omit-user-bidding-signals');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+
+  const igConfig = makeTemplateIgConfig(uuid);
+
+  // Join twice.
+  await joinInterestGroup(test, uuid, igConfig);
+  await joinInterestGroup(test, uuid, igConfig);
+
+  // And run an auction. This is a local auction, not a B&A one, run to update
+  // bid/win stats.
+  await runBasicFledgeAuctionAndNavigate(test, uuid);
+  await waitForObservedRequests(
+      uuid, [createBidderReportURL(uuid), createSellerReportURL(uuid)]);
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+  let ig = validateWithOneIg(decoded);
+  assert_equals(ig.browserSignals.joinCount, 2, 'joinCount');
+  assert_equals(ig.browserSignals.bidCount, 1, 'bidCount');
+
+  // Recency is the # of seconds since the join. We can't exactly say what it
+  // is, but it shouldn't be too huge.
+  assert_true(typeof ig.browserSignals.recency === 'number');
+  assert_between_inclusive(
+      ig.browserSignals.recency, 0, 60, 'Recency is between 0 and 60 seconds');
+  // It's also supposed to be an integer.
+  assert_equals(
+      ig.browserSignals.recency, Math.round(ig.browserSignals.recency),
+      'Recency is an integer');
+
+  // One win. The format here depends highly on whether full ads are used or
+  // not.
+  assert_true(
+      ig.browserSignals.prevWins instanceof Array, 'prevWins is an array');
+  assert_equals(ig.browserSignals.prevWins.length, 1, 'prevWins length');
+  assert_true(
+      ig.browserSignals.prevWins[0] instanceof Array,
+      'prevWins[0] is an array');
+  assert_equals(ig.browserSignals.prevWins[0].length, 2, 'prevWins[0] length');
+
+  // prevWins[0][0] is the time delta in second again.
+  let prevWinTime = ig.browserSignals.prevWins[0][0];
+  assert_true(typeof prevWinTime === 'number');
+  assert_between_inclusive(
+      prevWinTime, 0, 60, 'prevWinTime is between 0 and 60 seconds');
+  // It's also supposed to be an integer.
+  assert_equals(
+      prevWinTime, Math.round(prevWinTime), 'prevWinTime is an integer');
+
+  // prevWins[0][1] is the adRenderId of the winner.
+  assert_equals(ig.browserSignals.prevWins[0][1], 'a');
+}, 'getInterestGroupAdAuctionData() browserSignals');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+
+  const igConfig = makeTemplateIgConfig(uuid);
+  igConfig.auctionServerRequestFlags = ['include-full-ads'];
+
+  // Join twice.
+  await joinInterestGroup(test, uuid, igConfig);
+  await joinInterestGroup(test, uuid, igConfig);
+
+  // And run an auction. This is a local auction, not a B&A one, run to update
+  // bid/win stats.
+  await runBasicFledgeAuctionAndNavigate(test, uuid);
+  await waitForObservedRequests(
+      uuid, [createBidderReportURL(uuid), createSellerReportURL(uuid)]);
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+  let ig = validateWithOneIg(decoded);
+  assert_equals(ig.browserSignals.joinCount, 2, 'joinCount');
+  assert_equals(ig.browserSignals.bidCount, 1, 'bidCount');
+
+  // Recency is the # of seconds since the join. We can't exactly say what it
+  // is, but it shouldn't be too huge.
+  assert_true(typeof ig.browserSignals.recency === 'number');
+  assert_between_inclusive(
+      ig.browserSignals.recency, 0, 60, 'Recency is between 0 and 60 seconds');
+  // It's also supposed to be an integer.
+  assert_equals(
+      ig.browserSignals.recency, Math.round(ig.browserSignals.recency),
+      'Recency is an integer');
+
+  // One win. The format here depends highly on whether full ads are used or
+  // not.
+  assert_true(
+      ig.browserSignals.prevWins instanceof Array, 'prevWins is an array');
+  assert_equals(ig.browserSignals.prevWins.length, 1, 'prevWins length');
+  assert_true(
+      ig.browserSignals.prevWins[0] instanceof Array,
+      'prevWins[0] is an array');
+  assert_equals(ig.browserSignals.prevWins[0].length, 2, 'prevWins[0] length');
+
+  // prevWins[0][0] is the time delta in second again.
+  let prevWinTime = ig.browserSignals.prevWins[0][0];
+  assert_true(typeof prevWinTime === 'number');
+  assert_between_inclusive(
+      prevWinTime, 0, 60, 'prevWinTime is between 0 and 60 seconds');
+  // It's also supposed to be an integer.
+  assert_equals(
+      prevWinTime, Math.round(prevWinTime), 'prevWinTime is an integer');
+
+  // prevWins[0][1] is an ad object w/include-full-ads on (with renderURL,
+  // metadata, and adRenderId).
+  let prevWinAd = ig.browserSignals.prevWins[0][1];
+  assert_equals(
+      prevWinAd.renderURL, igConfig.ads[0].renderURL, 'prevWin ad renderURL');
+  assert_equals(prevWinAd.metadata, '"ada"', 'prevWin ad metadata');
+  assert_equals(prevWinAd.adRenderId, 'a', 'prevWin ad adRenderId');
+}, 'getInterestGroupAdAuctionData() browserSignals with include-full-ads');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+
+  const igTemplate = makeTemplateIgConfig(uuid);
+  await joinInterestGroup(test, uuid, {...igTemplate, name: 'first'});
+  await joinInterestGroup(test, uuid, {...igTemplate, name: 'second'});
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+  assert_equals(decoded.message.version, 0);
+  assert_equals(decoded.message.publisher, window.location.hostname);
+  assert_equals(typeof decoded.message.generationId, 'string');
+
+  let origin = window.location.origin;
+  let igMapKeys = Object.getOwnPropertyNames(decoded.message.interestGroups);
+  assert_array_equals(igMapKeys, [origin]);
+  assert_equals(decoded.message.interestGroups[origin].length, 2);
+  let names = [
+    decoded.message.interestGroups[origin][0].name,
+    decoded.message.interestGroups[origin][1].name
+  ];
+  assert_array_equals(names.sort(), ['first', 'second']);
+}, 'getInterestGroupAdAuctionData() with multiple interest groups');
+
+async function joinCrossOriginIG(test, uuid, origin, name) {
+  let iframe = await createIframe(test, origin, 'join-ad-interest-group');
+  await runInFrame(
+      test, iframe,
+      `await joinInterestGroup(test_instance, "${uuid}", {name: "${name}"});`);
+}
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+
+  await joinCrossOriginIG(test, uuid, OTHER_ORIGIN1, 'o1');
+  await joinCrossOriginIG(test, uuid, OTHER_ORIGIN2, 'o2');
+  await joinCrossOriginIG(test, uuid, OTHER_ORIGIN3, 'o3');
+  await joinCrossOriginIG(test, uuid, OTHER_ORIGIN4, 'o4');
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+  assert_equals(decoded.message.version, 0);
+  assert_equals(decoded.message.publisher, window.location.hostname);
+  assert_equals(typeof decoded.message.generationId, 'string');
+  let igMapKeys = Object.getOwnPropertyNames(decoded.message.interestGroups);
+  assert_array_equals(
+      igMapKeys.sort(),
+      [OTHER_ORIGIN1, OTHER_ORIGIN2, OTHER_ORIGIN3, OTHER_ORIGIN4].sort());
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN1].length, 1);
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN1][0].name, 'o1');
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN2].length, 1);
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN2][0].name, 'o2');
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN3].length, 1);
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN3][0].name, 'o3');
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN4].length, 1);
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN4][0].name, 'o4');
+}, 'getInterestGroupAdAuctionData() with multiple buyers');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+
+  await joinCrossOriginIG(test, uuid, OTHER_ORIGIN1, 'o1');
+  await joinCrossOriginIG(test, uuid, OTHER_ORIGIN2, 'o2');
+  await joinCrossOriginIG(test, uuid, OTHER_ORIGIN3, 'o3');
+  await joinCrossOriginIG(test, uuid, OTHER_ORIGIN4, 'o4');
+
+  let config = {
+    seller: window.location.origin,
+    perBuyerConfig: {},
+    requestSize: 5000
+  };
+  config.perBuyerConfig[OTHER_ORIGIN2] = {};
+  config.perBuyerConfig[OTHER_ORIGIN3] = {};
+  const result = await navigator.getInterestGroupAdAuctionData(config);
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+  assert_equals(decoded.message.version, 0);
+  assert_equals(decoded.message.publisher, window.location.hostname);
+  assert_equals(typeof decoded.message.generationId, 'string');
+  let igMapKeys = Object.getOwnPropertyNames(decoded.message.interestGroups);
+  assert_array_equals(igMapKeys.sort(), [OTHER_ORIGIN2, OTHER_ORIGIN3].sort());
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN2].length, 1);
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN2][0].name, 'o2');
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN3].length, 1);
+  assert_equals(decoded.message.interestGroups[OTHER_ORIGIN3][0].name, 'o3');
+}, 'getInterestGroupAdAuctionData() uses perBuyerConfig to select buyers');
diff --git a/tests/wpt/tests/fledge/tentative/resources/ba-fledge-util.sub.js b/tests/wpt/tests/fledge/tentative/resources/ba-fledge-util.sub.js
index 1c9f051d9d3..c534a8a6c62 100644
--- a/tests/wpt/tests/fledge/tentative/resources/ba-fledge-util.sub.js
+++ b/tests/wpt/tests/fledge/tentative/resources/ba-fledge-util.sub.js
@@ -220,6 +220,26 @@ function _sortForCbor(input) {
   }
 }
 
+// Works on both ArrayBuffer and Uint8Array, returns the same type.
+function _injectFault(input) {
+  let uint8Input;
+  if (input instanceof ArrayBuffer) {
+    uint8Input = new Uint8Array(input);
+  } else {
+    assert_true(input instanceof Uint8Array);
+    uint8Input = input;
+  }
+
+  // Just mess up the 0th byte.
+  uint8Input[0] = uint8Input[0] ^ 0x4e;
+
+  if (input instanceof ArrayBuffer) {
+    return _toArrayBuffer(uint8Input);
+  } else {
+    return uint8Input;
+  }
+}
+
 // Exported API.
 
 // Decodes the request payload produced by getInterestGroupAdAuctionData into
@@ -279,13 +299,36 @@ BA.decodeInterestGroupData = async function(igData) {
   };
 };
 
+BA.injectCborFault = 1;
+BA.injectGzipFault = 2;
+BA.injectFrameFault = 4;
+BA.injectEncryptFault = 8;
+
 // Encodes, compresses, encrypts, etc., `responseObject` into a proper
 // serverResponse in reply to `decoded`.
-BA.encodeServerResponse = async function(responseObject, decoded) {
+BA.encodeServerResponse =
+    async function(responseObject, decoded, injectFaults = 0) {
   let cborPayload = new Uint8Array(CBOR.encode(_sortForCbor(responseObject)));
+  if (injectFaults & BA.injectCborFault) {
+    cborPayload = _injectFault(cborPayload);
+  }
+
   let gzipPayload = await _gzip(cborPayload);
+  if (injectFaults & BA.injectGzipFault) {
+    gzipPayload = _injectFault(gzipPayload);
+  }
+
   let framedPayload = _toArrayBuffer(_frameServerResponse(gzipPayload));
-  return await _encryptServerResponse(framedPayload, decoded);
+  if (injectFaults & BA.injectFrameFault) {
+    framedPayload = _injectFault(framedPayload);
+  }
+
+  let encrypted = await _encryptServerResponse(framedPayload, decoded);
+  if (injectFaults & BA.injectEncryptFault) {
+    encrypted = _injectFault(encrypted);
+  }
+
+  return encrypted;
 };
 
 // Returns a hash string that can be used to authorize a given response,
diff --git a/tests/wpt/tests/fledge/tentative/server-response.https.window.js b/tests/wpt/tests/fledge/tentative/server-response.https.window.js
index 918dffefedd..3e1011d4229 100644
--- a/tests/wpt/tests/fledge/tentative/server-response.https.window.js
+++ b/tests/wpt/tests/fledge/tentative/server-response.https.window.js
@@ -6,6 +6,8 @@
 // META: script=/common/subset-tests.js
 // META: timeout=long
 // META: variant=?1-4
+// META: variant=?5-8
+// META: variant=?9-12
 
 // These tests focus on the serverResponse field in AuctinConfig, e.g.
 // auctions involving bidding and auction services.
@@ -41,7 +43,6 @@ subsetTest(promise_test, async test => {
 
   let auctionResult = await navigator.runAdAuction({
     'seller': window.location.origin,
-    'interestGroupBuyers': [window.location.origin],
     'requestId': result.requestId,
     'serverResponse': serverResponse,
     'resolveToConfig': true,
@@ -88,7 +89,6 @@ subsetTest(promise_test, async test => {
 
   let auctionResult = await navigator.runAdAuction({
     'seller': window.location.origin,
-    'interestGroupBuyers': [window.location.origin],
     'requestId': result.requestId,
     'serverResponse': serverResponse,
     'resolveToConfig': true,
@@ -97,3 +97,308 @@ subsetTest(promise_test, async test => {
   createAndNavigateFencedFrame(test, auctionResult);
   await waitForObservedRequests(uuid, [adB, trackBuyer, trackSeller]);
 }, 'Basic B&A auction with reporting URLs');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+  const adA = createTrackerURL(window.location.origin, uuid, 'track_get', 'a');
+  const adB = createTrackerURL(window.location.origin, uuid, 'track_get', 'b');
+  const adsArray =
+      [{renderURL: adA, adRenderId: 'a'}, {renderURL: adB, adRenderId: 'b'}];
+  await joinInterestGroup(test, uuid, {
+    ads: adsArray,
+    biddingLogicURL: createBiddingScriptURL({allowComponentAuction: true})
+  });
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+
+  // The server-side auction uses a bid of 10, for second ad, so it should
+  // win over the client-side component auctions bid of 9.
+  let serverResponseMsg = {
+    'biddingGroups': {},
+    'adRenderURL': adsArray[1].renderURL,
+    'interestGroupName': DEFAULT_INTEREST_GROUP_NAME,
+    'interestGroupOwner': window.location.origin,
+    'topLevelSeller': window.location.origin,
+    'bid': 10,
+  };
+  serverResponseMsg.biddingGroups[window.location.origin] = [0];
+
+  let serverResponse =
+      await BA.encodeServerResponse(serverResponseMsg, decoded);
+
+  let hashString = await BA.payloadHash(serverResponse);
+  await BA.authorizeServerResponseHashes([hashString]);
+
+  let auctionConfig = {
+    seller: window.location.origin,
+    decisionLogicURL: createDecisionScriptURL(uuid),
+    interestGroupBuyers: [],
+    resolveToConfig: true,
+    componentAuctions: [
+      {
+        seller: window.location.origin,
+        decisionLogicURL: createDecisionScriptURL(uuid),
+        interestGroupBuyers: [window.location.origin],
+      },
+      {
+        seller: window.location.origin,
+        requestId: result.requestId,
+        serverResponse: serverResponse,
+      }
+    ]
+  };
+
+  let auctionResult = await navigator.runAdAuction(auctionConfig);
+  expectSuccess(auctionResult);
+  createAndNavigateFencedFrame(test, auctionResult);
+  await waitForObservedRequests(uuid, [adB]);
+}, 'Hybrid B&A auction');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+  const adA = createTrackerURL(window.location.origin, uuid, 'track_get', 'a');
+  const adB = createTrackerURL(window.location.origin, uuid, 'track_get', 'b');
+  const adsArray =
+      [{renderURL: adA, adRenderId: 'a'}, {renderURL: adB, adRenderId: 'b'}];
+  await joinInterestGroup(test, uuid, {
+    ads: adsArray,
+    biddingLogicURL: createBiddingScriptURL({allowComponentAuction: true})
+  });
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+
+  // The server-side auction uses a bid of 10, for second ad, so it should
+  // win over the client-side component auctions bid of 9.
+  const trackServerSeller = createSellerReportURL(uuid);
+  const trackBuyer = createBidderReportURL(uuid);
+  let serverResponseMsg = {
+    'biddingGroups': {},
+    'adRenderURL': adsArray[1].renderURL,
+    'interestGroupName': DEFAULT_INTEREST_GROUP_NAME,
+    'interestGroupOwner': window.location.origin,
+    'topLevelSeller': window.location.origin,
+    'bid': 10,
+    'winReportingURLs': {
+      'buyerReportingURLs': {'reportingURL': trackBuyer},
+      'componentSellerReportingURLs': {'reportingURL': trackServerSeller}
+    }
+  };
+  serverResponseMsg.biddingGroups[window.location.origin] = [0];
+
+  let serverResponse =
+      await BA.encodeServerResponse(serverResponseMsg, decoded);
+
+  let hashString = await BA.payloadHash(serverResponse);
+  await BA.authorizeServerResponseHashes([hashString]);
+
+  let trackTopSeller = createSellerReportURL(uuid, 'top');
+  let trackClientSeller = createSellerReportURL(uuid, 'client');
+  let auctionConfig = {
+    seller: window.location.origin,
+    decisionLogicURL: createDecisionScriptURL(
+        uuid, {reportResult: `sendReportTo("${trackTopSeller}")`}),
+    interestGroupBuyers: [],
+    resolveToConfig: true,
+    componentAuctions: [
+      {
+        seller: window.location.origin,
+        decisionLogicURL: createDecisionScriptURL(
+            uuid, {reportResult: `sendReportTo("${trackClientSeller}")`}),
+        interestGroupBuyers: [window.location.origin],
+      },
+      {
+        seller: window.location.origin,
+        requestId: result.requestId,
+        serverResponse: serverResponse,
+      }
+    ]
+  };
+
+  let auctionResult = await navigator.runAdAuction(auctionConfig);
+  expectSuccess(auctionResult);
+  createAndNavigateFencedFrame(test, auctionResult);
+  await waitForObservedRequests(
+      uuid, [adB, trackBuyer, trackServerSeller, trackTopSeller]);
+}, 'Hybrid B&A auction with reporting URLs');
+
+async function runFaultInjectTest(test, fault) {
+  const uuid = generateUuid(test);
+  const adA = 'https://example.org/a';
+  const adB = 'https://example.org/b';
+  const adsArray =
+      [{renderURL: adA, adRenderId: 'a'}, {renderURL: adB, adRenderId: 'b'}];
+  await joinInterestGroup(test, uuid, {ads: adsArray});
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+
+  let serverResponseMsg = {
+    'biddingGroups': {},
+    'adRenderURL': adsArray[0].renderURL,
+    'interestGroupName': DEFAULT_INTEREST_GROUP_NAME,
+    'interestGroupOwner': window.location.origin,
+  };
+  serverResponseMsg.biddingGroups[window.location.origin] = [0];
+
+  let serverResponse =
+      await BA.encodeServerResponse(serverResponseMsg, decoded, fault);
+
+  let hashString = await BA.payloadHash(serverResponse);
+  await BA.authorizeServerResponseHashes([hashString]);
+
+  let auctionResult = await navigator.runAdAuction({
+    'seller': window.location.origin,
+    'requestId': result.requestId,
+    'serverResponse': serverResponse,
+    'resolveToConfig': true,
+  });
+  expectNoWinner(auctionResult);
+}
+
+subsetTest(promise_test, async test => {
+  return runFaultInjectTest(test, BA.injectCborFault);
+}, 'Basic B&A auction - fault inject at CBOR');
+
+subsetTest(promise_test, async test => {
+  return runFaultInjectTest(test, BA.injectGzipFault);
+}, 'Basic B&A auction - fault inject at gzip');
+
+subsetTest(promise_test, async test => {
+  return runFaultInjectTest(test, BA.injectFrameFault);
+}, 'Basic B&A auction - fault inject at framing');
+
+subsetTest(promise_test, async test => {
+  return runFaultInjectTest(test, BA.injectEncryptFault);
+}, 'Basic B&A auction - fault inject at encryption');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+  const adA = 'https://example.org/a';
+  const adB = 'https://example.org/b';
+  const adsArray =
+      [{renderURL: adA, adRenderId: 'a'}, {renderURL: adB, adRenderId: 'b'}];
+  await joinInterestGroup(test, uuid, {ads: adsArray});
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+
+  let serverResponseMsg = {
+    'biddingGroups': {},
+    'adRenderURL': adsArray[0].renderURL,
+    'interestGroupName': DEFAULT_INTEREST_GROUP_NAME,
+    'interestGroupOwner': window.location.origin,
+  };
+  serverResponseMsg.biddingGroups[window.location.origin] = [0];
+
+  let serverResponse =
+      await BA.encodeServerResponse(serverResponseMsg, decoded);
+
+  // Mess up the array for a bit before computing hash to get the wrong hash,
+  // then undo.
+  serverResponse[0] ^= 0xBE;
+  let hashString = await BA.payloadHash(serverResponse);
+  await BA.authorizeServerResponseHashes([hashString]);
+  serverResponse[0] ^= 0xBE;
+
+  let auctionResult = await navigator.runAdAuction({
+    'seller': window.location.origin,
+    'requestId': result.requestId,
+    'serverResponse': serverResponse,
+    'resolveToConfig': true,
+  });
+  expectNoWinner(auctionResult);
+}, 'Basic B&A auction - Wrong authorization');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+  const adA = 'https://example.org/a';
+  const adB = 'https://example.org/b';
+  const adsArray =
+      [{renderURL: adA, adRenderId: 'a'}, {renderURL: adB, adRenderId: 'b'}];
+  await joinInterestGroup(test, uuid, {ads: adsArray});
+
+  const result =
+      await navigator.getInterestGroupAdAuctionData({seller: OTHER_ORIGIN1});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+
+  let serverResponseMsg = {
+    'biddingGroups': {},
+    'adRenderURL': adsArray[0].renderURL,
+    'interestGroupName': DEFAULT_INTEREST_GROUP_NAME,
+    'interestGroupOwner': window.location.origin,
+  };
+  serverResponseMsg.biddingGroups[window.location.origin] = [0];
+
+  let serverResponse =
+      await BA.encodeServerResponse(serverResponseMsg, decoded);
+
+  let hashString = await BA.payloadHash(serverResponse);
+  await BA.authorizeServerResponseHashes([hashString]);
+
+  let auctionResult = await navigator.runAdAuction({
+    'seller': window.location.origin,
+    'requestId': result.requestId,
+    'serverResponse': serverResponse,
+    'resolveToConfig': true,
+  });
+  expectNoWinner(auctionResult);
+}, 'Basic B&A auction - Wrong seller');
+
+subsetTest(promise_test, async test => {
+  const uuid = generateUuid(test);
+  const adA = 'https://example.org/a';
+  const adB = 'https://example.org/b';
+  const adsArray =
+      [{renderURL: adA, adRenderId: 'a'}, {renderURL: adB, adRenderId: 'b'}];
+  await joinInterestGroup(test, uuid, {ads: adsArray});
+
+  const result = await navigator.getInterestGroupAdAuctionData(
+      {seller: window.location.origin});
+  assert_true(result.requestId !== null);
+  assert_true(result.request.length > 0);
+
+  let decoded = await BA.decodeInterestGroupData(result.request);
+
+  let serverResponseMsg = {
+    'biddingGroups': {},
+    'adRenderURL': adsArray[0].renderURL,
+    'interestGroupName': DEFAULT_INTEREST_GROUP_NAME,
+    'interestGroupOwner': window.location.origin,
+  };
+  serverResponseMsg.biddingGroups[window.location.origin] = [0];
+
+  let serverResponse =
+      await BA.encodeServerResponse(serverResponseMsg, decoded);
+
+  let hashString = await BA.payloadHash(serverResponse);
+  await BA.authorizeServerResponseHashes([hashString]);
+
+  let auctionResult = await navigator.runAdAuction({
+    'seller': window.location.origin,
+    'requestId': token(),
+    'serverResponse': serverResponse,
+    'resolveToConfig': true,
+  });
+  expectNoWinner(auctionResult);
+}, 'Basic B&A auction - Wrong request Id');
diff --git a/tests/wpt/tests/fullscreen/api/document-exit-fullscreen-twice.html b/tests/wpt/tests/fullscreen/api/document-exit-fullscreen-twice.html
index aa8538cce4b..96c9097690c 100644
--- a/tests/wpt/tests/fullscreen/api/document-exit-fullscreen-twice.html
+++ b/tests/wpt/tests/fullscreen/api/document-exit-fullscreen-twice.html
@@ -35,12 +35,10 @@
             "fullscreenElement after second exitFullscreen()"
         );
         const eventChange = new Promise((resolve) => {
-            document.addEventListener("fullscreenchange", resolve, once);
-            document.addEventListener(
-                "fullscreenchange",
-                t.unreached_func("second event fired"),
-                once
-            );
+            document.addEventListener("fullscreenchange", () => {
+                document.addEventListener("fullscreenchange", t.unreached_func("second event fired"), once);
+                resolve();
+            }, once);
         });
 
         await Promise.all([
diff --git a/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-from-window.window.js b/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-from-window.window.js
new file mode 100644
index 00000000000..85509a15b98
--- /dev/null
+++ b/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper-tests/addWindow-from-window.window.js
@@ -0,0 +1,16 @@
+// META: title=RemoteContextHelper with defaults
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: script=./resources/test-helper.js
+
+'use strict';
+
+promise_test(async t => {
+  const rcHelper = new RemoteContextHelper();
+  const main = await rcHelper.addWindow();
+  const childWindow = await main.addWindow();
+  await assertSimplestScriptRuns(childWindow);
+  await assertOriginIsAsExpected(childWindow, location.origin);
+});
diff --git a/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js b/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
index aca83720254..6c88b49fd4a 100644
--- a/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+++ b/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
@@ -320,12 +320,9 @@
     url.searchParams.append('pipe', formattedHeaders.join('|'));
   }
 
-  function windowExecutorCreator({target = '_blank', features} = {}) {
-    return (url, documentContent) => {
-      if (url && url.substring(0, 5) == 'data:') {
-        throw new TypeError('Windows cannot use data: URLs.');
-      }
-
+  function windowExecutorCreator(
+    { target = '_blank', features } = {}, remoteContextWrapper) {
+    let openWindow = (url, target, features, documentContent) => {
       const w = window.open(url, target, features);
       if (documentContent) {
         w.document.open();
@@ -333,6 +330,19 @@
         w.document.close();
       }
     };
+
+    return (url, documentContent) => {
+      if (url && url.substring(0, 5) == 'data:') {
+        throw new TypeError('Windows cannot use data: URLs.');
+      }
+
+      if (remoteContextWrapper) {
+        return remoteContextWrapper.executeScript(
+          openWindow, [url, target, features, documentContent]);
+      } else {
+        openWindow(url, target, features, documentContent);
+      }
+    };
   }
 
   function elementExecutorCreator(
@@ -527,6 +537,23 @@
       });
     }
 
+    /**
+     * Opens a window from the remote context. @see createContext for
+     * @param {RemoteContextConfig|object} [extraConfig]
+     * @param {Object} [options]
+     * @param {string} [options.target] Passed to `window.open` as the
+     *     2nd argument
+     * @param {string} [options.features] Passed to `window.open` as the
+     *     3rd argument
+     * @returns {Promise<RemoteContextWrapper>} The remote context.
+     */
+    addWindow(extraConfig, options) {
+      return this.helper.createContext({
+        executorCreator: windowExecutorCreator(options, this),
+        extraConfig,
+      });
+    }
+
     /**
      * Adds a dedicated worker to the current document.
      * @param {string|null} [globalVariable] The name of the global variable to
diff --git a/tests/wpt/tests/html/canvas/element/compositing/2d.composite.full.mode.alpha-ref.html b/tests/wpt/tests/html/canvas/element/compositing/2d.composite.full.mode.alpha-ref.html
new file mode 100644
index 00000000000..0ae6b502a9b
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/compositing/2d.composite.full.mode.alpha-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+    <body>
+        <div id="source"></div>
+        <div id="destination"></div>
+        <script>
+            function createCanvas(parent, width, height) {
+                const canvas = document.createElement("canvas");
+                canvas.width = width;
+                canvas.height = height;
+                parent.append(canvas);
+                return canvas;
+            }
+
+            function fillRects(canvas, color, alpha, diagonal) {
+                const ctx = canvas.getContext("2d");
+                ctx.fillStyle = color;
+                ctx.globalAlpha = alpha;
+                if (diagonal == "left") {
+                    ctx.fillRect(60, 60, 50, 50);
+                    ctx.fillRect(110, 110, 50, 50);
+                } else {
+                    ctx.fillRect(60, 110, 50, 50);
+                    ctx.fillRect(110, 60, 50, 50);
+                }
+            }
+
+            fillRects(createCanvas(source, 200, 200), "#ff0000", 0.5, "left");
+            fillRects(createCanvas(source, 200, 200), "#ff0000", 0.5, "right");
+            fillRects(createCanvas(destination, 200, 200), "#777777", 0.5, "left");
+
+            let canvas = createCanvas(destination, 200, 200);
+            fillRects(canvas, "#777777", 0.5, "left");
+            fillRects(canvas, "#ff0000", 0.5, "right");
+        </script>
+    </body>
+</html>
diff --git a/tests/wpt/tests/html/canvas/element/compositing/2d.composite.full.mode.alpha.html b/tests/wpt/tests/html/canvas/element/compositing/2d.composite.full.mode.alpha.html
new file mode 100644
index 00000000000..10ff4781837
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/compositing/2d.composite.full.mode.alpha.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <link rel="match" href="2d.composite.full.mode.alpha-ref.html">
+        <meta name="fuzzy" content="maxDifference=0-1; totalPixels=0-10000" />
+    </head>
+    <body>
+        <div id="source"></div>
+        <div id="destination"></div>
+        <script>
+            function createCanvas(parent, width, height) {
+                const canvas = document.createElement("canvas");
+                canvas.width = width;
+                canvas.height = height;
+                parent.append(canvas);
+                return canvas;
+            }
+
+            function fillRects(canvas, alpha, compositeOperation) {
+                const ctx = canvas.getContext("2d");
+                ctx.fillStyle = "#777777";
+                ctx.fillRect(10, 10, 100, 100);
+                ctx.fillRect(110, 110, 100, 100);
+
+                ctx.globalCompositeOperation = compositeOperation;
+                ctx.globalAlpha = alpha;
+                ctx.fillStyle = "#ff0000";
+                ctx.fillRect(60, 60, 100, 100);
+            }
+
+            fillRects(createCanvas(source, 200, 200), 0.5, 'source-in');
+            fillRects(createCanvas(source, 200, 200), 0.5, 'source-out');
+            fillRects(createCanvas(destination, 200, 200), 0.5, `destination-in`);
+            fillRects(createCanvas(destination, 200, 200), 0.5, 'destination-atop');
+        </script>
+    </body>
+</html>
diff --git a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.html b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.html
index 4dfa1f48758..b4b022ec347 100644
--- a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.html
+++ b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.html
@@ -24,7 +24,9 @@ _addTest(function(canvas, ctx) {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.getActualBoundingBox-full-text.tentative.html b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.getActualBoundingBox-full-text.tentative.html
index e73d1a09fb5..18095ac166d 100644
--- a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.getActualBoundingBox-full-text.tentative.html
+++ b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.getActualBoundingBox-full-text.tentative.html
@@ -52,7 +52,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -112,7 +114,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -183,7 +187,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -255,7 +261,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
diff --git a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-baselines.tentative.html b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-baselines.tentative.html
index bb9184e8915..8ef5e83199c 100644
--- a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-baselines.tentative.html
+++ b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-baselines.tentative.html
@@ -35,7 +35,9 @@ _addTest(function(canvas, ctx) {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-exceptions.tentative.html b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-exceptions.tentative.html
index 3f6c83363c0..d1088a83723 100644
--- a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-exceptions.tentative.html
+++ b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects-exceptions.tentative.html
@@ -24,7 +24,9 @@ _addTest(function(canvas, ctx) {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects.tentative.html b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects.tentative.html
index df2f9605610..4cde3807fd6 100644
--- a/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects.tentative.html
+++ b/tests/wpt/tests/html/canvas/element/text/2d.text.measure.selection-rects.tentative.html
@@ -86,7 +86,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -198,7 +200,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -310,7 +314,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -422,7 +428,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -534,7 +542,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -646,7 +656,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -758,7 +770,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -870,7 +884,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -982,7 +998,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1094,7 +1112,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1206,7 +1226,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1318,7 +1340,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1441,7 +1465,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1565,7 +1591,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1689,7 +1717,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1813,7 +1843,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1937,7 +1969,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2061,7 +2095,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2185,7 +2221,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2309,7 +2347,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2433,7 +2473,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2557,7 +2599,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2681,7 +2725,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2805,7 +2851,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.html
index ef0f14dd619..160b097e007 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.html
@@ -25,7 +25,9 @@ t.step(function() {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.worker.js
index 5b5b7c76b04..3e23d836d67 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-exceptions.tentative.worker.js
@@ -20,7 +20,9 @@ t.step(function() {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-full-text.tentative.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-full-text.tentative.html
index 093731908e3..0a1362fc84f 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-full-text.tentative.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-full-text.tentative.html
@@ -51,7 +51,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -111,7 +113,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -182,7 +186,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -254,7 +260,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-full-text.tentative.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-full-text.tentative.worker.js
index 54a4cb41154..54de2eb97bb 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-full-text.tentative.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.getActualBoundingBox-full-text.tentative.worker.js
@@ -47,7 +47,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -107,7 +109,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -178,7 +182,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
@@ -250,7 +256,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd '
+    '-abcd ',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   ctx.font = '50px sans-serif';
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.html
index 7b0b8557d61..fc1683bcce1 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.html
@@ -36,7 +36,9 @@ t.step(function() {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.worker.js
index 6d275c042eb..bdd015eef82 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-baselines.tentative.worker.js
@@ -31,7 +31,9 @@ t.step(function() {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.html
index 2a6ee6ec26b..d23ef90c523 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.html
@@ -25,7 +25,9 @@ t.step(function() {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.worker.js
index a3fefb3b253..eff5d2ac6d5 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects-exceptions.tentative.worker.js
@@ -20,7 +20,9 @@ t.step(function() {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects.tentative.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects.tentative.html
index 79af9aa5fa2..95a8c8b4955 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects.tentative.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.selection-rects.tentative.html
@@ -85,7 +85,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -197,7 +199,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -309,7 +313,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -421,7 +427,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -533,7 +541,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -645,7 +655,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -757,7 +769,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -869,7 +883,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -981,7 +997,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1093,7 +1111,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1205,7 +1225,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1317,7 +1339,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1440,7 +1464,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1564,7 +1590,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1688,7 +1716,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1812,7 +1842,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -1936,7 +1968,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2060,7 +2094,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2184,7 +2220,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2308,7 +2346,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2432,7 +2472,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2556,7 +2598,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2680,7 +2724,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
@@ -2804,7 +2850,9 @@ test(t => {
     'UNAVAILABLE',
     '🏁🎶🏁',
     '）（あ）（',
-    '-abcd_'
+    '-abcd_',
+    'اين المكتبة؟',
+    'bidiالرياضيات'
   ]
 
   for (text of kTexts) {
diff --git a/tests/wpt/tests/html/canvas/tools/gentestutilsunion.py b/tests/wpt/tests/html/canvas/tools/gentestutilsunion.py
index 84315af983b..183a6f6e395 100644
--- a/tests/wpt/tests/html/canvas/tools/gentestutilsunion.py
+++ b/tests/wpt/tests/html/canvas/tools/gentestutilsunion.py
@@ -715,9 +715,16 @@ class _VariantGrid:
             _render(jinja_env, f'testharness_worker{grid}.js', self.params,
                     f'{output_files.offscreen}.worker.js')
 
+    def _generate_cairo_images(self, output_dirs: _OutputPaths) -> None:
+        """Generates the pycairo images found in the YAML test definition."""
+        for variant in self.variants:
+            variant.generate_expected_image(output_dirs)
+
     def generate_test(self, jinja_env: jinja2.Environment,
                       output_dirs: _OutputPaths) -> None:
         """Generate the test files to the specified output dirs."""
+        self._generate_cairo_images(output_dirs)
+
         output_files = output_dirs.sub_path(self.file_name)
 
         if self.template_type in (_TemplateType.REFERENCE,
@@ -854,9 +861,6 @@ def generate_test_files(name_to_dir_file: str) -> None:
             if test['name'] != grid.file_name:
                 print(f'  {grid.file_name}')
 
-            sub_dir = _get_test_sub_dir(grid.file_name, name_to_sub_dir)
-            output_sub_dirs = output_dirs.sub_path(sub_dir)
-
             _check_uniqueness(used_filenames, grid.file_name,
                               grid.canvas_types)
             for variant in grid.variants:
@@ -866,8 +870,7 @@ def generate_test_files(name_to_dir_file: str) -> None:
                              variant.params['grid_variant_names']),
                     grid.canvas_types)
 
-            for variant in grid.variants:
-                variant.generate_expected_image(output_sub_dirs)
-            grid.generate_test(jinja_env, output_sub_dirs)
+            sub_dir = _get_test_sub_dir(grid.file_name, name_to_sub_dir)
+            grid.generate_test(jinja_env, output_dirs.sub_path(sub_dir))
 
     print()
diff --git a/tests/wpt/tests/html/canvas/tools/yaml-new/text.yaml b/tests/wpt/tests/html/canvas/tools/yaml-new/text.yaml
index 5c6b9f8abc3..29a765be111 100644
--- a/tests/wpt/tests/html/canvas/tools/yaml-new/text.yaml
+++ b/tests/wpt/tests/html/canvas/tools/yaml-new/text.yaml
@@ -1324,7 +1324,9 @@
       'UNAVAILABLE',
       '🏁🎶🏁',
       '）（あ）（',
-      '-abcd_'
+      '-abcd_',
+      'اين المكتبة؟',
+      'bidiالرياضيات'
     ]
 
     for (text of kTexts) {
@@ -1403,7 +1405,9 @@
       'UNAVAILABLE',
       '🏁🎶🏁',
       '）（あ）（',
-      '-abcd_'
+      '-abcd_',
+      'اين المكتبة؟',
+      'bidiالرياضيات'
     ]
 
     for (const text of kTexts) {
@@ -1450,7 +1454,9 @@
       'UNAVAILABLE',
       '🏁🎶🏁',
       '）（あ）（',
-      '-abcd_'
+      '-abcd_',
+      'اين المكتبة؟',
+      'bidiالرياضيات'
     ]
 
     for (const text of kTexts) {
@@ -1623,7 +1629,9 @@
       'UNAVAILABLE',
       '🏁🎶🏁',
       '）（あ）（',
-      '-abcd '
+      '-abcd ',
+      'اين المكتبة؟',
+      'bidiالرياضيات'
     ]
 
     ctx.font = '50px sans-serif';
@@ -1663,7 +1671,9 @@
       'UNAVAILABLE',
       '🏁🎶🏁',
       '）（あ）（',
-      '-abcd_'
+      '-abcd_',
+      'اين المكتبة؟',
+      'bidiالرياضيات'
     ]
 
     for (const text of kTexts) {
diff --git a/tests/wpt/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-tests.js b/tests/wpt/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-tests.js
index 6e15b6524a0..d3eca406fd8 100644
--- a/tests/wpt/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-tests.js
+++ b/tests/wpt/tests/html/dom/elements/the-innertext-and-outertext-properties/getter-tests.js
@@ -56,8 +56,14 @@ testText("<div><span>abc </span><span style='white-space:pre'></span> def", "abc
 testText("<div>abc <input> def", "abc  def", "Whitespace around <input> should not be collapsed");
 testText("<div>abc <span style='display:inline-block'></span> def", "abc  def", "Whitespace around inline-block should not be collapsed");
 testText("<div>abc <span style='display:inline-block'> def </span> ghi", "abc def ghi", "Trailing space at end of inline-block should be collapsed");
+testText("<div>abc <span style='display:inline-flex'></span> def", "abc  def", "Whitespace around inline-flex should not be collapsed");
+testText("<div>abc <span style='display:inline-flex'> def </span> ghi", "abc def ghi", "Trailing space at end of inline-flex should be collapsed");
+testText("<div>abc <span style='display:inline-grid'></span> def", "abc  def", "Whitespace around inline-grid should not be collapsed");
+testText("<div>abc <span style='display:inline-grid'> def </span> ghi", "abc def ghi", "Trailing space at end of grid-flex should be collapsed");
 testText("<div><input> <div>abc</div>", "abc", "Whitespace between <input> and block should be collapsed");
 testText("<div><span style='inline-block'></span> <div>abc</div>", "abc", "Whitespace between inline-block and block should be collapsed");
+testText("<div><span style='inline-flex'></span> <div>abc</div>", "abc", "Whitespace between inline-flex and block should be collapsed");
+testText("<div><span style='inline-grid'></span> <div>abc</div>", "abc", "Whitespace between inline-grid and block should be collapsed");
 testText("<div>abc <img> def", "abc  def", "Whitespace around <img> should not be collapsed");
 testText("<div>abc <img width=1 height=1> def", "abc  def", "Whitespace around <img> should not be collapsed");
 testText("<div><img> abc", " abc", "Leading whitesapce should not be collapsed");
@@ -237,6 +243,8 @@ testText("<div style='visibility:hidden'><p><span style='visibility:visible'>abc
 testText("<div>abc<div style='margin:2em'>def", "abc\ndef", "No blank lines around <div> with margin");
 testText("<div>123<span style='display:inline-block'>abc</span>def", "123abcdef", "No newlines at display:inline-block boundary");
 testText("<div>123<span style='display:inline-block'> abc </span>def", "123abcdef", "Leading/trailing space removal at display:inline-block boundary");
+testText("<div>123<span style='display:inline-flex'> abc </span>def", "123abcdef", "Leading/trailing space removal at display:inline-flex boundary");
+testText("<div>123<span style='display:inline-grid'> abc </span>def", "123abcdef", "Leading/trailing space removal at display:inline-grid boundary");
 testText("<div>123<p style='margin:0px'>abc</p>def", "123\n\nabc\n\ndef", "Blank lines around <p> even without margin");
 testText("<div>123<h1>abc</h1>def", "123\nabc\ndef", "No blank lines around <h1>");
 testText("<div>123<h2>abc</h2>def", "123\nabc\ndef", "No blank lines around <h2>");
diff --git a/tests/wpt/tests/html/rendering/non-replaced-elements/the-frameset-and-frame-elements/frame-no-frameset-crash.html b/tests/wpt/tests/html/rendering/non-replaced-elements/the-frameset-and-frame-elements/frame-no-frameset-crash.html
new file mode 100644
index 00000000000..b032cab90d3
--- /dev/null
+++ b/tests/wpt/tests/html/rendering/non-replaced-elements/the-frameset-and-frame-elements/frame-no-frameset-crash.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<link rel=help href="https://bugzilla.mozilla.org/show_bug.cgi?id=1917361">
+<script>
+document.addEventListener("DOMContentLoaded", () => {
+  const a = new Document()
+  const b = a.createElementNS("http://www.w3.org/1999/xhtml", "frame")
+  document.documentElement.appendChild(b)
+  try { b.contentWindow.history.replaceState(undefined, "𛵢") } catch (e) {}
+  b.contentWindow.history.go()
+})
+</script>
diff --git a/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-keyboard-hidden-option.tentative.html b/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-keyboard-hidden-option.tentative.html
new file mode 100644
index 00000000000..b9d7cfbd3c0
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/forms/the-select-element/stylable-select/select-keyboard-hidden-option.tentative.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=help href="https://github.com/whatwg/html/issues/9799">
+<link rel=help href="https://issues.chromium.org/issues/360357707">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+
+<style>
+select, select::picker(select) {
+  appearance: base-select;
+}
+</style>
+
+<select>
+  <option hidden>hidden one</option>
+  <option class=two>two</option>
+  <option class=three>three</option>
+</select>
+
+<script>
+const ArrowDown = '\uE015';
+
+promise_test(async () => {
+  const select = document.querySelector('select');
+  const hiddenOption = document.querySelector('option[hidden]');
+  const optionTwo = document.querySelector('option.two');
+  const optionThree = document.querySelector('option.three');
+
+  select.focus();
+  await test_driver.send_keys(select, ' ');
+  assert_true(select.matches(':open'),
+    'Select should open after pressing spacebar.');
+
+  assert_equals(document.activeElement, optionTwo,
+    'The first visible <option> should get focused after opening picker.');
+
+  await (new test_driver.Actions()
+    .keyDown(ArrowDown)
+    .keyUp(ArrowDown))
+    .send();
+
+  assert_equals(document.activeElement, optionThree,
+    'The second visible <option> should get focused after arrowdown.');
+}, 'Hidden <option>s should not get initial focus.');
+</script>
diff --git a/tests/wpt/tests/html/semantics/interactive-elements/the-details-element/name-attribute.html b/tests/wpt/tests/html/semantics/interactive-elements/the-details-element/name-attribute.html
index 19d62de66f4..fb1ff695dc2 100644
--- a/tests/wpt/tests/html/semantics/interactive-elements/the-details-element/name-attribute.html
+++ b/tests/wpt/tests/html/semantics/interactive-elements/the-details-element/name-attribute.html
@@ -462,4 +462,35 @@ promise_test(async t => {
   assert_in_array(mutations3.count, [0, 1], "mutation events count after inserting new3");
 }, "handling of insertion of elements into group");
 
+promise_test(async t => {
+  container.remove();
+  container.innerHTML = `
+    <details name="a">
+      <summary>1</summary>
+      This is the first item.
+    </details>
+
+    <details name="a">
+      <summary>2</summary>
+      This is the second item.
+    </details>
+  `;
+  let first = container.firstElementChild;
+  let second = first.nextElementSibling;
+  assert_false(first.open);
+  assert_false(second.open);
+  first.open = true;
+  assert_true(first.open);
+  assert_false(second.open);
+  second.open = true;
+  assert_false(first.open);
+  assert_true(second.open);
+  second.open = true;
+  assert_false(first.open);
+  assert_true(second.open);
+  second.open = false;
+  assert_false(first.open);
+  assert_false(second.open);
+}, "basic handling of mutually exclusive details when the element isn't connected");
+
 </script>
diff --git a/tests/wpt/tests/html/semantics/popovers/imperative-invokers.tentative.html b/tests/wpt/tests/html/semantics/popovers/imperative-invokers.tentative.html
new file mode 100644
index 00000000000..f810d11b01a
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/popovers/imperative-invokers.tentative.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<link rel=author href="mailto:masonf@chromium.org">
+<link rel=help href="https://github.com/whatwg/html/pull/9144#issuecomment-2195095228">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<div id=unrelated></div>
+<div id=popover popover=auto>
+  <div id=contained></div>
+  popover 1
+</div>
+<div id=popover2 popover=auto style="top:50px">
+  popover 2
+</div>
+
+<script>
+function testOneCase(shouldBeIndependent,popover2Opener,msg) {
+  test((t) => {
+    assert_false(popover.matches(':popover-open'),'starting state');
+    assert_false(popover2.matches(':popover-open'),'starting state');
+    t.add_cleanup(() => {popover.hidePopover();popover2.hidePopover()});
+    popover.showPopover();
+    assert_true(popover.matches(':popover-open'));
+    popover2Opener();
+    assert_true(popover2.matches(':popover-open'),'opener should open popover2');
+    if (shouldBeIndependent) {
+      assert_false(popover.matches(':popover-open'),'popovers should not be related');
+    } else {
+      assert_true(popover.matches(':popover-open'),'popovers should be related to each other');
+    }
+  },msg);
+}
+
+testOneCase(true,() => popover2.showPopover(),'normal opening');
+testOneCase(true,() => popover2.showPopover({invoker: unrelated}),'showPopover(unrelated)');
+testOneCase(false,() => popover2.showPopover({invoker: popover}),'showPopover(popover)');
+testOneCase(false,() => popover2.showPopover({invoker: contained}),'showPopover(contained)');
+
+testOneCase(true,() => popover2.togglePopover(true),'togglePopover(true)');
+testOneCase(true,() => popover2.togglePopover({force:true}),'togglePopover({force})');
+testOneCase(true,() => popover2.togglePopover({invoker:unrelated}),'togglePopover(unrelated)');
+testOneCase(false,() => popover2.togglePopover({invoker: popover}),'togglePopover(popover)');
+testOneCase(false,() => popover2.togglePopover({force:true, invoker: popover}),'togglePopover({force, popover})');
+
+test(() => {
+  assert_false(popover.matches(':popover-open'));
+  assert_throws_js(TypeError,() => popover2.showPopover({invoker: null}),'showPopover(null)');
+  assert_throws_js(TypeError,() => popover2.togglePopover({invoker:null}),'togglePopover(null)');
+  assert_false(popover.matches(':popover-open'));
+},'null isn\'t a valid Element');
+</script>
diff --git a/tests/wpt/tests/html/semantics/popovers/popover-hint-crash.tentative.html b/tests/wpt/tests/html/semantics/popovers/popover-hint-crash.tentative.html
new file mode 100644
index 00000000000..3de26995262
--- /dev/null
+++ b/tests/wpt/tests/html/semantics/popovers/popover-hint-crash.tentative.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+
+<div popover id=p>Popover</div>
+<div popover=hint id=h>Hint</div>
+<script>
+  p.showPopover();
+  h.showPopover();
+  h.addEventListener('beforetoggle',() => {
+    p.hidePopover();
+  });
+  p.hidePopover();
+  // This test passes if it does not crash.
+</script>
diff --git a/tests/wpt/tests/idle-detection/idle-detection-detached-frame.https.html b/tests/wpt/tests/idle-detection/idle-detection-detached-frame.https.html
index 062499b54d6..269af145cb7 100644
--- a/tests/wpt/tests/idle-detection/idle-detection-detached-frame.https.html
+++ b/tests/wpt/tests/idle-detection/idle-detection-detached-frame.https.html
@@ -20,10 +20,14 @@ promise_test(async t => {
 
   let detector = new frameIdleDetector();
   document.body.outerHTML = "";
+
+  await promise_rejects_dom(t, 'InvalidStateError', frameDOMException,
+                            frameIdleDetector.requestPermission());
+
   await promise_rejects_dom(t, 'InvalidStateError', frameDOMException, detector.start());
 
   detector = new frameIdleDetector();
-  return promise_rejects_dom(t, 'InvalidStateError', frameDOMException, detector.start());
+  await promise_rejects_dom(t, 'InvalidStateError', frameDOMException, detector.start());
 }, 'Using an IdleDetector from a detached frame');
 
 </script>
diff --git a/tests/wpt/tests/input-events/input-events-arrow-key-on-number-input-delete-document.html b/tests/wpt/tests/input-events/input-events-arrow-key-on-number-input-delete-document.html
index 20dad0da40a..a8ad3faf4f4 100644
--- a/tests/wpt/tests/input-events/input-events-arrow-key-on-number-input-delete-document.html
+++ b/tests/wpt/tests/input-events/input-events-arrow-key-on-number-input-delete-document.html
@@ -9,29 +9,39 @@
 <body>
 <iframe id="iframe"></iframe>
 <script>
-promise_test(async function() {
-  const child = document.getElementById("iframe");
-  const childDocument = child.contentDocument;
-  const inputElement = childDocument.createElement('input');
-  inputElement.type = "number";
-  childDocument.body.appendChild(inputElement);
-  let events = [];
-  inputElement.addEventListener("beforeinput", () => {
-    child.remove();
-    events.push("beforeinput");
-  });
-  inputElement.addEventListener("input", () => {
-    evenst.push("input");
-  });
-  inputElement.addEventListener("change", () => {
-    events.push("change");
-  });
+  const frame = document.getElementById("iframe");
 
-  inputElement.focus();
+  function loadIframe(doc) {
+    return new Promise((resolve) => {
+      frame.addEventListener("load", resolve);
+      frame.srcdoc = doc;
+    });
+  }
 
-  await new test_driver.send_keys(inputElement, "\uE013");
-  assert_array_equals(events, ['beforeinput']);
-}, "Number input should not crash and not fire subsequent events when event handler removes document");
+  promise_test(async function() {
+    await loadIframe("<input type='number'>");
+    const inputElement = frame.contentDocument.querySelector("input");
+
+    let events = [];
+
+    inputElement.addEventListener("beforeinput", () => {
+      events.push("beforeinput");
+      frame.remove();
+    });
+    inputElement.addEventListener("input", () => {
+      events.push("input");
+    });
+    inputElement.addEventListener("change", () => {
+      events.push("change");
+    });
+
+    inputElement.focus();
+
+    await test_driver.send_keys(inputElement, "\uE013");
+
+    assert_array_equals(events, ['beforeinput']);
+    assert_false(document.body.contains(frame));
+  }, "Number input should not crash and not fire subsequent events when event handler removes document");
 </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input-delete-document.html b/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input-delete-document.html
index 1b179952ca4..fb3655398db 100644
--- a/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input-delete-document.html
+++ b/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input-delete-document.html
@@ -4,37 +4,57 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
 <script src="/resources/testdriver-vendor.js"></script>
 </head>
 <body>
 <iframe id="iframe"></iframe>
 <script>
-promise_test(async function() {
-  const child = document.getElementById("iframe");
-  const childDocument = child.contentDocument;
-  const inputElement = childDocument.createElement('input');
-  inputElement.type = "number";
-  childDocument.body.appendChild(inputElement);
-  let events = [];
-  inputElement.addEventListener("beforeinput", () => {
-    child.remove();
-    events.push("beforeinput");
-  });
-  inputElement.addEventListener("input", () => {
-    events.push("input");
-  });
-  inputElement.addEventListener("change", () => {
-    events.push("change");
-  });
+  const frame = document.getElementById("iframe");
 
-  inputElement.focus();
-  // Get the spin button up arrow key location and adjust with iframe offset to get absolute position
-  const x1 = (inputElement.offsetLeft + inputElement.offsetWidth - 10) + child.offsetLeft;
-  const y1 = (inputElement.offsetTop + inputElement.offsetHeight / 4) + child.offsetTop;
-  await test_driver_internal.click(inputElement,{x: x1, y: y1});
-  assert_array_equals(events, ['beforeinput']);
-  assert_false(document.body.contains(child));
-}, "Number input should not crash and not fire subsequent events when event handler removes document");
+  function loadIframe(doc) {
+    return new Promise((resolve) => {
+      frame.addEventListener("load", resolve);
+      frame.srcdoc = doc;
+    });
+  }
+
+  promise_test(async function () {
+    await loadIframe(
+      "<input type='number' style='width: 100px; height: 20px'>"
+    );
+    const inputElement = frame.contentDocument.querySelector("input");
+
+    let events = [];
+
+    inputElement.addEventListener("beforeinput", () => {
+      frame.remove();
+      events.push("beforeinput");
+    });
+    inputElement.addEventListener("input", () => {
+      events.push("input");
+    });
+    inputElement.addEventListener("change", () => {
+      events.push("change");
+    });
+
+    // Roughly get the offset to the spin up arrow button's center point within
+    // the iframe's viewport. Note that this is fragile and might need specific
+    // coordinates for each browser and maybe platform.
+    const rect = inputElement.getBoundingClientRect();
+    const x = rect.x + rect.width - 10;
+    const y = rect.y + Math.round(rect.height / 4);
+
+    const actions = new test_driver.Actions()
+      .setContext(frame.contentWindow)
+      .pointerMove(x, y, { origin: "viewport" })
+      .pointerDown()
+      .pointerUp();
+    await actions.send();
+
+    assert_array_equals(events, ['beforeinput']);
+    assert_false(document.body.contains(frame));
+  }, "Number input should not crash and not fire subsequent events when event handler removes document");
 </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input-prevent-default.html b/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input-prevent-default.html
index 558000940c9..8cfa27f23b3 100644
--- a/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input-prevent-default.html
+++ b/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input-prevent-default.html
@@ -4,32 +4,43 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
 <script src="/resources/testdriver-vendor.js"></script>
 </head>
 <body>
 <input type="number" id="number_input">
 <script>
-promise_test(async function() {
-  const inputElement = document.getElementById("number_input");
-  let events = [];
-  inputElement.addEventListener("beforeinput", (e) => {
-    e.preventDefault();
-    events.push("beforeinput");
-  });
-  inputElement.addEventListener("input", () => {
-    events.push("input");
-  });
-  inputElement.addEventListener("change", () => {
-    events.push("change");
-  });
+  promise_test(async function() {
+    const inputElement = document.getElementById("number_input");
 
-  inputElement.focus();
-  // Get the spin button up arrow key location
-  const x1 = (inputElement.offsetLeft + inputElement.offsetWidth - 10);
-  const y1 = (inputElement.offsetTop + inputElement.offsetHeight / 4);
-  await test_driver_internal.click(inputElement,{x: x1, y: y1});
-  assert_array_equals(events, ['beforeinput']);
-}, "Number input should not fire input and change event if the beforeinput event is default prevented");
+    let events = [];
+
+    inputElement.addEventListener("beforeinput", (e) => {
+      e.preventDefault();
+      events.push("beforeinput");
+    });
+    inputElement.addEventListener("input", () => {
+      events.push("input");
+    });
+    inputElement.addEventListener("change", () => {
+      events.push("change");
+    });
+
+    // Roughly get the offset to the spin up arrow button's center point within
+    // the iframe's viewport. Note that this is fragile and might need specific
+    // coordinates for each browser and maybe platform.
+    const rect = inputElement.getBoundingClientRect();
+    const x = rect.x + rect.width - 10;
+    const y = rect.y + Math.round(rect.height / 4);
+
+    const actions = new test_driver.Actions()
+      .pointerMove(x, y, { origin: "viewport" })
+      .pointerDown()
+      .pointerUp();
+    await actions.send();
+
+    assert_array_equals(events, ['beforeinput']);
+  }, "Number input should not fire input and change event if the beforeinput event is default prevented");
 </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input.html b/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input.html
index e86be1798e4..105a94f0b4a 100644
--- a/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input.html
+++ b/tests/wpt/tests/input-events/input-events-spin-button-click-on-number-input.html
@@ -4,6 +4,7 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
 <script src="/resources/testdriver-vendor.js"></script>
 </head>
 <body>
@@ -11,7 +12,9 @@
 <script>
 promise_test(async function() {
   const inputElement = document.getElementById("number_input");
+
   let events = [];
+
   inputElement.addEventListener("beforeinput", () => {
     events.push("beforeinput");
   });
@@ -22,11 +25,19 @@ promise_test(async function() {
     events.push("change");
   });
 
-  inputElement.focus();
-  // Get the spin button up arrow key location
-  const x1 = (inputElement.offsetLeft + inputElement.offsetWidth - 10);
-  const y1 = (inputElement.offsetTop + inputElement.offsetHeight / 4);
-  await test_driver_internal.click(inputElement,{x: x1, y: y1});
+  // Roughly get the offset to the spin up arrow button's center point within
+  // the iframe's viewport. Note that this is fragile and might need specific
+  // coordinates for each browser and maybe platform.
+  const rect = inputElement.getBoundingClientRect();
+  const x = rect.x + rect.width - 10;
+  const y = rect.y + Math.round(rect.height / 4);
+
+  const actions = new test_driver.Actions()
+    .pointerMove(x, y, { origin: "viewport" })
+    .pointerDown()
+    .pointerUp();
+  await actions.send();
+
   assert_array_equals(events, ['beforeinput','input','change']);
 }, "Number input should fire beforeinput event before the input and change event");
 </script>
diff --git a/tests/wpt/tests/interfaces/css-fonts.idl b/tests/wpt/tests/interfaces/css-fonts.idl
index 678f31323b8..d5c9dc86705 100644
--- a/tests/wpt/tests/interfaces/css-fonts.idl
+++ b/tests/wpt/tests/interfaces/css-fonts.idl
@@ -38,7 +38,7 @@ interface CSSFontFaceDescriptors : CSSStyleDeclaration {
 
 [Exposed=Window]
 interface CSSFontFaceRule : CSSRule {
-  readonly attribute CSSFontFaceDescriptors style;
+  [SameObject, PutForwards=cssText] readonly attribute CSSFontFaceDescriptors style;
 };
 
 partial interface CSSRule {  const unsigned short FONT_FEATURE_VALUES_RULE = 14;
diff --git a/tests/wpt/tests/interfaces/digital-identities.idl b/tests/wpt/tests/interfaces/digital-credentials.idl
similarity index 98%
rename from tests/wpt/tests/interfaces/digital-identities.idl
rename to tests/wpt/tests/interfaces/digital-credentials.idl
index 90307fdadd5..a12ce5a2ba2 100644
--- a/tests/wpt/tests/interfaces/digital-identities.idl
+++ b/tests/wpt/tests/interfaces/digital-credentials.idl
@@ -1,7 +1,7 @@
 // GENERATED CONTENT - DO NOT EDIT
 // Content was automatically extracted by Reffy into webref
 // (https://github.com/w3c/webref)
-// Source: Digital Credentials (https://wicg.github.io/digital-credentials)
+// Source: Digital Credentials (https://wicg.github.io/digital-credentials/)
 
 partial interface Navigator {
   [SecureContext, SameObject] readonly attribute CredentialsContainer identity;
diff --git a/tests/wpt/tests/interfaces/FedCM.idl b/tests/wpt/tests/interfaces/fedcm.idl
similarity index 88%
rename from tests/wpt/tests/interfaces/FedCM.idl
rename to tests/wpt/tests/interfaces/fedcm.idl
index 4070d50fcd7..ba99f1174c8 100644
--- a/tests/wpt/tests/interfaces/FedCM.idl
+++ b/tests/wpt/tests/interfaces/fedcm.idl
@@ -1,22 +1,7 @@
 // GENERATED CONTENT - DO NOT EDIT
 // Content was automatically extracted by Reffy into webref
 // (https://github.com/w3c/webref)
-// Source: Federated Credential Management API (https://fedidcg.github.io/FedCM/)
-
-enum LoginStatus {
-  "logged-in",
-  "logged-out",
-};
-
-[Exposed=Window, SecureContext]
-
-interface NavigatorLogin {
-  Promise<undefined> setStatus(LoginStatus status);
-};
-
-partial interface Navigator {
-  [SecureContext] readonly attribute NavigatorLogin login;
-};
+// Source: Federated Credential Management API (https://w3c-fedid.github.io/FedCM/)
 
 dictionary IdentityCredentialDisconnectOptions : IdentityProviderConfig {
   required USVString accountHint;
diff --git a/tests/wpt/tests/interfaces/ink-enhancement.idl b/tests/wpt/tests/interfaces/ink-enhancement.idl
index 711bab7729c..a3459c7ee74 100644
--- a/tests/wpt/tests/interfaces/ink-enhancement.idl
+++ b/tests/wpt/tests/interfaces/ink-enhancement.idl
@@ -5,7 +5,7 @@
 
 [Exposed=Window]
 interface Ink {
-    Promise<InkPresenter> requestPresenter(
+    Promise<DelegatedInkTrailPresenter> requestPresenter(
         optional InkPresenterParam param = {});
 };
 
@@ -14,7 +14,7 @@ dictionary InkPresenterParam {
 };
 
 [Exposed=Window]
-interface InkPresenter {
+interface DelegatedInkTrailPresenter {
     readonly attribute Element? presentationArea;
 
     undefined updateInkTrailStartPoint(PointerEvent event, InkTrailStyle style);
diff --git a/tests/wpt/tests/interfaces/observable.idl b/tests/wpt/tests/interfaces/observable.idl
new file mode 100644
index 00000000000..b0f0949a23a
--- /dev/null
+++ b/tests/wpt/tests/interfaces/observable.idl
@@ -0,0 +1,106 @@
+// GENERATED CONTENT - DO NOT EDIT
+// Content was automatically extracted by Reffy into webref
+// (https://github.com/w3c/webref)
+// Source: Observable (https://wicg.github.io/observable/)
+
+[Exposed=*]
+interface Subscriber {
+  undefined next(any value);
+  undefined error(any error);
+  undefined complete();
+  undefined addTeardown(VoidFunction teardown);
+
+  // True after the Subscriber is created, up until either
+  // complete()/error() are invoked, or the subscriber unsubscribes. Inside
+  // complete()/error(), this attribute is true.
+  readonly attribute boolean active;
+
+  readonly attribute AbortSignal signal;
+};
+
+// SubscribeCallback is where the Observable "creator’s" code lives. It’s
+// called when subscribe() is called, to set up a new subscription.
+callback SubscribeCallback = undefined (Subscriber subscriber);
+callback ObservableSubscriptionCallback = undefined (any value);
+
+dictionary SubscriptionObserver {
+  ObservableSubscriptionCallback next;
+  ObservableSubscriptionCallback error;
+  VoidFunction complete;
+};
+
+callback ObservableInspectorAbortHandler = undefined (any value);
+
+dictionary ObservableInspector {
+  ObservableSubscriptionCallback next;
+  ObservableSubscriptionCallback error;
+  VoidFunction complete;
+
+  VoidFunction subscribe;
+  ObservableInspectorAbortHandler abort;
+};
+
+typedef (ObservableSubscriptionCallback or SubscriptionObserver) ObserverUnion;
+typedef (ObservableSubscriptionCallback or ObservableInspector) ObservableInspectorUnion;
+
+dictionary SubscribeOptions {
+  AbortSignal signal;
+};
+
+callback Predicate = boolean (any value, unsigned long long index);
+callback Reducer = any (any accumulator, any currentValue, unsigned long long index);
+callback Mapper = any (any value, unsigned long long index);
+// Differs from Mapper only in return type, since this callback is exclusively
+// used to visit each element in a sequence, not transform it.
+callback Visitor = undefined (any value, unsigned long long index);
+
+// This callback returns an `any` that must convert into an `Observable`, via
+// the `Observable` conversion semantics.
+callback CatchCallback = any (any value);
+
+[Exposed=*]
+interface Observable {
+  constructor(SubscribeCallback callback);
+  undefined subscribe(optional ObserverUnion observer = {}, optional SubscribeOptions options = {});
+
+  // Constructs a native Observable from value if it’s any of the following:
+  //   - Observable
+  //   - AsyncIterable
+  //   - Iterable
+  //   - Promise
+  static Observable from(any value);
+
+  // Observable-returning operators. See "Operators" section in the spec.
+  //
+  // takeUntil() can consume promises, iterables, async iterables, and other
+  // observables.
+  Observable takeUntil(any notifier);
+  Observable map(Mapper mapper);
+  Observable filter(Predicate predicate);
+  Observable take(unsigned long long amount);
+  Observable drop(unsigned long long amount);
+  Observable flatMap(Mapper mapper);
+  Observable switchMap(Mapper mapper);
+  Observable inspect(optional ObservableInspectorUnion inspect_observer = {});
+  Observable catch(CatchCallback callback);
+  Observable finally(VoidFunction callback);
+
+  // Promise-returning operators.
+  Promise<sequence<any>> toArray(optional SubscribeOptions options = {});
+  Promise<undefined> forEach(Visitor callback, optional SubscribeOptions options = {});
+  Promise<boolean> every(Predicate predicate, optional SubscribeOptions options = {});
+  Promise<any> first(optional SubscribeOptions options = {});
+  Promise<any> last(optional SubscribeOptions options = {});
+  Promise<any> find(Predicate predicate, optional SubscribeOptions options = {});
+  Promise<boolean> some(Predicate predicate, optional SubscribeOptions options = {});
+  Promise<any> reduce(Reducer reducer, optional any initialValue, optional SubscribeOptions options = {});
+};
+
+dictionary ObservableEventListenerOptions {
+  boolean capture = false;
+  boolean passive;
+};
+
+partial interface EventTarget {
+  Observable when(DOMString type, optional ObservableEventListenerOptions options = {});
+};
diff --git a/tests/wpt/tests/interfaces/private-aggregation-api.idl b/tests/wpt/tests/interfaces/private-aggregation-api.idl
new file mode 100644
index 00000000000..cee17c63f04
--- /dev/null
+++ b/tests/wpt/tests/interfaces/private-aggregation-api.idl
@@ -0,0 +1,73 @@
+// GENERATED CONTENT - DO NOT EDIT
+// Content was automatically extracted by Reffy into webref
+// (https://github.com/w3c/webref)
+// Source: Private Aggregation API (https://patcg-individual-drafts.github.io/private-aggregation-api/)
+
+[Exposed=(InterestGroupScriptRunnerGlobalScope,SharedStorageWorklet),
+ SecureContext]
+interface PrivateAggregation {
+  undefined contributeToHistogram(PAHistogramContribution contribution);
+  undefined enableDebugMode(optional PADebugModeOptions options = {});
+};
+
+dictionary PAHistogramContribution {
+  required bigint bucket;
+  required long value;
+  bigint filteringId = 0;
+};
+
+dictionary PADebugModeOptions {
+  required bigint debugKey;
+};
+
+partial interface InterestGroupScriptRunnerGlobalScope {
+  readonly attribute PrivateAggregation privateAggregation;
+};
+
+dictionary PASignalValue {
+  required DOMString baseValue;
+  double scale;
+  (bigint or long) offset;
+};
+
+dictionary PAExtendedHistogramContribution {
+  required (PASignalValue or bigint) bucket;
+  required (PASignalValue or long) value;
+  bigint filteringId = 0;
+};
+
+[Exposed=InterestGroupScriptRunnerGlobalScope, SecureContext]
+partial interface PrivateAggregation {
+  undefined contributeToHistogramOnEvent(
+      DOMString event, PAExtendedHistogramContribution contribution);
+};
+
+dictionary AuctionReportBuyersConfig {
+  required bigint bucket;
+  required double scale;
+};
+
+dictionary AuctionReportBuyerDebugModeConfig {
+  boolean enabled = false;
+
+  // Must only be provided if `enabled` is true.
+  bigint? debugKey;
+};
+
+partial dictionary AuctionAdConfig {
+  sequence<bigint> auctionReportBuyerKeys;
+  record<DOMString, AuctionReportBuyersConfig> auctionReportBuyers;
+  AuctionReportBuyerDebugModeConfig auctionReportBuyerDebugModeConfig;
+};
+
+dictionary ProtectedAudiencePrivateAggregationConfig {
+  USVString aggregationCoordinatorOrigin;
+};
+
+partial dictionary AuctionAdConfig {
+  ProtectedAudiencePrivateAggregationConfig privateAggregationConfig;
+};
+
+partial dictionary AuctionAdInterestGroup {
+  ProtectedAudiencePrivateAggregationConfig privateAggregationConfig;
+};
diff --git a/tests/wpt/tests/interfaces/shared-storage.idl b/tests/wpt/tests/interfaces/shared-storage.idl
index cfaae1e6e24..6f8e9270888 100644
--- a/tests/wpt/tests/interfaces/shared-storage.idl
+++ b/tests/wpt/tests/interfaces/shared-storage.idl
@@ -24,6 +24,7 @@ interface SharedStorageWorkletGlobalScope : WorkletGlobalScope {
                      Function operationCtor);
 
   readonly attribute SharedStorage sharedStorage;
+  readonly attribute PrivateAggregation privateAggregation;
 };
 
 dictionary SharedStorageUrlWithMetadata {
@@ -77,10 +78,17 @@ dictionary SharedStorageSetMethodOptions {
   boolean ignoreIfPresent = false;
 };
 
+dictionary SharedStoragePrivateAggregationConfig {
+  USVString aggregationCoordinatorOrigin;
+  USVString contextId;
+  [EnforceRange] unsigned long long filteringIdMaxBytes;
+};
+
 dictionary SharedStorageRunOperationMethodOptions {
   object data;
   boolean resolveToConfig = false;
   boolean keepAlive = false;
+  SharedStoragePrivateAggregationConfig privateAggregationConfig;
 };
 
 dictionary SharedStorageWorkletOptions : WorkletOptions {
diff --git a/tests/wpt/tests/interfaces/uievents.idl b/tests/wpt/tests/interfaces/uievents.idl
index 0f9d3d3c188..aea38778326 100644
--- a/tests/wpt/tests/interfaces/uievents.idl
+++ b/tests/wpt/tests/interfaces/uievents.idl
@@ -235,26 +235,3 @@ interface TextEvent : UIEvent {
         optional Window? view = null,
         optional DOMString data = "undefined");
 };
-
-[Exposed=Window]
-interface MutationEvent : Event {
-  // attrChangeType
-  const unsigned short MODIFICATION = 1;
-  const unsigned short ADDITION = 2;
-  const unsigned short REMOVAL = 3;
-
-  readonly attribute Node? relatedNode;
-  readonly attribute DOMString prevValue;
-  readonly attribute DOMString newValue;
-  readonly attribute DOMString attrName;
-  readonly attribute unsigned short attrChange;
-
-  undefined initMutationEvent(DOMString typeArg,
-    optional boolean bubblesArg = false,
-    optional boolean cancelableArg = false,
-    optional Node? relatedNodeArg = null,
-    optional DOMString prevValueArg = "",
-    optional DOMString newValueArg = "",
-    optional DOMString attrNameArg = "",
-    optional unsigned short attrChangeArg = 0);
-};
diff --git a/tests/wpt/tests/interfaces/webgpu.idl b/tests/wpt/tests/interfaces/webgpu.idl
index df82c2becd5..74021895a8f 100644
--- a/tests/wpt/tests/interfaces/webgpu.idl
+++ b/tests/wpt/tests/interfaces/webgpu.idl
@@ -78,6 +78,7 @@ interface GPU {
 };
 
 dictionary GPURequestAdapterOptions {
+    any featureLevel;
     GPUPowerPreference powerPreference;
     boolean forceFallbackAdapter = false;
 };
@@ -111,6 +112,7 @@ enum GPUFeatureName {
     "texture-compression-bc-sliced-3d",
     "texture-compression-etc2",
     "texture-compression-astc",
+    "texture-compression-astc-sliced-3d",
     "timestamp-query",
     "indirect-first-instance",
     "shader-f16",
@@ -639,7 +641,7 @@ interface mixin GPUPipelineBase {
 dictionary GPUProgrammableStage {
     required GPUShaderModule module;
     USVString entryPoint;
-    record<USVString, GPUPipelineConstantValue> constants;
+    record<USVString, GPUPipelineConstantValue> constants = {};
 };
 
 typedef double GPUPipelineConstantValue; // May represent WGSL's bool, f32, i32, u32, and f16 if enabled.
diff --git a/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-001.tentative-ref.html b/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-001.tentative-ref.html
new file mode 100644
index 00000000000..8fb431adfad
--- /dev/null
+++ b/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-001.tentative-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+  mrow { color: red; }
+  mrow:link { margin: 10px; color: green; }
+  mtext { font: 25px/1 Ahem; }
+</style>
+<math>
+  <mfrac>
+    <mrow id="mrow" width="50px" height="50px" style="background: blue"
+          href="about:blank">
+      <mtext>XXX</mtext>
+    </mrow>
+    <mtext>XXX</mtext>
+  </mfrac>
+</math>
diff --git a/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-001.tentative.html b/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-001.tentative.html
new file mode 100644
index 00000000000..e2128d1557a
--- /dev/null
+++ b/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-001.tentative.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+  <title>Test dynamic change of the href attribute</title>
+  <link rel="help" href="https://w3c.github.io/mathml-core/#attributes-common-to-html-and-mathml-elements">
+  <link rel="help" href="https://w3c.github.io/mathml-core/#dom-and-javascript">
+  <link rel="help" href="https://github.com/w3c/mathml-core/issues/142">
+  <link rel="match" href="dynamic-href-001.tentative-ref.html"/>
+  <script>
+    document.documentElement.addEventListener("TestRendered", () => {
+      // Attach the href attribute to the mrow element.
+      mrow.setAttribute("href", "about:blank");
+      document.documentElement.removeAttribute("class");
+    });
+  </script>
+  <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+  <style>
+    mrow { color: red; }
+    mrow:link { margin: 10px; color: green; }
+    mtext { font: 25px/1 Ahem; }
+  </style>
+  <math>
+    <mfrac>
+      <mrow id="mrow" width="50px" height="50px" style="background: blue">
+        <mtext>XXX</mtext>
+      </mrow>
+      <mtext>XXX</mtext>
+    </mfrac>
+  </math>
+</html>
diff --git a/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-002.tentative.html b/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-002.tentative.html
new file mode 100644
index 00000000000..927366f5b13
--- /dev/null
+++ b/tests/wpt/tests/mathml/relations/html5-tree/dynamic-href-002.tentative.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Test dynamic change of the href attribute</title>
+<link rel="help" href="https://w3c.github.io/mathml-core/#attributes-common-to-html-and-mathml-elements">
+<link rel="help" href="https://w3c.github.io/mathml-core/#dom-and-javascript">
+<link rel="help" href="https://github.com/w3c/mathml-core/issues/142">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+</head>
+<body>
+  <p>To test manually, click the blue rectangle.</p>
+  <p>
+    <math>
+      <mspace width="50px" height="10px" style="background: gray"></mspace>
+      <mrow id="target" href="javascript:badHandler()" style="background: blue">
+        <mspace width="50px" height="10px"></mspace>
+      </mrow>
+      <mspace width="50px" height="10px" style="background: gray"></mspace>
+    </math>
+  </p>
+  <a id="badTarget" href="javascript:badHandler()">DON'T CLICK ME</a>
+  <script>
+    var t = async_test("Click element with href");
+    function handler() { t.done(); }
+    function badHandler() {
+      t.step(() => { assert_unreached("Bad handler executed"); });
+      t.done();
+    }
+
+    // Modify the href attribute to execute the 'good' handler.
+    let target = document.getElementById("target");
+    target.setAttribute("href", "javascript:handler()");
+
+    test_driver.click(target).then(() => {
+      return test_driver.click(document.getElementById("badTarget"));
+    }).catch(() => {
+      t.step(() => { assert_unreached("Click failed"); });
+      t.done();
+    });
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/tests/partitioned-popins/partitioned-popins.partitions.tentative.https.window.js b/tests/wpt/tests/partitioned-popins/partitioned-popins.partitions.tentative.https.window.js
new file mode 100644
index 00000000000..a414d9a1207
--- /dev/null
+++ b/tests/wpt/tests/partitioned-popins/partitioned-popins.partitions.tentative.https.window.js
@@ -0,0 +1,342 @@
+// META: script=/resources/testdriver.js
+// META: script=/resources/testdriver-vendor.js
+// META: script=/common/dispatcher/dispatcher.js
+// META: script=/common/get-host-info.sub.js
+// META: script=/common/utils.js
+// META: script=/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+// META: timeout=long
+
+'use strict';
+
+const TEST_VALUE = "popin-partition-test";
+
+async function seedPartition(remoteContextWrapper, name) {
+  await remoteContextWrapper.executeScript((name, TEST_VALUE) => {
+    window.localStorage.setItem(name, TEST_VALUE);
+    document.cookie = name + "-strict=" + TEST_VALUE + "; SameSite=Strict; Secure";
+    document.cookie = name + "-lax=" + TEST_VALUE + "; SameSite=Lax; Secure";
+    document.cookie = name + "-none=" + TEST_VALUE + "; SameSite=None; Secure";
+    document.cookie = name + "-partitioned-strict=" + TEST_VALUE + "; Partitioned; SameSite=Strict; Secure";
+    document.cookie = name + "-partitioned-lax=" + TEST_VALUE + "; Partitioned; SameSite=Lax; Secure";
+    document.cookie = name + "-partitioned-none=" + TEST_VALUE + "; Partitioned; SameSite=None; Secure";
+  }, [name, TEST_VALUE]);
+}
+
+async function openPopin(test, remoteContextWrapper, origin) {
+  const popin = await remoteContextWrapper.addWindow(
+    /*extraConfig=*/ origin ? { origin } : null,
+    /*options=*/ { features: "popin" });
+  assert_equals(await popin.executeScript(() => { return window.popinContextType(); }), "partitioned");
+  test.add_cleanup(async () => {
+    await popin.executeScript(() => { window.close(); });
+  });
+  return popin;
+}
+
+async function getCookies(remoteContextWrapper) {
+  return await remoteContextWrapper.executeScript((TEST_VALUE) => {
+    if (!document.cookie) {
+      return [];
+    }
+    const cookies = document.cookie.split(";");
+    let cookieNames = [];
+    for (let i = 0; i < cookies.length; i++) {
+      let cookieName = cookies[i].split("=")[0].trim();
+      let cookieValue = cookies[i].split("=")[1].trim();
+      if (cookieValue === TEST_VALUE) {
+        cookieNames.push(cookieName);
+      }
+    }
+    return cookieNames.sort();
+  }, [TEST_VALUE]);
+}
+
+async function getLocalStorage(remoteContextWrapper) {
+  return await remoteContextWrapper.executeScript((TEST_VALUE) => {
+    let storageNames = [];
+    for (let i = 0; i < window.localStorage.length; i++) {
+      if (window.localStorage.getItem(window.localStorage.key(i)) === TEST_VALUE) {
+        storageNames.push(window.localStorage.key(i));
+      }
+    }
+    return storageNames.sort();
+  }, [TEST_VALUE]);
+}
+
+const rcHelper = new RemoteContextHelper();
+const handles = {};
+
+promise_setup(async () => {
+  assert_in_array("partitioned", window.popinContextTypesSupported());
+
+  handles.main = await rcHelper.addWindow();
+  handles.frameSameSite = await handles.main.addIframe();
+  handles.frameCrossSite = await handles.main.addIframe(
+    /*extraConfig=*/ {
+      origin: "HTTPS_NOTSAMESITE_ORIGIN",
+    },
+    /*attributes=*/ {
+      allow: "popins",
+    }
+  );
+  handles.frameSameSiteWithCrossSiteAncestor =
+    await handles.frameCrossSite.addIframe(
+      /*extraConfig=*/ null,
+      /*attributes=*/ {
+        allow: "popins",
+      }
+    );
+  handles.crossSite = await rcHelper.addWindow(
+    /*extraConfig=*/ {
+      origin: "HTTPS_NOTSAMESITE_ORIGIN",
+    }
+  );
+  handles.crossSiteFrameSameSite = await handles.crossSite.addIframe();
+  Object.freeze(handles);
+
+  await seedPartition(handles.main, "main");
+  await seedPartition(handles.frameSameSite, "frameSameSite");
+  await seedPartition(handles.frameCrossSite, "frameCrossSite");
+  await seedPartition(handles.frameSameSiteWithCrossSiteAncestor, "frameSameSiteWithCrossSiteAncestor");
+  await seedPartition(handles.crossSite, "crossSite");
+  await seedPartition(handles.crossSiteFrameSameSite, "crossSiteFrameSameSite");
+});
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.main);
+
+  // The popin, it's opener and all their ancestors are same-site, so the popin
+  // should have access to all cookies and storage of the main host.
+  assert_array_equals(
+    await getCookies(popin),
+    [
+      "crossSiteFrameSameSite-none",
+      "frameSameSite-lax",
+      "frameSameSite-none",
+      "frameSameSite-partitioned-lax",
+      "frameSameSite-partitioned-none",
+      "frameSameSite-partitioned-strict",
+      "frameSameSite-strict",
+      "frameSameSiteWithCrossSiteAncestor-none",
+      "main-lax",
+      "main-none",
+      "main-partitioned-lax",
+      "main-partitioned-none",
+      "main-partitioned-strict",
+      "main-strict",
+    ]);
+  assert_array_equals(await getLocalStorage(popin), ["frameSameSite", "main"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Main site opens same-site popin.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.main, "HTTPS_NOTSAMESITE_ORIGIN");
+
+  // The popin is cross-site to its opener, so the popin should only have access
+  // to the local storage variable and SameSite=None cookies of the cross-site
+  // frame, and the unpartitioned SameSite=None cookie of the cross-site window.
+  assert_array_equals(await getCookies(popin), ["crossSite-none", "frameCrossSite-none", "frameCrossSite-partitioned-none"]);
+  assert_array_equals(await getLocalStorage(popin), ["frameCrossSite"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Main site opens cross-site popin.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.frameSameSite);
+
+  // The popin, it's opener and all their ancestors are same-site, so the popin
+  // should have access to all cookies and storage of the main host.
+  assert_array_equals(
+    await getCookies(popin),
+    [
+      "crossSiteFrameSameSite-none",
+      "frameSameSite-lax",
+      "frameSameSite-none",
+      "frameSameSite-partitioned-lax",
+      "frameSameSite-partitioned-none",
+      "frameSameSite-partitioned-strict",
+      "frameSameSite-strict",
+      "frameSameSiteWithCrossSiteAncestor-none",
+      "main-lax",
+      "main-none",
+      "main-partitioned-lax",
+      "main-partitioned-none",
+      "main-partitioned-strict",
+      "main-strict",
+    ]);
+  assert_array_equals(await getLocalStorage(popin), ["frameSameSite", "main"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Same-site frame opens same-site popin.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.frameCrossSite);
+
+  // The main-host popin has a cross-site ancestor, so it should only have
+  // access to the local storage variable and SameSite=None cookies set in a
+  // cross-site ancestor context, and the unpartitioned SameSite=None cookies of
+  // the main-host contexts.
+  assert_array_equals(await getCookies(popin),
+    [
+      "crossSiteFrameSameSite-none",
+      "frameSameSite-none",
+      "frameSameSiteWithCrossSiteAncestor-none",
+      "frameSameSiteWithCrossSiteAncestor-partitioned-none",
+      "main-none",
+    ]);
+  assert_array_equals(await getLocalStorage(popin), ["frameSameSiteWithCrossSiteAncestor"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Cross-site frame opens main-host popin.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.frameCrossSite, "HTTPS_NOTSAMESITE_ORIGIN");
+
+  // The popin and its opener is cross-site to the main frame, so the popin
+  // should only have access to the local storage variable and SameSite=None
+  // cookies of the cross-site frame, and the unpartitioned SameSite=None cookie
+  // of the cross-site window.
+  assert_array_equals(await getCookies(popin), ["crossSite-none", "frameCrossSite-none", "frameCrossSite-partitioned-none"]);
+  assert_array_equals(await getLocalStorage(popin), ["frameCrossSite"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Cross-site frame opens alternative-host popin.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.frameSameSiteWithCrossSiteAncestor);
+
+  // The main-host popin has a cross-site ancestor, so it should only have
+  // access to the local storage variable and SameSite=None cookies set in a
+  // cross-site ancestor context, and the unpartitioned SameSite=None cookies of
+  // the main-host contexts.
+  assert_array_equals(await getCookies(popin),
+    [
+      "crossSiteFrameSameSite-none",
+      "frameSameSite-none",
+      "frameSameSiteWithCrossSiteAncestor-none",
+      "frameSameSiteWithCrossSiteAncestor-partitioned-none",
+      "main-none",
+    ]);
+  assert_array_equals(await getLocalStorage(popin), ["frameSameSiteWithCrossSiteAncestor"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Same-site frame with cross-site ancestor opens main-host popin.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.main);
+
+  // The frame in the popin, the popin, it's opener and all their ancestors are
+  // same-site, so the popin should have access to all cookies and storage of
+  // the main host.
+  const popinFrame = await popin.addIframe();
+  assert_array_equals(
+    await getCookies(popinFrame),
+    [
+      "crossSiteFrameSameSite-none",
+      "frameSameSite-lax",
+      "frameSameSite-none",
+      "frameSameSite-partitioned-lax",
+      "frameSameSite-partitioned-none",
+      "frameSameSite-partitioned-strict",
+      "frameSameSite-strict",
+      "frameSameSiteWithCrossSiteAncestor-none",
+      "main-lax",
+      "main-none",
+      "main-partitioned-lax",
+      "main-partitioned-none",
+      "main-partitioned-strict",
+      "main-strict",
+    ]);
+  assert_array_equals(await getLocalStorage(popinFrame), ["frameSameSite", "main"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Main site opens same-site popin with same-site frame.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.main);
+
+  const popinFrame = await popin.addIframe(
+    /*extraConfig=*/ {
+      origin: "HTTPS_NOTSAMESITE_ORIGIN",
+    },
+    /*attributes=*/ {
+      allow: "popins",
+    }
+  );
+
+  // The frame in the popin is cross-site to the main frame, so the popin should
+  // only have access to the local storage variable and SameSite=None cookies of
+  // the cross-site frame, and the unpartitioned SameSite=None cookie of the
+  // cross-site window.
+  assert_array_equals(await getCookies(popinFrame), ["crossSite-none", "frameCrossSite-none", "frameCrossSite-partitioned-none"]);
+  assert_array_equals(await getLocalStorage(popinFrame), ["frameCrossSite"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Main site opens same-site popin with cross-site frame.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.main, "HTTPS_NOTSAMESITE_ORIGIN");
+
+  const popinFrame = await popin.addIframe();
+
+  // The main-host frame in the popin has a cross-site ancestor, so it should
+  // only have access to the local storage variable and SameSite=None cookies
+  // set in a cross-site ancestor context, and the unpartitioned SameSite=None
+  // cookies of the main-host contexts.
+  assert_array_equals(await getCookies(popinFrame),
+    [
+      "crossSiteFrameSameSite-none",
+      "frameSameSite-none",
+      "frameSameSiteWithCrossSiteAncestor-none",
+      "frameSameSiteWithCrossSiteAncestor-partitioned-none",
+      "main-none",
+    ]);
+  assert_array_equals(await getLocalStorage(popinFrame), ["frameSameSiteWithCrossSiteAncestor"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Main site opens cross-site popin with main-host frame.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.frameCrossSite);
+
+  const popinFrame = await popin.addIframe(
+    /*extraConfig=*/ {
+      origin: "HTTPS_NOTSAMESITE_ORIGIN",
+    },
+    /*attributes=*/ {
+      allow: "popins",
+    }
+  );
+
+  // The frame in the popin is cross-site to the main frame, so the popin should
+  // only have access to the local storage variable and SameSite=None cookies of
+  // the cross-site frame, and the unpartitioned SameSite=Nonecookie of the
+  // cross-site window.
+  assert_array_equals(await getCookies(popinFrame), ["crossSite-none", "frameCrossSite-none", "frameCrossSite-partitioned-none"]);
+  assert_array_equals(await getLocalStorage(popinFrame), ["frameCrossSite"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Cross-site frame opens main-host popin with cross-site frame.");
+
+promise_test(async t => {
+  const popin = await openPopin(t, handles.frameCrossSite, "HTTPS_NOTSAMESITE_ORIGIN");
+
+  const popinFrame = await popin.addIframe();
+
+  // The main-host frame in the popin has a cross-site ancestor, so it should
+  // only have access to the local storage variable and SameSite=None cookies
+  //set in a cross-site ancestor context, and the unpartitioned SameSite=None
+  // cookies of the main-host contexts.
+  assert_array_equals(await getCookies(popinFrame),
+    [
+      "crossSiteFrameSameSite-none",
+      "frameSameSite-none",
+      "frameSameSiteWithCrossSiteAncestor-none",
+      "frameSameSiteWithCrossSiteAncestor-partitioned-none",
+      "main-none",
+    ]);
+  assert_array_equals(await getLocalStorage(popinFrame), ["frameSameSiteWithCrossSiteAncestor"]);
+
+  t.done();
+}, "Verify Partitioned Popins have access to the proper cookie/storage partitions - Cross-site frame opens alternative-host popin with main-host frame.");
diff --git a/tests/wpt/tests/partitioned-popins/partitioned-popins.proxy-cross.tentative.sub.https.window.js b/tests/wpt/tests/partitioned-popins/partitioned-popins.proxy-cross.tentative.sub.https.window.js
new file mode 100644
index 00000000000..dd369736419
--- /dev/null
+++ b/tests/wpt/tests/partitioned-popins/partitioned-popins.proxy-cross.tentative.sub.https.window.js
@@ -0,0 +1,37 @@
+// META: script=/resources/testdriver.js
+// META: script=/resources/testdriver-vendor.js
+// META: script=/partitioned-popins/resources/proxy-helpers.js
+
+'use strict';
+
+// Spec: https://explainers-by-googlers.github.io/partitioned-popins/
+// Step 1 (window) Set up listener to resolve messages as they come in.
+// Step 2 (window) Open cross-site popin.
+// Step 3 (popin) Set up listener to resolve messages as they come in.
+// Step 4 (popin) Test and report usable methods against window.
+// Step 5 (window) Test and compare usable methods against popin.
+// Step 6 (popin) Cleanup.
+// Step 7 (window) Cleanup.
+
+async_test(t => {
+  let popin_proxy;
+
+  // Step 1
+  window.addEventListener("message", t.step_func(e => {
+    switch (e.data.type) {
+      case 'ready':
+        // Step 5
+        assert_equals(e.data.message, "Closed,Then,");
+        assert_equals(getUsableMethods(popin_proxy), "Closed,Then,");
+        popin_proxy.postMessage({type: "cleanup"}, "*");
+        break;
+      case 'cleanup':
+        // Step 7
+        t.done();
+        break;
+    }
+  }));
+
+  // Step 2
+  popin_proxy = window.open("https://{{hosts[alt][]}}:{{ports[https][0]}}/partitioned-popins/resources/partitioned-popins.proxy-popin.html", '_blank', 'popin');
+}, "Verify cross-site Partitioned Popins proxies only have access to postMessage and closed methods.");
diff --git a/tests/wpt/tests/partitioned-popins/partitioned-popins.proxy-same.tentative.https.window.js b/tests/wpt/tests/partitioned-popins/partitioned-popins.proxy-same.tentative.https.window.js
new file mode 100644
index 00000000000..1bda23eb7b6
--- /dev/null
+++ b/tests/wpt/tests/partitioned-popins/partitioned-popins.proxy-same.tentative.https.window.js
@@ -0,0 +1,39 @@
+// META: script=/resources/testdriver.js
+// META: script=/resources/testdriver-vendor.js
+// META: script=/partitioned-popins/resources/proxy-helpers.js
+
+'use strict';
+
+// Spec: https://explainers-by-googlers.github.io/partitioned-popins/
+// Step 1 (window) Set up listener to resolve messages as they come in.
+// Step 2 (window) Open same-origin popin.
+// Step 3 (popin) Set up listener to resolve messages as they come in.
+// Step 4 (popin) Test and report usable methods against window.
+// Step 5 (window) Test and compare usable methods against popin.
+// Step 6 (popin) Cleanup.
+// Step 7 (window) Cleanup.
+
+// TODO(crbug.com/340606651): Remove expectations file and secure same-origin popins.
+
+async_test(t => {
+  let popin_proxy;
+
+  // Step 1
+  window.addEventListener("message", t.step_func(e => {
+    switch (e.data.type) {
+      case 'ready':
+        // Step 5
+        assert_equals(e.data.message, "Closed,Then,");
+        assert_equals(getUsableMethods(popin_proxy), "Closed,Then,");
+        popin_proxy.postMessage({type: "cleanup"}, "*");
+        break;
+      case 'cleanup':
+        // Step 7
+        t.done();
+        break;
+    }
+  }));
+
+  // Step 2
+  popin_proxy = window.open("/partitioned-popins/resources/partitioned-popins.proxy-popin.html", '_blank', 'popin');
+}, "Verify same-origin Partitioned Popins proxies only have access to postMessage and closed methods.");
diff --git a/tests/wpt/tests/partitioned-popins/partitioned-popins.secure.tentative.sub.http.window.js b/tests/wpt/tests/partitioned-popins/partitioned-popins.secure.tentative.sub.http.window.js
index 1f73e7824fc..384a41f2e49 100644
--- a/tests/wpt/tests/partitioned-popins/partitioned-popins.secure.tentative.sub.http.window.js
+++ b/tests/wpt/tests/partitioned-popins/partitioned-popins.secure.tentative.sub.http.window.js
@@ -7,6 +7,7 @@
 // Step 1 - Try to open secure popin and see failure.
 // Step 2 - Try to open insecure popin and see failure.
 // Step 3 - Try to open path-only popin and see failure.
+// Step 3 - Try to open empty popin and see failure.
 
 async_test(t => {
   let targets = "";
@@ -29,6 +30,12 @@ async_test(t => {
     targets += "PathOnly-";
   } catch (_) {}
 
+  // Step 4
+  try {
+    window.open("", '_blank', 'popin');
+    targets += "Empty-";
+  } catch (_) {}
+
   assert_equals(targets, "");
   t.done();
 }, "Verify no Partitioned Popins can be opened from insecure page");
diff --git a/tests/wpt/tests/partitioned-popins/partitioned-popins.secure.tentative.sub.https.window.js b/tests/wpt/tests/partitioned-popins/partitioned-popins.secure.tentative.sub.https.window.js
index 6358e6215f2..bea1b0f074a 100644
--- a/tests/wpt/tests/partitioned-popins/partitioned-popins.secure.tentative.sub.https.window.js
+++ b/tests/wpt/tests/partitioned-popins/partitioned-popins.secure.tentative.sub.https.window.js
@@ -7,6 +7,7 @@
 // Step 1 - Try to open secure popin and see success.
 // Step 2 - Try to open insecure popin and see failure.
 // Step 3 - Try to open path-only popin and see success.
+// Step 4 - Try to open empty popin and see failure.
 
 async_test(t => {
   let targets = "";
@@ -29,6 +30,12 @@ async_test(t => {
     targets += "PathOnly-";
   } catch (_) {}
 
+  // Step 4
+  try {
+    window.open("", '_blank', 'popin');
+    targets += "Empty-";
+  } catch (_) {}
+
   assert_equals(targets, "Secure-PathOnly-");
   t.done();
 }, "Verify only secure Partitioned Popins can be opened from secure page");
diff --git a/tests/wpt/tests/partitioned-popins/resources/partitioned-popins.proxy-popin.html b/tests/wpt/tests/partitioned-popins/resources/partitioned-popins.proxy-popin.html
new file mode 100644
index 00000000000..d1b7b869338
--- /dev/null
+++ b/tests/wpt/tests/partitioned-popins/resources/partitioned-popins.proxy-popin.html
@@ -0,0 +1,24 @@
+<!doctype html>
+<meta charset="utf-8">
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/partitioned-popins/resources/proxy-helpers.js"></script>
+<script>
+(async function() {
+  test_driver.set_test_context(window.opener);
+
+  // Step 3 (partitioned-popins/partitioned-popins.proxy-{}.tentative.sub.https.window.js)
+  window.addEventListener("message", e => {
+    switch (e.data.type) {
+      case 'cleanup':
+        // Step 6 (partitioned-popins/partitioned-popins.proxy-{}.tentative.sub.https.window.js)
+        window.opener.postMessage({type: "cleanup"}, "*");
+        window.close();
+        break;
+    }
+  });
+
+  // Step 4 (partitioned-popins/partitioned-popins.proxy-{}.tentative.sub.https.window.js)
+  window.opener.postMessage({type: "ready", message: getUsableMethods(window.opener)}, "*");
+})();
+</script>
diff --git a/tests/wpt/tests/partitioned-popins/resources/proxy-helpers.js b/tests/wpt/tests/partitioned-popins/resources/proxy-helpers.js
new file mode 100644
index 00000000000..46359df0dc7
--- /dev/null
+++ b/tests/wpt/tests/partitioned-popins/resources/proxy-helpers.js
@@ -0,0 +1,58 @@
+'use strict';
+
+function customMethod() {
+}
+
+let customAttribute = "";
+
+function getUsableMethods(proxy) {
+  let message = "";
+  try {
+    proxy.closed;
+    message += "Closed,"
+  } catch (_) {}
+  try {
+    proxy.blur();
+    message += "Blur,"
+  } catch (_) {}
+  try {
+    proxy.onblur;
+    message += "OnBlur,"
+  } catch (_) {}
+  try {
+    proxy.opener;
+    message += "Opener,"
+  } catch (_) {}
+  try {
+    proxy.length;
+    message += "Length,"
+  } catch (_) {}
+  try {
+    proxy.name = "foo";
+    message += "Name,"
+  } catch (_) {}
+  try {
+    proxy[0];
+    message += "AnonymousIndex,"
+  } catch (_) {}
+  try {
+    proxy['test'];
+    message += "AnonymousName,"
+  } catch (_) {}
+  try {
+    proxy.customMethod();
+    message += "CustomMethod,"
+  } catch (_) {}
+  try {
+    proxy.customAttribute;
+    message += "CustomAttributeGet,"
+  } catch (_) {}
+  try {
+    proxy.customAttribute = "";
+    message += "CustomAttributeSet,"
+  } catch (_) {}
+  if (proxy.then == undefined) {
+    message += "Then,"
+  }
+  return message;
+}
diff --git a/tests/wpt/tests/shadow-dom/reference-target/tentative/property-reflection.html b/tests/wpt/tests/shadow-dom/reference-target/tentative/property-reflection.html
index b182087aaed..7ebbc0c4c58 100644
--- a/tests/wpt/tests/shadow-dom/reference-target/tentative/property-reflection.html
+++ b/tests/wpt/tests/shadow-dom/reference-target/tentative/property-reflection.html
@@ -75,7 +75,7 @@
         test_property_reflection(referencing_element_type, referenced_element_type, "aria-details", "ariaDetailsElements", Behavior.ReflectsHostInArray);
         test_property_reflection(referencing_element_type, referenced_element_type, "aria-errormessage", "ariaErrorMessageElements", Behavior.ReflectsHostInArray);
         test_property_reflection(referencing_element_type, referenced_element_type, "aria-flowto", "ariaFlowToElements", Behavior.ReflectsHostInArray);
-        test_property_reflection(referencing_element_type, referenced_element_type, "aria-labeledby", "ariaLabelledByElements", Behavior.ReflectsHostInArray);
+        test_property_reflection(referencing_element_type, referenced_element_type, "aria-labelledby", "ariaLabelledByElements", Behavior.ReflectsHostInArray);
         test_property_reflection(referencing_element_type, referenced_element_type, "aria-owns", "ariaOwnsElements", Behavior.ReflectsHostInArray);
 
         test_property_reflection(referencing_element_type, referenced_element_type, "anchor", "anchorElement", Behavior.ReflectsHost);
diff --git a/tests/wpt/tests/storage/buckets/WEB_FEATURES.yml b/tests/wpt/tests/storage/buckets/WEB_FEATURES.yml
new file mode 100644
index 00000000000..f14b4c0f51e
--- /dev/null
+++ b/tests/wpt/tests/storage/buckets/WEB_FEATURES.yml
@@ -0,0 +1,3 @@
+features:
+- name: storage-buckets
+  files: "**"
diff --git a/tests/wpt/tests/svg/painting/reftests/non-scaling-stroke-007-ref.html b/tests/wpt/tests/svg/painting/reftests/non-scaling-stroke-007-ref.html
new file mode 100644
index 00000000000..d0f84d73fc0
--- /dev/null
+++ b/tests/wpt/tests/svg/painting/reftests/non-scaling-stroke-007-ref.html
@@ -0,0 +1,5 @@
+<!doctype html>
+<title>CSS Test Reference</title>
+<svg width="100" height="100">
+  <path d="M 0 0 L 0 300 L 300 0 z" fill="none" stroke="currentColor" stroke-width="20"></path>
+</svg>
diff --git a/tests/wpt/tests/svg/painting/reftests/non-scaling-stroke-007.html b/tests/wpt/tests/svg/painting/reftests/non-scaling-stroke-007.html
new file mode 100644
index 00000000000..2b63060466d
--- /dev/null
+++ b/tests/wpt/tests/svg/painting/reftests/non-scaling-stroke-007.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>non-scaling-stroke on a nested SVG</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1917604">
+<link rel="help" href="https://svgwg.org/svg2-draft/painting.html#PaintingVectorEffects">
+<link rel="match" href="non-scaling-stroke-007-ref.html">
+<svg width="100" height="100">
+  <svg width="100%" height="100%" viewBox="0 0 1 1" preserveAspectRatio="none">
+    <path d="M 0 0 L 0 50 L 50 0 z" fill="none" stroke="currentColor" stroke-width="20" vector-effect="non-scaling-stroke"></path>
+  </svg>
+</svg>
diff --git a/tests/wpt/tests/tools/certs/cacert.key b/tests/wpt/tests/tools/certs/cacert.key
index efd07b43853..421cae4c51a 100644
--- a/tests/wpt/tests/tools/certs/cacert.key
+++ b/tests/wpt/tests/tools/certs/cacert.key
@@ -1,30 +1,30 @@
 -----BEGIN ENCRYPTED PRIVATE KEY-----
-MIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQITmpQHgpujFYCAggA
-MAwGCCqGSIb3DQIJBQAwFAYIKoZIhvcNAwcECFapQ7gWyWd1BIIEyAQJKpUrgOnb
-fgB95Ka3LwheDI2Ls1NYrzuKLTzn+M3n0nd+5ZskvrOJeCPjSCV8LMk7aqDFOAqy
-LSx3IXnPK2bcbxV15sGuKkkRGQj5RFPZvvLg6+CKIER7QOfXjaZSzTF4kvsW9DvQ
-lgFjFuAc31IzL7Z/yeLO/Y4TS5p1evJUEz6GLNspYmkZMguwYwwYt+pYb1pGjvBY
-txMl8U3CzpliYfbrZTU2ttmvkDJGJaQmpU2ZUPJgenpkB3zKQxZDEConserGAgZn
-ddlANYrGlfVBy1DL4pqOrPCjTUyifockvgXUCON0HRBELOPY4m3KvsW5zTJACQwz
-81OLqgkOssQYMHz54m/bPWbCGubZ0Iz4kcasNb/ijaSbY/o+Csddf1CqvJ4S6fqb
-W2nf0jsXUNjoAGxsAxWTJQsUfvwLx2I8rF2Cd9Wd2cfo84OdIKzYT7tWVhDRV7+j
-lsY53plSdcJZVbvZPIV6Uxjd9X+TPGpezGG/w1/RgtPu1f/NUoQqYXzrwTSWCBEP
-r5ai6nsdG1EhoXni8INIWLXMdWnPYeaJcVUfcbI5IykFRTR+PxdIXxWCLkMb5CAN
-7tDCyfFmiVodXK3AUkLJTJ5aBM9wiG8L/6rFDZnqan0FCQkl+gPgw6G5JylRbncN
-iI84tSF3vnI9szxHrr2mVLExRrXRCIr2gskda5gtbDfl/PjAtC3MmLIH+OUbQlf0
-WPNjOV/DNMt+ceHiSGETR29RjeSXYkhcXBw9m1C7Uqi1Tc5Q8UkQlUimEa88g1vy
-BoGFuyG8R+IWAbcCaimsS66Xvq/oTaq8RUT4x9EhvbQRcuxOCP6fvsddlhe9rV++
-7CKmk6DJjROa4PliYK4TykpuA2Gx6lYO5UF5unaHWQrlUI6QGbCy3bMIgylU+zKk
-KUqluSPXojQD2a5KlYBZUHfbvoD1OPluWimd0C2AXDCeK2Tx8JHQM3FZG8aO5T4i
-wkKQSjJNR84NZYw/Ns8l6H02sX+r97Cu9JgYEI+Jf7oiCOzyMaOJCEJ0tTyoxVg7
-j/nkinZysYiKJKe06x0Em49vt1DbR7ggc3y35ynSwMJbuc+NdmZ5qwWawum1RDgs
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-OpygKfWVLQ2xpEgZG5puLvFphPQNDJT1b97n16EW1NIKn4tIt2vJnHGBTfvP4hL/
-uvB1C4GJAmw4j9haLriefWX7OE3VvZXZBzRvVrHddPovjRxJPnBq3HWAkZ9Npn89
-DIE9k8tUJTFRSidEDIIRDcMdO+wh4ozf5vuDatI5gF4fApFBryQ65HYH/A2mY80j
-lZYQYnEuXr4HqZx9DdLcmelaNn8Vezjhvik4dQt9THEEOhK3rWwyifBsRS/Awdw4
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-jqhELBl9yJwX+H/AORgnPQ==
+MIIFHDBOBgkqhkiG9w0BBQ0wQTApBgkqhkiG9w0BBQwwHAQISJq4lddWxR0CAggA
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+mBBLYoyqfK6BXSQc1NGYvj/jMkJnaL5TcsHUYPB66225PCPl9xr8lug6dtTFeIg0
+/lGeB0ppGtu4npfSV1YBaKvNfs0EWKK0wbarbLl97yoGBOnT5cTe9Mzkohry3Uoc
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+/12tvDds8/n8ZAwS3uLrawxTSOUD3AbVi80brsyF3dfavycUY5ViI7i/5Ie/mIt0
+acX0VWH0mSZgSUeox0pPtB8B6ow3/DIGrdZ5r34Hm4XT1VynMm0jgAq7AUv3gVwJ
+GUMWU6teGv+Jov/CKUwfe0xWgVqcd/aJgVS1U8pu729l5WBhHTxh2xVK3ciBN8bv
+UeDxQ//R4iyzwXG352JHpA==
 -----END ENCRYPTED PRIVATE KEY-----
diff --git a/tests/wpt/tests/tools/certs/cacert.pem b/tests/wpt/tests/tools/certs/cacert.pem
index 2e8683fe453..cf16ae8aea3 100644
--- a/tests/wpt/tests/tools/certs/cacert.pem
+++ b/tests/wpt/tests/tools/certs/cacert.pem
@@ -1,125 +1,125 @@
 -----BEGIN CERTIFICATE-----
-MIIW5zCCFc+gAwIBAgIDBjzhMA0GCSqGSIb3DQEBCwUAMB0xGzAZBgNVBAMMEndl
-Yi1wbGF0Zm9ybS10ZXN0czAeFw0yNDA4MTIwMTAxMzZaFw0yNTA4MTIwMTAxMzZa
+MIIW5zCCFc+gAwIBAgIDAb4YMA0GCSqGSIb3DQEBCwUAMB0xGzAZBgNVBAMMEndl
+Yi1wbGF0Zm9ybS10ZXN0czAeFw0yNDA5MTIwMTAzMTBaFw0yNTA5MTIwMTAzMTBa
 MB0xGzAZBgNVBAMMEndlYi1wbGF0Zm9ybS10ZXN0czCCASIwDQYJKoZIhvcNAQEB
-BQADggEPADCCAQoCggEBALEnHTdGG/kOth+k7j34pG32Tzl+xa4ulyRLlO1mnxJx
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+bm90LXdlYi1wbGF0Zm9ybS50ZXN0gjJ4bi0tbjhqNmRzNTNsd3drcnFodjI4YS53
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 bGFkLnhuLS1uOGo2ZHM1M2x3d2tycWh2MjhhLndlYi1wbGF0Zm9ybS50ZXN0gjZ4
 bi0tbjhqNmRzNTNsd3drcnFodjI4YS54bi0tbHZlLTZsYWQud2ViLXBsYXRmb3Jt
-LnRlc3SCOnhuLS1uOGo2ZHM1M2x3d2tycWh2MjhhLnhuLS1sdmUtNmxhZC5ub3Qt
-d2ViLXBsYXRmb3JtLnRlc3SCOnhuLS1sdmUtNmxhZC54bi0tbjhqNmRzNTNsd3dr
-cnFodjI4YS5ub3Qtd2ViLXBsYXRmb3JtLnRlc3SCQXhuLS1uOGo2ZHM1M2x3d2ty
+LnRlc3SCOnhuLS1sdmUtNmxhZC54bi0tbjhqNmRzNTNsd3drcnFodjI4YS5ub3Qt
+d2ViLXBsYXRmb3JtLnRlc3SCOnhuLS1uOGo2ZHM1M2x3d2tycWh2MjhhLnhuLS1s
+dmUtNmxhZC5ub3Qtd2ViLXBsYXRmb3JtLnRlc3SCQXhuLS1uOGo2ZHM1M2x3d2ty
 cWh2MjhhLnhuLS1uOGo2ZHM1M2x3d2tycWh2MjhhLndlYi1wbGF0Zm9ybS50ZXN0
 gkV4bi0tbjhqNmRzNTNsd3drcnFodjI4YS54bi0tbjhqNmRzNTNsd3drcnFodjI4
-YS5ub3Qtd2ViLXBsYXRmb3JtLnRlc3QwDQYJKoZIhvcNAQELBQADggEBAF/pURME
-NCx2OU8SxM3naApCfB/pYEX1mZm6rPEl7WCYaZy04z/eW8QL20n6qKNOYtENMwZy
-FEJyz3S0JMSJ5z/ZTWCwMbNVscIUjUT2ThXRgw7x8xLz9ob8fIxiC1Q2mVTwuVUV
-eJJ2ChAr4JKiReztuqdxoCsK2mxARSr0hEhqKSD2MFZXRW2BGs1ZXlUvRWV7nVw4
-/LnIdewpEOdKdDq8Z1g1eY/BXy58/HCw30zoLRdgfDOIoFrDHAcbB1oMA4U6EXcP
-vw7wEpcBMKZ8h0V5+ObZgaY/+qKi0QikZZYZy5gJHAch/3+cTU23pkMsCKiJLNQI
-hKcelbLd+4Arxtg=
+YS5ub3Qtd2ViLXBsYXRmb3JtLnRlc3QwDQYJKoZIhvcNAQELBQADggEBAG0UL9KU
+qA8vHcdylWhvBI3cITzCn1kyX31Lr/9x68SEMV50pY7AFZMEBTVT1OzACzk9rc/p
+OIRo1m+Z5CGhng6wOThjFtfYTmOvSqlLdYr/AOND9PvJ8iR4zbXpwTSQgiVBgW3u
+aIYbBHbrOTD7mFdcrIo8nPc6seilpbzcEvLLAiGV7qgLvJXrC6lIg2eKXQHCuZO1
+SpQKhKi1+11JvbU3d9h96iVLG4WOVxmhALkJJvAZ7kPaTs76md4G6/B7WcO+F5wc
+oEgnZoLU0rDMPDFCWsKLWVadseJiRCMs6Nrjog8Y1bMQPLTzCDO/8l2h8Ny1lxWx
+GfyYQSXWV8lnS0w=
 -----END CERTIFICATE-----
diff --git a/tests/wpt/tests/tools/certs/web-platform.test.key b/tests/wpt/tests/tools/certs/web-platform.test.key
index 9a97431ec7d..0df3f579240 100644
--- a/tests/wpt/tests/tools/certs/web-platform.test.key
+++ b/tests/wpt/tests/tools/certs/web-platform.test.key
@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQCpWZ4n9mkUhBok
-TuG3lVduL4dZlDxb0ztgwSLDnrAiB71GMxqtcpHlT/C4rgKVytqUa73p9iIIu3Wq
-cIkQBaJ5PwCsH665B3SwNuHYWlguAc+e2f4PkhB8qHhWQaSO50YT/F6NNaoc+JtY
-x+PeUyY81GRnEL5fCkJsuE0Vp7giCb99OFGSB2OpXB4LWgPJ5CLMW1qt7S0e78GA
-ukJLtE4aMZqLIVxkNgwJALYXDX3NJfY8P4PSeOuMu4vHUCSNBCdkhwFh5J7kkquX
-Ni8b7C9Z1zGqnAip5odHkX+OOya/zJJ7iN90PWk02/vatlRqK0KSRUOkNoerAQMj
-uDOoZ7jRAgMBAAECggEBAIn6LlW4+hxxFSuH6Xe+AaIQr2JY2GSoUbSfJ0fivva6
-/4d2k8HFmwEOhL6zZ//LaxOKRQ2eMFSVB2V6kvGu5ZWLs2yJ072FSZlY3eF8mmPB
-rftq+QiOpUgrqv/8M6sK25nlANRkaNl55HgNRKcbcAgXtEYU6kZdAYm7D3MZV3jC
-zOlDl26QJ2IP+Vls6SCsqQTnu+CybXtjLO5Cb7uzzif1b+tpSEBUPAOad6Cnb0PO
-ctLrQBEIa419o1BnAWpU+kOoafwGSszM7OaJc2FmKUvgbXtiUdci8AG09FRFyqrd
-Y12wYJ0wAdC5GVr+EWTIOQsdjo38eJLEmsPfYaRXjMECgYEA2H72HrXlwgLx37x+
-SI0bDLzqlDd9+9zvZH/0Wo8rbsothUu8PTrUGqEEuobaT1vsuMjBMFXi3yjTbVRn
-Ot8eo9bUIHI+/jz2UDKNpFk2Ids9ffgQXFNVYoVoKzhV3lRTIh07eqM8Q91uKpyv
-vyIYnu92XCYg1inG6MRxZIGYLMUCgYEAyEBcZEoARcKb5YxKxp8K0YM2FqQ8/pn3
-HkRC+Jo1jnYkiCeqrhVluCSfA5VrsqLdp7AQrJpdzE8mpx3sYA4s1P9GJ1qKdW7d
-r7z/aCGwkv+Pgx8v2HpKdaVaLxFdSAh64r9ItBasWQ9E9ZoyBKt2PPtvGtUxhtuV
-5fBONFVPdJ0CgYBs37xqSVOYM97rg2GGnt+hkkft7dI/nSYOxoJeIG3ZM3ec9y9d
-I36TPbKhEzwqeLIdY2g0JJ0JWQCqlK2tX5OLFXhsMMgZFxNP1XyB0BN3B0hvVxbz
-Nz1TZH+0bIpSWtnL6COHUxv1jR/f8hg36K+1DfvZ75rH2Q6c9F2KC9o5eQKBgGt0
-Vd+e8fx9DCimGm3wY96/GOQXZ397YOaF3KYIIdr7PGkvV+AoLTgdtpI2uN7XlDdq
-O9hS0ShUBLrCTNfSY248OQnfBNM1FZI6yZa4FUccCYdj0cnI/XGZtAXzvGlt23sX
-B81TKVJ05h0gi9yDoWPhy+HLKtNhu1LymxRr/sHlAoGAOKL7QvaBZRjS81PRd3IU
-NvdWK4N1Crtb/4SxVRziIApCpSZkqt6qjz17nX5L3U95s1N98Z+iiJc6kbUC+G44
-IQ17SFnyXb2UW43b9fqz+f046Yo0DOBOsNMolRzN204Mx7vUD97HQ2NuEnxDwb5+
-dO+J6L8VI3Y7T8bkeco50s0=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 -----END PRIVATE KEY-----
diff --git a/tests/wpt/tests/tools/certs/web-platform.test.pem b/tests/wpt/tests/tools/certs/web-platform.test.pem
index d27cc98d038..1c5859d2066 100644
--- a/tests/wpt/tests/tools/certs/web-platform.test.pem
+++ b/tests/wpt/tests/tools/certs/web-platform.test.pem
@@ -1,133 +1,133 @@
 Certificate:
     Data:
         Version: 3 (0x2)
-        Serial Number: 408802 (0x63ce2)
+        Serial Number: 114201 (0x1be19)
         Signature Algorithm: sha256WithRSAEncryption
         Issuer: CN=web-platform-tests
         Validity
-            Not Before: Aug 12 01:01:36 2024 GMT
-            Not After : Aug 12 01:01:36 2025 GMT
+            Not Before: Sep 12 01:03:10 2024 GMT
+            Not After : Sep 12 01:03:10 2025 GMT
         Subject: CN=web-platform.test
         Subject Public Key Info:
             Public Key Algorithm: rsaEncryption
                 RSA Public-Key: (2048 bit)
                 Modulus:
-                    00:a9:59:9e:27:f6:69:14:84:1a:24:4e:e1:b7:95:
-                    57:6e:2f:87:59:94:3c:5b:d3:3b:60:c1:22:c3:9e:
-                    b0:22:07:bd:46:33:1a:ad:72:91:e5:4f:f0:b8:ae:
-                    02:95:ca:da:94:6b:bd:e9:f6:22:08:bb:75:aa:70:
-                    89:10:05:a2:79:3f:00:ac:1f:ae:b9:07:74:b0:36:
-                    e1:d8:5a:58:2e:01:cf:9e:d9:fe:0f:92:10:7c:a8:
-                    78:56:41:a4:8e:e7:46:13:fc:5e:8d:35:aa:1c:f8:
-                    9b:58:c7:e3:de:53:26:3c:d4:64:67:10:be:5f:0a:
-                    42:6c:b8:4d:15:a7:b8:22:09:bf:7d:38:51:92:07:
-                    63:a9:5c:1e:0b:5a:03:c9:e4:22:cc:5b:5a:ad:ed:
-                    2d:1e:ef:c1:80:ba:42:4b:b4:4e:1a:31:9a:8b:21:
-                    5c:64:36:0c:09:00:b6:17:0d:7d:cd:25:f6:3c:3f:
-                    83:d2:78:eb:8c:bb:8b:c7:50:24:8d:04:27:64:87:
-                    01:61:e4:9e:e4:92:ab:97:36:2f:1b:ec:2f:59:d7:
-                    31:aa:9c:08:a9:e6:87:47:91:7f:8e:3b:26:bf:cc:
-                    92:7b:88:df:74:3d:69:34:db:fb:da:b6:54:6a:2b:
-                    42:92:45:43:a4:36:87:ab:01:03:23:b8:33:a8:67:
-                    b8:d1
+                    00:ce:a2:f7:62:3b:75:0f:c4:81:f4:b3:f3:c1:db:
+                    1d:cc:04:b2:5a:83:ee:d7:aa:37:df:c6:b1:81:e4:
+                    03:86:06:84:4d:fb:09:67:11:d5:02:2b:bf:42:74:
+                    54:7e:3b:87:b7:d0:0a:c2:24:dc:e6:70:e0:e3:ad:
+                    36:88:0b:1e:89:a4:bf:68:a8:49:bc:57:14:7b:48:
+                    bc:10:47:a8:7f:d6:63:78:ac:ae:0a:9e:a1:d5:c7:
+                    18:94:74:36:88:37:39:0d:cc:a0:75:7c:e4:81:87:
+                    e1:5c:f4:5b:29:21:cf:b5:05:b0:21:65:89:a8:01:
+                    72:7f:c3:37:ef:09:31:de:10:4f:9f:a6:84:3c:35:
+                    be:d4:77:20:4d:26:0b:1b:f6:ed:5f:f2:16:a1:02:
+                    20:6b:17:2d:62:1d:c1:b8:a7:5d:18:9d:42:55:39:
+                    f7:08:7a:25:56:3e:35:f7:10:78:1b:be:05:1d:32:
+                    ec:8c:5b:9e:f2:f3:76:47:e8:f4:3e:80:b6:00:03:
+                    c0:eb:c1:3e:1e:b4:eb:55:e9:80:d1:f9:bf:41:b2:
+                    ae:a3:58:23:c5:76:67:12:20:63:d3:4c:3f:08:bc:
+                    07:a9:32:c8:2d:d9:77:f1:f0:d5:20:77:82:1a:b6:
+                    98:cf:66:67:94:f4:7e:79:5b:19:ac:23:4f:7b:2c:
+                    cc:2d
                 Exponent: 65537 (0x10001)
         X509v3 extensions:
             X509v3 Basic Constraints: 
                 CA:FALSE
             X509v3 Subject Key Identifier: 
-                66:7B:1B:9E:50:93:B0:87:2A:3D:B8:C9:9B:36:97:2C:D4:41:5C:08
+                43:82:25:04:5A:01:43:01:03:CE:51:1D:0C:4F:F6:48:3A:91:55:1A
             X509v3 Authority Key Identifier: 
-                keyid:F8:49:74:07:1B:4F:1A:59:79:31:26:F8:C4:AB:D5:6F:7E:50:B1:D2
+                keyid:FE:64:41:FD:EB:25:D2:54:6A:A6:E1:36:F6:12:2A:56:F9:82:F6:B5
 
             X509v3 Key Usage: 
                 Digital Signature, Non Repudiation, Key Encipherment
             X509v3 Extended Key Usage: 
                 TLS Web Server Authentication
             X509v3 Subject Alternative Name: 
-                DNS:web-platform.test, DNS:www.web-platform.test, DNS:not-web-platform.test, DNS:www2.web-platform.test, DNS:www1.web-platform.test, DNS:www.not-web-platform.test, DNS:www.www.web-platform.test, DNS:www.www2.web-platform.test, DNS:www1.not-web-platform.test, DNS:www2.www.web-platform.test, DNS:www.www1.web-platform.test, DNS:www2.not-web-platform.test, DNS:www1.www.web-platform.test, DNS:www1.www1.web-platform.test, DNS:www2.www1.web-platform.test, DNS:www2.www2.web-platform.test, DNS:www1.www2.web-platform.test, DNS:www.www.not-web-platform.test, DNS:www.www2.not-web-platform.test, DNS:www1.www.not-web-platform.test, DNS:xn--lve-6lad.web-platform.test, DNS:www.www1.not-web-platform.test, DNS:www2.www.not-web-platform.test, DNS:www2.www1.not-web-platform.test, DNS:www1.www1.not-web-platform.test, DNS:www2.www2.not-web-platform.test, DNS:www1.www2.not-web-platform.test, DNS:www.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.www.web-platform.test, DNS:xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www2.web-platform.test, DNS:www2.xn--lve-6lad.web-platform.test, DNS:www1.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.www1.web-platform.test, DNS:www.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www.not-web-platform.test, DNS:www2.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www2.not-web-platform.test, DNS:xn--lve-6lad.www1.not-web-platform.test, DNS:www1.xn--lve-6lad.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--lve-6lad.xn--lve-6lad.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www.web-platform.test, DNS:www.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www2.web-platform.test, DNS:www2.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:www1.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www1.web-platform.test, DNS:xn--lve-6lad.xn--lve-6lad.not-web-platform.test, DNS:www.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www.not-web-platform.test, DNS:www2.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:www1.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www2.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www1.not-web-platform.test, DNS:xn--lve-6lad.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--lve-6lad.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test
+                DNS:web-platform.test, DNS:not-web-platform.test, DNS:www.web-platform.test, DNS:www2.web-platform.test, DNS:www1.web-platform.test, DNS:www.www.web-platform.test, DNS:www.not-web-platform.test, DNS:www.www1.web-platform.test, DNS:www2.www.web-platform.test, DNS:www1.not-web-platform.test, DNS:www1.www.web-platform.test, DNS:www2.not-web-platform.test, DNS:www.www2.web-platform.test, DNS:www1.www2.web-platform.test, DNS:www2.www1.web-platform.test, DNS:www2.www2.web-platform.test, DNS:www1.www1.web-platform.test, DNS:www.www.not-web-platform.test, DNS:www.www1.not-web-platform.test, DNS:www.www2.not-web-platform.test, DNS:xn--lve-6lad.web-platform.test, DNS:www2.www.not-web-platform.test, DNS:www1.www.not-web-platform.test, DNS:www2.www2.not-web-platform.test, DNS:www1.www2.not-web-platform.test, DNS:www1.www1.not-web-platform.test, DNS:www2.www1.not-web-platform.test, DNS:xn--lve-6lad.not-web-platform.test, DNS:www.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.www.web-platform.test, DNS:www1.xn--lve-6lad.web-platform.test, DNS:www2.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.www1.web-platform.test, DNS:xn--lve-6lad.www2.web-platform.test, DNS:www.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www.not-web-platform.test, DNS:www2.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www1.not-web-platform.test, DNS:www1.xn--lve-6lad.not-web-platform.test, DNS:xn--lve-6lad.www2.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--lve-6lad.xn--lve-6lad.web-platform.test, DNS:www.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www2.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www1.web-platform.test, DNS:www1.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:www2.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--lve-6lad.xn--lve-6lad.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www.not-web-platform.test, DNS:www.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www1.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.www2.not-web-platform.test, DNS:www1.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:www2.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--lve-6lad.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--lve-6lad.web-platform.test, DNS:xn--lve-6lad.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--lve-6lad.not-web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--n8j6ds53lwwkrqhv28a.web-platform.test, DNS:xn--n8j6ds53lwwkrqhv28a.xn--n8j6ds53lwwkrqhv28a.not-web-platform.test
     Signature Algorithm: sha256WithRSAEncryption
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-         65:49:f9:e7:30:0d:d2:3b:c8:a0:b5:63:42:77:3c:10:f2:79:
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-         23:d3:2a:aa:2f:f7:1f:b1:2e:d4:07:6f:56:f8:ab:90:f1:a5:
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-         02:61:9d:ac:7f:b4:c3:34:bc:9a:83:e3:ef:8d:dc:3b:cc:18:
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-         75:a3:7b:0f:9b:66:47:74:68:10:0a:aa:4b:3c:55:b1:59:8d:
-         0f:24:7b:3b:93:ed:30:69:cd:08:f9:c5:90:34:fc:21:8c:cb:
-         9b:8b:ef:5e:4e:d3:a1:86:3b:e9:7d:1c:79:aa:a2:3e:df:b8:
-         09:09:01:82
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+         17:00:42:f2:52:8e:58:04:dd:49:71:c1:ed:d2:e9:98:c8:dc:
+         67:92:bb:60:15:df:37:5b:24:ef:ea:20:05:4d:fe:00:88:c3:
+         d7:6c:d3:95:6e:28:c6:7e:dd:f4:fe:dd:bc:06:36:b2:b2:59:
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+         7f:39:e4:cb:d6:c3:5f:c1:a1:90:ff:9e:4c:6d:6a:e2:44:2e:
+         09:d8:85:44:69:f8:55:ab:84:98:83:c6:e7:ed:e0:45:5d:f1:
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+         45:37:bd:73:e6:ad:fa:c8:15:b3:90:bd:17:ec:9b:ae:63:e9:
+         98:8a:36:da:99:7a:77:0c:8c:a9:98:70:af:97:69:e5:90:c1:
+         4d:99:b2:a5
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
diff --git a/tests/wpt/tests/tools/ci/check_for_updated_refs.py b/tests/wpt/tests/tools/ci/check_for_updated_refs.py
new file mode 100644
index 00000000000..b7b3cfdc72e
--- /dev/null
+++ b/tests/wpt/tests/tools/ci/check_for_updated_refs.py
@@ -0,0 +1,47 @@
+import json
+import os
+import re
+import sys
+from typing import IO, Container, Dict, Iterable, List, Optional
+
+GIT_PUSH = re.compile(
+    r"^(?P<flag>.)\t(?P<from>[^\t:]*):(?P<to>[^\t:]*)\t(?P<summary>.*[^\)])(?: \((?P<reason>[^\)]*)\))?\n$"
+)
+
+
+def parse_push(fd: IO[str]) -> Iterable[Dict[str, Optional[str]]]:
+    for line in fd:
+        m = GIT_PUSH.match(line)
+        if m is not None:
+            yield m.groupdict()
+
+
+def process_push(fd: IO[str], refs: Container[str]) -> List[str]:
+    updated_refs = []
+
+    for ref_status in parse_push(fd):
+        flag = ref_status["flag"]
+        if flag not in (" ", "+", "-", "*"):
+            continue
+
+        to = ref_status["to"]
+        assert to is not None
+        if to in refs:
+            updated_refs.append(to)
+
+    return updated_refs
+
+
+def main() -> None:
+    git_push_output = os.environ["GIT_PUSH_OUTPUT"]
+    refs = json.loads(os.environ["REFS"])
+
+    with open(git_push_output, "r") as fd:
+        updated_refs = process_push(fd, refs)
+
+    json.dump(updated_refs, sys.stdout, indent=2)
+    sys.stdout.write("\n")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/wpt/tests/tools/ci/epochs_update.sh b/tests/wpt/tests/tools/ci/epochs_update.sh
index 1c7edf15aaf..cc1a536f22e 100755
--- a/tests/wpt/tests/tools/ci/epochs_update.sh
+++ b/tests/wpt/tests/tools/ci/epochs_update.sh
@@ -43,7 +43,7 @@ main () {
     done
     # This is safe because `git push` will by default fail for a non-fast-forward
     # push, for example if the remote branch is ahead of the local branch.
-    git push --tags ${REMOTE} ${ALL_BRANCHES_NAMES}
+    git push --porcelain --tags ${REMOTE} ${ALL_BRANCHES_NAMES} | tee "${RUNNER_TEMP}/git-push-output.txt"
 }
 
 cd $WPT_ROOT
diff --git a/tests/wpt/tests/tools/ci/tests/test_check_for_updated_refs.py b/tests/wpt/tests/tools/ci/tests/test_check_for_updated_refs.py
new file mode 100644
index 00000000000..e6562c1202c
--- /dev/null
+++ b/tests/wpt/tests/tools/ci/tests/test_check_for_updated_refs.py
@@ -0,0 +1,106 @@
+# mypy: allow-untyped-defs
+
+import io
+
+from tools.ci import check_for_updated_refs
+
+
+def test_parse_push():
+    s = io.StringIO(
+        """
+To github.com:gsnedders/web-platform-tests.git
+=	refs/heads/a:refs/heads/a	[up to date]
+-	:refs/heads/b	[deleted]
++	refs/heads/c:refs/heads/c	a6eb923e19...9b6507e295 (forced update)
+*	refs/heads/d:refs/heads/d	[new branch]
+\x20	refs/heads/e:refs/heads/e	0acd8f62f1..6188942729
+!	refs/heads/f:refs/heads/f	[rejected] (atomic push failed)
+Done
+    """
+    )
+
+    actual = list(check_for_updated_refs.parse_push(s))
+    print(repr(actual))
+    expected = [
+        {
+            "flag": "=",
+            "from": "refs/heads/a",
+            "to": "refs/heads/a",
+            "summary": "[up to date]",
+            "reason": None,
+        },
+        {
+            "flag": "-",
+            "from": "",
+            "to": "refs/heads/b",
+            "summary": "[deleted]",
+            "reason": None,
+        },
+        {
+            "flag": "+",
+            "from": "refs/heads/c",
+            "to": "refs/heads/c",
+            "summary": "a6eb923e19...9b6507e295",
+            "reason": "forced update",
+        },
+        {
+            "flag": "*",
+            "from": "refs/heads/d",
+            "to": "refs/heads/d",
+            "summary": "[new branch]",
+            "reason": None,
+        },
+        {
+            "flag": " ",
+            "from": "refs/heads/e",
+            "to": "refs/heads/e",
+            "summary": "0acd8f62f1..6188942729",
+            "reason": None,
+        },
+        {
+            "flag": "!",
+            "from": "refs/heads/f",
+            "to": "refs/heads/f",
+            "summary": "[rejected]",
+            "reason": "atomic push failed",
+        },
+    ]
+
+    assert expected == actual
+
+
+def test_process_push():
+    s = io.StringIO(
+        """
+To github.com:gsnedders/web-platform-tests.git
+=	refs/heads/a:refs/heads/a	[up to date]
+-	:refs/heads/b	[deleted]
++	refs/heads/c:refs/heads/c	a6eb923e19...9b6507e295 (forced update)
+*	refs/heads/d:refs/heads/d	[new branch]
+\x20	refs/heads/e:refs/heads/e	0acd8f62f1..6188942729
+!	refs/heads/f:refs/heads/f	[rejected] (atomic push failed)
+Done
+    """
+    )
+
+    actual = list(
+        check_for_updated_refs.process_push(
+            s,
+            [
+                "refs/heads/e",
+                "refs/heads/b",
+                "refs/heads/c",
+                "refs/heads/d",
+                "refs/heads/e",
+                "refs/heads/x",
+            ],
+        )
+    )
+    expected = [
+        "refs/heads/b",
+        "refs/heads/c",
+        "refs/heads/d",
+        "refs/heads/e",
+    ]
+
+    assert expected == actual
diff --git a/tests/wpt/tests/tools/requirements_mypy.txt b/tests/wpt/tests/tools/requirements_mypy.txt
index 2b22595ad30..2367e0f03ca 100644
--- a/tests/wpt/tests/tools/requirements_mypy.txt
+++ b/tests/wpt/tests/tools/requirements_mypy.txt
@@ -4,7 +4,7 @@ toml==0.10.2
 tomli==2.0.1
 typed-ast==1.5.5
 types-atomicwrites==1.4.5.1
-types-python-dateutil==2.9.0.20240316
+types-python-dateutil==2.9.0.20240906
 types-PyYAML==6.0.12.12
 types-requests==2.32.0.20240905
 types-setuptools==69.5.0.20240423
diff --git a/tests/wpt/tests/tools/requirements_pytest.txt b/tests/wpt/tests/tools/requirements_pytest.txt
index 757cee5037f..51ec00d5eff 100644
--- a/tests/wpt/tests/tools/requirements_pytest.txt
+++ b/tests/wpt/tests/tools/requirements_pytest.txt
@@ -1,3 +1,3 @@
 pytest==8.3.2
 pytest-cov==5.0.0
-hypothesis==6.104.1
+hypothesis==6.112.0
diff --git a/tests/wpt/tests/tools/requirements_tests.txt b/tests/wpt/tests/tools/requirements_tests.txt
index 7dcf519e5aa..9bb2dceafe4 100644
--- a/tests/wpt/tests/tools/requirements_tests.txt
+++ b/tests/wpt/tests/tools/requirements_tests.txt
@@ -1,4 +1,4 @@
-httpx[http2]==0.27.0
+httpx[http2]==0.27.2
 json-e==4.7.0
 jsonschema==4.17.3
 pyyaml==6.0.1
diff --git a/tests/wpt/tests/tools/wpt/testfiles.py b/tests/wpt/tests/tools/wpt/testfiles.py
index e13b878cf2a..5f4c92b3869 100644
--- a/tests/wpt/tests/tools/wpt/testfiles.py
+++ b/tests/wpt/tests/tools/wpt/testfiles.py
@@ -147,7 +147,7 @@ def repo_files_changed(revish: Text, include_uncommitted: bool = False, include_
         # gives us that (via the merge-base)
         revish = revish.replace("..", "...")
 
-    files_list = git("diff", "--no-renames", "--name-only", "-z", revish).split("\0")
+    files_list = git("diff", "--no-renames", "--name-only", "--diff-filter=d", "-z", revish).split("\0")
     assert not files_list[-1], f"final item should be empty, got: {files_list[-1]!r}"
     files = set(files_list[:-1])
 
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/chrome_spki_certs.py b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/chrome_spki_certs.py
index 03ff0b8d564..08ff16145cc 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/chrome_spki_certs.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/chrome_spki_certs.py
@@ -2,7 +2,7 @@
 # DO NOT EDIT MANUALLY.
 
 # tools/certs/web-platform.test.pem
-WPT_FINGERPRINT = 'JHJ0/fyZrd8gSICxpYT+UEaucX78ANqd8vCAD7JiLMc='
+WPT_FINGERPRINT = 'VoVeIyoD19UQniB0BHgC6THv+UvAkHror0gVsRketZQ='
 
 # signed-exchange/resources/127.0.0.1.sxg.pem
 SXG_WPT_FINGERPRINT = '0Rt4mT6SJXojEMHTnKnlJ/hBKMBcI4kteBlhR1eTTdk='
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorchrome.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorchrome.py
index b1f1e697bbb..17ee492057e 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorchrome.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorchrome.py
@@ -108,6 +108,9 @@ class ChromeDriverTestharnessProtocolPart(WebDriverTestharnessProtocolPart):
         if not self.reuse_window:
             self.close_test_window()
         self.webdriver.window_handle = self.runner_handle
+        # TODO(web-platform-tests/wpt#48078): Find a cross-platform way to clear
+        # cookies for all domains.
+        self.parent.cdp.execute_cdp_command("Network.clearBrowserCookies")
         return self.runner_handle
 
     def open_test_window(self, window_id):
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
index 994cdc2c628..8a7adc5921e 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
@@ -625,6 +625,8 @@ class WebDriverProtocol(Protocol):
         self.webdriver.start()
 
     def teardown(self):
+        if not self.webdriver:
+            return
         self.logger.debug("Hanging up on WebDriver session")
         try:
             self.webdriver.end()
@@ -699,23 +701,29 @@ class WebDriverRun(TimedRunner):
             self.result = True, self.func(self.protocol, self.url, self.timeout)
         except (webdriver_error.TimeoutException, webdriver_error.ScriptTimeoutException):
             self.result = False, ("EXTERNAL-TIMEOUT", None)
-        except socket.timeout:
-            # Checking if the browser is alive below is likely to hang, so mark
-            # this case as a CRASH unconditionally.
-            self.result = False, ("CRASH", None)
         except Exception as e:
-            if (isinstance(e, webdriver_error.WebDriverException) and
-                    e.http_status == 408 and
-                    e.status_code == "asynchronous script timeout"):
-                # workaround for https://bugs.chromium.org/p/chromedriver/issues/detail?id=2001
-                self.result = False, ("EXTERNAL-TIMEOUT", None)
-            else:
+            status, message = None, None
+            if isinstance(e, socket.timeout):
+                # Checking if the browser is alive in this case is likely to hang,
+                # so mark it as a CRASH unconditionally.
+                status = "CRASH"
+            elif isinstance(e, webdriver_error.WebDriverException):
+                # In a multiple processes architecture, the browser process might be
+                # alive even when the renderer process has crashed.
+                # TODO(https://github.com/w3c/webdriver/issues/1308): The http
+                # status and status code below are chromium specific. Replace
+                # that with a standarded code once the issue is resolved.
+                if e.http_status == 500 and e.status_code == "disconnected":
+                    status = "CRASH"
+            if status is None:
                 status = "INTERNAL-ERROR" if self.protocol.is_alive() else "CRASH"
+
+            if status != "EXTERNAL-TIMEOUT":
                 message = str(getattr(e, "message", ""))
                 if message:
                     message += "\n"
                 message += traceback.format_exc()
-                self.result = False, (status, message)
+            self.result = False, (status, message)
         finally:
             self.result_flag.set()
 
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/testrunner.py b/tests/wpt/tests/tools/wptrunner/wptrunner/testrunner.py
index c5b12ee1d93..0d982f85772 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/testrunner.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/testrunner.py
@@ -110,7 +110,6 @@ class TestRunner:
 
     def teardown(self):
         self.executor.teardown()
-        self.send_message("runner_teardown")
         self.result_queue = None
         self.command_queue = None
         self.browser = None
@@ -140,12 +139,7 @@ class TestRunner:
     def run(self):
         """Main loop accepting commands over the pipe and triggering
         the associated methods"""
-        try:
-            self.setup()
-        except Exception:
-            self.logger.warning("An error occured during executor setup:\n%s" %
-                                traceback.format_exc())
-            raise
+        self.setup()
         commands = {"run_test": self.run_test,
                     "switch_executor": self.switch_executor,
                     "reset": self.reset,
@@ -531,9 +525,8 @@ class TestRunnerManager(threading.Thread):
             RunnerManagerState.error: {},
             RunnerManagerState.stop: {},
             None: {
-                "runner_teardown": self.runner_teardown,
                 "log": self.log,
-                "error": self.error
+                "error": self.error,
             }
         }
         try:
@@ -553,6 +546,7 @@ class TestRunnerManager(threading.Thread):
                 self.logger.debug("Debugger exited")
                 return RunnerManagerState.stop(False)
 
+            # `test_runner_proc` must be nonnull in the manager's `running` state.
             if (isinstance(self.state, RunnerManagerState.running) and
                 not self.test_runner_proc.is_alive()):
                 if not self.command_queue.empty():
@@ -956,34 +950,33 @@ class TestRunnerManager(threading.Thread):
     def stop_runner(self, force=False):
         """Stop the TestRunner and the browser binary."""
         self.recording.set(["testrunner", "stop_runner"])
-        if self.test_runner_proc is None:
-            return
-
-        if self.test_runner_proc.is_alive():
-            self.send_message("stop")
         try:
-            self.browser.stop(force=force)
-            self.ensure_runner_stopped()
+            # Stop the runner process before the browser process so that the
+            # former can gracefully tear down the protocol (e.g., closing an
+            # active WebDriver session).
+            self._ensure_runner_stopped()
+            # TODO(web-platform-tests/wpt#48030): Consider removing the
+            # `stop(force=...)` argument.
+            self.browser.stop(force=True)
         except (OSError, PermissionError):
-            self.logger.error("Failed to stop the runner")
+            self.logger.error("Failed to stop either the runner or the browser process",
+                              exc_info=True)
         finally:
             self.cleanup()
 
     def teardown(self):
         self.logger.debug("TestRunnerManager teardown")
-        self.test_runner_proc = None
         self.command_queue.close()
         self.remote_queue.close()
         self.command_queue = None
         self.remote_queue = None
         self.recording.pause()
 
-    def ensure_runner_stopped(self):
-        self.logger.debug("ensure_runner_stopped")
+    def _ensure_runner_stopped(self):
         if self.test_runner_proc is None:
             return
-
-        self.browser.stop(force=True)
+        self.logger.debug("Stopping runner process")
+        self.send_message("stop")
         self.test_runner_proc.join(10)
         mp = mpcontext.get_context()
         if self.test_runner_proc.is_alive():
@@ -1007,10 +1000,7 @@ class TestRunnerManager(threading.Thread):
             self.remote_queue = mp.Queue()
         else:
             self.logger.debug("Runner process exited with code %i" % self.test_runner_proc.exitcode)
-
-    def runner_teardown(self):
-        self.ensure_runner_stopped()
-        return RunnerManagerState.stop(False)
+        self.test_runner_proc = None
 
     def send_message(self, command, *args):
         """Send a message to the remote queue (to Executor)."""
@@ -1034,11 +1024,6 @@ class TestRunnerManager(threading.Thread):
             else:
                 if cmd == "log":
                     self.log(*data)
-                elif cmd == "runner_teardown":
-                    # It's OK for the "runner_teardown" message to be left in
-                    # the queue during cleanup, as we will already have tried
-                    # to stop the TestRunner in `stop_runner`.
-                    pass
                 else:
                     self.logger.warning(f"Command left in command_queue during cleanup: {cmd!r}, {data!r}")
         while True:
diff --git a/tests/wpt/tests/webauthn/helpers.js b/tests/wpt/tests/webauthn/helpers.js
index 5b30749bf37..a45b686ca77 100644
--- a/tests/wpt/tests/webauthn/helpers.js
+++ b/tests/wpt/tests/webauthn/helpers.js
@@ -362,7 +362,8 @@ function extendObject(dst, src) {
 function isSimpleObject(o) {
     return (typeof o === "object" &&
         !Array.isArray(o) &&
-        !(o instanceof ArrayBuffer));
+        !(o instanceof ArrayBuffer) &&
+        !(o instanceof Uint8Array));
 }
 
 function isAbortSignal(o) {
@@ -613,8 +614,9 @@ function virtualAuthenticatorPromiseTest(
     testCb, options = {}, name = 'Virtual Authenticator Test') {
   let authenticatorArgs = Object.assign(defaultAuthenticatorArgs(), options);
   promise_test(async t => {
+    let authenticator;
     try {
-      let authenticator =
+      authenticator =
           await window.test_driver.add_virtual_authenticator(authenticatorArgs);
       t.add_cleanup(
           () => window.test_driver.remove_virtual_authenticator(authenticator));
@@ -623,7 +625,7 @@ function virtualAuthenticatorPromiseTest(
         throw error;
       }
     }
-    return testCb(t);
+    return testCb(t, authenticator);
   }, name);
 }
 
diff --git a/tests/wpt/tests/webauthn/signal-all-accepted-credentials.https.html b/tests/wpt/tests/webauthn/signal-all-accepted-credentials.https.html
new file mode 100644
index 00000000000..45519b13e35
--- /dev/null
+++ b/tests/wpt/tests/webauthn/signal-all-accepted-credentials.https.html
@@ -0,0 +1,119 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Signal all accepted credentials tests</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src=helpers.js></script>
+
+<body></body>
+<script>
+  "use strict";
+
+  const authenticatorOptions = {
+    protocol: "ctap2_1",
+    hasResidentKey: true,
+    isUserVerified: true,
+    hasUserVerification: true,
+  };
+
+  const userId = Uint8Array.from([1, 2, 3, 4]);
+
+  function createDiscoverableCredential() {
+    return createCredential({
+      options: {
+        publicKey: {
+          authenticatorSelection: {
+            residentKey: "required",
+          },
+          user: {
+            id: userId,
+            name: "reimu",
+            displayName: "Reimu Hakurei",
+          }
+        },
+      },
+    });
+  }
+
+  virtualAuthenticatorPromiseTest(async t => {
+    return promise_rejects_dom(t, "SecurityError", PublicKeyCredential.signalAllAcceptedCredentials({
+      rpId: "umbrella-corporation.example.com",
+      userId: base64urlEncode(userId),
+      allAcceptedCredentialIds: [],
+    }));
+  }, authenticatorOptions, "signalAllAcceptedCredentials fails with SecurityError for invalid RP IDs");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    return promise_rejects_js(t, TypeError, PublicKeyCredential.signalAllAcceptedCredentials({
+      rpId: window.location.hostname,
+      userId: "Not base 64 url",
+      allAcceptedCredentialIds: [],
+    }));
+  }, authenticatorOptions, "signalAllAcceptedCredentials fails with TypeError for invalid userId base64url");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    return promise_rejects_js(t, TypeError, PublicKeyCredential.signalAllAcceptedCredentials({
+      rpId: window.location.hostname,
+      userId: base64urlEncode(userId),
+      allAcceptedCredentialIds: ["not base 64 url"],
+    }));
+  }, authenticatorOptions, "signalAllAcceptedCredentials fails with TypeError for invalid credential base64url");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    const credential = await createDiscoverableCredential();
+    await assertCredential(credential);
+    PublicKeyCredential.signalAllAcceptedCredentials({
+      rpId: window.location.hostname,
+      userId: base64urlEncode([5, 6, 7, 8]),
+      allAcceptedCredentialIds: [],
+    });
+    await assertCredential(credential);
+  }, authenticatorOptions, "signalAllAcceptedCredentials does not remove a credential for a different user id");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    const credential = await createDiscoverableCredential();
+    await assertCredential(credential);
+    PublicKeyCredential.signalAllAcceptedCredentials({
+      rpId: window.location.hostname,
+      userId: base64urlEncode(userId),
+      allAcceptedCredentialIds: [credential.id],
+    });
+    await assertCredential(credential);
+  }, authenticatorOptions, "signalAllAcceptedCredentials does not remove a credential if present on the list");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    const credential = await createDiscoverableCredential();
+    await assertCredential(credential);
+    PublicKeyCredential.signalAllAcceptedCredentials({
+      rpId: window.location.hostname,
+      userId: base64urlEncode(userId),
+      allAcceptedCredentialIds: [],
+    });
+    return promise_rejects_dom(t, "NotAllowedError", assertCredential(credential));
+  }, authenticatorOptions, "signalAllAcceptedCredentials removes a credential present on the list for the correct user");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    const credential = await createDiscoverableCredential();
+    await assertCredential(credential);
+    PublicKeyCredential.signalAllAcceptedCredentials({
+      rpId: window.location.hostname,
+      userId: base64urlEncode(userId),
+      allAcceptedCredentialIds: [base64urlEncode([1, 2, 3, 4])],
+    });
+    return promise_rejects_dom(t, "NotAllowedError", assertCredential(credential));
+  }, authenticatorOptions, "signalAllAcceptedCredentials with unrecognized credentials removes existing credential");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    const credential = await createDiscoverableCredential();
+    await assertCredential(credential);
+    PublicKeyCredential.signalAllAcceptedCredentials({
+      rpId: window.location.hostname,
+      userId: base64urlEncode(userId),
+      allAcceptedCredentialIds: [credential.id, base64urlEncode([1, 2, 3, 4])],
+    });
+    await assertCredential(credential);
+  }, authenticatorOptions, "signalAllAcceptedCredentials with recognized and unrecognized credentials keeps the existing credential");
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/webauthn/signal-current-user-details.https.html b/tests/wpt/tests/webauthn/signal-current-user-details.https.html
new file mode 100644
index 00000000000..b4027377272
--- /dev/null
+++ b/tests/wpt/tests/webauthn/signal-current-user-details.https.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Signal current user details tests</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src=helpers.js></script>
+
+<body></body>
+<script>
+  "use strict";
+
+  const authenticatorOptions = {
+    protocol: "ctap2_1",
+    hasResidentKey: true,
+    isUserVerified: true,
+    hasUserVerification: true,
+  };
+
+  const userId = Uint8Array.from([1, 2, 3, 4]);
+
+  function createDiscoverableCredential() {
+    return createCredential({
+      options: {
+        publicKey: {
+          authenticatorSelection: {
+            residentKey: "required",
+          },
+          user: {
+            id: userId,
+            name: "reimu",
+            displayName: "Reimu Hakurei",
+          }
+        },
+      },
+    });
+  }
+
+  virtualAuthenticatorPromiseTest(async t => {
+    return promise_rejects_dom(t, "SecurityError", PublicKeyCredential.signalCurrentUserDetails({
+      rpId: "umbrella-corporation.example.com",
+      userId: base64urlEncode(userId),
+      name: "marisa",
+      displayName: "Marisa Kirisame",
+    }));
+  }, authenticatorOptions, "signalCurrentUserDetails fails with SecurityError for invalid RP IDs");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    return promise_rejects_js(t, TypeError, PublicKeyCredential.signalCurrentUserDetails({
+      rpId: window.location.hostname,
+      userId: "not base 64 url",
+      name: "marisa",
+      displayName: "Marisa Kirisame",
+    }));
+  }, authenticatorOptions, "signalCurrentUserDetails fails with TypeError for invalid userId base64url");
+
+  virtualAuthenticatorPromiseTest(async (t, authenticator) => {
+    await createDiscoverableCredential();
+    PublicKeyCredential.signalCurrentUserDetails({
+      rpId: window.location.hostname,
+      userId: base64urlEncode([5, 6, 7, 8]),
+      name: "marisa",
+      displayName: "Marisa Kirisame",
+    });
+    const credential = (await window.test_driver.get_credentials(authenticator))[0];
+    // TODO(nsatragno): add assertions once https://github.com/w3c/webauthn/issues/2143 is resolved.
+  }, authenticatorOptions, "signalCurrentUserDetails does not update a different user id");
+
+  virtualAuthenticatorPromiseTest(async (t, authenticator) => {
+    await createDiscoverableCredential();
+    PublicKeyCredential.signalCurrentUserDetails({
+      rpId: window.location.hostname,
+      userId: base64urlEncode(userId),
+      name: "marisa",
+      displayName: "Marisa Kirisame",
+    });
+    const credential = (await window.test_driver.get_credentials(authenticator))[0];
+    // TODO(nsatragno): add assertions once https://github.com/w3c/webauthn/issues/2143 is resolved.
+  }, authenticatorOptions, "signalCurrentUserDetails updates a matching user id");
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/webauthn/signal-unknown-credential.https.html b/tests/wpt/tests/webauthn/signal-unknown-credential.https.html
new file mode 100644
index 00000000000..a01dd3e692a
--- /dev/null
+++ b/tests/wpt/tests/webauthn/signal-unknown-credential.https.html
@@ -0,0 +1,74 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Signal unknown credential tests</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src=helpers.js></script>
+
+<body></body>
+<script>
+  "use strict";
+
+  const authenticatorOptions = {
+    protocol: "ctap2_1",
+    hasResidentKey: true,
+    isUserVerified: true,
+    hasUserVerification: true,
+  };
+
+  const userId = Uint8Array.from([1, 2, 3, 4]);
+
+  function createDiscoverableCredential() {
+    return createCredential({
+      options: {
+        publicKey: {
+          authenticatorSelection: {
+            residentKey: "required",
+          },
+          user: {
+            id: userId,
+            name: "reimu",
+            displayName: "Reimu Hakurei",
+          }
+        },
+      },
+    });
+  }
+
+  virtualAuthenticatorPromiseTest(async t => {
+    return promise_rejects_dom(t, "SecurityError", PublicKeyCredential.signalUnknownCredential({
+      rpId: "umbrella-corporation.example.com",
+      credentialId: base64urlEncode([1, 2, 3, 4]),
+    }));
+  }, authenticatorOptions, "signalUnknownCredential fails with SecurityError for invalid RP IDs");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    return promise_rejects_js(t, TypeError, PublicKeyCredential.signalUnknownCredential({
+      rpId: window.location.hostname,
+      credentialId: "Not base 64 url",
+    }));
+  }, authenticatorOptions, "signalUnknownCredential fails with TypeError for invalid base64url");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    const credential = await createDiscoverableCredential();
+    await assertCredential(credential);
+    await PublicKeyCredential.signalUnknownCredential({
+      rpId: window.location.hostname,
+      credentialId: base64urlEncode([1, 2, 3, 4]),
+    });
+    await assertCredential(credential);
+  }, authenticatorOptions, "signalUnknownCredential does not remove a credential that does not match the ID");
+
+  virtualAuthenticatorPromiseTest(async t => {
+    const credential = await createDiscoverableCredential();
+    await assertCredential(credential);
+    await PublicKeyCredential.signalUnknownCredential({
+      rpId: window.location.hostname,
+      credentialId: credential.id,
+    });
+    return promise_rejects_dom(t, "NotAllowedError", assertCredential(credential));
+  }, authenticatorOptions, "signalUnknownCredential removes a credential that matches the ID");
+</script>
\ No newline at end of file
diff --git a/tests/wpt/tests/webcodecs/audio-data.any.js b/tests/wpt/tests/webcodecs/audio-data.any.js
index 67fef3c83c8..c18606e2b70 100644
--- a/tests/wpt/tests/webcodecs/audio-data.any.js
+++ b/tests/wpt/tests/webcodecs/audio-data.any.js
@@ -129,6 +129,20 @@ test(t => {
   data.close();
 }, 'Test we can construct AudioData with a negative timestamp.');
 
+test(t => {
+  var data = new Float32Array([0]);
+  let audio_data_init = {
+    timestamp: 0,
+    data: data,
+    numberOfFrames: 1,
+    numberOfChannels: 1,
+    sampleRate: 44100,
+    format: 'f32',
+  };
+  let audioData = new AudioData(audio_data_init);
+  assert_not_equals(data.length, 0, "Input data is copied when constructing an AudioData");
+}, 'Test input array is copied on construction');
+
 test(t => {
   let audio_data_init = {
     timestamp: 0,
diff --git a/tests/wpt/tests/webcodecs/audio-decoder.https.any.js b/tests/wpt/tests/webcodecs/audio-decoder.https.any.js
index 98ed49897d3..fd828d48157 100644
--- a/tests/wpt/tests/webcodecs/audio-decoder.https.any.js
+++ b/tests/wpt/tests/webcodecs/audio-decoder.https.any.js
@@ -53,6 +53,14 @@ const invalidConfigs = [
       numberOfChannels: 0,
     },
   },
+  {
+    comment: 'Opus with >2 channels but no description',
+    config: {
+      codec: 'opus',
+      sampleRate: 48000,
+      numberOfChannels: 6,
+    }
+  },
   {
     comment: 'Valid configuration except detached description',
     config: {
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_started/navigation_started.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_started/navigation_started.py
index bc711814d3a..24fcb48d29a 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_started/navigation_started.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_started/navigation_started.py
@@ -213,22 +213,6 @@ async def test_nested_iframes(
     remove_listener()
 
 
-@pytest.mark.parametrize("type_hint", ["tab", "window"])
-async def test_new_context(bidi_session, subscribe_events, wait_for_event, wait_for_future_safe, type_hint):
-    await subscribe_events(events=[NAVIGATION_STARTED_EVENT])
-
-    on_entry = wait_for_event(NAVIGATION_STARTED_EVENT)
-    top_level_context = await bidi_session.browsing_context.create(type_hint="tab")
-    navigation_info = await wait_for_future_safe(on_entry)
-    assert_navigation_info(
-        navigation_info,
-        {
-            "context": top_level_context["context"],
-            "url": "about:blank",
-        },
-    )
-
-
 async def test_same_document_navigation(bidi_session, new_tab, url, subscribe_events):
     await bidi_session.browsing_context.navigate(
         context=new_tab["context"], url=url(PAGE_EMPTY), wait="complete"
@@ -253,31 +237,6 @@ async def test_same_document_navigation(bidi_session, new_tab, url, subscribe_ev
     remove_listener()
 
 
-async def test_window_open(bidi_session, subscribe_events, wait_for_event, wait_for_future_safe, top_context):
-    await subscribe_events(events=[NAVIGATION_STARTED_EVENT])
-
-    on_entry = wait_for_event(NAVIGATION_STARTED_EVENT)
-
-    await bidi_session.script.evaluate(
-        expression="""window.open('about:blank');""",
-        target=ContextTarget(top_context["context"]),
-        await_promise=False,
-    )
-
-    navigation_info = await wait_for_future_safe(on_entry)
-    assert_navigation_info(
-        navigation_info,
-        {
-            "url": "about:blank",
-        },
-    )
-    assert navigation_info["navigation"] is not None
-
-    # Retrieve all contexts to get the context for the new window.
-    contexts = await bidi_session.browsing_context.get_tree()
-    assert navigation_info["context"] == contexts[-1]["context"]
-
-
 async def test_document_write(bidi_session, subscribe_events, top_context):
     await subscribe_events(events=[NAVIGATION_STARTED_EVENT])
 
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_started/navigation_started_initial_navigation_tentative.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_started/navigation_started_initial_navigation_tentative.py
new file mode 100644
index 00000000000..87b18a8b909
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigation_started/navigation_started_initial_navigation_tentative.py
@@ -0,0 +1,55 @@
+import pytest
+
+from webdriver.bidi.modules.script import ContextTarget
+
+from .. import assert_navigation_info
+
+pytestmark = pytest.mark.asyncio
+
+NAVIGATION_STARTED_EVENT = "browsingContext.navigationStarted"
+
+
+# Tentative: https://github.com/web-platform-tests/wpt/issues/47942
+
+@pytest.mark.parametrize("type_hint", ["tab", "window"])
+async def test_new_context(bidi_session, subscribe_events, wait_for_event,
+      wait_for_future_safe, type_hint):
+    await subscribe_events(events=[NAVIGATION_STARTED_EVENT])
+
+    on_entry = wait_for_event(NAVIGATION_STARTED_EVENT)
+    top_level_context = await bidi_session.browsing_context.create(
+        type_hint="tab")
+    navigation_info = await wait_for_future_safe(on_entry)
+    assert_navigation_info(
+        navigation_info,
+        {
+            "context": top_level_context["context"],
+            "url": "about:blank",
+        },
+    )
+
+
+async def test_window_open(bidi_session, subscribe_events, wait_for_event,
+      wait_for_future_safe, top_context):
+    await subscribe_events(events=[NAVIGATION_STARTED_EVENT])
+
+    on_entry = wait_for_event(NAVIGATION_STARTED_EVENT)
+
+    await bidi_session.script.evaluate(
+        expression="""window.open('about:blank');""",
+        target=ContextTarget(top_context["context"]),
+        await_promise=False,
+    )
+
+    navigation_info = await wait_for_future_safe(on_entry)
+    assert_navigation_info(
+        navigation_info,
+        {
+            "url": "about:blank",
+        },
+    )
+    assert navigation_info["navigation"] is not None
+
+    # Retrieve all contexts to get the context for the new window.
+    contexts = await bidi_session.browsing_context.get_tree()
+    assert navigation_info["context"] == contexts[-1]["context"]
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/__init__.py b/tests/wpt/tests/webdriver/tests/bidi/network/__init__.py
index c06cdaa79fb..41ddbbbff09 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/network/__init__.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/__init__.py
@@ -8,6 +8,7 @@ from .. import (
     any_string,
     any_string_or_null,
     assert_cookies,
+    int_interval,
     recursive_compare,
 )
 
@@ -357,6 +358,13 @@ PHASE_TO_EVENT_MAP = {
 
 expires_a_day_from_now = datetime.now(timezone.utc) + timedelta(days=1)
 expires_a_day_from_now_timestamp = int(expires_a_day_from_now.timestamp())
+# Bug 1916221, the parsed expiry can have a slightly different value than the
+# computed timestamp as Firefox tries to accommodate for the difference between
+# the server clock and the system clock.
+expires_interval = int_interval(
+    expires_a_day_from_now_timestamp - 1,
+    expires_a_day_from_now_timestamp + 1,
+)
 
 # Common parameters for Set-Cookie headers tests used for network interception
 # commands.
@@ -484,7 +492,7 @@ SET_COOKIE_TEST_PARAMETERS = [
         ),
         None,
         {
-            "expiry": expires_a_day_from_now_timestamp,
+            "expiry": expires_interval,
             "httpOnly": False,
             "name": "foo",
             "path": "/",
diff --git a/tests/wpt/tests/webdriver/tests/bidi/network/continue_response/cookies.py b/tests/wpt/tests/webdriver/tests/bidi/network/continue_response/cookies.py
index e77bf83cde1..d9280067a0f 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/network/continue_response/cookies.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/network/continue_response/cookies.py
@@ -98,7 +98,7 @@ async def test_cookie_response_started(
     SET_COOKIE_TEST_PARAMETERS,
     ids=SET_COOKIE_TEST_IDS,
 )
-async def test_cookie_attributes_before_request_sent(
+async def test_cookie_attributes_response_started(
     setup_blocked_request,
     subscribe_events,
     bidi_session,
diff --git a/tests/wpt/tests/webnn/conformance_tests/byob_readbuffer.https.any.js b/tests/wpt/tests/webnn/conformance_tests/byob_readtensor.https.any.js
similarity index 66%
rename from tests/wpt/tests/webnn/conformance_tests/byob_readbuffer.https.any.js
rename to tests/wpt/tests/webnn/conformance_tests/byob_readtensor.https.any.js
index d0d721a8c0e..9a12bf02439 100644
--- a/tests/wpt/tests/webnn/conformance_tests/byob_readbuffer.https.any.js
+++ b/tests/wpt/tests/webnn/conformance_tests/byob_readtensor.https.any.js
@@ -1,4 +1,4 @@
-// META: title=test WebNN API buffer operations
+// META: title=test WebNN API tensor operations
 // META: global=window,dedicatedworker
 // META: variant=?cpu
 // META: variant=?gpu
@@ -14,12 +14,12 @@ promise_setup(async () => {
   assert_implements(navigator.ml, 'missing navigator.ml');
 });
 
-// https://www.w3.org/TR/webnn/#api-mlbuffer
+// https://www.w3.org/TR/webnn/#api-mltensor
 
 const testContents = Uint32Array.from([0, 1, 2, 3, 4, 5, 6, 7]);
 
 let mlContext;
-let mlBuffer;
+let mlTensor;
 promise_setup(async () => {
   try {
     mlContext = await navigator.ml.createContext(contextOptions);
@@ -29,32 +29,32 @@ promise_setup(async () => {
   }
 
   try {
-    mlBuffer = await mlContext.createBuffer({
+    mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [2, 4],
-      usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
     });
   } catch (e) {
     throw new AssertionError(
-        `Unable to create buffer for ${variant} variant. ${e}`);
+        `Unable to create tensor for ${variant} variant. ${e}`);
   }
 
-  mlContext.writeBuffer(mlBuffer, testContents);
+  mlContext.writeTensor(mlTensor, testContents);
 });
 
 promise_test(async (t) => {
   const arrayBuffer = new ArrayBuffer(testContents.byteLength - 4);
 
   await promise_rejects_js(
-      t, TypeError, mlContext.readBuffer(mlBuffer, arrayBuffer));
-}, `readBuffer() with an ArrayBuffer that is too small should reject`);
+      t, TypeError, mlContext.readTensor(mlTensor, arrayBuffer));
+}, `readTensor() with an ArrayBuffer that is too small should reject`);
 
 promise_test(async (t) => {
   const typedArray = new Uint32Array(testContents.length - 1);
 
   await promise_rejects_js(
-      t, TypeError, mlContext.readBuffer(mlBuffer, typedArray));
-}, `readBuffer() with a TypedArray that is too small should reject`);
+      t, TypeError, mlContext.readTensor(mlTensor, typedArray));
+}, `readTensor() with a TypedArray that is too small should reject`);
 
 promise_test(async (t) => {
   const arrayBuffer = new ArrayBuffer(testContents.byteLength);
@@ -63,11 +63,11 @@ promise_test(async (t) => {
   arrayBuffer.transfer();
 
   await promise_rejects_js(
-      t, TypeError, mlContext.readBuffer(mlBuffer, arrayBuffer));
+      t, TypeError, mlContext.readTensor(mlTensor, arrayBuffer));
 
   await promise_rejects_js(
-      t, TypeError, mlContext.readBuffer(mlBuffer, typedArray));
-}, `readBuffer() with a detached ArrayBuffer should reject`);
+      t, TypeError, mlContext.readTensor(mlTensor, typedArray));
+}, `readTensor() with a detached ArrayBuffer should reject`);
 
 promise_test(async (t) => {
   const arrayBuffer = new ArrayBuffer(testContents.byteLength);
@@ -75,23 +75,23 @@ promise_test(async (t) => {
 
   const checks = Promise.all([
     promise_rejects_js(
-        t, TypeError, mlContext.readBuffer(mlBuffer, arrayBuffer)),
+        t, TypeError, mlContext.readTensor(mlTensor, arrayBuffer)),
     promise_rejects_js(
-        t, TypeError, mlContext.readBuffer(mlBuffer, typedArray)),
+        t, TypeError, mlContext.readTensor(mlTensor, typedArray)),
   ]);
 
   arrayBuffer.transfer();
 
   await checks;
-}, `Detaching an ArrayBuffer while readBuffer() is in progress should reject`);
+}, `Detaching an ArrayBuffer while readTensor() is in progress should reject`);
 
 promise_test(async () => {
   const arrayBuffer = new ArrayBuffer(testContents.byteLength);
 
-  await mlContext.readBuffer(mlBuffer, arrayBuffer);
+  await mlContext.readTensor(mlTensor, arrayBuffer);
 
   assert_array_equals(new Uint32Array(arrayBuffer), testContents);
-}, `readBuffer() with an ArrayBuffer`);
+}, `readTensor() with an ArrayBuffer`);
 
 promise_test(async () => {
   // Create a slightly larger ArrayBuffer and set up the TypedArray at an
@@ -100,15 +100,15 @@ promise_test(async () => {
   const arrayBuffer = new ArrayBuffer(testContents.byteLength + 4);
   const typedArray = new Uint32Array(arrayBuffer, 4);
 
-  await mlContext.readBuffer(mlBuffer, typedArray);
+  await mlContext.readTensor(mlTensor, typedArray);
 
   assert_array_equals(typedArray, testContents);
-}, `readBuffer() with a TypedArray`);
+}, `readTensor() with a TypedArray`);
 
 promise_test(async () => {
   const arrayBuffer = new ArrayBuffer(testContents.byteLength * 2);
 
-  await mlContext.readBuffer(mlBuffer, arrayBuffer);
+  await mlContext.readTensor(mlTensor, arrayBuffer);
 
   assert_array_equals(
       new Uint32Array(arrayBuffer).subarray(0, testContents.length),
@@ -118,7 +118,7 @@ promise_test(async () => {
       new Uint32Array(arrayBuffer)
           .subarray(testContents.length, testContents.length * 2),
       new Uint32Array(testContents.length));
-}, `readBuffer() with a larger ArrayBuffer`);
+}, `readTensor() with a larger ArrayBuffer`);
 
 promise_test(async () => {
   // Create a slightly larger ArrayBuffer and set up the TypedArray at an
@@ -127,7 +127,7 @@ promise_test(async () => {
   const arrayBuffer = new ArrayBuffer(testContents.byteLength * 2 + 4);
   const typedArray = new Uint32Array(arrayBuffer, 4);
 
-  await mlContext.readBuffer(mlBuffer, typedArray);
+  await mlContext.readTensor(mlTensor, typedArray);
 
   assert_array_equals(
       typedArray.subarray(0, testContents.length), testContents);
@@ -135,43 +135,43 @@ promise_test(async () => {
   assert_array_equals(
       typedArray.subarray(testContents.length, testContents.length * 2),
       new Uint32Array(testContents.length));
-}, `readBuffer() with a larger TypedArray`);
+}, `readTensor() with a larger TypedArray`);
 
 promise_test(async (t) => {
-  const buffer = await mlContext.createBuffer({
+  const tensor = await mlContext.createTensor({
     dataType: 'int32',
     dimensions: [2, 2],
-    usage: MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.READ,
   });
   const arrayBufferView = new Int32Array(2 * 2);
   const arrayBuffer = arrayBufferView.buffer;
 
   // Reading a destroyed MLTensor should reject.
-  buffer.destroy();
+  tensor.destroy();
 
   await promise_rejects_dom(
-      t, 'InvalidStateError', mlContext.readBuffer(buffer, arrayBuffer));
+      t, 'InvalidStateError', mlContext.readTensor(tensor, arrayBuffer));
   await promise_rejects_dom(
-      t, 'InvalidStateError', mlContext.readBuffer(buffer, arrayBufferView));
-}, `readBuffer() rejects on a destroyed MLTensor`);
+      t, 'InvalidStateError', mlContext.readTensor(tensor, arrayBufferView));
+}, `readTensor() rejects on a destroyed MLTensor`);
 
 promise_test(async (t) => {
-  const buffer = await mlContext.createBuffer({
+  const tensor = await mlContext.createTensor({
     dataType: 'int32',
     dimensions: [2, 2],
-    usage: MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.READ,
   });
   const arrayBufferView = new Int32Array(2 * 2);
   const arrayBuffer = arrayBufferView.buffer;
 
   const checks = Promise.all([
     promise_rejects_dom(
-        t, 'InvalidStateError', mlContext.readBuffer(buffer, arrayBuffer)),
+        t, 'InvalidStateError', mlContext.readTensor(tensor, arrayBuffer)),
     promise_rejects_dom(
-        t, 'InvalidStateError', mlContext.readBuffer(buffer, arrayBufferView)),
+        t, 'InvalidStateError', mlContext.readTensor(tensor, arrayBufferView)),
   ]);
 
-  buffer.destroy();
+  tensor.destroy();
 
   await checks;
-}, `readBuffer() rejects when the MLTensor is destroyed`);
+}, `readTensor() rejects when the MLTensor is destroyed`);
diff --git a/tests/wpt/tests/webnn/conformance_tests/dequantizeLinear.https.any.js b/tests/wpt/tests/webnn/conformance_tests/dequantizeLinear.https.any.js
new file mode 100644
index 00000000000..2939121c241
--- /dev/null
+++ b/tests/wpt/tests/webnn/conformance_tests/dequantizeLinear.https.any.js
@@ -0,0 +1,160 @@
+// META: title=test WebNN API dequantizeLinear operation
+// META: global=window,dedicatedworker
+// META: variant=?cpu
+// META: variant=?gpu
+// META: variant=?npu
+// META: script=../resources/utils.js
+// META: timeout=long
+
+'use strict';
+
+// Calculate a low precision integer operand
+// (typically uint8 with a zero-point bias) to floating point:
+//   output = (input - zeroPoint) * scale.
+//
+// MLOperand dequantizeLinear(
+//     MLOperand input, MLOperand scale, MLOperand zeroPoint,
+//     optional MLOperatorOptions options = {});
+
+
+const getDequantizeLinearPrecisionTolerance = (graphResources) => {
+  const toleranceValueDict = {float32: 1};
+  const expectedDataType =
+      getExpectedDataTypeOfSingleOutput(graphResources.expectedOutputs);
+  return {metricType: 'ULP', value: toleranceValueDict[expectedDataType]};
+};
+
+const dequantizeLinearTests = [
+  {
+    'name': 'dequantizeLinear int8 0D tensor with float32 scalar scale',
+    'graph': {
+      'inputs': {
+        'dequantizeLinearInput': {
+          'data': [123],
+          'descriptor': {'dimensions': [], 'dataType': 'int8'},
+          'constant': true
+        },
+        'dequantizeLinearScale': {
+          'data': [1.1202747821807861],
+          'descriptor': {'dimensions': [], 'dataType': 'float32'},
+          'constant': true
+        },
+        'dequantizeLinearZeroPoint': {
+          'data': [3],
+          'descriptor': {'dimensions': [], 'dataType': 'int8'},
+          'constant': true
+        }
+      },
+      'operators': [{
+        'name': 'dequantizeLinear',
+        'arguments': [
+          {'input': 'dequantizeLinearInput'},
+          {'scale': 'dequantizeLinearScale'},
+          {'zeroPoint': 'dequantizeLinearZeroPoint'}
+        ],
+        'outputs': 'dequantizeLinearOutput'
+      }],
+      'expectedOutputs': {
+        'dequantizeLinearOutput': {
+          'data': [134.43296813964844],
+          'descriptor': {'dimensions': [], 'dataType': 'float32'}
+        }
+      }
+    }
+  },
+  {
+    'name': 'dequantizeLinear uint8 1D constant tensor broadcasting zeroPoint',
+    'graph': {
+      'inputs': {
+        'dequantizeLinearInput': {
+          'data': [12, 24, 35, 123],
+          'descriptor': {'dimensions': [4], 'dataType': 'uint8'},
+          'constant': true
+        },
+        'dequantizeLinearScale': {
+          'data': [
+            9.343092918395996,
+            0.2800687253475189,
+            -4.617084980010986,
+            1.1202747821807861,
+          ],
+          'descriptor': {'dimensions': [4], 'dataType': 'float32'},
+          'constant': true
+        },
+        'dequantizeLinearZeroPoint': {
+          'data': [128],
+          'descriptor': {'dimensions': [], 'dataType': 'uint8'},
+          'constant': true
+        }
+      },
+      'operators': [{
+        'name': 'dequantizeLinear',
+        'arguments': [
+          {'input': 'dequantizeLinearInput'},
+          {'scale': 'dequantizeLinearScale'},
+          {'zeroPoint': 'dequantizeLinearZeroPoint'}
+        ],
+        'outputs': 'dequantizeLinearOutput'
+      }],
+      'expectedOutputs': {
+        'dequantizeLinearOutput': {
+          'data': [
+            -1083.798828125, -29.127147674560547, 429.388916015625,
+            -5.601373672485352
+          ],
+          'descriptor': {'dimensions': [4], 'dataType': 'float32'}
+        }
+      }
+    }
+  },
+  {
+    'name':
+        'dequantizeLinear int8 4D constant tensor broadcasting scale and zeroPoint',
+    'graph': {
+      'inputs': {
+        'dequantizeLinearInput': {
+          'data': [-124, 0, 23, 122],
+          'descriptor': {'dimensions': [1, 1, 2, 2], 'dataType': 'int8'},
+          'constant': true
+        },
+        'dequantizeLinearScale': {
+          'data': [0.2800687253475189, -4.617084980010986],
+          'descriptor': {'dimensions': [2, 1], 'dataType': 'float32'},
+          'constant': true
+        },
+        'dequantizeLinearZeroPoint': {
+          'data': [12],
+          'descriptor': {'dimensions': [], 'dataType': 'int8'},
+          'constant': true
+        }
+      },
+      'operators': [{
+        'name': 'dequantizeLinear',
+        'arguments': [
+          {'input': 'dequantizeLinearInput'},
+          {'scale': 'dequantizeLinearScale'},
+          {'zeroPoint': 'dequantizeLinearZeroPoint'}
+        ],
+        'outputs': 'dequantizeLinearOutput'
+      }],
+      'expectedOutputs': {
+        'dequantizeLinearOutput': {
+          'data': [
+            -38.08934783935547, -3.3608245849609375, -50.787933349609375,
+            -507.87933349609375
+          ],
+          'descriptor': {'dimensions': [1, 1, 2, 2], 'dataType': 'float32'}
+        }
+      }
+    }
+  }
+];
+
+if (navigator.ml) {
+  dequantizeLinearTests.forEach((test) => {
+    webnn_conformance_test(
+        buildGraphAndCompute, getDequantizeLinearPrecisionTolerance, test);
+  });
+} else {
+  test(() => assert_implements(navigator.ml, 'missing navigator.ml'));
+}
diff --git a/tests/wpt/tests/webnn/conformance_tests/inputs-are-not-modified.https.any.js b/tests/wpt/tests/webnn/conformance_tests/inputs-are-not-modified.https.any.js
new file mode 100644
index 00000000000..f3a1d14fd53
--- /dev/null
+++ b/tests/wpt/tests/webnn/conformance_tests/inputs-are-not-modified.https.any.js
@@ -0,0 +1,86 @@
+// META: title=test that input tensors are not modified during a call to dispatch()
+// META: global=window,dedicatedworker
+// META: variant=?cpu
+// META: variant=?gpu
+// META: variant=?npu
+// META: script=../resources/utils.js
+// META: timeout=long
+
+'use strict';
+
+// https://www.w3.org/TR/webnn/#api-mlcontext-dispatch
+
+let mlContext;
+
+// Skip tests if WebNN is unimplemented.
+promise_setup(async () => {
+  assert_implements(navigator.ml, 'missing navigator.ml');
+  mlContext = await navigator.ml.createContext(contextOptions);
+});
+
+promise_test(async () => {
+  const builder = new MLGraphBuilder(mlContext);
+  const inputOperand =
+      builder.input('input', {dataType: 'float32', dimensions: [4]});
+  const hardSwishOperand = builder.hardSwish(inputOperand);
+  // Add some other operator for the output tensor to bind to; otherwise there
+  // is no reason to implement hardSwish "in-place".
+  const outputOperand = builder.identity(hardSwishOperand);
+
+  const [inputTensor, outputTensor, mlGraph] = await Promise.all([
+    mlContext.createTensor({
+      dataType: 'float32',
+      dimensions: [4],
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ
+    }),
+    mlContext.createTensor(
+        {dataType: 'float32', dimensions: [4], usage: MLTensorUsage.READ}),
+    builder.build({'output': outputOperand})
+  ]);
+
+  const inputData = Float32Array.from([-4, -1, 1, 4]);
+  mlContext.writeTensor(inputTensor, inputData);
+
+  mlContext.dispatch(mlGraph, {'input': inputTensor}, {'output': outputTensor});
+
+  // Wait for graph execution to complete.
+  await mlContext.readTensor(outputTensor);
+
+  // The input tensor should not be modified.
+  assert_array_equals(
+      new Float32Array(await mlContext.readTensor(inputTensor)), inputData);
+}, 'input tensor is not modified: hardSwish');
+
+promise_test(async () => {
+  const builder = new MLGraphBuilder(mlContext);
+  const inputOperand =
+      builder.input('input', {dataType: 'float32', dimensions: [4]});
+  const constantOperand = builder.constant(
+      {dataType: 'float32', dimensions: [4]}, Float32Array.from([-2, 0, 3, 4]));
+  const mulOperand = builder.mul(inputOperand, constantOperand);
+  // Add some other operator for the output tensor to bind to; otherwise there
+  // is no reason to implement mul "in-place".
+  const outputOperand = builder.add(mulOperand, constantOperand);
+
+  const [inputTensor, outputTensor, mlGraph] = await Promise.all([
+    mlContext.createTensor({
+      dataType: 'float32',
+      dimensions: [4],
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ
+    }),
+    mlContext.createTensor(
+        {dataType: 'float32', dimensions: [4], usage: MLTensorUsage.READ}),
+    builder.build({'output': outputOperand})
+  ]);
+
+  const inputData = Float32Array.from([1, 2, 3, 4]);
+  mlContext.writeTensor(inputTensor, inputData);
+  mlContext.dispatch(mlGraph, {'input': inputTensor}, {'output': outputTensor});
+
+  // Wait for graph execution to complete.
+  await mlContext.readTensor(outputTensor);
+
+  // The input tensor should not be modified.
+  assert_array_equals(
+      new Float32Array(await mlContext.readTensor(inputTensor)), inputData);
+}, 'input tensor is not modified: mul');
diff --git a/tests/wpt/tests/webnn/conformance_tests/matmul.https.any.js b/tests/wpt/tests/webnn/conformance_tests/matmul.https.any.js
index 58410a60463..888e511dfdb 100644
--- a/tests/wpt/tests/webnn/conformance_tests/matmul.https.any.js
+++ b/tests/wpt/tests/webnn/conformance_tests/matmul.https.any.js
@@ -425,7 +425,8 @@ const matmulTests = [
     }
   },
   {
-    'name': 'matmul float32 5D and 5D tensors',
+    'name':
+        'matmul float32 5D and 5D tensors, broadcast the two leftmost dimensions of inputB',
     'graph': {
       'inputs': {
         'inputA': {
@@ -496,6 +497,86 @@ const matmulTests = [
       }
     }
   },
+  {
+    'name':
+        'matmul float32 5D and 5D tensors, broadcast the leftmost dimensions of inputB',
+    'graph': {
+      'inputs': {
+        'inputA': {
+          'data': [
+            33.75957107543945,  97.24552917480469,  83.7085189819336,
+            64.53984069824219,  29.57938003540039,  17.19923973083496,
+            67.94749450683594,  97.45838165283203,  54.449283599853516,
+            29.552200317382812, 51.99970245361328,  36.03101348876953,
+            9.701058387756348,  27.04842185974121,  6.020919322967529,
+            22.940902709960938, 53.1243896484375,   15.292234420776367,
+            48.21302795410156,  87.40799713134766,  51.34442138671875,
+            21.1557559967041,   27.589487075805664, 58.412384033203125,
+            5.963276386260986,  84.74938201904297,  55.45738220214844,
+            50.858699798583984, 23.763574600219727, 62.330928802490234,
+            35.774959564208984, 17.340242385864258, 29.16901397705078,
+            23.191360473632812, 27.060928344726562, 1.2828527688980103,
+            8.720425605773926,  48.45281219482422,  99.0130386352539,
+            65.86412048339844,  92.69683074951172,  85.43540954589844,
+            37.49127960205078,  51.397132873535156, 53.19015121459961,
+            38.33119201660156,  75.20586395263672,  3.8537938594818115
+          ],
+          'descriptor': {'dimensions': [2, 2, 1, 3, 4], 'dataType': 'float32'}
+        },
+        'inputB': {
+          'data': [
+            88.1700439453125,   78.4012680053711,   14.819003105163574,
+            3.6923038959503174, 45.906429290771484, 43.083919525146484,
+            47.199466705322266, 60.92521667480469,  8.162760734558105,
+            20.333263397216797, 20.438398361206055, 27.0194091796875,
+            15.601424217224121, 87.46969604492188,  65.79554748535156,
+            69.31697082519531,  31.984439849853516, 12.291812896728516,
+            13.304834365844727, 85.26705169677734,  88.1700439453125,
+            78.4012680053711,   14.819003105163574, 3.6923038959503174,
+            45.906429290771484, 43.083919525146484, 47.199466705322266,
+            60.92521667480469,  8.162760734558105,  20.333263397216797,
+            20.438398361206055, 27.0194091796875,   15.601424217224121,
+            87.46969604492188,  65.79554748535156,  69.31697082519531,
+            31.984439849853516, 12.291812896728516, 13.304834365844727,
+            85.26705169677734
+          ],
+          'descriptor': {'dimensions': [1, 2, 1, 4, 5], 'dataType': 'float32'}
+        }
+      },
+      'operators': [{
+        'name': 'matmul',
+        'arguments': [{'a': 'inputA'}, {'b': 'inputB'}],
+        'outputs': 'output'
+      }],
+      'expectedOutputs': {
+        'output': {
+          'data': [
+            13350.8759765625,  11562.755859375,   8524.271484375,
+            9099.0927734375,   14537.8701171875,  11493.283203125,
+            8083.90869140625,  3744.22216796875,  7489.62353515625,
+            14488.2314453125,  9634.3720703125,   8221.173828125,
+            3861.51416015625,  5470.0556640625,   9594.072265625,
+            3733.946533203125, 2933.679931640625, 2167.611083984375,
+            1088.48193359375,  3347.576416015625, 12387.083984375,
+            8985.1884765625,   3545.52783203125,  5701.10595703125,
+            13374.9169921875,  10051.3671875,     7637.7470703125,
+            3198.221435546875, 3552.6796875,      9583.1220703125,
+            8835.94921875,     7592.7666015625,   6742.10400390625,
+            6241.31396484375,  9982.404296875,    6713.85205078125,
+            6326.3173828125,   4920.9609375,      3956.46875,
+            6190.67626953125,  4213.013671875,    4153.708984375,
+            2283.152099609375, 2681.085693359375, 3700.47509765625,
+            9445.5869140625,   7752.5400390625,   5435.56005859375,
+            9964.6591796875,   13516.18359375,    16182.931640625,
+            13956.9560546875,  7795.52685546875,  5002.8349609375,
+            12841.802734375,   8145.45654296875,  8134.66650390625,
+            4344.25,           7138.79052734375,  8497.98046875
+          ],
+          'descriptor': {'dimensions': [2, 2, 1, 3, 5], 'dataType': 'float32'}
+        }
+      }
+    }
+  },
   {
     'name': 'matmul float32 5D and 2D tensors',
     'graph': {
diff --git a/tests/wpt/tests/webnn/conformance_tests/parallel-dispatch.https.any.js b/tests/wpt/tests/webnn/conformance_tests/parallel-dispatch.https.any.js
index 11ff41a5dc1..5594d845d9b 100644
--- a/tests/wpt/tests/webnn/conformance_tests/parallel-dispatch.https.any.js
+++ b/tests/wpt/tests/webnn/conformance_tests/parallel-dispatch.https.any.js
@@ -33,64 +33,64 @@ promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
 
-  const [mlGraph, inputBuffer1, inputBuffer2, outputBuffer] =
+  const [mlGraph, inputTensor1, inputTensor2, outputTensor] =
       await Promise.all([
         buildMulGraph(mlContext, operandDescriptor, 2),
-        mlContext.createBuffer(operandDescriptor),
-        mlContext.createBuffer(operandDescriptor),
-        mlContext.createBuffer(operandDescriptor)
+        mlContext.createTensor(operandDescriptor),
+        mlContext.createTensor(operandDescriptor),
+        mlContext.createTensor(operandDescriptor)
       ]);
 
-  mlContext.writeBuffer(inputBuffer1, Float32Array.from([1]));
-  mlContext.writeBuffer(inputBuffer2, Float32Array.from([10]));
+  mlContext.writeTensor(inputTensor1, Float32Array.from([1]));
+  mlContext.writeTensor(inputTensor2, Float32Array.from([10]));
 
-  let readBufferPromises = [];
+  let readTensorPromises = [];
 
   mlContext.dispatch(
-      mlGraph, {'input': inputBuffer1}, {'output': outputBuffer});
+      mlGraph, {'input': inputTensor1}, {'output': outputTensor});
 
-  // Don't await buffer readback before dispatching again.
-  readBufferPromises.push(mlContext.readBuffer(outputBuffer));
+  // Don't await tensor readback before dispatching again.
+  readTensorPromises.push(mlContext.readTensor(outputTensor));
 
   mlContext.dispatch(
-      mlGraph, {'input': inputBuffer2}, {'output': outputBuffer});
+      mlGraph, {'input': inputTensor2}, {'output': outputTensor});
 
-  readBufferPromises.push(mlContext.readBuffer(outputBuffer));
+  readTensorPromises.push(mlContext.readTensor(outputTensor));
 
   const actualOutputs =
-      await Promise.all(readBufferPromises.map(async (promise) => {
+      await Promise.all(readTensorPromises.map(async (promise) => {
         const output = await promise;
         return new Float32Array(output)[0];
       }));
 
   assert_array_equals(actualOutputs, [2, 20]);
-}, 'dispatch queues behind readBuffer');
+}, 'dispatch queues behind readTensor');
 
 promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
   const mlGraph = await buildMulGraph(mlContext, operandDescriptor, 3);
 
   // write/dispatch/read, write/dispatch/read, ...
   const testInputs = [1, 2, 3, 4];
   const actualOutputs = await Promise.all(testInputs.map(async (input) => {
-    const [inputBuffer, outputBuffer] = await Promise.all([
-      mlContext.createBuffer(operandDescriptor),
-      mlContext.createBuffer(operandDescriptor)
+    const [inputTensor, outputTensor] = await Promise.all([
+      mlContext.createTensor(operandDescriptor),
+      mlContext.createTensor(operandDescriptor)
     ]);
 
-    mlContext.writeBuffer(inputBuffer, Float32Array.from([input]));
+    mlContext.writeTensor(inputTensor, Float32Array.from([input]));
 
     mlContext.dispatch(
-        mlGraph, {'input': inputBuffer}, {'output': outputBuffer});
+        mlGraph, {'input': inputTensor}, {'output': outputTensor});
 
-    const output = await mlContext.readBuffer(outputBuffer);
+    const output = await mlContext.readTensor(outputTensor);
     return new Float32Array(output)[0];
   }));
 
@@ -101,34 +101,34 @@ promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
   const mlGraph = await buildMulGraph(mlContext, operandDescriptor, 10);
 
   // write/write...
   const testInputs = [1, 2, 3, 4];
-  const inputAndOutputBuffers =
+  const inputAndOutputTensors =
       await Promise.all(testInputs.map(async (testInput) => {
-        const [inputBuffer, outputBuffer] = await Promise.all([
-          mlContext.createBuffer(operandDescriptor),
-          mlContext.createBuffer(operandDescriptor)
+        const [inputTensor, outputTensor] = await Promise.all([
+          mlContext.createTensor(operandDescriptor),
+          mlContext.createTensor(operandDescriptor)
         ]);
 
-        mlContext.writeBuffer(inputBuffer, Float32Array.from([testInput]));
-        return [inputBuffer, outputBuffer];
+        mlContext.writeTensor(inputTensor, Float32Array.from([testInput]));
+        return [inputTensor, outputTensor];
       }));
 
   // dispatch/read, dispatch/read, ...
-  let readBufferPromises = [];
+  let readTensorPromises = [];
   for (let i = 0; i < testInputs.length; i++) {
     mlContext.dispatch(
-        mlGraph, {'input': inputAndOutputBuffers[i][0]},
-        {'output': inputAndOutputBuffers[i][1]});
-    readBufferPromises.push(mlContext.readBuffer(inputAndOutputBuffers[i][1]));
+        mlGraph, {'input': inputAndOutputTensors[i][0]},
+        {'output': inputAndOutputTensors[i][1]});
+    readTensorPromises.push(mlContext.readTensor(inputAndOutputTensors[i][1]));
   };
 
   const actualOutputs =
-      await Promise.all(readBufferPromises.map(async (promise) => {
+      await Promise.all(readTensorPromises.map(async (promise) => {
         const output = await promise;
         return new Float32Array(output)[0];
       }));
@@ -140,34 +140,34 @@ promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
   const mlGraph = await buildMulGraph(mlContext, operandDescriptor, 9);
 
   // write/write...
   const testInputs = [1, 2, 3, 4];
-  const inputAndOutputBuffers =
+  const inputAndOutputTensors =
       await Promise.all(testInputs.map(async (testInput) => {
-        const [inputBuffer, outputBuffer] = await Promise.all([
-          mlContext.createBuffer(operandDescriptor),
-          mlContext.createBuffer(operandDescriptor)
+        const [inputTensor, outputTensor] = await Promise.all([
+          mlContext.createTensor(operandDescriptor),
+          mlContext.createTensor(operandDescriptor)
         ]);
 
-        mlContext.writeBuffer(inputBuffer, Float32Array.from([testInput]));
-        return [inputBuffer, outputBuffer];
+        mlContext.writeTensor(inputTensor, Float32Array.from([testInput]));
+        return [inputTensor, outputTensor];
       }));
 
   // dispatch/dispatch...
   for (let i = 0; i < testInputs.length; i++) {
     mlContext.dispatch(
-        mlGraph, {'input': inputAndOutputBuffers[i][0]},
-        {'output': inputAndOutputBuffers[i][1]});
+        mlGraph, {'input': inputAndOutputTensors[i][0]},
+        {'output': inputAndOutputTensors[i][1]});
   }
 
   // read/read...
   const actualOutputs = await Promise.all(
-      inputAndOutputBuffers.map(async (inputAndOutputBuffer) => {
-        const output = await mlContext.readBuffer(inputAndOutputBuffer[1]);
+      inputAndOutputTensors.map(async (inputAndOutputTensor) => {
+        const output = await mlContext.readTensor(inputAndOutputTensor[1]);
         return new Float32Array(output)[0];
       }));
 
@@ -178,29 +178,29 @@ promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
   const mlGraph = await buildMulGraph(mlContext, operandDescriptor, 2);
 
-  const buffers = await Promise.all([
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor)
+  const tensors = await Promise.all([
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor)
   ]);
 
-  mlContext.writeBuffer(buffers[0], Float32Array.from([1]));
+  mlContext.writeTensor(tensors[0], Float32Array.from([1]));
 
   // dispatch/dispatch...
-  for (let i = 0; i < buffers.length - 1; i++) {
+  for (let i = 0; i < tensors.length - 1; i++) {
     mlContext.dispatch(
-        mlGraph, {'input': buffers[i]}, {'output': buffers[i + 1]});
+        mlGraph, {'input': tensors[i]}, {'output': tensors[i + 1]});
   }
 
   // read/read...
-  const actualOutputs = await Promise.all(buffers.map(async (buffer) => {
-    const output = await mlContext.readBuffer(buffer);
+  const actualOutputs = await Promise.all(tensors.map(async (tensor) => {
+    const output = await mlContext.readTensor(tensor);
     return new Float32Array(output)[0];
   }));
 
@@ -211,34 +211,34 @@ promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
 
   // write/write...
   const testInputs = [1, 2, 3, 4];
-  const graphsAndBuffers =
+  const graphsAndTensors =
       await Promise.all(testInputs.map(async (testInput) => {
-        const [graph, inputBuffer, outputBuffer] = await Promise.all([
+        const [graph, inputTensor, outputTensor] = await Promise.all([
           buildMulGraph(mlContext, operandDescriptor, testInput),
-          mlContext.createBuffer(operandDescriptor),
-          mlContext.createBuffer(operandDescriptor)
+          mlContext.createTensor(operandDescriptor),
+          mlContext.createTensor(operandDescriptor)
         ]);
 
-        mlContext.writeBuffer(inputBuffer, Float32Array.from([testInput]));
-        return [graph, inputBuffer, outputBuffer];
+        mlContext.writeTensor(inputTensor, Float32Array.from([testInput]));
+        return [graph, inputTensor, outputTensor];
       }));
 
   // dispatch/read, dispatch/read, ...
-  let readBufferPromises = [];
-  for (let i = 0; i < graphsAndBuffers.length; i++) {
+  let readTensorPromises = [];
+  for (let i = 0; i < graphsAndTensors.length; i++) {
     mlContext.dispatch(
-        graphsAndBuffers[i][0], {'input': graphsAndBuffers[i][1]},
-        {'output': graphsAndBuffers[i][2]});
-    readBufferPromises.push(mlContext.readBuffer(graphsAndBuffers[i][2]));
+        graphsAndTensors[i][0], {'input': graphsAndTensors[i][1]},
+        {'output': graphsAndTensors[i][2]});
+    readTensorPromises.push(mlContext.readTensor(graphsAndTensors[i][2]));
   };
 
   const actualOutputs =
-      await Promise.all(readBufferPromises.map(async (promise) => {
+      await Promise.all(readTensorPromises.map(async (promise) => {
         const output = await promise;
         return new Float32Array(output)[0];
       }));
@@ -250,34 +250,34 @@ promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
 
   // write/write...
   const testInputs = [1, 2, 3, 4];
-  const graphsAndBuffers =
+  const graphsAndTensors =
       await Promise.all(testInputs.map(async (testInput) => {
-        const [graph, inputBuffer, outputBuffer] = await Promise.all([
+        const [graph, inputTensor, outputTensor] = await Promise.all([
           buildMulGraph(mlContext, operandDescriptor, testInput * 2),
-          mlContext.createBuffer(operandDescriptor),
-          mlContext.createBuffer(operandDescriptor)
+          mlContext.createTensor(operandDescriptor),
+          mlContext.createTensor(operandDescriptor)
         ]);
 
-        mlContext.writeBuffer(inputBuffer, Float32Array.from([testInput]));
-        return [graph, inputBuffer, outputBuffer];
+        mlContext.writeTensor(inputTensor, Float32Array.from([testInput]));
+        return [graph, inputTensor, outputTensor];
       }));
 
   // dispatch/dispatch...
-  for (let i = 0; i < graphsAndBuffers.length; i++) {
+  for (let i = 0; i < graphsAndTensors.length; i++) {
     mlContext.dispatch(
-        graphsAndBuffers[i][0], {'input': graphsAndBuffers[i][1]},
-        {'output': graphsAndBuffers[i][2]});
+        graphsAndTensors[i][0], {'input': graphsAndTensors[i][1]},
+        {'output': graphsAndTensors[i][2]});
   };
 
   // read/read...
   const actualOutputs =
-      await Promise.all(graphsAndBuffers.map(async (graphAndBuffers) => {
-        const output = await mlContext.readBuffer(graphAndBuffers[2]);
+      await Promise.all(graphsAndTensors.map(async (graphAndTensors) => {
+        const output = await mlContext.readTensor(graphAndTensors[2]);
         return new Float32Array(output)[0];
       }));
 
@@ -288,32 +288,32 @@ promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
 
   const graphs = await Promise.all([3, 2].map(async (multiplier) => {
     return buildMulGraph(mlContext, operandDescriptor, multiplier);
   }));
 
-  const buffers = await Promise.all([
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor)
+  const tensors = await Promise.all([
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor)
   ]);
 
-  mlContext.writeBuffer(buffers[0], Float32Array.from([1]));
+  mlContext.writeTensor(tensors[0], Float32Array.from([1]));
 
   // dispatch/dispatch...
-  for (let i = 0; i < buffers.length - 1; i++) {
+  for (let i = 0; i < tensors.length - 1; i++) {
     mlContext.dispatch(
-        graphs[i % 2], {'input': buffers[i]}, {'output': buffers[i + 1]});
+        graphs[i % 2], {'input': tensors[i]}, {'output': tensors[i + 1]});
   }
 
   // read/read...
-  const actualOutputs = await Promise.all(buffers.map(async (buffer) => {
-    const output = await mlContext.readBuffer(buffer);
+  const actualOutputs = await Promise.all(tensors.map(async (tensor) => {
+    const output = await mlContext.readTensor(tensor);
     return new Float32Array(output)[0];
   }));
 
@@ -324,24 +324,24 @@ promise_test(async () => {
   const operandDescriptor = {
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
   };
 
   const graphs = await Promise.all([2, 3].map(async (multiplier) => {
     return buildMulGraph(mlContext, operandDescriptor, multiplier);
   }));
 
-  const buffers = await Promise.all([
-    mlContext.createBuffer(operandDescriptor),
-    mlContext.createBuffer(operandDescriptor)
+  const tensors = await Promise.all([
+    mlContext.createTensor(operandDescriptor),
+    mlContext.createTensor(operandDescriptor)
   ]);
 
-  // Write to the buffer which will be initially used as an input.
-  mlContext.writeBuffer(buffers[0], Float32Array.from([1]));
+  // Write to the tensor which will be initially used as an input.
+  mlContext.writeTensor(tensors[0], Float32Array.from([1]));
 
-  // Double the value in one buffer, sticking the result in the other buffer.
+  // Double the value in one tensor, sticking the result in the other tensor.
   //
-  // buffers[0]  buffers[1]
+  // tensors[0]  tensors[1]
   //     1
   //        >---->  2
   //     6  <----<
@@ -353,15 +353,15 @@ promise_test(async () => {
   // dispatch/dispatch...
   for (let i = 0; i < 6; i++) {
     mlContext.dispatch(
-        graphs[i % 2], {'input': buffers[i % 2]},
-        {'output': buffers[(i + 1) % 2]});
+        graphs[i % 2], {'input': tensors[i % 2]},
+        {'output': tensors[(i + 1) % 2]});
   };
 
   // read/read...
-  const actualOutputs = await Promise.all(buffers.map(async (buffer) => {
-    const output = await mlContext.readBuffer(buffer);
+  const actualOutputs = await Promise.all(tensors.map(async (tensor) => {
+    const output = await mlContext.readTensor(tensor);
     return new Float32Array(output)[0];
   }));
 
   assert_array_equals(actualOutputs, [216, 72]);
-}, 'different graphs using the same buffers');
+}, 'different graphs using the same tensors');
diff --git a/tests/wpt/tests/webnn/conformance_tests/quantizeLinear.https.any.js b/tests/wpt/tests/webnn/conformance_tests/quantizeLinear.https.any.js
new file mode 100644
index 00000000000..acae378d80b
--- /dev/null
+++ b/tests/wpt/tests/webnn/conformance_tests/quantizeLinear.https.any.js
@@ -0,0 +1,156 @@
+// META: title=test WebNN API quantizeLinear operation
+// META: global=window,dedicatedworker
+// META: variant=?cpu
+// META: variant=?gpu
+// META: variant=?npu
+// META: script=../resources/utils.js
+// META: timeout=long
+
+'use strict';
+
+// Calculate a floating-point input down to a low-precision integer
+// (typically uint8 with a zero-point bias) following the expression:
+//    output = clamp(roundToNearestEvens(input / scale) + zeroPoint, 0, 255).
+//
+// MLOperand quantizeLinear(
+//     MLOperand input, MLOperand scale, MLOperand zeroPoint,
+//     optional MLOperatorOptions options = {});
+
+
+const getQuantizeLinearPrecisionTolerance = (graphResources) => {
+  const toleranceValueDict = {int8: 1, uint8: 1};
+  const expectedDataType =
+      getExpectedDataTypeOfSingleOutput(graphResources.expectedOutputs);
+  return {metricType: 'ULP', value: toleranceValueDict[expectedDataType]};
+};
+
+const quantizeLinearTests = [
+  {
+    'name':
+        'quantizeLinear float32 0D scalar tensor with int8 scalar zeroPoint',
+    'graph': {
+      'inputs': {
+        'quantizeLinearInput': {
+          'data': [10.794857501983643],
+          'descriptor': {'dimensions': [], 'dataType': 'float32'},
+          'constant': true
+        },
+        'quantizeLinearScale': {
+          'data': [1.1202747821807861],
+          'descriptor': {'dimensions': [], 'dataType': 'float32'},
+          'constant': true
+        },
+        'quantizeLinearZeroPoint': {
+          'data': [1],
+          'descriptor': {'dimensions': [], 'dataType': 'int8'},
+          'constant': true
+        }
+      },
+      'operators': [{
+        'name': 'quantizeLinear',
+        'arguments': [
+          {'input': 'quantizeLinearInput'}, {'scale': 'quantizeLinearScale'},
+          {'zeroPoint': 'quantizeLinearZeroPoint'}
+        ],
+        'outputs': 'quantizeLinearOutput'
+      }],
+      'expectedOutputs': {
+        'quantizeLinearOutput':
+            {'data': [11], 'descriptor': {'dimensions': [], 'dataType': 'int8'}}
+      }
+    }
+  },
+  {
+    'name': 'quantizeLinear float32 1D constant tensor broadcasting zeroPoint',
+    'graph': {
+      'inputs': {
+        'quantizeLinearInput': {
+          'data': [
+            -2.549168109893799, -4.794857501983643, 8.413617134094238,
+            6.108623504638672
+          ],
+          'descriptor': {'dimensions': [4], 'dataType': 'float32'},
+          'constant': true
+        },
+        'quantizeLinearScale': {
+          'data': [
+            9.343092918395996,
+            0.2800687253475189,
+            -4.617084980010986,
+            1.1202747821807861,
+          ],
+          'descriptor': {'dimensions': [4], 'dataType': 'float32'},
+          'constant': true
+        },
+        'quantizeLinearZeroPoint': {
+          'data': [128],
+          'descriptor': {'dimensions': [], 'dataType': 'uint8'},
+          'constant': true
+        }
+      },
+      'operators': [{
+        'name': 'quantizeLinear',
+        'arguments': [
+          {'input': 'quantizeLinearInput'}, {'scale': 'quantizeLinearScale'},
+          {'zeroPoint': 'quantizeLinearZeroPoint'}
+        ],
+        'outputs': 'quantizeLinearOutput'
+      }],
+      'expectedOutputs': {
+        'quantizeLinearOutput': {
+          'data': [128, 111, 126, 133],
+          'descriptor': {'dimensions': [4], 'dataType': 'uint8'}
+        }
+      }
+    }
+  },
+  {
+    'name':
+        'quantizeLinear float32 4D constant tensor broadcasting scale and zeroPoint',
+    'graph': {
+      'inputs': {
+        'quantizeLinearInput': {
+          'data': [
+            -2.549168109893799, -4.794857501983643, 8.413617134094238,
+            6.108623504638672
+          ],
+          'descriptor': {'dimensions': [1, 1, 2, 2], 'dataType': 'float32'},
+          'constant': true
+        },
+        'quantizeLinearScale': {
+          'data': [0.2800687253475189, -4.617084980010986],
+          'descriptor': {'dimensions': [2, 1], 'dataType': 'float32'},
+          'constant': true
+        },
+        'quantizeLinearZeroPoint': {
+          'data': [128],
+          'descriptor': {'dimensions': [], 'dataType': 'uint8'},
+          'constant': true
+        }
+      },
+      'operators': [{
+        'name': 'quantizeLinear',
+        'arguments': [
+          {'input': 'quantizeLinearInput'}, {'scale': 'quantizeLinearScale'},
+          {'zeroPoint': 'quantizeLinearZeroPoint'}
+        ],
+        'outputs': 'quantizeLinearOutput'
+      }],
+      'expectedOutputs': {
+        'quantizeLinearOutput': {
+          'data': [119, 111, 126, 127],
+          'descriptor': {'dimensions': [1, 1, 2, 2], 'dataType': 'uint8'}
+        }
+      }
+    }
+  }
+];
+
+if (navigator.ml) {
+  quantizeLinearTests.forEach((test) => {
+    webnn_conformance_test(
+        buildGraphAndCompute, getQuantizeLinearPrecisionTolerance, test);
+  });
+} else {
+  test(() => assert_implements(navigator.ml, 'missing navigator.ml'));
+}
diff --git a/tests/wpt/tests/webnn/conformance_tests/buffer.https.any.js b/tests/wpt/tests/webnn/conformance_tests/tensor.https.any.js
similarity index 56%
rename from tests/wpt/tests/webnn/conformance_tests/buffer.https.any.js
rename to tests/wpt/tests/webnn/conformance_tests/tensor.https.any.js
index 279a82194d1..68153b8afd4 100644
--- a/tests/wpt/tests/webnn/conformance_tests/buffer.https.any.js
+++ b/tests/wpt/tests/webnn/conformance_tests/tensor.https.any.js
@@ -1,4 +1,4 @@
-// META: title=test WebNN API buffer operations
+// META: title=test WebNN API tensor operations
 // META: global=window,dedicatedworker
 // META: variant=?cpu
 // META: variant=?gpu
@@ -9,7 +9,7 @@
 
 'use strict';
 
-// https://www.w3.org/TR/webnn/#api-mlbuffer
+// https://www.w3.org/TR/webnn/#api-mltensor
 
 const bytesPerDataType = (dataType) => {
   if (dataType === 'int8' || dataType === 'uint8') {
@@ -32,20 +32,20 @@ const sizeOfDescriptor = (descriptor) => {
       bytesPerDataType(descriptor.dataType));
 };
 
-const getDescriptorFromBuffer = (buffer) => {
+const getDescriptorFromTensor = (tensor) => {
   return {
-    dataType: buffer.dataType,
-    dimensions: buffer.shape,
-    usage: buffer.usage
+    dataType: tensor.dataType,
+    dimensions: tensor.shape,
+    usage: tensor.usage
   };
 };
 
 
 /**
- * WebNN destroy buffer twice test.
+ * WebNN destroy tensor twice test.
  * @param {String} testName - The name of the test operation.
  */
-const testDestroyWebNNBuffer = (testName) => {
+const testDestroyTensor = (testName) => {
   let mlContext;
   promise_setup(async () => {
     try {
@@ -56,27 +56,27 @@ const testDestroyWebNNBuffer = (testName) => {
     }
 
     try {
-      const mlBuffer =
-          await mlContext.createBuffer({dataType: 'int32', dimensions: [2, 3]});
+      const mlTensor =
+          await mlContext.createTensor({dataType: 'int32', dimensions: [2, 3]});
     } catch (e) {
       throw new AssertionError(
-          `Unable to create buffer for ${variant} variant. ${e}`);
+          `Unable to create tensor for ${variant} variant. ${e}`);
     }
   });
   promise_test(async () => {
-    let mlBuffer =
-        await mlContext.createBuffer({dataType: 'int32', dimensions: [2, 3]});
-    mlBuffer.destroy();
-    mlBuffer.destroy();
+    let mlTensor =
+        await mlContext.createTensor({dataType: 'int32', dimensions: [2, 3]});
+    mlTensor.destroy();
+    mlTensor.destroy();
   }, `${testName}`);
 };
 
 /**
- * WebNN create buffer test.
+ * WebNN create tensor test.
  * @param {String} testName - The name of the test operation.
- * @param {MLTensorDescriptor} bufferDescriptor - The intended buffer specs.
+ * @param {MLTensorDescriptor} tensorDescriptor - The intended tensor specs.
  */
-const testCreateWebNNBuffer = (testName, bufferDescriptor) => {
+const testCreateTensor = (testName, tensorDescriptor) => {
   let mlContext;
 
   promise_setup(async () => {
@@ -89,28 +89,28 @@ const testCreateWebNNBuffer = (testName, bufferDescriptor) => {
   });
   promise_test(async t => {
     if (!mlContext.opSupportLimits().input.dataTypes.includes(
-            bufferDescriptor.dataType)) {
+            tensorDescriptor.dataType)) {
       await promise_rejects_js(
-          t, TypeError, mlContext.createBuffer(bufferDescriptor));
+          t, TypeError, mlContext.createTensor(tensorDescriptor));
       return;
     }
 
-    const mlBuffer = await mlContext.createBuffer(bufferDescriptor);
+    const mlTensor = await mlContext.createTensor(tensorDescriptor);
     assert_equals(
-        mlBuffer.dataType, bufferDescriptor.dataType,
-        'buffer data types do not match');
+        mlTensor.dataType, tensorDescriptor.dataType,
+        'tensor data types do not match');
     assert_array_equals(
-        mlBuffer.shape, bufferDescriptor.dimensions,
-        'buffer shapes do not match');
-  }, `${testName} / ${bufferDescriptor.dataType}`);
+        mlTensor.shape, tensorDescriptor.dimensions,
+        'tensor shapes do not match');
+  }, `${testName} / ${tensorDescriptor.dataType}`);
 };
 
 /**
- * Same as above, but expect creating the buffer to fail.
+ * Same as above, but expect creating the tensor to fail.
  * @param {String} testName - The name of the test operation.
- * @param {MLTensorDescriptor} bufferDescriptor - The intended buffer specs.
+ * @param {MLTensorDescriptor} tensorDescriptor - The intended tensor specs.
  */
-const testCreateWebNNBufferFails = (testName, bufferDescriptor) => {
+const testCreateTensorFails = (testName, tensorDescriptor) => {
   let mlContext;
 
   promise_setup(async () => {
@@ -123,28 +123,28 @@ const testCreateWebNNBufferFails = (testName, bufferDescriptor) => {
   });
   promise_test(async t => {
     await promise_rejects_js(
-        t, TypeError, mlContext.createBuffer(bufferDescriptor));
-  }, `${testName} / ${bufferDescriptor.dataType}`);
+        t, TypeError, mlContext.createTensor(tensorDescriptor));
+  }, `${testName} / ${tensorDescriptor.dataType}`);
 };
 
 /**
- * Asserts the buffer data in MLTensor matches expected.
- * @param {MLContext} mlContext - The context used to create the buffer.
- * @param {MLTensor} mlBuffer - The buffer to read and compare data.
- * @param {Array} expected - Array of the expected data in the buffer.
+ * Asserts the tensor data in MLTensor matches expected.
+ * @param {MLContext} mlContext - The context used to create the tensor.
+ * @param {MLTensor} mlTensor - The tensor to read and compare data.
+ * @param {Array} expected - Array of the expected data in the tensor.
  */
-const assert_buffer_data_equals = async (mlContext, mlBuffer, expected) => {
-  const actual = await mlContext.readBuffer(mlBuffer);
+const assert_tensor_data_equals = async (mlContext, mlTensor, expected) => {
+  const actual = await mlContext.readTensor(mlTensor);
   assert_array_equals(
       new expected.constructor(actual), expected,
-      'Read buffer data equals expected data.');
+      'Read tensor data equals expected data.');
 };
 
 /**
- * WebNN write buffer operation test.
+ * WebNN write tensor operation test.
  * @param {String} testName - The name of the test operation.
  */
-const testWriteWebNNBuffer = (testName) => {
+const testWriteTensor = (testName) => {
   let mlContext;
   promise_setup(async () => {
     try {
@@ -155,155 +155,155 @@ const testWriteWebNNBuffer = (testName) => {
     }
 
     try {
-      const mlBuffer =
-          await mlContext.createBuffer({dataType: 'int32', dimensions: [2, 3]});
+      const mlTensor =
+          await mlContext.createTensor({dataType: 'int32', dimensions: [2, 3]});
     } catch (e) {
       throw new AssertionError(
-          `Unable to create buffer for ${variant} variant. ${e}`);
+          `Unable to create tensor for ${variant} variant. ${e}`);
     }
   });
 
   promise_test(async () => {
-    const bufferDescriptor = {
+    const tensorDescriptor = {
       dataType: 'int32',
       dimensions: [1],
-      usage: MLTensorUsage.WRITE_TO,
+      usage: MLTensorUsage.WRITE,
     };
-    let mlBuffer = await mlContext.createBuffer(bufferDescriptor);
+    let mlTensor = await mlContext.createTensor(tensorDescriptor);
 
-    const bufferByteLength = sizeOfDescriptor(bufferDescriptor);
-    let arrayBuffer = new ArrayBuffer(bufferByteLength);
+    const tensorByteLength = sizeOfDescriptor(tensorDescriptor);
+    let arrayBuffer = new ArrayBuffer(tensorByteLength);
 
-    // Writing with a size that goes past that source buffer length.
+    // Writing with a size that goes past that source tensor length.
     assert_throws_js(
         TypeError,
-        () => mlContext.writeBuffer(
-            mlBuffer, new Uint8Array(arrayBuffer), /*srcOffset=*/ 0,
-            /*srcSize=*/ bufferByteLength + 1));
+        () => mlContext.writeTensor(
+            mlTensor, new Uint8Array(arrayBuffer), /*srcOffset=*/ 0,
+            /*srcSize=*/ tensorByteLength + 1));
     assert_throws_js(
         TypeError,
-        () => mlContext.writeBuffer(
-            mlBuffer, new Uint8Array(arrayBuffer), /*srcOffset=*/ 3,
-            /*srcSize=*/ bufferByteLength));
+        () => mlContext.writeTensor(
+            mlTensor, new Uint8Array(arrayBuffer), /*srcOffset=*/ 3,
+            /*srcSize=*/ tensorByteLength));
 
     // Writing with a source offset that is out of range of the source size.
     assert_throws_js(
         TypeError,
-        () => mlContext.writeBuffer(
-            mlBuffer, new Uint8Array(arrayBuffer),
-            /*srcOffset=*/ bufferByteLength + 1));
+        () => mlContext.writeTensor(
+            mlTensor, new Uint8Array(arrayBuffer),
+            /*srcOffset=*/ tensorByteLength + 1));
 
     // Writing with a source offset that is out of range of implicit copy size.
     assert_throws_js(
         TypeError,
-        () => mlContext.writeBuffer(
-            mlBuffer, new Uint8Array(arrayBuffer),
-            /*srcOffset=*/ bufferByteLength + 1, /*srcSize=*/ undefined));
+        () => mlContext.writeTensor(
+            mlTensor, new Uint8Array(arrayBuffer),
+            /*srcOffset=*/ tensorByteLength + 1, /*srcSize=*/ undefined));
 
     assert_throws_js(
         TypeError,
-        () => mlContext.writeBuffer(
-            mlBuffer, new Uint8Array(arrayBuffer), /*srcOffset=*/ undefined,
-            /*srcSize=*/ bufferByteLength + 1));
+        () => mlContext.writeTensor(
+            mlTensor, new Uint8Array(arrayBuffer), /*srcOffset=*/ undefined,
+            /*srcSize=*/ tensorByteLength + 1));
 
     assert_throws_js(
         TypeError,
-        () => mlContext.writeBuffer(
-            mlBuffer, Uint8Array.from([0xEE, 0xEE, 0xEE, 0xEE, 0xEE])));
+        () => mlContext.writeTensor(
+            mlTensor, Uint8Array.from([0xEE, 0xEE, 0xEE, 0xEE, 0xEE])));
   }, `${testName} / error`);
 
   promise_test(async () => {
-    const bufferDescriptor = {
+    const tensorDescriptor = {
       dataType: 'int32',
       dimensions: [2, 2],
-      usage: MLTensorUsage.WRITE_TO,
+      usage: MLTensorUsage.WRITE,
     };
-    let mlBuffer = await mlContext.createBuffer(bufferDescriptor);
+    let mlTensor = await mlContext.createTensor(tensorDescriptor);
 
     // Writing data to a destroyed MLTensor should throw.
-    mlBuffer.destroy();
+    mlTensor.destroy();
 
     assert_throws_dom(
         'InvalidStateError',
-        () => mlContext.writeBuffer(
-            mlBuffer, new Uint8Array(sizeOfDescriptor(bufferDescriptor))));
+        () => mlContext.writeTensor(
+            mlTensor, new Uint8Array(sizeOfDescriptor(tensorDescriptor))));
   }, `${testName} / destroy`);
 
   promise_test(async () => {
-    const bufferDescriptor = {
+    const tensorDescriptor = {
       dataType: 'int32',
       dimensions: [2, 3],
-      usage: MLTensorUsage.WRITE_TO,
+      usage: MLTensorUsage.WRITE,
     };
-    let mlBuffer = await mlContext.createBuffer(bufferDescriptor);
+    let mlTensor = await mlContext.createTensor(tensorDescriptor);
 
     let anotherMLContext = await navigator.ml.createContext(contextOptions);
-    let anotherMLTensor = await anotherMLContext.createBuffer(bufferDescriptor);
+    let anotherMLTensor = await anotherMLContext.createTensor(tensorDescriptor);
 
     let inputData =
-        new Uint8Array(sizeOfDescriptor(bufferDescriptor)).fill(0xAA);
+        new Uint8Array(sizeOfDescriptor(tensorDescriptor)).fill(0xAA);
     assert_throws_js(
-        TypeError, () => mlContext.writeBuffer(anotherMLTensor, inputData));
+        TypeError, () => mlContext.writeTensor(anotherMLTensor, inputData));
     assert_throws_js(
-        TypeError, () => anotherMLContext.writeBuffer(mlBuffer, inputData));
+        TypeError, () => anotherMLContext.writeTensor(mlTensor, inputData));
   }, `${testName} / context_mismatch`);
 
   promise_test(async () => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [1],
-      usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
     });
 
-    // Initialize the buffer.
+    // Initialize the tensor.
     const inputData = Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]);
-    mlContext.writeBuffer(mlBuffer, inputData);
+    mlContext.writeTensor(mlTensor, inputData);
 
     // Writing zero bytes from a zero write size.
-    mlContext.writeBuffer(mlBuffer, Uint8Array.from([0xBB]), 0, 0);
+    mlContext.writeTensor(mlTensor, Uint8Array.from([0xBB]), 0, 0);
 
-    await assert_buffer_data_equals(mlContext, mlBuffer, inputData);
+    await assert_tensor_data_equals(mlContext, mlTensor, inputData);
 
-    // Writing zero bytes at the end of the buffer.
-    mlContext.writeBuffer(
-        mlBuffer, Uint32Array.from([0xBBBBBBBB]), /*srcOffset=*/ 1);
+    // Writing zero bytes at the end of the tensor.
+    mlContext.writeTensor(
+        mlTensor, Uint32Array.from([0xBBBBBBBB]), /*srcOffset=*/ 1);
 
-    await assert_buffer_data_equals(mlContext, mlBuffer, inputData);
+    await assert_tensor_data_equals(mlContext, mlTensor, inputData);
   }, `${testName} / zero_write`);
 
   promise_test(async () => {
-    const bufferDescriptor = {
+    const tensorDescriptor = {
       dataType: 'int32',
       dimensions: [2, 2],
-      usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
     };
-    let mlBuffer = await mlContext.createBuffer(bufferDescriptor);
+    let mlTensor = await mlContext.createTensor(tensorDescriptor);
 
-    const bufferByteLength = sizeOfDescriptor(bufferDescriptor);
-    let inputBuffer = new ArrayBuffer(bufferByteLength);
+    const tensorByteLength = sizeOfDescriptor(tensorDescriptor);
+    let inputBuffer = new ArrayBuffer(tensorByteLength);
 
-    // Initialize the buffer.
+    // Initialize the tensor.
     const int32View = new Int32Array(inputBuffer);
     int32View.fill(0xBBBBBBBB);
 
-    mlContext.writeBuffer(mlBuffer, int32View);
+    mlContext.writeTensor(mlTensor, int32View);
 
     // Writing to a detached buffer should be ignored.
     const detachedBuffer = inputBuffer.transfer();
     assert_true(inputBuffer.detached, 'array buffer should be detached.');
 
-    mlContext.writeBuffer(mlBuffer, inputBuffer);
+    mlContext.writeTensor(mlTensor, inputBuffer);
 
-    await assert_buffer_data_equals(
-        mlContext, mlBuffer, new Int32Array(detachedBuffer));
+    await assert_tensor_data_equals(
+        mlContext, mlTensor, new Int32Array(detachedBuffer));
   }, `${testName} / detached`);
 };
 
 /**
- * WebNN read buffer operation test.
+ * WebNN read tensor operation test.
  * @param {String} testName - The name of the test operation.
  */
-const testReadWebNNBuffer = (testName) => {
+const testReadTensor = (testName) => {
   let mlContext;
   promise_setup(async () => {
     try {
@@ -314,165 +314,164 @@ const testReadWebNNBuffer = (testName) => {
     }
 
     try {
-      const mlBuffer =
-          await mlContext.createBuffer({dataType: 'int32', dimensions: [2, 3]});
+      const mlTensor =
+          await mlContext.createTensor({dataType: 'int32', dimensions: [2, 3]});
     } catch (e) {
       throw new AssertionError(
-          `Unable to create buffer for ${variant} variant. ${e}`);
+          `Unable to create tensor for ${variant} variant. ${e}`);
     }
   });
 
   promise_test(async t => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [2, 2],
-      usage: MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.READ,
     });
 
     // Reading a destroyed MLTensor should reject.
-    mlBuffer.destroy();
+    mlTensor.destroy();
 
     await promise_rejects_dom(
-        t, 'InvalidStateError', mlContext.readBuffer(mlBuffer));
+        t, 'InvalidStateError', mlContext.readTensor(mlTensor));
   }, `${testName} / read_after_destroy`);
 
   promise_test(async t => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [2, 3],
-      usage: MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.READ,
     });
 
-    let promise = mlContext.readBuffer(mlBuffer);
-    let anotherPromise = mlContext.readBuffer(mlBuffer);
+    let promise = mlContext.readTensor(mlTensor);
+    let anotherPromise = mlContext.readTensor(mlTensor);
 
-    mlBuffer.destroy();
+    mlTensor.destroy();
 
     await promise_rejects_dom(t, 'InvalidStateError', promise);
     await promise_rejects_dom(t, 'InvalidStateError', anotherPromise);
   }, `${testName} / read_before_destroy`);
 
   promise_test(async () => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [1024],
-      usage: MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.READ,
     });
 
-    await assert_buffer_data_equals(
-        mlContext, mlBuffer, new Uint32Array(1024));
+    await assert_tensor_data_equals(mlContext, mlTensor, new Uint32Array(1024));
   }, `${testName} / uninitialized`);
 
   promise_test(async () => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [1],
-      usage: MLTensorUsage.READ_FROM | MLTensorUsage.WRITE_TO,
+      usage: MLTensorUsage.READ | MLTensorUsage.WRITE,
     });
 
-    // Initialize the buffer.
-    mlContext.writeBuffer(mlBuffer, Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]));
+    // Initialize the tensor.
+    mlContext.writeTensor(mlTensor, Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]));
 
-    mlContext.writeBuffer(mlBuffer, Uint32Array.from([0xBBBBBBBB]));
-    await assert_buffer_data_equals(
-        mlContext, mlBuffer, Uint32Array.from([0xBBBBBBBB]));
+    mlContext.writeTensor(mlTensor, Uint32Array.from([0xBBBBBBBB]));
+    await assert_tensor_data_equals(
+        mlContext, mlTensor, Uint32Array.from([0xBBBBBBBB]));
     ;
   }, `${testName} / full_size`);
 
   promise_test(async () => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [1],
-      usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
     });
 
-    // Initialize the buffer.
-    mlContext.writeBuffer(mlBuffer, Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]));
+    // Initialize the tensor.
+    mlContext.writeTensor(mlTensor, Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]));
 
-    // Writing to the remainder of the buffer from source offset.
-    mlContext.writeBuffer(
-        mlBuffer, Uint8Array.from([0xCC, 0xCC, 0xBB, 0xBB]),
+    // Writing to the remainder of the tensor from source offset.
+    mlContext.writeTensor(
+        mlTensor, Uint8Array.from([0xCC, 0xCC, 0xBB, 0xBB]),
         /*srcOffset=*/ 2);
-    await assert_buffer_data_equals(
-        mlContext, mlBuffer, Uint8Array.from([0xBB, 0xBB, 0xAA, 0xAA]));
+    await assert_tensor_data_equals(
+        mlContext, mlTensor, Uint8Array.from([0xBB, 0xBB, 0xAA, 0xAA]));
   }, `${testName} / src_offset_only`);
 
   promise_test(async () => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [1],
-      usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
     });
 
-    // Initialize the buffer.
-    mlContext.writeBuffer(mlBuffer, Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]));
+    // Initialize the tensor.
+    mlContext.writeTensor(mlTensor, Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]));
 
     // Writing with both a source offset and size.
-    mlContext.writeBuffer(
-        mlBuffer, Uint8Array.from([0xDD, 0xDD, 0xCC, 0xDD]),
+    mlContext.writeTensor(
+        mlTensor, Uint8Array.from([0xDD, 0xDD, 0xCC, 0xDD]),
         /*srcOffset=*/ 2, /*srcSize=*/ 1);
-    await assert_buffer_data_equals(
-        mlContext, mlBuffer, Uint8Array.from([0xCC, 0xAA, 0xAA, 0xAA]));
+    await assert_tensor_data_equals(
+        mlContext, mlTensor, Uint8Array.from([0xCC, 0xAA, 0xAA, 0xAA]));
   }, `${testName} / src_offset_and_size`);
 
   promise_test(async () => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [1],
-      usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
     });
 
-    // Initialize the buffer.
-    mlContext.writeBuffer(mlBuffer, Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]));
+    // Initialize the tensor.
+    mlContext.writeTensor(mlTensor, Uint8Array.from([0xAA, 0xAA, 0xAA, 0xAA]));
 
-    // Using an offset allows a larger source buffer to fit.
-    mlContext.writeBuffer(
-        mlBuffer, Uint8Array.from([0xEE, 0xEE, 0xEE, 0xEE, 0xEE]),
+    // Using an offset allows a larger source tensor to fit.
+    mlContext.writeTensor(
+        mlTensor, Uint8Array.from([0xEE, 0xEE, 0xEE, 0xEE, 0xEE]),
         /*srcOffset=*/ 1);
-    await assert_buffer_data_equals(
-        mlContext, mlBuffer, Uint8Array.from([0xEE, 0xEE, 0xEE, 0xEE]));
+    await assert_tensor_data_equals(
+        mlContext, mlTensor, Uint8Array.from([0xEE, 0xEE, 0xEE, 0xEE]));
   }, `${testName} / larger_src_data`);
 
   promise_test(async () => {
-    let mlBuffer = await mlContext.createBuffer({
+    let mlTensor = await mlContext.createTensor({
       dataType: 'int32',
       dimensions: [1],
-      usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
     });
 
     const inputData = [0xAA, 0xAA, 0xAA, 0xAA];
 
     // Writing with a source offset of undefined should be treated as 0.
-    mlContext.writeBuffer(
-        mlBuffer, Uint8Array.from(inputData), /*srcOffset=*/ undefined,
+    mlContext.writeTensor(
+        mlTensor, Uint8Array.from(inputData), /*srcOffset=*/ undefined,
         /*srcSize=*/ inputData.length);
-    await assert_buffer_data_equals(
-        mlContext, mlBuffer, Uint8Array.from(inputData));
+    await assert_tensor_data_equals(
+        mlContext, mlTensor, Uint8Array.from(inputData));
   }, `${testName} / no_src_offset`);
 
   promise_test(async t => {
-    const bufferDescriptor = {
+    const tensorDescriptor = {
       dataType: 'int32',
       dimensions: [2, 3],
-      usage: MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.READ,
     };
-    let mlBuffer = await mlContext.createBuffer(bufferDescriptor);
+    let mlTensor = await mlContext.createTensor(tensorDescriptor);
 
     let anotherMLContext = await navigator.ml.createContext(contextOptions);
-    let anotherMLTensor = await anotherMLContext.createBuffer(bufferDescriptor);
+    let anotherMLTensor = await anotherMLContext.createTensor(tensorDescriptor);
 
     await promise_rejects_js(
-        t, TypeError, mlContext.readBuffer(anotherMLTensor));
+        t, TypeError, mlContext.readTensor(anotherMLTensor));
     await promise_rejects_js(
-        t, TypeError, anotherMLContext.readBuffer(mlBuffer));
+        t, TypeError, anotherMLContext.readTensor(mlTensor));
   }, `${testName} / context_mismatch`);
 };
 
 /**
- * WebNN dispatch buffer operation test.
+ * WebNN dispatch tensor operation test.
  * @param {String} testName - The name of the test operation.
  */
-const testDispatchWebNNBuffer = (testName) => {
+const testDispatchTensor = (testName) => {
   let mlContext;
   let mlGraph;
   const shape = [3, 5];
@@ -487,33 +486,33 @@ const testDispatchWebNNBuffer = (testName) => {
     }
     // Construct a simple graph: A = B + C, with two outputs.
     const builder = new MLGraphBuilder(mlContext);
-    const bufferDescriptor = {
+    const tensorDescriptor = {
       dataType: 'float32',
       dimensions: shape,
-      usage: MLTensorUsage.WRITE_TO | MLTensorUsage.READ_FROM,
+      usage: MLTensorUsage.WRITE | MLTensorUsage.READ,
     };
-    const lhsOperand = builder.input('lhs', bufferDescriptor);
-    const rhsOperand = builder.input('rhs', bufferDescriptor);
+    const lhsOperand = builder.input('lhs', tensorDescriptor);
+    const rhsOperand = builder.input('rhs', tensorDescriptor);
     const output1Operand = builder.add(lhsOperand, rhsOperand);
     const output2Operand = builder.add(lhsOperand, rhsOperand);
     mlGraph = await builder.build(
         {'output1': output1Operand, 'output2': output2Operand});
 
     try {
-      const mlBuffer =
-          await mlContext.createBuffer({dataType: 'int32', dimensions: [2, 3]});
+      const mlTensor =
+          await mlContext.createTensor({dataType: 'int32', dimensions: [2, 3]});
     } catch (e) {
       throw new AssertionError(
-          `Unable to create buffer for ${variant} variant. ${e}`);
+          `Unable to create tensor for ${variant} variant. ${e}`);
     }
 
     inputs = {
-      'lhs': await mlContext.createBuffer(bufferDescriptor),
-      'rhs': await mlContext.createBuffer(bufferDescriptor),
+      'lhs': await mlContext.createTensor(tensorDescriptor),
+      'rhs': await mlContext.createTensor(tensorDescriptor),
     };
     outputs = {
-      'output1': await mlContext.createBuffer(bufferDescriptor),
-      'output2': await mlContext.createBuffer(bufferDescriptor),
+      'output1': await mlContext.createTensor(tensorDescriptor),
+      'output2': await mlContext.createTensor(tensorDescriptor),
     };
   });
 
@@ -524,32 +523,32 @@ const testDispatchWebNNBuffer = (testName) => {
     mlContext.dispatch(mlGraph, inputs, outputs);
 
     // Test the wrong context being used for inputs.
-    const lhsBuffer = await anotherMLContext.createBuffer(
-        getDescriptorFromBuffer(inputs['lhs']));
+    const lhsTensor = await anotherMLContext.createTensor(
+        getDescriptorFromTensor(inputs['lhs']));
     assert_throws_js(
         TypeError,
         () => mlContext.dispatch(
             mlGraph, {
-              'lhs': lhsBuffer,
+              'lhs': lhsTensor,
               'rhs': inputs['rhs'],
             },
             outputs));
 
     // Test the wrong context being used for outputs.
-    const outputBuffer1 = await anotherMLContext.createBuffer(
-        getDescriptorFromBuffer(outputs['output1']));
+    const outputTensor1 = await anotherMLContext.createTensor(
+        getDescriptorFromTensor(outputs['output1']));
     assert_throws_js(TypeError, () => mlContext.dispatch(mlGraph, inputs, {
-      'output1': outputBuffer1,
+      'output1': outputTensor1,
       'output2': outputs['output2'],
     }));
   }, `${testName} / context_mismatch`);
 
   promise_test(async () => {
-    // Control case, valid buffers.
+    // Control case, valid tensors.
     mlContext.dispatch(mlGraph, inputs, outputs);
 
     // Input is a different shape.
-    const lhsBuffer = await mlContext.createBuffer({
+    const lhsTensor = await mlContext.createTensor({
       dataType: inputs['lhs'].dataType,
       // Input rank is too high.
       dimensions: inputs['lhs'].shape.concat([2])
@@ -559,12 +558,12 @@ const testDispatchWebNNBuffer = (testName) => {
         TypeError,
         () => mlContext.dispatch(
             mlGraph, {
-              'lhs': lhsBuffer,
+              'lhs': lhsTensor,
               'rhs': inputs['rhs'],
             },
             outputs));
 
-    const rhsBuffer = await mlContext.createBuffer({
+    const rhsTensor = await mlContext.createTensor({
       dataType: inputs['rhs'].dataType,
       // Input rank is too low.
       dimensions: inputs['rhs'].shape.slice(1)
@@ -575,35 +574,35 @@ const testDispatchWebNNBuffer = (testName) => {
         () => mlContext.dispatch(
             mlGraph, {
               'lhs': inputs['lhs'],
-              'rhs': rhsBuffer,
+              'rhs': rhsTensor,
             },
             outputs));
 
     // Output is a different shape. Dimension value is too large.
     let output1WrongShape = [...outputs['output1'].shape];
     output1WrongShape[0] += 2;
-    const outputBuffer1 = await mlContext.createBuffer(
+    const outputTensor1 = await mlContext.createTensor(
         {dataType: outputs['output1'].dataType, dimensions: output1WrongShape});
 
     assert_throws_js(TypeError, () => mlContext.dispatch(mlGraph, inputs, {
-      'output1': outputBuffer1,
+      'output1': outputTensor1,
       'output2': outputs['output2'],
     }));
 
     // Output is a different shape. Dimension value is too small.
     let output2WrongShape = [...outputs['output2'].shape];
     output2WrongShape[1] -= 1;
-    const outputBuffer2 = await mlContext.createBuffer(
+    const outputTensor2 = await mlContext.createTensor(
         {dataType: outputs['output2'].dataType, dimensions: output2WrongShape});
 
     assert_throws_js(TypeError, () => mlContext.dispatch(mlGraph, inputs, {
       'output1': outputs['output1'],
-      'output2': outputBuffer2,
+      'output2': outputTensor2,
     }));
   }, `${testName} / invalid shape`);
 
   promise_test(async () => {
-    // Control case, valid buffers.
+    // Control case, valid tensors.
     mlContext.dispatch(mlGraph, inputs, outputs);
 
     // Inputs are a different data type.
@@ -614,7 +613,7 @@ const testDispatchWebNNBuffer = (testName) => {
         TypeError,
         () => mlContext.dispatch(
             mlGraph, {
-              'lhs': mlContext.createBuffer({
+              'lhs': mlContext.createTensor({
                 dataType: inputWrongDataType,
                 dimensions: inputs['lhs'].shape
               }),
@@ -627,7 +626,7 @@ const testDispatchWebNNBuffer = (testName) => {
         () => mlContext.dispatch(
             mlGraph, {
               'lhs': inputs['lhs'],
-              'rhs': mlContext.createBuffer({
+              'rhs': mlContext.createTensor({
                 dataType: inputWrongDataType,
                 dimensions: inputs['rhs'].shape
               }),
@@ -638,20 +637,20 @@ const testDispatchWebNNBuffer = (testName) => {
     const outputWrongDataType = 'int32';
     assert_not_equals(outputs['output1'].dataType, outputWrongDataType);
     assert_not_equals(outputs['output2'].dataType, outputWrongDataType);
-    const outputBuffer1 = await mlContext.createBuffer(
+    const outputTensor1 = await mlContext.createTensor(
         {dataType: outputWrongDataType, dimensions: outputs['output1'].shape});
 
     assert_throws_js(TypeError, () => mlContext.dispatch(mlGraph, inputs, {
-      'output1': outputBuffer1,
+      'output1': outputTensor1,
       'output2': outputs['output2'],
     }));
 
-    const outputBuffer2 = await mlContext.createBuffer(
+    const outputTensor2 = await mlContext.createTensor(
         {dataType: outputWrongDataType, dimensions: outputs['output2'].shape});
 
     assert_throws_js(TypeError, () => mlContext.dispatch(mlGraph, inputs, {
       'output1': outputs['output1'],
-      'output2': outputBuffer2,
+      'output2': outputTensor2,
     }));
   }, `${testName} / invalid data type`);
 
@@ -702,15 +701,15 @@ const testDispatchWebNNBuffer = (testName) => {
             outputs));
 
     // Too many named inputs is invalid.
-    const anotherRhsBuffer =
-        await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs']));
+    const anotherRhsTensor =
+        await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs']));
     assert_throws_js(
         TypeError,
         () => mlContext.dispatch(
             mlGraph, {
               'lhs': inputs['lhs'],
               'rhs': inputs['rhs'],
-              'aDifferentInputName': anotherRhsBuffer,
+              'aDifferentInputName': anotherRhsTensor,
             },
             outputs));
 
@@ -720,26 +719,26 @@ const testDispatchWebNNBuffer = (testName) => {
     }));
 
     // Too many named outputs is invalid.
-    const anotherOutputBuffer2 = await mlContext.createBuffer(
-        getDescriptorFromBuffer(outputs['output2']));
+    const anotherOutputTensor2 = await mlContext.createTensor(
+        getDescriptorFromTensor(outputs['output2']));
     assert_throws_js(TypeError, () => mlContext.dispatch(mlGraph, inputs, {
       'output1': outputs['output1'],
       'output2': outputs['output2'],
-      'aDifferentOutputName': anotherOutputBuffer2,
+      'aDifferentOutputName': anotherOutputTensor2,
     }));
   }, `${testName} / invalid_name`);
 
   promise_test(async () => {
-    // Control case, valid buffers.
+    // Control case, valid tensors.
     mlContext.dispatch(mlGraph, inputs, outputs);
 
-    // Same buffer used as outputs more than once is invalid.
+    // Same tensor used as outputs more than once is invalid.
     assert_throws_js(TypeError, () => mlContext.dispatch(mlGraph, inputs, {
       'output1': outputs['output1'],
       'output2': outputs['output1'],
     }));
 
-    // Same buffer used as input and output is invalid.
+    // Same tensor used as input and output is invalid.
     assert_throws_js(TypeError, () => mlContext.dispatch(mlGraph, inputs, {
       'output1': inputs['lhs'],
       'output2': outputs['output2'],
@@ -754,7 +753,7 @@ const testDispatchWebNNBuffer = (testName) => {
             },
             outputs));
 
-    // Buffer that does not exist is invalid.
+    // Tensor that does not exist is invalid.
     assert_throws_js(
         TypeError,
         () => mlContext.dispatch(
@@ -768,35 +767,35 @@ const testDispatchWebNNBuffer = (testName) => {
       'output1': undefined,
       'output2': outputs['output2'],
     }));
-  }, `${testName} / invalid_buffer`);
+  }, `${testName} / invalid_tensor`);
 
   promise_test(async () => {
     const dispatchInputs = {
       'lhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs'])),
       'rhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs'])),
     };
 
     const dispatch1Outputs = {
-      'output1': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1'])),
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1'])),
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     };
 
     const dispatch2Outputs = {
-      'output1': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1'])),
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1'])),
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     };
 
     // Initialize inputs
     const inputData =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(1.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], inputData);
-    mlContext.writeBuffer(dispatchInputs['rhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['lhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['rhs'], inputData);
 
     // Output_1 = LHS + RHS = 1 + 1 = 2
     mlContext.dispatch(mlGraph, dispatchInputs, dispatch1Outputs);
@@ -804,19 +803,19 @@ const testDispatchWebNNBuffer = (testName) => {
     // Output_2 = LHS + RHS = 1 + 1 = 2
     mlContext.dispatch(mlGraph, dispatchInputs, dispatch2Outputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatch1Outputs['output1'],
         new Float32Array(sizeOfShape(shape)).fill(2.0));
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatch1Outputs['output2'],
         new Float32Array(sizeOfShape(shape)).fill(2.0));
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatch2Outputs['output1'],
         new Float32Array(sizeOfShape(shape)).fill(2.0));
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatch2Outputs['output2'],
         new Float32Array(sizeOfShape(shape)).fill(2.0));
   }, `${testName} / same_inputs`);
@@ -824,35 +823,35 @@ const testDispatchWebNNBuffer = (testName) => {
   promise_test(async () => {
     const dispatch1Inputs = {
       'lhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs'])),
       'rhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs'])),
     };
 
     const dispatch2Inputs = {
       'lhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs'])),
       'rhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs'])),
     };
 
     const dispatchOutputs = {
-      'output1': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1'])),
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1'])),
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     };
 
     // Initialize inputs
     const input1Data =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(1.0);
-    mlContext.writeBuffer(dispatch1Inputs['lhs'], input1Data);
-    mlContext.writeBuffer(dispatch1Inputs['rhs'], input1Data);
+    mlContext.writeTensor(dispatch1Inputs['lhs'], input1Data);
+    mlContext.writeTensor(dispatch1Inputs['rhs'], input1Data);
 
     const input2Data =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(2.0);
-    mlContext.writeBuffer(dispatch2Inputs['lhs'], input2Data);
-    mlContext.writeBuffer(dispatch2Inputs['rhs'], input2Data);
+    mlContext.writeTensor(dispatch2Inputs['lhs'], input2Data);
+    mlContext.writeTensor(dispatch2Inputs['rhs'], input2Data);
 
     // Output = LHS_1 + RHS_1 = 1 + 1 = 2
     mlContext.dispatch(mlGraph, dispatch1Inputs, dispatchOutputs);
@@ -860,11 +859,11 @@ const testDispatchWebNNBuffer = (testName) => {
     // Output = LHS_2 + RHS_2 = 2 + 2 = 4
     mlContext.dispatch(mlGraph, dispatch2Inputs, dispatchOutputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output1'],
         new Float32Array(sizeOfShape(shape)).fill(4.0));
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output2'],
         new Float32Array(sizeOfShape(shape)).fill(4.0));
   }, `${testName} / same_outputs`);
@@ -872,33 +871,33 @@ const testDispatchWebNNBuffer = (testName) => {
   promise_test(async () => {
     const dispatchInputs = {
       'lhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs'])),
       'rhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs'])),
     };
 
     const dispatchOutputs = {
-      'output1': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1'])),
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1'])),
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     };
 
     // Initialize inputs
     const inputData =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(1.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], inputData);
-    mlContext.writeBuffer(dispatchInputs['rhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['lhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['rhs'], inputData);
 
     // Output = LHS + RHS = 1 + 1 = 2
     mlContext.dispatch(mlGraph, dispatchInputs, dispatchOutputs);
     mlContext.dispatch(mlGraph, dispatchInputs, dispatchOutputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output1'],
         new Float32Array(sizeOfShape(shape)).fill(2.0));
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output2'],
         new Float32Array(sizeOfShape(shape)).fill(2.0));
   }, `${testName} / same_inputs_and_outputs`);
@@ -906,30 +905,30 @@ const testDispatchWebNNBuffer = (testName) => {
   promise_test(async () => {
     const dispatchInputs = {
       'lhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs'])),
       'rhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs'])),
     };
 
     const dispatch1Outputs = {
-      'output1': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1'])),
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1'])),
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     };
 
     const dispatch2Outputs = {
-      'output1': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1'])),
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1'])),
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     };
 
     // Initialize inputs
     const inputData =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(1.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], inputData);
-    mlContext.writeBuffer(dispatchInputs['rhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['lhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['rhs'], inputData);
 
     // Output_1 = LHS + RHS = 1 + 1 = 2
     mlContext.dispatch(mlGraph, dispatchInputs, dispatch1Outputs);
@@ -950,11 +949,11 @@ const testDispatchWebNNBuffer = (testName) => {
         },
         dispatch1Outputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatch1Outputs['output1'],
         new Float32Array(sizeOfShape(shape)).fill(8));
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatch1Outputs['output2'],
         new Float32Array(sizeOfShape(shape)).fill(8));
   }, `${testName} / outputs_as_inputs`);
@@ -968,203 +967,203 @@ const testDispatchWebNNBuffer = (testName) => {
     const graph =
         await builder.build({'output': builder.sub(lhsOperand, rhsOperand)});
 
-    const lhsBuffer =
-        await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs']));
-    const rhsBuffer =
-        await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs']));
+    const lhsTensor =
+        await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs']));
+    const rhsTensor =
+        await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs']));
 
     const dispatchOutputs = {
-      'output': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1']))
+      'output': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1']))
     };
 
     // Initialize inputs
-    mlContext.writeBuffer(
-        lhsBuffer, new TypedArrayDict['float32'](sizeOfShape(shape)).fill(5.0));
-    mlContext.writeBuffer(
-        rhsBuffer, new TypedArrayDict['float32'](sizeOfShape(shape)).fill(3.0));
+    mlContext.writeTensor(
+        lhsTensor, new TypedArrayDict['float32'](sizeOfShape(shape)).fill(5.0));
+    mlContext.writeTensor(
+        rhsTensor, new TypedArrayDict['float32'](sizeOfShape(shape)).fill(3.0));
 
     // Output = LHS - RHS = 5 - 3 = 2
     mlContext.dispatch(
         graph, {
-          'lhs': lhsBuffer,
-          'rhs': rhsBuffer,
+          'lhs': lhsTensor,
+          'rhs': rhsTensor,
         },
         dispatchOutputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output'],
         new Float32Array(sizeOfShape(shape)).fill(2));
 
     // Output = RHS - LHS = 3 - 5 = -2
     mlContext.dispatch(
         graph, {
-          'lhs': rhsBuffer,
-          'rhs': lhsBuffer,
+          'lhs': rhsTensor,
+          'rhs': lhsTensor,
         },
         dispatchOutputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output'],
         new Float32Array(sizeOfShape(shape)).fill(-2));
-  }, `${testName} / same name diff input buffers`);
+  }, `${testName} / same name diff input tensors`);
 
   promise_test(async () => {
     const dispatchInputs = {
       'lhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs'])),
       'rhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs'])),
     };
 
-    const outputBuffer1 = await mlContext.createBuffer(
-        getDescriptorFromBuffer(outputs['output1']));
-    const outputBuffer2 = await mlContext.createBuffer(
-        getDescriptorFromBuffer(outputs['output2']));
+    const outputTensor1 = await mlContext.createTensor(
+        getDescriptorFromTensor(outputs['output1']));
+    const outputTensor2 = await mlContext.createTensor(
+        getDescriptorFromTensor(outputs['output2']));
 
     // Initialize inputs
     const inputData1 =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(1.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], inputData1);
-    mlContext.writeBuffer(dispatchInputs['rhs'], inputData1);
+    mlContext.writeTensor(dispatchInputs['lhs'], inputData1);
+    mlContext.writeTensor(dispatchInputs['rhs'], inputData1);
 
     // Output = LHS + RHS = 1 + 1 = 2
     mlContext.dispatch(mlGraph, dispatchInputs, {
-      'output1': outputBuffer1,
-      'output2': outputBuffer2,
+      'output1': outputTensor1,
+      'output2': outputTensor2,
     });
 
     // Output = LHS + RHS = 2 + 2 = 4
     const inputData2 =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(2.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], inputData2);
-    mlContext.writeBuffer(dispatchInputs['rhs'], inputData2);
+    mlContext.writeTensor(dispatchInputs['lhs'], inputData2);
+    mlContext.writeTensor(dispatchInputs['rhs'], inputData2);
 
     mlContext.dispatch(mlGraph, dispatchInputs, {
-      'output1': outputBuffer1,
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': outputTensor1,
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     });
 
     // Ensure the last dispatch() did not modify the original second output
-    // buffer.
-    await assert_buffer_data_equals(
-        mlContext, outputBuffer2, new Float32Array(sizeOfShape(shape)).fill(2));
-  }, `${testName} / same name diff outputs buffers`);
+    // tensor.
+    await assert_tensor_data_equals(
+        mlContext, outputTensor2, new Float32Array(sizeOfShape(shape)).fill(2));
+  }, `${testName} / same name diff outputs tensors`);
 
   promise_test(async () => {
     const dispatchInputs = {
       'lhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs'])),
       'rhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs'])),
     };
 
     const dispatchOutputs = {
-      'output1': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1'])),
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1'])),
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     };
 
     // Initialize inputs
     const inputData =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(1.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], inputData);
-    mlContext.writeBuffer(dispatchInputs['rhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['lhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['rhs'], inputData);
 
     // Output = LHS + RHS = 1 + 1 = 2
     mlContext.dispatch(mlGraph, dispatchInputs, dispatchOutputs);
 
-    // Check destroyed input buffers cannot be re-used in subsequent dispatches.
+    // Check destroyed input tensors cannot be re-used in subsequent dispatches.
     dispatchInputs['lhs'].destroy();
     dispatchInputs['lhs'] =
-        await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs']));
+        await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs']));
 
     const newInputData =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(2.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], newInputData);
+    mlContext.writeTensor(dispatchInputs['lhs'], newInputData);
 
     // Output = LHS + RHS = 2 + 1 = 3
     mlContext.dispatch(mlGraph, dispatchInputs, dispatchOutputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output1'],
         new Float32Array(sizeOfShape(shape)).fill(3));
 
     dispatchInputs['rhs'].destroy();
     dispatchInputs['rhs'] =
-        await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs']));
-    mlContext.writeBuffer(dispatchInputs['rhs'], newInputData);
+        await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs']));
+    mlContext.writeTensor(dispatchInputs['rhs'], newInputData);
 
     // Output = LHS + RHS = 2 + 2 = 4
     mlContext.dispatch(mlGraph, dispatchInputs, dispatchOutputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output1'],
         new Float32Array(sizeOfShape(shape)).fill(4));
-  }, `${testName} / same name diff inputs buffers destroy`);
+  }, `${testName} / same name diff inputs tensors destroy`);
 
   promise_test(async () => {
     const dispatchInputs = {
       'lhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['lhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['lhs'])),
       'rhs':
-          await mlContext.createBuffer(getDescriptorFromBuffer(inputs['rhs'])),
+          await mlContext.createTensor(getDescriptorFromTensor(inputs['rhs'])),
     };
 
     const dispatchOutputs = {
-      'output1': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output1'])),
-      'output2': await mlContext.createBuffer(
-          getDescriptorFromBuffer(outputs['output2'])),
+      'output1': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output1'])),
+      'output2': await mlContext.createTensor(
+          getDescriptorFromTensor(outputs['output2'])),
     };
 
     // Initialize inputs
     const inputData =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(1.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], inputData);
-    mlContext.writeBuffer(dispatchInputs['rhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['lhs'], inputData);
+    mlContext.writeTensor(dispatchInputs['rhs'], inputData);
 
     // Output = LHS + RHS = 1 + 1 = 2
     mlContext.dispatch(mlGraph, dispatchInputs, dispatchOutputs);
 
-    // Check destroyed output buffers cannot be re-used in subsequent
+    // Check destroyed output tensors cannot be re-used in subsequent
     // dispatches.
     dispatchOutputs['output1'].destroy();
-    dispatchOutputs['output1'] = await mlContext.createBuffer(
-        getDescriptorFromBuffer(outputs['output1']));
+    dispatchOutputs['output1'] = await mlContext.createTensor(
+        getDescriptorFromTensor(outputs['output1']));
 
     const newInputData =
         new TypedArrayDict['float32'](sizeOfShape(shape)).fill(2.0);
-    mlContext.writeBuffer(dispatchInputs['lhs'], newInputData);
+    mlContext.writeTensor(dispatchInputs['lhs'], newInputData);
 
     // Output = LHS + RHS = 2 + 1 = 3
     mlContext.dispatch(mlGraph, dispatchInputs, dispatchOutputs);
 
-    await assert_buffer_data_equals(
+    await assert_tensor_data_equals(
         mlContext, dispatchOutputs['output1'],
         new Float32Array(sizeOfShape(shape)).fill(3));
-  }, `${testName} / same name diff outputs buffers destroy`);
+  }, `${testName} / same name diff outputs tensors destroy`);
 };
 
 if (navigator.ml) {
-  testCreateWebNNBuffer('create', {dataType: 'float16', dimensions: [2, 3]});
-  testCreateWebNNBuffer('create', {dataType: 'float32', dimensions: [1, 5]});
-  testCreateWebNNBuffer('create', {dataType: 'int32', dimensions: [4]});
-  testCreateWebNNBuffer('create', {dataType: 'uint8', dimensions: [3, 2, 4]});
+  testCreateTensor('create', {dataType: 'float16', dimensions: [2, 3]});
+  testCreateTensor('create', {dataType: 'float32', dimensions: [1, 5]});
+  testCreateTensor('create', {dataType: 'int32', dimensions: [4]});
+  testCreateTensor('create', {dataType: 'uint8', dimensions: [3, 2, 4]});
 
-  testCreateWebNNBufferFails(
+  testCreateTensorFails(
       'createFailsEmptyDimension', {dataType: 'int32', dimensions: [2, 0, 3]});
-  testCreateWebNNBufferFails('createFailsTooLarge', {
+  testCreateTensorFails('createFailsTooLarge', {
     dataType: 'int32',
     dimensions: [kMaxUnsignedLong, kMaxUnsignedLong, kMaxUnsignedLong]
   });
 
-  testDestroyWebNNBuffer('destroyTwice');
-  testReadWebNNBuffer('read');
-  testWriteWebNNBuffer('write');
-  testDispatchWebNNBuffer('dispatch');
+  testDestroyTensor('destroyTwice');
+  testReadTensor('read');
+  testWriteTensor('write');
+  testDispatchTensor('dispatch');
 } else {
   test(() => assert_implements(navigator.ml, 'missing navigator.ml'));
 }
diff --git a/tests/wpt/tests/webnn/resources/utils.js b/tests/wpt/tests/webnn/resources/utils.js
index e4a1e898598..c6b6010b3b0 100644
--- a/tests/wpt/tests/webnn/resources/utils.js
+++ b/tests/wpt/tests/webnn/resources/utils.js
@@ -207,6 +207,14 @@ const assert_array_approx_equals_ulp = (actual, expected, nulp, dataType, descri
       } else if (dataType === 'int64') {
         actualBitwise = actual[i];
         expectedBitwise = BigInt(expected[i]);
+      } else if (dataType === 'uint64') {
+        actualBitwise = actual[i];
+        expectedBitwise = BigUint64Array(expected[i]);
+      } else if (
+          dataType === 'int8' || dataType === 'uint8' || dataType === 'int32' ||
+          dataType === 'uint32') {
+        actualBitwise = actual[i];
+        expectedBitwise = expected[i];
       }
       distance = actualBitwise - expectedBitwise;
       distance = distance >= 0 ? distance : -distance;
diff --git a/tests/wpt/tests/webnn/validation_tests/cumulativeSum.https.any.js b/tests/wpt/tests/webnn/validation_tests/cumulativeSum.https.any.js
new file mode 100644
index 00000000000..65eef7ed89d
--- /dev/null
+++ b/tests/wpt/tests/webnn/validation_tests/cumulativeSum.https.any.js
@@ -0,0 +1,81 @@
+// META: title=validation tests for WebNN API relu operation
+// META: global=window,dedicatedworker
+// META: variant=?cpu
+// META: variant=?gpu
+// META: variant=?npu
+// META: script=../resources/utils_validation.js
+
+'use strict';
+
+const tests = [
+  {
+    name: '[cumulativeSum] Test with default options',
+    input: {dataType: 'float32', dimensions: [3, 2, 5]},
+    axis: 0,
+    output: {dataType: 'float32', dimensions: [3, 2, 5]}
+  },
+  {
+    name: '[cumulativeSum] Test with axis=1',
+    input: {dataType: 'float32', dimensions: [3, 2, 5]},
+    axis: 1,
+    output: {dataType: 'float32', dimensions: [3, 2, 5]}
+  },
+  {
+    name: '[cumulativeSum] Test with exclusive=true',
+    input: {dataType: 'float32', dimensions: [3, 2, 5]},
+    axis: 1,
+    options: {exclusive: true},
+    output: {dataType: 'float32', dimensions: [3, 2, 5]}
+  },
+  {
+    name: '[cumulativeSum] Test with reversed=true',
+    input: {dataType: 'float32', dimensions: [3, 2, 5]},
+    axis: 1,
+    options: {reversed: true},
+    output: {dataType: 'float32', dimensions: [3, 2, 5]}
+  },
+  {
+    name: '[cumulativeSum] Throw if input is a scalar',
+    input: {dataType: 'float32', dimensions: []},
+    axis: 0
+  },
+  {
+    name: '[cumulativeSum] Throw if axis is invalid',
+    input: {dataType: 'float32', dimensions: [1, 2, 3]},
+    axis: 3
+  },
+]
+
+tests.forEach(
+    test => promise_test(async t => {
+      const builder = new MLGraphBuilder(context);
+      const input = builder.input('input', test.input);
+
+      const options = {};
+      if (test.options) {
+        if (test.options.exclusive) {
+          options.exclusive = test.options.exclusive;
+        }
+        if (test.options.reversed) {
+          options.reversed = test.options.reversed;
+        }
+      }
+      if (test.output) {
+        const output = builder.cumulativeSum(input, test.axis, options);
+        assert_equals(output.dataType(), test.output.dataType);
+        assert_array_equals(output.shape(), test.output.dimensions);
+      } else {
+        const label = 'cumulative_sum';
+        options.label = label;
+        const regexp = new RegExp('\\[' + label + '\\]');
+        assert_throws_with_label(
+            () => builder.cumulativeSum(input, test.axis, options), regexp);
+      }
+    }, test.name));
+
+multi_builder_test(async (t, builder, otherBuilder) => {
+  const inputFromOtherBuilder =
+      otherBuilder.input('input', {dataType: 'float32', dimensions: [3, 2, 5]});
+  assert_throws_js(
+      TypeError, () => builder.cumulativeSum(inputFromOtherBuilder, 0));
+}, '[cumulativeSum] throw if input is from another builder');
diff --git a/tests/wpt/tests/webnn/validation_tests/destroyContext.https.any.js b/tests/wpt/tests/webnn/validation_tests/destroyContext.https.any.js
index d50725ac4b7..4ec31033a6d 100644
--- a/tests/wpt/tests/webnn/validation_tests/destroyContext.https.any.js
+++ b/tests/wpt/tests/webnn/validation_tests/destroyContext.https.any.js
@@ -85,16 +85,16 @@ promise_test(async t => {
   const graph =
       await builder.build({'output': builder.sub(lhsOperand, rhsOperand)});
 
-  const lhsBuffer = await context.createBuffer(operandType);
-  const rhsBuffer = await context.createBuffer(operandType);
+  const lhsTensor = await context.createTensor(operandType);
+  const rhsTensor = await context.createTensor(operandType);
 
-  const dispatchOutputs = {'output': await context.createBuffer(operandType)};
+  const dispatchOutputs = {'output': await context.createTensor(operandType)};
   context.destroy();
   assert_throws_dom('InvalidStateError', () => {
     context.dispatch(
         graph, {
-          'lhs': lhsBuffer,
-          'rhs': rhsBuffer,
+          'lhs': lhsTensor,
+          'rhs': rhsTensor,
         },
         dispatchOutputs);
   });
@@ -109,14 +109,14 @@ promise_test(async t => {
   const graph =
       await builder.build({'output': builder.sub(lhsOperand, rhsOperand)});
 
-  const lhsBuffer = await context.createBuffer(operandType);
-  const rhsBuffer = await context.createBuffer(operandType);
+  const lhsTensor = await context.createTensor(operandType);
+  const rhsTensor = await context.createTensor(operandType);
 
-  const dispatchOutputs = {'output': await context.createBuffer(operandType)};
+  const dispatchOutputs = {'output': await context.createTensor(operandType)};
   context.dispatch(
       graph, {
-        'lhs': lhsBuffer,
-        'rhs': rhsBuffer,
+        'lhs': lhsTensor,
+        'rhs': rhsTensor,
       },
       dispatchOutputs);
   context.destroy();
@@ -127,45 +127,45 @@ promise_test(async t => {
   context.destroy();
   promise_rejects_dom(
       t, 'InvalidStateError',
-      context.createBuffer({dataType: 'float32', dimensions: [1]}));
-}, 'Destroyed context can not create buffer.');
+      context.createTensor({dataType: 'float32', dimensions: [1]}));
+}, 'Destroyed context can not create tensor.');
 
 promise_test(async t => {
   const context = await navigator.ml.createContext(contextOptions);
-  const buffer = await context.createBuffer({
+  const tensor = await context.createTensor({
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.READ,
   });
   context.destroy();
-  promise_rejects_dom(t, 'InvalidStateError', context.readBuffer(buffer));
-}, 'Destroyed context can not read buffer.');
+  promise_rejects_dom(t, 'InvalidStateError', context.readTensor(tensor));
+}, 'Destroyed context can not read tensor.');
 
 promise_test(async t => {
   const context = await navigator.ml.createContext(contextOptions);
-  const buffer = await context.createBuffer({
+  const tensor = await context.createTensor({
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.READ,
   });
-  let promise = context.readBuffer(buffer);
+  let promise = context.readTensor(tensor);
   context.destroy();
   promise_rejects_dom(t, 'InvalidStateError', promise);
-}, 'Pending promise of readbuffer() will be rejected immediately when context is destroyed.');
+}, 'Pending promise of readtensor() will be rejected immediately when context is destroyed.');
 
 promise_test(async t => {
   const context = await navigator.ml.createContext(contextOptions);
   // Destroying another context doesn't impact the first context.
   const another_context = await navigator.ml.createContext(contextOptions);
   another_context.destroy();
-  const buffer = await context.createBuffer({
+  const tensor = await context.createTensor({
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO,
+    usage: MLTensorUsage.WRITE,
   });
   let arrayBuffer = new ArrayBuffer(4);
   context.destroy();
   assert_throws_dom('InvalidStateError', () => {
-    context.writeBuffer(buffer, new Uint8Array(arrayBuffer));
+    context.writeTensor(tensor, new Uint8Array(arrayBuffer));
   });
-}, 'Destroyed context can not write buffer.');
+}, 'Destroyed context can not write tensor.');
diff --git a/tests/wpt/tests/webnn/validation_tests/destroyGraph.https.any.js b/tests/wpt/tests/webnn/validation_tests/destroyGraph.https.any.js
index 7dfadfe3f8e..9fd3a9e1ff7 100644
--- a/tests/wpt/tests/webnn/validation_tests/destroyGraph.https.any.js
+++ b/tests/wpt/tests/webnn/validation_tests/destroyGraph.https.any.js
@@ -84,16 +84,16 @@ promise_test(async t => {
   const graph =
       await builder.build({'output': builder.mul(lhsOperand, rhsOperand)});
 
-  const lhsBuffer = await context.createBuffer(operandType);
-  const rhsBuffer = await context.createBuffer(operandType);
-  const dispatchOutputs = {'output': await context.createBuffer(operandType)};
+  const lhsTensor = await context.createTensor(operandType);
+  const rhsTensor = await context.createTensor(operandType);
+  const dispatchOutputs = {'output': await context.createTensor(operandType)};
 
   graph.destroy();
   assert_throws_dom('InvalidStateError', () => {
     context.dispatch(
         graph, {
-          'lhs': lhsBuffer,
-          'rhs': rhsBuffer,
+          'lhs': lhsTensor,
+          'rhs': rhsTensor,
         },
         dispatchOutputs);
   });
@@ -107,35 +107,35 @@ promise_test(async t => {
   const graph =
       await builder.build({'output': builder.mul(lhsOperand, rhsOperand)});
 
-  const lhsBuffer = await context.createBuffer({
+  const lhsTensor = await context.createTensor({
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO,
+    usage: MLTensorUsage.WRITE,
   });
-  const rhsBuffer = await context.createBuffer({
+  const rhsTensor = await context.createTensor({
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.WRITE_TO,
+    usage: MLTensorUsage.WRITE,
   });
-  const outputBuffer = await context.createBuffer({
+  const outputTensor = await context.createTensor({
     dataType: 'float32',
     dimensions: [1],
-    usage: MLTensorUsage.READ_FROM,
+    usage: MLTensorUsage.READ,
   });
   // Initialize inputs
   const inputData = new Float32Array(1).fill(2.0);
-  context.writeBuffer(lhsBuffer, inputData);
-  context.writeBuffer(rhsBuffer, inputData);
+  context.writeTensor(lhsTensor, inputData);
+  context.writeTensor(rhsTensor, inputData);
   context.dispatch(
       graph, {
-        'lhs': lhsBuffer,
-        'rhs': rhsBuffer,
+        'lhs': lhsTensor,
+        'rhs': rhsTensor,
       },
-      {'output': outputBuffer});
+      {'output': outputTensor});
 
   graph.destroy();
-  const outputData = await context.readBuffer(outputBuffer);
+  const outputData = await context.readTensor(outputTensor);
   assert_array_equals(
       new Float32Array(outputData), [4],
-      'Read buffer data equals expected data.');
-}, 'Destroying graph after dispatch() and before readBuffer() is OK.');
+      'Read tensor data equals expected data.');
+}, 'Destroying graph after dispatch() and before readTensor() is OK.');
diff --git a/tests/wpt/tests/webnn/validation_tests/scatterND.https.any.js b/tests/wpt/tests/webnn/validation_tests/scatterND.https.any.js
new file mode 100644
index 00000000000..18fcb40e892
--- /dev/null
+++ b/tests/wpt/tests/webnn/validation_tests/scatterND.https.any.js
@@ -0,0 +1,102 @@
+// META: title=validation tests for WebNN API scatterND operation
+// META: global=window,dedicatedworker
+// META: variant=?cpu
+// META: variant=?gpu
+// META: variant=?npu
+// META: script=../resources/utils_validation.js
+
+'use strict';
+
+const tests = [
+  {
+    name: '[scatterND] Test scatterND with valid tensors',
+    input: {dataType: 'float32', dimensions: [4, 4, 4]},
+    indices: {dataType: 'int32', dimensions: [2, 1]},
+    updates: {dataType: 'float32', dimensions: [2, 4, 4]},
+    output: {dataType: 'float32', dimensions: [4, 4, 4]}
+  },
+  {
+    name:
+        '[scatterND] Throw if updates tensor data type is not the same as input data type',
+    input: {dataType: 'float32', dimensions: [4, 4, 4]},
+    indices: {dataType: 'int32', dimensions: [2, 1]},
+    updates: {dataType: 'float16', dimensions: [2, 4, 4]},
+  },
+  {
+    name: '[scatterND] Throw if input is a scalar',
+    input: {dataType: 'float32', dimensions: []},
+    indices: {dataType: 'int32', dimensions: [2, 1]},
+    updates: {dataType: 'float32', dimensions: [2, 4, 4]},
+  },
+  {
+    name: '[scatterND] Throw if indices is a scalar',
+    input: {dataType: 'float32', dimensions: [4, 4, 4]},
+    indices: {dataType: 'int32', dimensions: []},
+    updates: {dataType: 'float32', dimensions: [2, 4, 4]},
+  },
+  {
+    name:
+        '[scatterND] Throw if the size of last dimension of indices tensor is greater than input rank',
+    input: {dataType: 'float32', dimensions: [4, 4, 4]},
+    indices: {dataType: 'int32', dimensions: [2, 4]},
+    updates: {dataType: 'float32', dimensions: [2, 4, 4]},
+  },
+  {
+    name: '[scatterND] Throw if updates tensor shape is invalid.',
+    input: {dataType: 'float32', dimensions: [4, 4, 4]},
+    indices: {dataType: 'int32', dimensions: [2, 1]},
+    // Updates tensor shape should be [2, 4, 4].
+    updates: {dataType: 'float32', dimensions: [2, 3, 4]},
+  }
+];
+
+tests.forEach(test => promise_test(async t => {
+                const builder = new MLGraphBuilder(context);
+                const input = builder.input('input', test.input);
+                const indices = builder.input('indices', test.indices);
+                const updates = builder.input('updates', test.updates);
+
+                if (test.output) {
+                  const output = builder.scatterND(input, indices, updates);
+                  assert_equals(output.dataType(), test.output.dataType);
+                  assert_array_equals(output.shape(), test.output.dimensions);
+                } else {
+                  const label = 'a_scatter_nd'
+                  const options = {label};
+                  const regexp = new RegExp('\\[' + label + '\\]');
+                  assert_throws_with_label(
+                      () => builder.scatterND(input, indices, updates, options),
+                      regexp);
+                }
+              }, test.name));
+
+multi_builder_test(async (t, builder, otherBuilder) => {
+  const input =
+      otherBuilder.input('input', {dataType: 'float32', dimensions: [8]});
+  const indices =
+      builder.input('indices', {dataType: 'int32', dimensions: [4, 1]});
+  const updates =
+      builder.input('indices', {dataType: 'int32', dimensions: [4]});
+
+  assert_throws_js(TypeError, () => builder.scatterND(input, indices, updates));
+}, '[scatterND] Throw if input is from another builder');
+
+multi_builder_test(async (t, builder, otherBuilder) => {
+  const input = builder.input('input', {dataType: 'float32', dimensions: [8]});
+  const indices =
+      otherBuilder.input('indices', {dataType: 'int32', dimensions: [4, 1]});
+  const updates =
+      builder.input('indices', {dataType: 'int32', dimensions: [4]});
+
+  assert_throws_js(TypeError, () => builder.scatterND(input, indices, updates));
+}, '[scatterND] Throw if indcies is from another builder');
+
+multi_builder_test(async (t, builder, otherBuilder) => {
+  const input = builder.input('input', {dataType: 'float32', dimensions: [8]});
+  const indices =
+      builder.input('indices', {dataType: 'int32', dimensions: [4, 1]});
+  const updates =
+      otherBuilder.input('indices', {dataType: 'int32', dimensions: [4]});
+
+  assert_throws_js(TypeError, () => builder.scatterND(input, indices, updates));
+}, '[scatterND] Throw if updates is from another builder');
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-different-order-worker.js b/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-different-order-worker.js
deleted file mode 100644
index 0de9796b068..00000000000
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-different-order-worker.js
+++ /dev/null
@@ -1,44 +0,0 @@
-let secondFrame;
-let secondTimestamp;
-
-onrtctransform = (event) => {
-    const transformer = event.transformer;
-
-    transformer.reader = transformer.readable.getReader();
-    transformer.writer = transformer.writable.getWriter();
-    let countRead = 0;
-
-    async function process(transformer)
-    {
-        const chunk = await transformer.reader.read();
-        countRead++;
-        if (chunk.done)
-            return;
-        if (transformer.options.name === 'sender') {
-            if(countRead == 1){
-                transformer.writer.write(chunk.value);
-            } else if(countRead == 2){
-                secondFrame = chunk.value;
-                secondTimestamp = chunk.value.getMetadata().rtpTimestamp;
-            } else if(countRead == 3){
-                // Write third frame before second frame.
-                transformer.writer.write(chunk.value);
-                transformer.writer.write(secondFrame);
-            } else if(countRead <= 10){
-                transformer.writer.write(chunk.value);
-            }
-        } else  { // receiver
-            if (chunk.value.getMetadata().rtpTimestamp == secondTimestamp) {
-                self.postMessage("received an unexpected frame");
-                return;
-            } else if(countRead == 9){
-                self.postMessage("got expected");
-                return;
-            }
-            transformer.writer.write(chunk.value);
-        }
-        await process(transformer);
-    }
-    process(transformer);
-};
-self.postMessage("registered");
\ No newline at end of file
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-different-owner-worker.js b/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-different-owner-worker.js
deleted file mode 100644
index e8ded2ec658..00000000000
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-different-owner-worker.js
+++ /dev/null
@@ -1,46 +0,0 @@
-importScripts("helper.js");
-
-const modification = 1;
-
-let frameSender1;
-let isWaitingForFirstFrameSender1 = true;
-let isWaitingForFirstFrameSender2 = true;
-let frameSender2RtpTimestamp;
-
-onrtctransform = (event) => {
-    const transformer = event.transformer;
-
-    transformer.reader = transformer.readable.getReader();
-    transformer.writer = transformer.writable.getWriter();
-    async function process(transformer)
-    {
-        const chunk = await transformer.reader.read();
-        if (chunk.done)
-            return;
-        if (transformer.options.name === 'sender1' && isWaitingForFirstFrameSender1) {
-            isWaitingForFirstFrameSender1 = false;
-            frameSender1 = chunk.value;
-        } else if(transformer.options.name == "sender2" && isWaitingForFirstFrameSender2){
-            isWaitingForFirstFrameSender2 = false;
-            transformer.writer.write(frameSender1);
-            frameSender2RtpTimestamp = chunk.value.getMetadata().rtpTimestamp;
-            chunk.value.data = appendToBuffer(chunk.value.data, modification);
-            transformer.writer.write(chunk.value);
-        } else if(transformer.options.name == "receiver2") {
-            const lastByte =
-                new Uint8Array(chunk.value.data)[chunk.value.data.byteLength - 1];
-            if (lastByte === modification && frameSender2RtpTimestamp == chunk.value.getMetadata().rtpTimestamp) {
-                self.postMessage("got expected");
-                return;
-            } else {
-                self.postMessage("unexpected value of lastByte: got " + lastByte +
-                    ", expected " + modification);
-                return;
-            }
-        }
-
-        await process(transformer);
-    }
-    process(transformer);
-};
-self.postMessage("registered");
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-worker.js b/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-worker.js
index a87b2f257ed..89e421ae9aa 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-worker.js
+++ b/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform-worker.js
@@ -1,7 +1,13 @@
-importScripts("helper.js");
-
 const modification = 1;
 
+function appendToBuffer(buffer, value) {
+    const result = new ArrayBuffer(buffer.byteLength + 1);
+    const byteResult = new Uint8Array(result);
+    byteResult.set(new Uint8Array(buffer), 0);
+    byteResult[buffer.byteLength] = value;
+    return result;
+}
+
 function ModifyAndWrite(chunk, transformer) {
     chunk.value.data = appendToBuffer(chunk.value.data, modification);
     transformer.writer.write(chunk.value);
diff --git a/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform.https.html b/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform.https.html
index 76aaced9bfc..c935644f0c6 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform.https.html
+++ b/tests/wpt/tests/webrtc-encoded-transform/RTCRtpScriptTransform-encoded-transform.https.html
@@ -156,160 +156,6 @@ promise_test(async (test) => {
 
 }, "Sender skips some frames and only writes one back. Receiver only receives that frame.");
 
-promise_test(async (test) => {
-    const worker = new Worker('RTCRtpScriptTransform-encoded-transform-different-owner-worker.js');
-    const data = await new Promise(resolve => worker.onmessage = (event) => resolve(event.data));
-    assert_equals(data, "registered");
-
-    await setMediaPermission("granted", ["camera"]);
-    const localStream = await navigator.mediaDevices.getUserMedia({video: true});
-
-    let sender1, receiver1, sender2, receiver2;
-    const senderTransform1 = new RTCRtpScriptTransform(worker, {name:'sender1'});
-    const receiverTransform1 = new RTCRtpScriptTransform(worker, {name:'receiver1'});
-    const senderTransform2 = new RTCRtpScriptTransform(worker, {name:'sender2'});
-    const receiverTransform2 = new RTCRtpScriptTransform(worker, {name:'receiver2'});
-
-    const remoteStream1 = await new Promise((resolve, reject) => {
-        createConnections(test, (firstConnection) => {
-            sender1 = firstConnection.addTrack(localStream.getVideoTracks()[0], localStream);
-            sender1.transform = senderTransform1;
-        }, (secondConnection) => {
-            secondConnection.ontrack = (trackEvent) => {
-                receiver1 = trackEvent.receiver;
-                receiver1.transform = receiverTransform1;
-                resolve(trackEvent.streams[0]);
-            };
-        });
-    });
-
-    const remoteStream2 = await new Promise((resolve, reject) => {
-        createConnections(test, (firstConnection) => {
-            sender2 = firstConnection.addTrack(localStream.getVideoTracks()[0], localStream);
-            sender2.transform = senderTransform2;
-        }, (secondConnection) => {
-            secondConnection.ontrack = (trackEvent) => {
-                receiver2 = trackEvent.receiver;
-                receiver2.transform = receiverTransform2;
-                resolve(trackEvent.streams[0]);
-            };
-        });
-    });
-
-    video.srcObject = remoteStream2;
-    const updatePromise = new Promise(resolve => worker.onmessage = (event) => resolve(event.data));
-    assert_equals(await updatePromise, "got expected");
-}, "The sender sends both a video frame it doesn't own and one it does. Receiver only gets the frame owned by the sender.");
-
-promise_test(async (test) => {
-    const worker = new Worker('RTCRtpScriptTransform-encoded-transform-different-owner-worker.js');
-    const data = await new Promise(resolve => worker.onmessage = (event) => resolve(event.data));
-    assert_equals(data, "registered");
-
-    await setMediaPermission("granted", ["microphone"]);
-    const localStream = await navigator.mediaDevices.getUserMedia({audio: true});
-
-    let sender1, receiver1, sender2, receiver2;
-    const senderTransform1 = new RTCRtpScriptTransform(worker, {name:'sender1'});
-    const receiverTransform1 = new RTCRtpScriptTransform(worker, {name:'receiver1'});
-    const senderTransform2 = new RTCRtpScriptTransform(worker, {name:'sender2'});
-    const receiverTransform2 = new RTCRtpScriptTransform(worker, {name:'receiver2'});
-
-    const remoteStream1 = await new Promise((resolve, reject) => {
-        createConnections(test, (firstConnection) => {
-            sender1 = firstConnection.addTrack(localStream.getAudioTracks()[0], localStream);
-            sender1.transform = senderTransform1;
-        }, (secondConnection) => {
-            secondConnection.ontrack = (trackEvent) => {
-                receiver1 = trackEvent.receiver;
-                receiver1.transform = receiverTransform1;
-                resolve(trackEvent.streams[0]);
-            };
-        });
-    });
-
-    const remoteStream2 = await new Promise((resolve, reject) => {
-        createConnections(test, (firstConnection) => {
-            sender2 = firstConnection.addTrack(localStream.getAudioTracks()[0], localStream);
-            sender2.transform = senderTransform2;
-        }, (secondConnection) => {
-            secondConnection.ontrack = (trackEvent) => {
-                receiver2 = trackEvent.receiver;
-                receiver2.transform = receiverTransform2;
-                resolve(trackEvent.streams[0]);
-            };
-        });
-    });
-
-    video.srcObject = remoteStream2;
-    const updatePromise = new Promise(resolve => worker.onmessage = (event) => resolve(event.data));
-    assert_equals(await updatePromise, "got expected");
-}, "The sender sends both an audio frame it doesn't own and one it does. Receiver only gets the frame owned by the sender.");
-
-promise_test(async (test) => {
-    const worker = new Worker('RTCRtpScriptTransform-encoded-transform-different-order-worker.js');
-    const data = await new Promise(resolve => worker.onmessage = (event) => resolve(event.data));
-    assert_equals(data, "registered");
-
-    await setMediaPermission("granted", ["camera"]);
-    const localStream = await navigator.mediaDevices.getUserMedia({video: true});
-
-    let sender, receiver;
-    const senderTransform = new RTCRtpScriptTransform(worker, {name:'sender'});
-    const receiverTransform = new RTCRtpScriptTransform(worker, {name:'receiver'});
-
-    const stream = await new Promise((resolve, reject) => {
-        createConnections(test, (firstConnection) => {
-            sender = firstConnection.addTrack(localStream.getVideoTracks()[0], localStream);
-            sender.transform = senderTransform;
-        }, (secondConnection) => {
-            secondConnection.ontrack = (trackEvent) => {
-                receiver = trackEvent.receiver;
-                receiver.transform = receiverTransform;
-                resolve(trackEvent.streams[0]);
-            };
-        });
-    });
-
-    video.srcObject = stream;
-
-    const updatePromise = new Promise(resolve => worker.onmessage = (event) => resolve(event.data));
-    assert_equals(await updatePromise, "got expected");
-
-}, "Sender writes video frames in incorrect order. Frames written in incorrect order are discarded.");
-
-promise_test(async (test) => {
-    const worker = new Worker('RTCRtpScriptTransform-encoded-transform-different-order-worker.js');
-    const data = await new Promise(resolve => worker.onmessage = (event) => resolve(event.data));
-    assert_equals(data, "registered");
-
-    await setMediaPermission("granted", ["microphone"]);
-    const localStream = await navigator.mediaDevices.getUserMedia({audio: true});
-
-    let sender, receiver;
-    const senderTransform = new RTCRtpScriptTransform(worker, {name:'sender'});
-    const receiverTransform = new RTCRtpScriptTransform(worker, {name:'receiver'});
-
-    const stream = await new Promise((resolve, reject) => {
-        createConnections(test, (firstConnection) => {
-            sender = firstConnection.addTrack(localStream.getAudioTracks()[0], localStream);
-            sender.transform = senderTransform;
-        }, (secondConnection) => {
-            secondConnection.ontrack = (trackEvent) => {
-                receiver = trackEvent.receiver;
-                receiver.transform = receiverTransform;
-                resolve(trackEvent.streams[0]);
-            };
-        });
-    });
-
-    video.srcObject = stream;
-
-    const updatePromise = new Promise(resolve => worker.onmessage = (event) => resolve(event.data));
-    assert_equals(await updatePromise, "got expected");
-
-}, "Sender writes audio frames in incorrect order. Frames written in incorrect order are discarded.");
-
         </script>
     </body>
 </html>
diff --git a/tests/wpt/tests/webrtc-encoded-transform/helper.js b/tests/wpt/tests/webrtc-encoded-transform/helper.js
index 8418b284a77..d4cec39ffce 100644
--- a/tests/wpt/tests/webrtc-encoded-transform/helper.js
+++ b/tests/wpt/tests/webrtc-encoded-transform/helper.js
@@ -24,11 +24,3 @@ async function setupLoopbackWithCodecAndGetReader(t, codec) {
   await exchangeOfferAnswer(caller, callee);
   return senderStreams.readable.getReader();
 }
-
-function appendToBuffer(buffer, value) {
-  const result = new ArrayBuffer(buffer.byteLength + 1);
-  const byteResult = new Uint8Array(result);
-  byteResult.set(new Uint8Array(buffer), 0);
-  byteResult[buffer.byteLength] = value;
-  return result;
-}
diff --git a/tests/wpt/tests/webrtc-extensions/RTCRtpEncodingParameters-scaleResolutionDownTo.https.html b/tests/wpt/tests/webrtc-extensions/RTCRtpEncodingParameters-scaleResolutionDownTo.https.html
new file mode 100644
index 00000000000..01205b889bb
--- /dev/null
+++ b/tests/wpt/tests/webrtc-extensions/RTCRtpEncodingParameters-scaleResolutionDownTo.https.html
@@ -0,0 +1,240 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>RTCRtpEncodingParameters scaleResolutionDownTo attribute</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+'use strict';
+
+// Creates a track that can be resized with `track.resize(w,h)`.
+function createResizableTrack(width, height) {
+  // Draw to a canvas with a 30 fps interval.
+  const canvas = Object.assign(
+      document.createElement('canvas'), {width, height});
+  const ctx = canvas.getContext('2d');
+  ctx.fillStyle = 'rgb(255,0,0)';
+  const interval = setInterval(() => {
+    ctx.fillRect(0, 0, canvas.width, canvas.height);
+  }, 1000 / 30);
+  // Capture the canvas and add/modify reize() and stop() methods.
+  const stream = canvas.captureStream();
+  const [track] = stream.getTracks();
+  track.resize = (w, h) => {
+    canvas.width = w;
+    canvas.height = h;
+  };
+  const nativeStop = track.stop;
+  track.stop = () => {
+    clearInterval(interval);
+    nativeStop.apply(track);
+  };
+  return track;
+}
+
+async function getLastEncodedResolution(pc) {
+  const report = await pc.getStats();
+  for (const stats of report.values()) {
+    if (stats.type != 'outbound-rtp') {
+      continue;
+    }
+    if (!stats.frameWidth || !stats.frameWidth) {
+      // The resolution is missing until the first frame has been encoded.
+      break;
+    }
+    return { width: stats.frameWidth, height: stats.frameHeight };
+  }
+  return { width: null, height: null };
+}
+
+async function waitForFrameWithResolution(t, pc, width, height) {
+  let resolution;
+  do {
+    resolution = await getLastEncodedResolution(pc);
+    await new Promise(r => t.step_timeout(r, 50));
+  } while (resolution.width != width || resolution.height != height);
+}
+
+promise_test(async t => {
+  const pc = new RTCPeerConnection();
+  t.add_cleanup(() => pc.close());
+
+  const track = createResizableTrack(120, 60);
+  t.add_cleanup(() => track.stop());
+  assert_throws_dom('OperationError', () => {
+    pc.addTransceiver(track, {
+          sendEncodings:[{
+              scaleResolutionDownTo: undefined,
+          }, {
+              scaleResolutionDownTo: { maxWidth: 120, maxHeight: 60 }
+          }]
+        });
+  });
+}, `addTransceiver: Specifying scaling on some but not all encodings throws`);
+
+promise_test(async t => {
+  const pc = new RTCPeerConnection();
+  t.add_cleanup(() => pc.close());
+
+  const track = createResizableTrack(120, 60);
+  t.add_cleanup(() => track.stop());
+  const {sender} = pc.addTransceiver(track, {sendEncodings:[{},{}]});
+
+  const params = sender.getParameters();
+  params.encodings[0].scaleResolutionDownTo = undefined;
+  params.encodings[1].scaleResolutionDownTo = { maxWidth: 120, maxHeight: 60 };
+  const p = sender.setParameters(params);
+
+  promise_rejects_dom(t, 'InvalidModificationError', p);
+}, `setParameters: Specifying scaling on some but not all encodings throws`);
+
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+  pc1.onicecandidate = e => pc2.addIceCandidate(e.candidate);
+  pc2.onicecandidate = e => pc1.addIceCandidate(e.candidate);
+
+  const track = createResizableTrack(120, 60);
+  t.add_cleanup(() => track.stop());
+
+  pc1.addTransceiver(track, {
+        sendEncodings:[{
+            scaleResolutionDownBy: 2.0,
+            scaleResolutionDownTo: { maxWidth: 120, maxHeight: 60 }
+        }]
+      });
+
+  await pc1.setLocalDescription();
+  await pc2.setRemoteDescription(pc1.localDescription);
+  await pc2.setLocalDescription();
+  await pc1.setRemoteDescription(pc2.localDescription);
+
+  await waitForFrameWithResolution(t, pc1, 120, 60);
+}, `addTransceiver: scaleResolutionDownBy is ignored when ` +
+   `scaleResolutionDownTo is specified`);
+
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+  pc1.onicecandidate = e => pc2.addIceCandidate(e.candidate);
+  pc2.onicecandidate = e => pc1.addIceCandidate(e.candidate);
+
+  const track = createResizableTrack(120, 60);
+  t.add_cleanup(() => track.stop());
+  const {sender} = pc1.addTransceiver(track);
+
+  const params = sender.getParameters();
+  params.encodings[0].scaleResolutionDownBy = 2.0;
+  params.encodings[0].scaleResolutionDownTo = { maxWidth: 120, maxHeight: 60 };
+  const p = sender.setParameters(params);
+
+  await pc1.setLocalDescription();
+  await pc2.setRemoteDescription(pc1.localDescription);
+  await pc2.setLocalDescription();
+  await pc1.setRemoteDescription(pc2.localDescription);
+
+  await waitForFrameWithResolution(t, pc1, 120, 60);
+}, `setParameters: scaleResolutionDownBy is ignored when ` +
+   `scaleResolutionDownTo is specified`);
+
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+  pc1.onicecandidate = e => pc2.addIceCandidate(e.candidate);
+  pc2.onicecandidate = e => pc1.addIceCandidate(e.candidate);
+
+  const track = createResizableTrack(120, 60);
+  t.add_cleanup(() => track.stop());
+  const {sender} = pc1.addTransceiver(track, {
+      sendEncodings: [{
+          scaleResolutionDownTo: { maxWidth: 60, maxHeight: 30 }
+      }]
+  });
+
+  await pc1.setLocalDescription();
+  await pc2.setRemoteDescription(pc1.localDescription);
+  await pc2.setLocalDescription();
+  await pc1.setRemoteDescription(pc2.localDescription);
+
+  await waitForFrameWithResolution(t, pc1, 60, 30);
+}, `addTransceiver: scaleResolutionDownTo with half resolution`);
+
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+  pc1.onicecandidate = e => pc2.addIceCandidate(e.candidate);
+  pc2.onicecandidate = e => pc1.addIceCandidate(e.candidate);
+
+  const track = createResizableTrack(120, 60);
+  t.add_cleanup(() => track.stop());
+  const {sender} = pc1.addTransceiver(track);
+
+  await pc1.setLocalDescription();
+  await pc2.setRemoteDescription(pc1.localDescription);
+  await pc2.setLocalDescription();
+  await pc1.setRemoteDescription(pc2.localDescription);
+
+  // Request full resolution.
+  let params = sender.getParameters();
+  params.encodings[0].scaleResolutionDownTo = { maxWidth: 120, maxHeight: 60 };
+  await sender.setParameters(params);
+  await waitForFrameWithResolution(t, pc1, 120, 60);
+
+  // Request half resolution.
+  params = sender.getParameters();
+  params.encodings[0].scaleResolutionDownTo = { maxWidth: 60, maxHeight: 30 };
+  await sender.setParameters(params);
+  await waitForFrameWithResolution(t, pc1, 60, 30);
+
+  // Request full resolution again.
+  params = sender.getParameters();
+  params.encodings[0].scaleResolutionDownTo = { maxWidth: 120, maxHeight: 60 };
+  await sender.setParameters(params);
+  await waitForFrameWithResolution(t, pc1, 120, 60);
+}, `setParameters: Modify scaleResolutionDownTo while sending`);
+
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+  pc1.onicecandidate = e => pc2.addIceCandidate(e.candidate);
+  pc2.onicecandidate = e => pc1.addIceCandidate(e.candidate);
+
+  const track = createResizableTrack(60, 30);
+  t.add_cleanup(() => track.stop());
+  const {sender} = pc1.addTransceiver(track);
+
+  await pc1.setLocalDescription();
+  await pc2.setRemoteDescription(pc1.localDescription);
+  await pc2.setLocalDescription();
+  await pc1.setRemoteDescription(pc2.localDescription);
+
+  // scaleTo is portrait, track is landscape, but no scaling should happen due
+  // to orientation agnosticism.
+  let params = sender.getParameters();
+  params.encodings[0].scaleResolutionDownTo = { maxWidth: 30, maxHeight: 60 };
+  await sender.setParameters(params);
+  await waitForFrameWithResolution(t, pc1, 60, 30);
+
+  // Change orientation of the track: still no downscale, but encoder begins to
+  // produce the new orientation.
+  track.resize(30, 60);
+  await waitForFrameWithResolution(t, pc1, 30, 60);
+
+  // scaleTo in landscape, reducing to half size. Verify track, which is
+  // portrait, is scaled down by 2.
+  params = sender.getParameters();
+  params.encodings[0].scaleResolutionDownTo = { maxWidth: 30, maxHeight: 15 };
+  await sender.setParameters(params);
+  await waitForFrameWithResolution(t, pc1, 15, 30);
+}, `scaleResolutionDownTo is orientation agnostic`);
+</script>
diff --git a/tests/wpt/tests/webrtc/RTCPeerConnection-generateCertificate.html b/tests/wpt/tests/webrtc/RTCPeerConnection-generateCertificate.html
index 4cda97e9b7e..534df680839 100644
--- a/tests/wpt/tests/webrtc/RTCPeerConnection-generateCertificate.html
+++ b/tests/wpt/tests/webrtc/RTCPeerConnection-generateCertificate.html
@@ -1,5 +1,6 @@
 <!doctype html>
 <meta charset="utf-8">
+<meta name="timeout" content="long">
 <title>Test RTCPeerConnection.generateCertificate</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
@@ -33,20 +34,23 @@
    *          publicExponent: new Uint8Array([1, 0, 1]), hash: "SHA-256" },
    *        and { name: "ECDSA", namedCurve: "P-256" }.
    */
-  promise_test(t =>
-    RTCPeerConnection.generateCertificate({
-      name: 'RSASSA-PKCS1-v1_5',
-      modulusLength: 2048,
-      publicExponent: new Uint8Array([1, 0, 1]),
-      hash: 'SHA-256'
-    }).then(cert => {
-      assert_true(cert instanceof RTCCertificate,
-        'Expect cert to be instance of RTCCertificate');
+  [1024, 2048].forEach(modulusLength => {
+    promise_test(t =>
+      // Test common RSA key sizes. Only 2048 is mandatory to support.
+      RTCPeerConnection.generateCertificate({
+        name: 'RSASSA-PKCS1-v1_5',
+        modulusLength,
+        publicExponent: new Uint8Array([1, 0, 1]),
+        hash: 'SHA-256'
+      }).then(cert => {
+        assert_true(cert instanceof RTCCertificate,
+          'Expect cert to be instance of RTCCertificate');
 
-      assert_greater_than(cert.expires, Date.now(),
-        'Expect generated certificate to expire reasonably long after current time');
-    }),
-    'generateCertificate() with compulsary RSASSA-PKCS1-v1_5 parameters should succeed');
+        assert_greater_than(cert.expires, Date.now(),
+          'Expect generated certificate to expire reasonably long after current time');
+      }),
+      `generateCertificate({modulusLength: ${modulusLength}}) with RSASSA-PKCS1-v1_5 parameters should succeed`);
+  });
 
   promise_test(t =>
     RTCPeerConnection.generateCertificate({