From 1d0624b34371d6b54ddf2837dd5c16229a66426d Mon Sep 17 00:00:00 2001
From: WPT Sync Bot <josh+wptsync@joshmatthews.net>
Date: Fri, 16 Nov 2018 21:03:13 -0500
Subject: [PATCH] Update web-platform-tests to revision
 04cd5eb8e5c47e4fe341f2fb541d39fa2346f464

---
 .../FileAPI/url/url-with-fetch.any.js.ini     |    3 -
 tests/wpt/metadata/MANIFEST.json              | 1104 ++++++++++++++---
 .../parsing/animation-delay-computed.html.ini |   10 -
 .../animation-duration-computed.html.ini      |   10 -
 .../align-content-wrap-001.html.ini           |   13 +
 .../align-content-wrap-002.html.ini           |   10 +
 .../align-content-wrap-003.html.ini           |   70 ++
 .../writing-system-line-break-002.html.ini    |    2 +
 .../writing-system-segment-break-001.html.ini |    2 +
 .../transition-duration-computed.html.ini     |   10 -
 ...nsitions-animatable-properties-01.html.ini |    5 +-
 .../backdrop-filter-clip-rect.html.ini        |    2 +
 .../parsing/backdrop-filter-computed.html.ini |   85 --
 .../parsing/filter-computed.html.ini          |   48 -
 .../metadata/css/geometry/interfaces.html.ini |    9 +
 .../css/geometry/interfaces.worker.js.ini     |    9 +
 .../css/selectors/invalidation/is.html.ini    |   19 +
 .../metadata/css/selectors/is-nested.html.ini |    7 +
 .../css/selectors/is-specificity.html.ini     |    4 +
 .../encoding/single-byte-decoder.html.ini     |   34 +-
 .../api/headers/headers-no-cors.window.js.ini |   12 +
 .../traverse_the_history_5.html.ini           |    4 -
 .../non-active-document.html.ini              |   10 -
 ...lout-exception-vs-return-xml.window.js.ini |    3 +
 .../webtiming-resolution.any.js.ini           |    3 +
 ...uirks.html.ini => limited-quirks.html.ini} |    2 +-
 .../quirks/unitless-length/quirks.html.ini    |  283 -----
 .../wpt/metadata/wasm/webapi/abort.any.js.ini |   12 +
 .../realtimeanalyser-fft-scaling.html.ini     |    1 -
 tests/wpt/web-platform-tests/.taskcluster.yml |    5 +-
 tests/wpt/web-platform-tests/.travis.yml      |    8 +-
 .../IndexedDB/idbcursor_advance_index2.htm    |    2 +-
 .../IndexedDB/idbcursor_advance_index3.htm    |    2 +-
 .../IndexedDB/idbcursor_advance_index5.htm    |    2 +-
 .../IndexedDB/idbcursor_continue_index5.htm   |    2 +-
 .../IndexedDB/idbcursor_continue_index6.htm   |    2 +-
 .../IndexedDB/idbcursor_continue_invalid.htm  |    2 +-
 .../IndexedDB/idbcursor_iterating.htm         |    2 +-
 .../IndexedDB/idbcursor_iterating_index.htm   |    2 +-
 .../IndexedDB/idbcursor_iterating_index2.htm  |    2 +-
 .../idbcursor_iterating_objectstore.htm       |    2 +-
 .../idbcursor_iterating_objectstore2.htm      |    2 +-
 .../idbcursor_update_objectstore4.htm         |    2 +-
 ...bdatabase_createObjectStore10-1000ends.htm |    2 +-
 .../idbdatabase_createObjectStore7.htm        |    2 +-
 ...database_deleteObjectStore4-not_reused.htm |    2 +-
 .../IndexedDB/idbdatabase_transaction4.htm    |    2 +-
 .../IndexedDB/idbfactory_deleteDatabase3.htm  |    2 +-
 .../IndexedDB/idbfactory_open10.htm           |    2 +-
 .../IndexedDB/idbfactory_open11.htm           |    2 +-
 .../IndexedDB/idbfactory_open12.htm           |    2 +-
 .../idbindex-multientry-arraykeypath.htm      |    2 +-
 .../IndexedDB/idbindex-multientry-big.htm     |    4 +-
 .../IndexedDB/idbindex-multientry.htm         |    2 +-
 .../IndexedDB/idbindex_indexNames.htm         |    2 +-
 ...ctstore_createIndex3-usable-right-away.htm |    2 +-
 ...e_createIndex4-deleteIndex-event_order.htm |    2 +-
 ...bobjectstore_createIndex5-emptykeypath.htm |    2 +-
 ...dbobjectstore_createIndex6-event_order.htm |    2 +-
 ...dbobjectstore_createIndex7-event_order.htm |    2 +-
 ...idbobjectstore_createIndex8-valid_keys.htm |    2 +-
 .../IndexedDB/idbobjectstore_deleted.htm      |    2 +-
 .../IndexedDB/idbtransaction-oncomplete.htm   |    2 +-
 .../IndexedDB/idbtransaction_abort.htm        |    2 +-
 .../IndexedDB/idbversionchangeevent.htm       |    2 +-
 .../keygenerator-constrainterror.htm          |    2 +-
 .../IndexedDB/keygenerator-overflow.htm       |    2 +-
 .../web-platform-tests/IndexedDB/keyorder.htm |    2 +-
 .../IndexedDB/keypath_maxsize.htm             |    2 +-
 .../IndexedDB/request_bubble-and-capture.htm  |    2 +-
 .../transaction-lifetime-blocked.htm          |    2 +-
 .../IndexedDB/transaction-lifetime.htm        |    2 +-
 .../IndexedDB/transaction-requestqueue.htm    |    2 +-
 .../transaction_bubble-and-capture.htm        |    2 +-
 .../IndexedDB/writer-starvation.htm           |    2 +-
 .../css/css-backgrounds/box-shadow-body.html  |   20 +
 .../reference/box-shadow-body-ref.html        |   20 +
 ...r-unbreakable-float-after-padding-ref.html |    7 +
 ...after-unbreakable-float-after-padding.html |   11 +
 .../css-flexbox/align-content-wrap-001.html   |   77 ++
 .../css-flexbox/align-content-wrap-002.html   |  108 ++
 .../css-flexbox/align-content-wrap-003.html   |  330 +++++
 .../css-flexbox/align-content-wrap-004.html   |   38 +
 ...elf-alignment-stretch-input-range-ref.html |   61 +
 ...id-self-alignment-stretch-input-range.html |   58 +
 .../grid-container-scrollbar-001-ref.html     |    3 +-
 .../grid-container-scrollbar-001.html         |    5 +-
 ...ntainer-scrollbar-vertical-lr-001-ref.html |    3 +-
 ...d-container-scrollbar-vertical-lr-001.html |    5 +-
 ...ntainer-scrollbar-vertical-rl-001-ref.html |    3 +-
 ...d-container-scrollbar-vertical-rl-001.html |    5 +-
 .../logical-values-float-clear-reftest.html   |   68 +
 ...ogical-values-float-clear-reftest-ref.html |   68 +
 .../resources/test-logical-values.js          |   22 +-
 .../var-reference-registered-properties.html  |   35 +
 .../writing-system-font-001-ref.html          |   20 +
 .../writing-system-line-break-001-ref.html    |   14 +
 .../writing-system-line-break-002-ref.html    |   11 +
 .../writing-system-segment-break-001-ref.html |   10 +
 ...writing-system-text-transform-001-ref.html |   13 +
 .../writing-system-font-001.html              |   25 +
 .../writing-system-line-break-001.html        |   22 +
 .../writing-system-line-break-002.html        |   22 +
 .../writing-system-segment-break-001.html     |   27 +
 .../writing-system-text-transform-001.html    |   19 +
 .../resources/interpolation-testcommon.js     |   26 +-
 ...ackdrop-filter-basic-background-color.html |    1 -
 .../backdrop-filter-basic-opacity.html        |    1 -
 .../filter-effects/backdrop-filter-basic.html |    1 -
 .../backdrop-filter-border-radius.html        |    1 -
 .../backdrop-filter-clip-rect-ref.html        |   43 +
 .../backdrop-filter-clip-rect.html            |   43 +
 .../backdrop-filter-edge-pixels-ref.html      |   25 +
 .../backdrop-filter-edge-pixels.html          |   24 +
 .../backdrop-filter-isolation-isolate.html    |    1 -
 .../backdrop-filter-isolation.html            |    1 -
 .../backdrop-filter-paint-order-ref.html      |   50 +
 .../backdrop-filter-paint-order.html          |   49 +
 .../invalidation/{matches.html => is.html}    |   22 +-
 .../css/selectors/invalidation/where.html     |    2 +-
 .../{matches-nested.html => is-nested.html}   |   16 +-
 ...s-specificity.html => is-specificity.html} |    8 +-
 .../css/support/computed-testcommon.js        |    6 +
 ...isabled-violation-report-js-tentative.html |   43 +
 ...violation-report-js-tentative.html.headers |    1 +
 ...-violation-report-keyframes-tentative.html |   30 +
 ...on-report-keyframes-tentative.html.headers |    1 +
 .../resources/animation-property-height.js    |    3 +
 .../experimental-features/resources/common.js |   27 +-
 .../reporting/camera-report-only.https.html   |   29 +
 .../camera-report-only.https.html.headers     |    1 +
 .../reporting/camera-reporting.https.html     |    9 +-
 .../reporting/document-write-report-only.html |   26 +
 .../document-write-report-only.html.headers   |    1 +
 .../reporting/document-write-reporting.html   |    9 +-
 .../encrypted-media-report-only.https.html    |   30 +
 ...ypted-media-report-only.https.html.headers |    1 +
 .../encrypted-media-reporting.https.html      |    1 +
 .../reporting/fullscreen-report-only.html     |   31 +
 .../fullscreen-report-only.html.headers       |    1 +
 .../reporting/fullscreen-reporting.html       |    9 +-
 .../generic-sensor-report-only.https.html     |   56 +
 ...eric-sensor-report-only.https.html.headers |    1 +
 .../generic-sensor-reporting.https.html       |    1 +
 .../geolocation-report-only.https.html        |   36 +
 ...geolocation-report-only.https.html.headers |    1 +
 .../geolocation-reporting.https.html          |    8 +-
 .../microphone-report-only.https.html         |   29 +
 .../microphone-report-only.https.html.headers |    1 +
 .../reporting/microphone-reporting.https.html |    9 +-
 .../reporting/midi-report-only.html           |   34 +
 .../reporting/midi-report-only.html.headers   |    1 +
 .../reporting/midi-reporting.html             |    9 +-
 .../reporting/payment-report-only.https.html  |   37 +
 .../payment-report-only.https.html.headers    |    1 +
 .../reporting/payment-reporting.https.html    |    9 +-
 .../picture-in-picture-report-only.html       |   40 +
 ...icture-in-picture-report-only.html.headers |    1 +
 .../picture-in-picture-reporting.html         |    1 +
 .../reporting/sync-xhr-report-only.html       |   28 +
 .../sync-xhr-report-only.html.headers         |    1 +
 .../reporting/sync-xhr-reporting.html         |    9 +-
 .../reporting/unsized-media-reporting.html    |    6 +-
 .../reporting/usb-report-only.https.html      |   30 +
 .../usb-report-only.https.html.headers        |    1 +
 .../reporting/usb-reporting.https.html        |    9 +-
 .../reporting/vr-report-only.https.html       |   31 +
 .../vr-report-only.https.html.headers         |    1 +
 .../reporting/vr-reporting.https.html         |    9 +-
 .../reporting/xr-report-only.https.html       |   37 +
 .../xr-report-only.https.html.headers         |    1 +
 .../reporting/xr-reporting.https.html         |    9 +-
 .../reporting/xr-reporting.https.html.headers |    2 +-
 .../api/headers/headers-no-cors.window.js     |   29 +
 .../rendering/fullscreen-css-transition.html  |   27 +
 .../time-focus-dynamic-value-change.html      |   31 +
 .../actions/elementPosition.html.ini          |    4 +-
 .../testdriver/actions/eventOrder.html.ini    |    4 +-
 .../testdriver/actions/elementPosition.html   |    2 +-
 .../testdriver/actions/eventOrder.html        |   14 +-
 .../interfaces/geometry.idl                   |    2 +
 tests/wpt/web-platform-tests/lint.whitelist   |    1 +
 .../longtask-timing/longtask-attributes.html  |    4 +-
 .../longtask-in-childiframe-crossorigin.html  |    2 +-
 .../longtask-in-childiframe.html              |    2 +-
 .../longtask-in-externalscript.html           |    4 +-
 .../longtask-in-parentiframe.html             |    2 +-
 .../longtask-timing/longtask-in-raf.html      |    2 +-
 ...ongtask-in-sibling-iframe-crossorigin.html |    2 +-
 .../longtask-in-sibling-iframe.html           |    2 +-
 ...l => pointerevent_pointermove-manual.html} |    6 -
 .../worker-dedicated-uncaught-allow.html      |   48 +
 .../tests/functional/worker-uncaught-allow.js |   17 +
 .../resources/testdriver-actions.js           |   22 +-
 .../resources/testdriver.js                   |    4 +-
 .../resources/testharness.js                  |   27 +-
 .../service-worker/clients-get.https.html     |  156 +++
 .../service-worker/fetch-event.https.html     |   23 +-
 .../import-module-scripts.https.html          |    1 +
 .../clients-get-resultingClientId-worker.js   |   64 +
 .../resources/fetch-event-test-worker.js      |   11 +
 .../resources/registration-tests-scope.js     |    4 +-
 .../registration-tests-security-error.js      |    4 +-
 .../svg/geometry/parsing/cx-computed.svg      |   27 +
 .../svg/geometry/parsing/cy-computed.svg      |   27 +
 .../svg/geometry/parsing/r-computed.svg       |   27 +
 .../svg/geometry/parsing/rx-computed.svg      |   29 +
 .../svg/geometry/parsing/ry-computed.svg      |   29 +
 .../svg/geometry/parsing/x-computed.svg       |   27 +
 .../svg/geometry/parsing/y-computed.svg       |   27 +
 .../svg/interact/script-common.html           |   55 +
 .../svg/interact/script-content.svg           |  239 ++++
 .../paint-order-computed-value-01.svg         |   62 +
 .../wptrunner/wptrunner/browsers/fennec.py    |    3 +-
 .../tools/wptserve/wptserve/server.py         |    2 +-
 .../user-timing/mark-measure-return-null.html |   46 +
 .../wasm/webapi/abort.any.js                  |   13 +
 .../webdriver/tests/maximize_window/stress.py |    1 +
 .../RTCConfiguration-rtcpMuxPolicy.html       |    5 +-
 .../RTCPeerConnection-addIceCandidate.html    |   69 +-
 .../RTCPeerConnection-iceGatheringState.html  |    5 +-
 ...RTCPeerConnection-onnegotiationneeded.html |    5 +-
 ...nnection-setLocalDescription-rollback.html |    3 +-
 ...Connection-setRemoteDescription-offer.html |    3 +-
 ...nection-setRemoteDescription-rollback.html |    5 +-
 .../webrtc/RTCQuicStream.https.html           |  127 +-
 226 files changed, 4495 insertions(+), 903 deletions(-)
 delete mode 100644 tests/wpt/metadata/css/css-animations/parsing/animation-delay-computed.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-animations/parsing/animation-duration-computed.html.ini
 create mode 100644 tests/wpt/metadata/css/css-flexbox/align-content-wrap-001.html.ini
 create mode 100644 tests/wpt/metadata/css/css-flexbox/align-content-wrap-002.html.ini
 create mode 100644 tests/wpt/metadata/css/css-flexbox/align-content-wrap-003.html.ini
 create mode 100644 tests/wpt/metadata/css/css-text/writing-system/writing-system-line-break-002.html.ini
 create mode 100644 tests/wpt/metadata/css/css-text/writing-system/writing-system-segment-break-001.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-transitions/parsing/transition-duration-computed.html.ini
 create mode 100644 tests/wpt/metadata/css/filter-effects/backdrop-filter-clip-rect.html.ini
 delete mode 100644 tests/wpt/metadata/css/filter-effects/parsing/backdrop-filter-computed.html.ini
 create mode 100644 tests/wpt/metadata/css/selectors/invalidation/is.html.ini
 create mode 100644 tests/wpt/metadata/css/selectors/is-nested.html.ini
 create mode 100644 tests/wpt/metadata/css/selectors/is-specificity.html.ini
 delete mode 100644 tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
 delete mode 100644 tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
 rename tests/wpt/metadata/quirks/unitless-length/{no-quirks.html.ini => limited-quirks.html.ini} (99%)
 delete mode 100644 tests/wpt/metadata/quirks/unitless-length/quirks.html.ini
 create mode 100644 tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-body.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-body-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/line-after-unbreakable-float-after-padding-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/line-after-unbreakable-float-after-padding.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-002.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-003.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-004.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-stretch-input-range-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-stretch-input-range.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-logical/logical-values-float-clear-reftest.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-logical/reference/logical-values-float-clear-reftest-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-font-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-line-break-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-line-break-002-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-segment-break-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-text-transform-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-font-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-line-break-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-line-break-002.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-segment-break-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-text-transform-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-clip-rect-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-clip-rect.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-edge-pixels-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-edge-pixels.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-paint-order-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-paint-order.html
 rename tests/wpt/web-platform-tests/css/selectors/invalidation/{matches.html => is.html} (84%)
 rename tests/wpt/web-platform-tests/css/selectors/{matches-nested.html => is-nested.html} (74%)
 rename tests/wpt/web-platform-tests/css/selectors/{matches-specificity.html => is-specificity.html} (76%)
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/experimental-features/resources/animation-property-height.js
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/camera-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/camera-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/document-write-report-only.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/document-write-report-only.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-report-only.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-report-only.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/microphone-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/microphone-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/midi-report-only.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/midi-report-only.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/payment-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/payment-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-report-only.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-report-only.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-report-only.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-report-only.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/usb-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/usb-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/vr-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/vr-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/xr-report-only.https.html
 create mode 100644 tests/wpt/web-platform-tests/feature-policy/reporting/xr-report-only.https.html.headers
 create mode 100644 tests/wpt/web-platform-tests/fullscreen/rendering/fullscreen-css-transition.html
 create mode 100644 tests/wpt/web-platform-tests/html/semantics/forms/the-input-element/time-focus-dynamic-value-change.html
 rename tests/wpt/web-platform-tests/pointerevents/{pointerevent_pointermove.html => pointerevent_pointermove-manual.html} (86%)
 create mode 100644 tests/wpt/web-platform-tests/resources/test/tests/functional/worker-dedicated-uncaught-allow.html
 create mode 100644 tests/wpt/web-platform-tests/resources/test/tests/functional/worker-uncaught-allow.js
 create mode 100644 tests/wpt/web-platform-tests/service-workers/service-worker/resources/clients-get-resultingClientId-worker.js
 create mode 100644 tests/wpt/web-platform-tests/svg/geometry/parsing/cx-computed.svg
 create mode 100644 tests/wpt/web-platform-tests/svg/geometry/parsing/cy-computed.svg
 create mode 100644 tests/wpt/web-platform-tests/svg/geometry/parsing/r-computed.svg
 create mode 100644 tests/wpt/web-platform-tests/svg/geometry/parsing/rx-computed.svg
 create mode 100644 tests/wpt/web-platform-tests/svg/geometry/parsing/ry-computed.svg
 create mode 100644 tests/wpt/web-platform-tests/svg/geometry/parsing/x-computed.svg
 create mode 100644 tests/wpt/web-platform-tests/svg/geometry/parsing/y-computed.svg
 create mode 100644 tests/wpt/web-platform-tests/svg/interact/script-common.html
 create mode 100644 tests/wpt/web-platform-tests/svg/interact/script-content.svg
 create mode 100644 tests/wpt/web-platform-tests/svg/painting/scripted/paint-order-computed-value-01.svg
 create mode 100644 tests/wpt/web-platform-tests/user-timing/mark-measure-return-null.html

diff --git a/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini b/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
index 3a3d15b8406..6a3af4e2ece 100644
--- a/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
+++ b/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
@@ -37,6 +37,3 @@
   [Revoke blob URL after creating Request, will fetch]
     expected: FAIL
 
-  [Revoke blob URL after calling fetch, fetch should succeed]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index bf86c885749..b7fc9784d75 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -13795,6 +13795,12 @@
      {}
     ]
    ],
+   "pointerevents/pointerevent_pointermove-manual.html": [
+    [
+     "/pointerevents/pointerevent_pointermove-manual.html",
+     {}
+    ]
+   ],
    "pointerevents/pointerevent_pointermove_isprimary_same_as_pointerdown-manual.html": [
     [
      "/pointerevents/pointerevent_pointermove_isprimary_same_as_pointerdown-manual.html",
@@ -107203,6 +107209,18 @@
      {}
     ]
    ],
+   "css/css-backgrounds/box-shadow-body.html": [
+    [
+     "/css/css-backgrounds/box-shadow-body.html",
+     [
+      [
+       "/css/css-backgrounds/reference/box-shadow-body-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-backgrounds/box-shadow-inset-spread-without-border-radius.html": [
     [
      "/css/css-backgrounds/box-shadow-inset-spread-without-border-radius.html",
@@ -107491,6 +107509,18 @@
      {}
     ]
    ],
+   "css/css-break/line-after-unbreakable-float-after-padding.html": [
+    [
+     "/css/css-break/line-after-unbreakable-float-after-padding.html",
+     [
+      [
+       "/css/css-break/line-after-unbreakable-float-after-padding-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-break/widows-orphans-001.html": [
     [
      "/css/css-break/widows-orphans-001.html",
@@ -113911,6 +113941,18 @@
      {}
     ]
    ],
+   "css/css-flexbox/align-content-wrap-004.html": [
+    [
+     "/css/css-flexbox/align-content-wrap-004.html",
+     [
+      [
+       "/css/reference/ref-filled-green-100px-square.xht",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-flexbox/align-items-001.htm": [
     [
      "/css/css-flexbox/align-items-001.htm",
@@ -121143,6 +121185,18 @@
      {}
     ]
    ],
+   "css/css-grid/alignment/grid-self-alignment-stretch-input-range.html": [
+    [
+     "/css/css-grid/alignment/grid-self-alignment-stretch-input-range.html",
+     [
+      [
+       "/css/css-grid/alignment/grid-self-alignment-stretch-input-range-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-grid/alignment/self-baseline/grid-self-baseline-changes-grid-area-size-001.html": [
     [
      "/css/css-grid/alignment/self-baseline/grid-self-baseline-changes-grid-area-size-001.html",
@@ -124527,6 +124581,18 @@
      {}
     ]
    ],
+   "css/css-logical/logical-values-float-clear-reftest.html": [
+    [
+     "/css/css-logical/logical-values-float-clear-reftest.html",
+     [
+      [
+       "/css/css-logical/reference/logical-values-float-clear-reftest-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-masking/clip-path-svg-content/clip-path-clip-nested-twice.svg": [
     [
      "/css/css-masking/clip-path-svg-content/clip-path-clip-nested-twice.svg",
@@ -141831,6 +141897,66 @@
      {}
     ]
    ],
+   "css/css-text/writing-system/writing-system-font-001.html": [
+    [
+     "/css/css-text/writing-system/writing-system-font-001.html",
+     [
+      [
+       "/css/css-text/writing-system/reference/writing-system-font-001-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
+   "css/css-text/writing-system/writing-system-line-break-001.html": [
+    [
+     "/css/css-text/writing-system/writing-system-line-break-001.html",
+     [
+      [
+       "/css/css-text/writing-system/reference/writing-system-line-break-001-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
+   "css/css-text/writing-system/writing-system-line-break-002.html": [
+    [
+     "/css/css-text/writing-system/writing-system-line-break-002.html",
+     [
+      [
+       "/css/css-text/writing-system/reference/writing-system-line-break-002-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
+   "css/css-text/writing-system/writing-system-segment-break-001.html": [
+    [
+     "/css/css-text/writing-system/writing-system-segment-break-001.html",
+     [
+      [
+       "/css/css-text/writing-system/reference/writing-system-segment-break-001-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
+   "css/css-text/writing-system/writing-system-text-transform-001.html": [
+    [
+     "/css/css-text/writing-system/writing-system-text-transform-001.html",
+     [
+      [
+       "/css/css-text/writing-system/reference/writing-system-text-transform-001-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-transforms/2d-rotate-001.html": [
     [
      "/css/css-transforms/2d-rotate-001.html",
@@ -167799,6 +167925,30 @@
      {}
     ]
    ],
+   "css/filter-effects/backdrop-filter-clip-rect.html": [
+    [
+     "/css/filter-effects/backdrop-filter-clip-rect.html",
+     [
+      [
+       "/css/filter-effects/backdrop-filter-paint-order-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
+   "css/filter-effects/backdrop-filter-edge-pixels.html": [
+    [
+     "/css/filter-effects/backdrop-filter-edge-pixels.html",
+     [
+      [
+       "/css/filter-effects/backdrop-filter-edge-pixels-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/filter-effects/backdrop-filter-isolation-isolate.html": [
     [
      "/css/filter-effects/backdrop-filter-isolation-isolate.html",
@@ -167823,6 +167973,18 @@
      {}
     ]
    ],
+   "css/filter-effects/backdrop-filter-paint-order.html": [
+    [
+     "/css/filter-effects/backdrop-filter-paint-order.html",
+     [
+      [
+       "/css/filter-effects/backdrop-filter-paint-order-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/filter-effects/blur-clip-stacking-context-001.html": [
     [
      "/css/filter-effects/blur-clip-stacking-context-001.html",
@@ -250326,6 +250488,11 @@
      {}
     ]
    ],
+   "css/css-backgrounds/reference/box-shadow-body-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/css-backgrounds/reference/box-shadow-inset-spread-without-border-radius.html": [
     [
      {}
@@ -250826,6 +250993,11 @@
      {}
     ]
    ],
+   "css/css-break/line-after-unbreakable-float-after-padding-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/css-break/reference/widows-orphans-001-ref.html": [
     [
      {}
@@ -261781,6 +261953,11 @@
      {}
     ]
    ],
+   "css/css-grid/alignment/grid-self-alignment-stretch-input-range-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/css-grid/alignment/support/100x100-green.png": [
     [
      {}
@@ -262486,6 +262663,11 @@
      {}
     ]
    ],
+   "css/css-logical/reference/logical-values-float-clear-reftest-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/css-logical/resources/test-box-properties.js": [
     [
      {}
@@ -268841,6 +269023,31 @@
      {}
     ]
    ],
+   "css/css-text/writing-system/reference/writing-system-font-001-ref.html": [
+    [
+     {}
+    ]
+   ],
+   "css/css-text/writing-system/reference/writing-system-line-break-001-ref.html": [
+    [
+     {}
+    ]
+   ],
+   "css/css-text/writing-system/reference/writing-system-line-break-002-ref.html": [
+    [
+     {}
+    ]
+   ],
+   "css/css-text/writing-system/reference/writing-system-segment-break-001-ref.html": [
+    [
+     {}
+    ]
+   ],
+   "css/css-text/writing-system/reference/writing-system-text-transform-001-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/css-transforms/META.yml": [
     [
      {}
@@ -275521,11 +275728,26 @@
      {}
     ]
    ],
+   "css/filter-effects/backdrop-filter-clip-rect-ref.html": [
+    [
+     {}
+    ]
+   ],
+   "css/filter-effects/backdrop-filter-edge-pixels-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/filter-effects/backdrop-filter-isolation-ref.html": [
     [
      {}
     ]
    ],
+   "css/filter-effects/backdrop-filter-paint-order-ref.html": [
+    [
+     {}
+    ]
+   ],
    "css/filter-effects/blur-clip-stacking-context-ref.html": [
     [
      {}
@@ -283736,6 +283958,16 @@
      {}
     ]
    ],
+   "feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html.headers": [
+    [
+     {}
+    ]
+   ],
+   "feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/experimental-features/lazyload/lazyload-disabled-image-tentative.sub.html.headers": [
     [
      {}
@@ -283751,6 +283983,11 @@
      {}
     ]
    ],
+   "feature-policy/experimental-features/resources/animation-property-height.js": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/experimental-features/resources/async-script.js": [
     [
      {}
@@ -283941,31 +284178,61 @@
      {}
     ]
    ],
+   "feature-policy/reporting/camera-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/camera-reporting.https.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/document-write-report-only.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/document-write-reporting.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/encrypted-media-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/encrypted-media-reporting.https.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/fullscreen-report-only.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/fullscreen-reporting.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/generic-sensor-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/generic-sensor-reporting.https.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/geolocation-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/geolocation-reporting.https.html.headers": [
     [
      {}
@@ -283976,26 +284243,51 @@
      {}
     ]
    ],
+   "feature-policy/reporting/microphone-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/microphone-reporting.https.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/midi-report-only.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/midi-reporting.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/payment-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/payment-reporting.https.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/picture-in-picture-report-only.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/picture-in-picture-reporting.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/sync-xhr-report-only.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/sync-xhr-reporting.html.headers": [
     [
      {}
@@ -284006,16 +284298,31 @@
      {}
     ]
    ],
+   "feature-policy/reporting/usb-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/usb-reporting.https.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/vr-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/vr-reporting.https.html.headers": [
     [
      {}
     ]
    ],
+   "feature-policy/reporting/xr-report-only.https.html.headers": [
+    [
+     {}
+    ]
+   ],
    "feature-policy/reporting/xr-reporting.https.html.headers": [
     [
      {}
@@ -303511,6 +303818,11 @@
      {}
     ]
    ],
+   "resources/test/tests/functional/worker-dedicated-uncaught-allow.html": [
+    [
+     {}
+    ]
+   ],
    "resources/test/tests/functional/worker-dedicated-uncaught-single.html": [
     [
      {}
@@ -303536,6 +303848,11 @@
      {}
     ]
    ],
+   "resources/test/tests/functional/worker-uncaught-allow.js": [
+    [
+     {}
+    ]
+   ],
    "resources/test/tests/functional/worker-uncaught-single.js": [
     [
      {}
@@ -306256,6 +306573,11 @@
      {}
     ]
    ],
+   "service-workers/service-worker/resources/clients-get-resultingClientId-worker.js": [
+    [
+     {}
+    ]
+   ],
    "service-workers/service-worker/resources/clients-get-worker.js": [
     [
      {}
@@ -337224,6 +337546,24 @@
      {}
     ]
    ],
+   "css/css-flexbox/align-content-wrap-001.html": [
+    [
+     "/css/css-flexbox/align-content-wrap-001.html",
+     {}
+    ]
+   ],
+   "css/css-flexbox/align-content-wrap-002.html": [
+    [
+     "/css/css-flexbox/align-content-wrap-002.html",
+     {}
+    ]
+   ],
+   "css/css-flexbox/align-content-wrap-003.html": [
+    [
+     "/css/css-flexbox/align-content-wrap-003.html",
+     {}
+    ]
+   ],
    "css/css-flexbox/display_flex_exist.html": [
     [
      "/css/css-flexbox/display_flex_exist.html",
@@ -348082,9 +348422,9 @@
      {}
     ]
    ],
-   "css/selectors/invalidation/matches.html": [
+   "css/selectors/invalidation/is.html": [
     [
-     "/css/selectors/invalidation/matches.html",
+     "/css/selectors/invalidation/is.html",
      {}
     ]
    ],
@@ -348112,15 +348452,15 @@
      {}
     ]
    ],
-   "css/selectors/matches-nested.html": [
+   "css/selectors/is-nested.html": [
     [
-     "/css/selectors/matches-nested.html",
+     "/css/selectors/is-nested.html",
      {}
     ]
    ],
-   "css/selectors/matches-specificity.html": [
+   "css/selectors/is-specificity.html": [
     [
-     "/css/selectors/matches-specificity.html",
+     "/css/selectors/is-specificity.html",
      {}
     ]
    ],
@@ -360184,6 +360524,18 @@
      {}
     ]
    ],
+   "feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html": [
+    [
+     "/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html",
+     {}
+    ]
+   ],
+   "feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html": [
+    [
+     "/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html",
+     {}
+    ]
+   ],
    "feature-policy/experimental-features/layout-animations-enabled-tentative.html": [
     [
      "/feature-policy/experimental-features/layout-animations-enabled-tentative.html",
@@ -360394,60 +360746,128 @@
      }
     ]
    ],
+   "feature-policy/reporting/camera-report-only.https.html": [
+    [
+     "/feature-policy/reporting/camera-report-only.https.html",
+     {
+      "testdriver": true
+     }
+    ]
+   ],
    "feature-policy/reporting/camera-reporting.https.html": [
     [
      "/feature-policy/reporting/camera-reporting.https.html",
      {}
     ]
    ],
+   "feature-policy/reporting/document-write-report-only.html": [
+    [
+     "/feature-policy/reporting/document-write-report-only.html",
+     {}
+    ]
+   ],
    "feature-policy/reporting/document-write-reporting.html": [
     [
      "/feature-policy/reporting/document-write-reporting.html",
      {}
     ]
    ],
+   "feature-policy/reporting/encrypted-media-report-only.https.html": [
+    [
+     "/feature-policy/reporting/encrypted-media-report-only.https.html",
+     {}
+    ]
+   ],
    "feature-policy/reporting/encrypted-media-reporting.https.html": [
     [
      "/feature-policy/reporting/encrypted-media-reporting.https.html",
      {}
     ]
    ],
+   "feature-policy/reporting/fullscreen-report-only.html": [
+    [
+     "/feature-policy/reporting/fullscreen-report-only.html",
+     {
+      "testdriver": true
+     }
+    ]
+   ],
    "feature-policy/reporting/fullscreen-reporting.html": [
     [
      "/feature-policy/reporting/fullscreen-reporting.html",
      {}
     ]
    ],
+   "feature-policy/reporting/generic-sensor-report-only.https.html": [
+    [
+     "/feature-policy/reporting/generic-sensor-report-only.https.html",
+     {}
+    ]
+   ],
    "feature-policy/reporting/generic-sensor-reporting.https.html": [
     [
      "/feature-policy/reporting/generic-sensor-reporting.https.html",
      {}
     ]
    ],
+   "feature-policy/reporting/geolocation-report-only.https.html": [
+    [
+     "/feature-policy/reporting/geolocation-report-only.https.html",
+     {}
+    ]
+   ],
    "feature-policy/reporting/geolocation-reporting.https.html": [
     [
      "/feature-policy/reporting/geolocation-reporting.https.html",
      {}
     ]
    ],
+   "feature-policy/reporting/microphone-report-only.https.html": [
+    [
+     "/feature-policy/reporting/microphone-report-only.https.html",
+     {
+      "testdriver": true
+     }
+    ]
+   ],
    "feature-policy/reporting/microphone-reporting.https.html": [
     [
      "/feature-policy/reporting/microphone-reporting.https.html",
      {}
     ]
    ],
+   "feature-policy/reporting/midi-report-only.html": [
+    [
+     "/feature-policy/reporting/midi-report-only.html",
+     {}
+    ]
+   ],
    "feature-policy/reporting/midi-reporting.html": [
     [
      "/feature-policy/reporting/midi-reporting.html",
      {}
     ]
    ],
+   "feature-policy/reporting/payment-report-only.https.html": [
+    [
+     "/feature-policy/reporting/payment-report-only.https.html",
+     {}
+    ]
+   ],
    "feature-policy/reporting/payment-reporting.https.html": [
     [
      "/feature-policy/reporting/payment-reporting.https.html",
      {}
     ]
    ],
+   "feature-policy/reporting/picture-in-picture-report-only.html": [
+    [
+     "/feature-policy/reporting/picture-in-picture-report-only.html",
+     {
+      "testdriver": true
+     }
+    ]
+   ],
    "feature-policy/reporting/picture-in-picture-reporting.html": [
     [
      "/feature-policy/reporting/picture-in-picture-reporting.html",
@@ -360456,6 +360876,12 @@
      }
     ]
    ],
+   "feature-policy/reporting/sync-xhr-report-only.html": [
+    [
+     "/feature-policy/reporting/sync-xhr-report-only.html",
+     {}
+    ]
+   ],
    "feature-policy/reporting/sync-xhr-reporting.html": [
     [
      "/feature-policy/reporting/sync-xhr-reporting.html",
@@ -360468,18 +360894,38 @@
      {}
     ]
    ],
+   "feature-policy/reporting/usb-report-only.https.html": [
+    [
+     "/feature-policy/reporting/usb-report-only.https.html",
+     {
+      "testdriver": true
+     }
+    ]
+   ],
    "feature-policy/reporting/usb-reporting.https.html": [
     [
      "/feature-policy/reporting/usb-reporting.https.html",
      {}
     ]
    ],
+   "feature-policy/reporting/vr-report-only.https.html": [
+    [
+     "/feature-policy/reporting/vr-report-only.https.html",
+     {}
+    ]
+   ],
    "feature-policy/reporting/vr-reporting.https.html": [
     [
      "/feature-policy/reporting/vr-reporting.https.html",
      {}
     ]
    ],
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   ],
   "webrtc/RTCDTMFSender-helper.js": [
@@ -670866,7 +671692,7 @@
    "testharness"
   ],
   "webrtc/RTCPeerConnection-addIceCandidate.html": [
-   "1dd1350acd25ea865631c45f7345cb3d06822f3b",
+   "2283c6835e1401f3416d79a6281f25c09f1b3022",
    "testharness"
   ],
   "webrtc/RTCPeerConnection-addTrack.https.html": [
@@ -670926,7 +671752,7 @@
    "testharness"
   ],
   "webrtc/RTCPeerConnection-iceGatheringState.html": [
-   "fb9e514194b98062acc3fdd33111a2d740bb9d52",
+   "e6d8d062701a795a289ad011fa4cfae143a342e9",
    "testharness"
   ],
   "webrtc/RTCPeerConnection-ondatachannel.html": [
@@ -670934,7 +671760,7 @@
    "testharness"
   ],
   "webrtc/RTCPeerConnection-onnegotiationneeded.html": [
-   "8f9ea2be7806efc18b7511d27634d4c1f5dacf0c",
+   "7e55ac3fadd046f8805174c3d9b1de92f704ca12",
    "testharness"
   ],
   "webrtc/RTCPeerConnection-ontrack.https.html": [
@@ -670966,7 +671792,7 @@
    "testharness"
   ],
   "webrtc/RTCPeerConnection-setLocalDescription-rollback.html": [
-   "0147b3185cce20c7345fe640dd6e466209d0e3ca",
+   "630f84faa47f2d8589989674a2cb6d39797520ac",
    "testharness"
   ],
   "webrtc/RTCPeerConnection-setLocalDescription.html": [
@@ -670978,7 +671804,7 @@
    "testharness"
   ],
   "webrtc/RTCPeerConnection-setRemoteDescription-offer.html": [
-   "565fddc59be02c409835749aac090db1af7a38af",
+   "cae62b24b6c180c06be87dd48ffac364427624db",
    "testharness"
   ],
   "webrtc/RTCPeerConnection-setRemoteDescription-pranswer.html": [
@@ -670990,7 +671816,7 @@
    "testharness"
   ],
   "webrtc/RTCPeerConnection-setRemoteDescription-rollback.html": [
-   "ec90e561cbcf76559356dcd46c77547fb8262dcb",
+   "c317f3e1ae690a3e0101a5c596f0108ff23e822a",
    "testharness"
   ],
   "webrtc/RTCPeerConnection-setRemoteDescription-tracks.https.html": [
@@ -671018,7 +671844,7 @@
    "support"
   ],
   "webrtc/RTCQuicStream.https.html": [
-   "b147414794ecc208c918834110f5513e5075172d",
+   "eed7cffc37fe76cee939b78c612505c31c4f17b1",
    "testharness"
   ],
   "webrtc/RTCQuicTransport-helper.js": [
diff --git a/tests/wpt/metadata/css/css-animations/parsing/animation-delay-computed.html.ini b/tests/wpt/metadata/css/css-animations/parsing/animation-delay-computed.html.ini
deleted file mode 100644
index f0e5fb9fccf..00000000000
--- a/tests/wpt/metadata/css/css-animations/parsing/animation-delay-computed.html.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[animation-delay-computed.html]
-  [Property animation-delay value '20s, 10s' computes to '20s, 10s']
-    expected: FAIL
-
-  [Property animation-delay value 'calc(2 * 3s)' computes to '6s']
-    expected: FAIL
-
-  [Property animation-delay value '-500ms' computes to '-0.5s']
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/css-animations/parsing/animation-duration-computed.html.ini b/tests/wpt/metadata/css/css-animations/parsing/animation-duration-computed.html.ini
deleted file mode 100644
index 210014a5890..00000000000
--- a/tests/wpt/metadata/css/css-animations/parsing/animation-duration-computed.html.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[animation-duration-computed.html]
-  [Property animation-duration value '20s, 10s' computes to '20s, 10s']
-    expected: FAIL
-
-  [Property animation-duration value 'calc(2 * 3s)' computes to '6s']
-    expected: FAIL
-
-  [Property animation-duration value '500ms' computes to '0.5s']
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/css-flexbox/align-content-wrap-001.html.ini b/tests/wpt/metadata/css/css-flexbox/align-content-wrap-001.html.ini
new file mode 100644
index 00000000000..12e0f627837
--- /dev/null
+++ b/tests/wpt/metadata/css/css-flexbox/align-content-wrap-001.html.ini
@@ -0,0 +1,13 @@
+[align-content-wrap-001.html]
+  [.default, .verticalWriting 10]
+    expected: FAIL
+
+  [.default, .verticalWriting 12]
+    expected: FAIL
+
+  [.default, .verticalWriting 9]
+    expected: FAIL
+
+  [.default, .verticalWriting 6]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-flexbox/align-content-wrap-002.html.ini b/tests/wpt/metadata/css/css-flexbox/align-content-wrap-002.html.ini
new file mode 100644
index 00000000000..512db4fcf03
--- /dev/null
+++ b/tests/wpt/metadata/css/css-flexbox/align-content-wrap-002.html.ini
@@ -0,0 +1,10 @@
+[align-content-wrap-002.html]
+  [.flex-horizontal, .flex-vertical 1]
+    expected: FAIL
+
+  [.flex-horizontal, .flex-vertical 5]
+    expected: FAIL
+
+  [.flex-horizontal, .flex-vertical 6]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-flexbox/align-content-wrap-003.html.ini b/tests/wpt/metadata/css/css-flexbox/align-content-wrap-003.html.ini
new file mode 100644
index 00000000000..8ae79171efe
--- /dev/null
+++ b/tests/wpt/metadata/css/css-flexbox/align-content-wrap-003.html.ini
@@ -0,0 +1,70 @@
+[align-content-wrap-003.html]
+  [.flexbox 6]
+    expected: FAIL
+
+  [.flexbox 33]
+    expected: FAIL
+
+  [.flexbox 12]
+    expected: FAIL
+
+  [.flexbox 13]
+    expected: FAIL
+
+  [.flexbox 11]
+    expected: FAIL
+
+  [.flexbox 34]
+    expected: FAIL
+
+  [.flexbox 35]
+    expected: FAIL
+
+  [.flexbox 36]
+    expected: FAIL
+
+  [.flexbox 32]
+    expected: FAIL
+
+  [.flexbox 30]
+    expected: FAIL
+
+  [.flexbox 31]
+    expected: FAIL
+
+  [.flexbox 29]
+    expected: FAIL
+
+  [.flexbox 28]
+    expected: FAIL
+
+  [.flexbox 27]
+    expected: FAIL
+
+  [.flexbox 26]
+    expected: FAIL
+
+  [.flexbox 25]
+    expected: FAIL
+
+  [.flexbox 24]
+    expected: FAIL
+
+  [.flexbox 23]
+    expected: FAIL
+
+  [.flexbox 21]
+    expected: FAIL
+
+  [.flexbox 44]
+    expected: FAIL
+
+  [.flexbox 41]
+    expected: FAIL
+
+  [.flexbox 43]
+    expected: FAIL
+
+  [.flexbox 42]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-text/writing-system/writing-system-line-break-002.html.ini b/tests/wpt/metadata/css/css-text/writing-system/writing-system-line-break-002.html.ini
new file mode 100644
index 00000000000..447719ca0bd
--- /dev/null
+++ b/tests/wpt/metadata/css/css-text/writing-system/writing-system-line-break-002.html.ini
@@ -0,0 +1,2 @@
+[writing-system-line-break-002.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-text/writing-system/writing-system-segment-break-001.html.ini b/tests/wpt/metadata/css/css-text/writing-system/writing-system-segment-break-001.html.ini
new file mode 100644
index 00000000000..7a96cf71dd7
--- /dev/null
+++ b/tests/wpt/metadata/css/css-text/writing-system/writing-system-segment-break-001.html.ini
@@ -0,0 +1,2 @@
+[writing-system-segment-break-001.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-transitions/parsing/transition-duration-computed.html.ini b/tests/wpt/metadata/css/css-transitions/parsing/transition-duration-computed.html.ini
deleted file mode 100644
index da05b3d994a..00000000000
--- a/tests/wpt/metadata/css/css-transitions/parsing/transition-duration-computed.html.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[transition-duration-computed.html]
-  [Property transition-duration value '500ms' computes to '0.5s']
-    expected: FAIL
-
-  [Property transition-duration value 'calc(2 * 3s)' computes to '6s']
-    expected: FAIL
-
-  [Property transition-duration value '20s, 10s' computes to '20s, 10s']
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/css-transitions/transitions-animatable-properties-01.html.ini b/tests/wpt/metadata/css/css-transitions/transitions-animatable-properties-01.html.ini
index 08392616318..8850ec200da 100644
--- a/tests/wpt/metadata/css/css-transitions/transitions-animatable-properties-01.html.ini
+++ b/tests/wpt/metadata/css/css-transitions/transitions-animatable-properties-01.html.ini
@@ -71,9 +71,6 @@
   [text-indent intermediate]
     expected: FAIL
 
-  [border-top-width end]
-    expected: FAIL
-
-  [border-bottom-width end]
+  [opacity end]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/css/filter-effects/backdrop-filter-clip-rect.html.ini b/tests/wpt/metadata/css/filter-effects/backdrop-filter-clip-rect.html.ini
new file mode 100644
index 00000000000..3a98309a68b
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/backdrop-filter-clip-rect.html.ini
@@ -0,0 +1,2 @@
+[backdrop-filter-clip-rect.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/filter-effects/parsing/backdrop-filter-computed.html.ini b/tests/wpt/metadata/css/filter-effects/parsing/backdrop-filter-computed.html.ini
deleted file mode 100644
index b89270eb2c2..00000000000
--- a/tests/wpt/metadata/css/filter-effects/parsing/backdrop-filter-computed.html.ini
+++ /dev/null
@@ -1,85 +0,0 @@
-[backdrop-filter-computed.html]
-  [Property backdrop-filter value 'blur(10px) url("https://www.example.com/picture.svg#f") contrast(20) brightness(30)' computes to 'blur(10px) url("https://www.example.com/picture.svg#f") contrast(20) brightness(30)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'contrast()' computes to 'contrast(1)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'grayscale(50%)' computes to 'grayscale(0.5)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'opacity(100%)' computes to 'opacity(1)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'invert()' computes to 'invert(0)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'saturate(0)' computes to 'saturate(0)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'invert(0)' computes to 'invert(0)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'hue-rotate()' computes to 'hue-rotate(0deg)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'drop-shadow(1px 2px)' computes to 'drop-shadow(rgb(0, 255, 0) 1px 2px 0px)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'brightness(0)' computes to 'brightness(0)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'opacity()' computes to 'opacity(1)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'brightness(300%)' computes to 'brightness(3)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'blur()' computes to 'blur(0px)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'sepia()' computes to 'sepia(1)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'grayscale()' computes to 'grayscale(1)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'sepia(100%)' computes to 'sepia(1)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'sepia(0)' computes to 'sepia(0)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'brightness()' computes to 'brightness(0)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'invert(100%)' computes to 'invert(1)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'saturate(300%)' computes to 'saturate(3)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'hue-rotate(90deg)' computes to 'hue-rotate(90deg)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'contrast(0)' computes to 'contrast(0)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'none' computes to 'none']
-    expected: FAIL
-
-  [Property backdrop-filter value 'contrast(300%)' computes to 'contrast(3)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'drop-shadow(rgb(4, 5, 6) 1px 2px 0px)' computes to 'drop-shadow(rgb(4, 5, 6) 1px 2px 0px)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'opacity(0)' computes to 'opacity(0)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'saturate()' computes to 'saturate(1)']
-    expected: FAIL
-
-  [Property backdrop-filter value 'blur(100px)' computes to 'blur(100px)']
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/filter-effects/parsing/filter-computed.html.ini b/tests/wpt/metadata/css/filter-effects/parsing/filter-computed.html.ini
index 06721ce5928..cf8a1a8765b 100644
--- a/tests/wpt/metadata/css/filter-effects/parsing/filter-computed.html.ini
+++ b/tests/wpt/metadata/css/filter-effects/parsing/filter-computed.html.ini
@@ -1,79 +1,31 @@
 [filter-computed.html]
-  [Property filter value 'invert(0)' computes to 'invert(0)']
-    expected: FAIL
-
-  [Property filter value 'brightness(0)' computes to 'brightness(0)']
-    expected: FAIL
-
-  [Property filter value 'invert(100%)' computes to 'invert(1)']
-    expected: FAIL
-
-  [Property filter value 'sepia(0)' computes to 'sepia(0)']
-    expected: FAIL
-
-  [Property filter value 'saturate(0)' computes to 'saturate(0)']
-    expected: FAIL
-
-  [Property filter value 'contrast(0)' computes to 'contrast(0)']
-    expected: FAIL
-
-  [Property filter value 'hue-rotate(90deg)' computes to 'hue-rotate(90deg)']
-    expected: FAIL
-
   [Property filter value 'brightness()' computes to 'brightness(0)']
     expected: FAIL
 
-  [Property filter value 'blur(100px)' computes to 'blur(100px)']
-    expected: FAIL
-
   [Property filter value 'sepia()' computes to 'sepia(1)']
     expected: FAIL
 
-  [Property filter value 'grayscale(50%)' computes to 'grayscale(0.5)']
-    expected: FAIL
-
   [Property filter value 'saturate()' computes to 'saturate(1)']
     expected: FAIL
 
   [Property filter value 'grayscale()' computes to 'grayscale(1)']
     expected: FAIL
 
-  [Property filter value 'contrast(300%)' computes to 'contrast(3)']
-    expected: FAIL
-
-  [Property filter value 'none' computes to 'none']
-    expected: FAIL
-
-  [Property filter value 'brightness(300%)' computes to 'brightness(3)']
-    expected: FAIL
-
   [Property filter value 'invert()' computes to 'invert(0)']
     expected: FAIL
 
   [Property filter value 'hue-rotate()' computes to 'hue-rotate(0deg)']
     expected: FAIL
 
-  [Property filter value 'opacity(0)' computes to 'opacity(0)']
-    expected: FAIL
-
-  [Property filter value 'opacity(100%)' computes to 'opacity(1)']
-    expected: FAIL
-
   [Property filter value 'drop-shadow(1px 2px)' computes to 'drop-shadow(rgb(0, 255, 0) 1px 2px 0px)']
     expected: FAIL
 
-  [Property filter value 'sepia(100%)' computes to 'sepia(1)']
-    expected: FAIL
-
   [Property filter value 'blur()' computes to 'blur(0px)']
     expected: FAIL
 
   [Property filter value 'drop-shadow(rgb(4, 5, 6) 1px 2px 0px)' computes to 'drop-shadow(rgb(4, 5, 6) 1px 2px 0px)']
     expected: FAIL
 
-  [Property filter value 'saturate(300%)' computes to 'saturate(3)']
-    expected: FAIL
-
   [Property filter value 'blur(10px) url("https://www.example.com/picture.svg#f") contrast(20) brightness(30)' computes to 'blur(10px) url("https://www.example.com/picture.svg#f") contrast(20) brightness(30)']
     expected: FAIL
 
diff --git a/tests/wpt/metadata/css/geometry/interfaces.html.ini b/tests/wpt/metadata/css/geometry/interfaces.html.ini
index fc7bf385e0f..01d6a39eb03 100644
--- a/tests/wpt/metadata/css/geometry/interfaces.html.ini
+++ b/tests/wpt/metadata/css/geometry/interfaces.html.ini
@@ -375,3 +375,12 @@
   [Geometry APIs interface IDL tests]
     expected: FAIL
 
+  [DOMMatrixReadOnly interface: calling scaleNonUniform(unrestricted double, unrestricted double) on new DOMMatrixReadOnly() with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [DOMMatrixReadOnly interface: new DOMMatrixReadOnly() must inherit property "scaleNonUniform(unrestricted double, unrestricted double)" with the proper type]
+    expected: FAIL
+
+  [DOMMatrixReadOnly interface: operation scaleNonUniform(unrestricted double, unrestricted double)]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/geometry/interfaces.worker.js.ini b/tests/wpt/metadata/css/geometry/interfaces.worker.js.ini
index 994ddcf717a..3d74ff822d0 100644
--- a/tests/wpt/metadata/css/geometry/interfaces.worker.js.ini
+++ b/tests/wpt/metadata/css/geometry/interfaces.worker.js.ini
@@ -98,3 +98,12 @@
   [interfaces]
     expected: FAIL
 
+  [DOMMatrixReadOnly interface: calling scaleNonUniform(unrestricted double, unrestricted double) on new DOMMatrixReadOnly() with too few arguments must throw TypeError]
+    expected: FAIL
+
+  [DOMMatrixReadOnly interface: new DOMMatrixReadOnly() must inherit property "scaleNonUniform(unrestricted double, unrestricted double)" with the proper type]
+    expected: FAIL
+
+  [DOMMatrixReadOnly interface: operation scaleNonUniform(unrestricted double, unrestricted double)]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/selectors/invalidation/is.html.ini b/tests/wpt/metadata/css/selectors/invalidation/is.html.ini
new file mode 100644
index 00000000000..6afc2497a09
--- /dev/null
+++ b/tests/wpt/metadata/css/selectors/invalidation/is.html.ini
@@ -0,0 +1,19 @@
+[is.html]
+  [Invalidate :is() for compound selector arguments.]
+    expected: FAIL
+
+  [Preconditions.]
+    expected: FAIL
+
+  [Test specificity of :is().]
+    expected: FAIL
+
+  [Invalidate :is() for complex selector arguments.]
+    expected: FAIL
+
+  [Invalidate :is() for simple selector arguments.]
+    expected: FAIL
+
+  [Invalidate nested :is().]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/selectors/is-nested.html.ini b/tests/wpt/metadata/css/selectors/is-nested.html.ini
new file mode 100644
index 00000000000..d18898442a3
--- /dev/null
+++ b/tests/wpt/metadata/css/selectors/is-nested.html.ini
@@ -0,0 +1,7 @@
+[is-nested.html]
+  [Test nested :is() chooses highest specificity for class outside :is().]
+    expected: FAIL
+
+  [Test nested :is() specificity for class within arguments.]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/selectors/is-specificity.html.ini b/tests/wpt/metadata/css/selectors/is-specificity.html.ini
new file mode 100644
index 00000000000..96a4e2ad64d
--- /dev/null
+++ b/tests/wpt/metadata/css/selectors/is-specificity.html.ini
@@ -0,0 +1,4 @@
+[is-specificity.html]
+  [Test :is() uses highest possible specificity]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/encoding/single-byte-decoder.html.ini b/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
index 59aab785e91..0f798a6df5b 100644
--- a/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
+++ b/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
@@ -509,7 +509,7 @@
 
 
 [single-byte-decoder.html?XMLHttpRequest]
-  expected: CRASH
+  expected: TIMEOUT
   [ISO-8859-2: iso_8859-2:1987 (XMLHttpRequest)]
     expected: FAIL
 
@@ -532,7 +532,7 @@
     expected: FAIL
 
   [windows-1252: iso_8859-1:1987 (XMLHttpRequest)]
-    expected: FAIL
+    expected: TIMEOUT
 
   [windows-1254: iso_8859-9:1989 (XMLHttpRequest)]
     expected: TIMEOUT
@@ -606,5 +606,35 @@
   [windows-1256: windows-1256 (XMLHttpRequest)]
     expected: TIMEOUT
 
+  [windows-1253: x-cp1253 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1252: latin1 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1254: cp1254 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1253: windows-1253 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1253: cp1253 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1254: l5 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1252: x-cp1252 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1252: l1 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1252: windows-1252 (XMLHttpRequest)]
+    expected: TIMEOUT
+
+  [windows-1252: us-ascii (XMLHttpRequest)]
+    expected: TIMEOUT
+
 
 [single-byte-decoder.html?TextDecoder]
diff --git a/tests/wpt/metadata/fetch/api/headers/headers-no-cors.window.js.ini b/tests/wpt/metadata/fetch/api/headers/headers-no-cors.window.js.ini
index c303da569b9..6c1059dbd29 100644
--- a/tests/wpt/metadata/fetch/api/headers/headers-no-cors.window.js.ini
+++ b/tests/wpt/metadata/fetch/api/headers/headers-no-cors.window.js.ini
@@ -20,3 +20,15 @@
   ["no-cors" Headers object cannot have accept/012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678 as header]
     expected: FAIL
 
+  ["no-cors" Headers object cannot have content-type set to text/plain;ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss, text/plain]
+    expected: FAIL
+
+  ["no-cors" Headers object cannot have accept set to sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss, , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss]
+    expected: FAIL
+
+  ["no-cors" Headers object cannot have accept-language set to sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss, , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss]
+    expected: FAIL
+
+  ["no-cors" Headers object cannot have content-language set to sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss, , sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
deleted file mode 100644
index dc2e45516de..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_5.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
deleted file mode 100644
index 8cc42056d34..00000000000
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[non-active-document.html]
-  [DOMParser]
-    expected: FAIL
-
-  [createHTMLDocument]
-    expected: FAIL
-
-  [<template>]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/bailout-exception-vs-return-xml.window.js.ini b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/bailout-exception-vs-return-xml.window.js.ini
index 25f0d603b3d..2314441517b 100644
--- a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/bailout-exception-vs-return-xml.window.js.ini
+++ b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/bailout-exception-vs-return-xml.window.js.ini
@@ -9,3 +9,6 @@
   [document.open should throw an InvalidStateError with XML document even when the ignore-opens-during-unload counter is greater than 0 (during pagehide event)]
     expected: FAIL
 
+  [document.open should throw an InvalidStateError with XML document even when there is an active parser executing script]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/performance-timeline/webtiming-resolution.any.js.ini b/tests/wpt/metadata/performance-timeline/webtiming-resolution.any.js.ini
index 99a24216c88..7725b118e9d 100644
--- a/tests/wpt/metadata/performance-timeline/webtiming-resolution.any.js.ini
+++ b/tests/wpt/metadata/performance-timeline/webtiming-resolution.any.js.ini
@@ -12,3 +12,6 @@
   [Verifies the resolution of entry.startTime is at least 5 microseconds.]
     expected: TIMEOUT
 
+  [Verifies the resolution of performance.now() is at least 5 microseconds.]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/quirks/unitless-length/no-quirks.html.ini b/tests/wpt/metadata/quirks/unitless-length/limited-quirks.html.ini
similarity index 99%
rename from tests/wpt/metadata/quirks/unitless-length/no-quirks.html.ini
rename to tests/wpt/metadata/quirks/unitless-length/limited-quirks.html.ini
index 818a429ed39..c7e9c7434f5 100644
--- a/tests/wpt/metadata/quirks/unitless-length/no-quirks.html.ini
+++ b/tests/wpt/metadata/quirks/unitless-length/limited-quirks.html.ini
@@ -1,4 +1,4 @@
-[no-quirks.html]
+[limited-quirks.html]
   [top: -\\31 .5]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/quirks/unitless-length/quirks.html.ini b/tests/wpt/metadata/quirks/unitless-length/quirks.html.ini
deleted file mode 100644
index 2ed601c6ff4..00000000000
--- a/tests/wpt/metadata/quirks/unitless-length/quirks.html.ini
+++ /dev/null
@@ -1,283 +0,0 @@
-[quirks.html]
-  [top: -\\31 .5]
-    expected: FAIL
-
-  [bottom: -1A]
-    expected: FAIL
-
-  [bottom: -1a]
-    expected: FAIL
-
-  [top: @1]
-    expected: FAIL
-
-  [top: "1a"]
-    expected: FAIL
-
-  [top: @a]
-    expected: FAIL
-
-  [bottom: "1"]
-    expected: FAIL
-
-  [bottom: -/**/1]
-    expected: FAIL
-
-  [top: +/**/1]
-    expected: FAIL
-
-  [bottom: @1a]
-    expected: FAIL
-
-  [top: 1\\31 ]
-    expected: FAIL
-
-  [top: url('1')]
-    expected: FAIL
-
-  [bottom: -\\31 ]
-    expected: FAIL
-
-  [top: calc(1)]
-    expected: FAIL
-
-  [top: \\31 ]
-    expected: FAIL
-
-  [bottom: +1\\31 ]
-    expected: FAIL
-
-  [bottom: 1\\31 .5]
-    expected: FAIL
-
-  [bottom: #0001]
-    expected: FAIL
-
-  [top: calc(2 * 2px)]
-    expected: FAIL
-
-  [bottom: 1a]
-    expected: FAIL
-
-  [bottom: A]
-    expected: FAIL
-
-  [bottom: #01]
-    expected: FAIL
-
-  [top: +\\31 .5]
-    expected: FAIL
-
-  [bottom: #1]
-    expected: FAIL
-
-  [top: -/**/1]
-    expected: FAIL
-
-  [bottom: +\\31 .5]
-    expected: FAIL
-
-  [bottom: \\31 ]
-    expected: FAIL
-
-  [bottom: calc(1)]
-    expected: FAIL
-
-  [top: #001]
-    expected: FAIL
-
-  [top: +\\31 ]
-    expected: FAIL
-
-  [bottom: +\\31 ]
-    expected: FAIL
-
-  [top: +1.5]
-    expected: FAIL
-
-  [top: +1\\31 ]
-    expected: FAIL
-
-  [bottom: @a]
-    expected: FAIL
-
-  [bottom: @1]
-    expected: FAIL
-
-  [top: #1]
-    expected: FAIL
-
-  [top: 1a]
-    expected: FAIL
-
-  [bottom: +1a]
-    expected: FAIL
-
-  [bottom: +1A]
-    expected: FAIL
-
-  [bottom: "a"]
-    expected: FAIL
-
-  [top: #00001]
-    expected: FAIL
-
-  [bottom: -1\\31 .5]
-    expected: FAIL
-
-  [top: "1"]
-    expected: FAIL
-
-  [bottom: 1.5]
-    expected: FAIL
-
-  [bottom: -\\31 .5]
-    expected: FAIL
-
-  [bottom: url('1')]
-    expected: FAIL
-
-  [bottom: -1.5]
-    expected: FAIL
-
-  [top: \\31 .5]
-    expected: FAIL
-
-  [bottom: "1a"]
-    expected: FAIL
-
-  [bottom: calc(2 * 2px)]
-    expected: FAIL
-
-  [bottom: +1\\31 .5]
-    expected: FAIL
-
-  [bottom: 1\\31 ]
-    expected: FAIL
-
-  [bottom: +/**/1]
-    expected: FAIL
-
-  [bottom: #00001]
-    expected: FAIL
-
-  [top: url(1)]
-    expected: FAIL
-
-  [bottom: #001]
-    expected: FAIL
-
-  [top: +1\\31 .5]
-    expected: FAIL
-
-  [top: -1a]
-    expected: FAIL
-
-  [top: -1A]
-    expected: FAIL
-
-  [bottom: url(1)]
-    expected: FAIL
-
-  [top: a]
-    expected: FAIL
-
-  [top: A]
-    expected: FAIL
-
-  [top: #000001]
-    expected: FAIL
-
-  [top: 1]
-    expected: FAIL
-
-  [top: 1\\31 .5]
-    expected: FAIL
-
-  [bottom: a]
-    expected: FAIL
-
-  [bottom: 1]
-    expected: FAIL
-
-  [bottom: +1]
-    expected: FAIL
-
-  [bottom: #000001]
-    expected: FAIL
-
-  [bottom: +a]
-    expected: FAIL
-
-  [bottom: +A]
-    expected: FAIL
-
-  [top: 1.5]
-    expected: FAIL
-
-  [top: +A]
-    expected: FAIL
-
-  [top: +a]
-    expected: FAIL
-
-  [top: +1]
-    expected: FAIL
-
-  [top: -1.5]
-    expected: FAIL
-
-  [top: -1\\31 .5]
-    expected: FAIL
-
-  [top: +1a]
-    expected: FAIL
-
-  [top: +1A]
-    expected: FAIL
-
-  [top: @1a]
-    expected: FAIL
-
-  [bottom: \\31 .5]
-    expected: FAIL
-
-  [top: "a"]
-    expected: FAIL
-
-  [top: #01]
-    expected: FAIL
-
-  [bottom: +1.5]
-    expected: FAIL
-
-  [bottom: -A]
-    expected: FAIL
-
-  [bottom: -a]
-    expected: FAIL
-
-  [bottom: -1\\31 ]
-    expected: FAIL
-
-  [top: #0001]
-    expected: FAIL
-
-  [bottom: -1]
-    expected: FAIL
-
-  [top: -\\31 ]
-    expected: FAIL
-
-  [top: -A]
-    expected: FAIL
-
-  [top: -a]
-    expected: FAIL
-
-  [top: -1]
-    expected: FAIL
-
-  [top: -1\\31 ]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/wasm/webapi/abort.any.js.ini b/tests/wpt/metadata/wasm/webapi/abort.any.js.ini
index 0c0f8773158..87102ca31d1 100644
--- a/tests/wpt/metadata/wasm/webapi/abort.any.js.ini
+++ b/tests/wpt/metadata/wasm/webapi/abort.any.js.ini
@@ -11,6 +11,12 @@
   [compileStreaming() synchronously followed by abort should reject with AbortError]
     expected: FAIL
 
+  [compileStreaming() asynchronously racing with abort should succeed or reject with AbortError]
+    expected: FAIL
+
+  [instantiateStreaming() asynchronously racing with abort should succeed or reject with AbortError]
+    expected: FAIL
+
 
 [abort.any.html]
   [instantiateStreaming() on an already-aborted request should reject with AbortError]
@@ -25,3 +31,9 @@
   [compileStreaming() synchronously followed by abort should reject with AbortError]
     expected: FAIL
 
+  [compileStreaming() asynchronously racing with abort should succeed or reject with AbortError]
+    expected: FAIL
+
+  [instantiateStreaming() asynchronously racing with abort should succeed or reject with AbortError]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
index a56bad443a2..66bd350083b 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
@@ -1,5 +1,4 @@
 [realtimeanalyser-fft-scaling.html]
-  expected: TIMEOUT
   [X 2048-point FFT peak position is not equal to 64. Got 0.]
     expected: FAIL
 
diff --git a/tests/wpt/web-platform-tests/.taskcluster.yml b/tests/wpt/web-platform-tests/.taskcluster.yml
index bcac7f5abbc..35aad403ce7 100644
--- a/tests/wpt/web-platform-tests/.taskcluster.yml
+++ b/tests/wpt/web-platform-tests/.taskcluster.yml
@@ -149,12 +149,9 @@ tasks:
                       ${browser.name}
                       ${browser.channel};
                     cd ~/web-platform-tests;
-                    result=0;
                     ./tools/ci/taskcluster-run.py
                       --commit-range HEAD^
                       ${browser.name}
                       --
                       --channel=${browser.channel}
-                      ${operation.extra_args} || result=$?;
-                    echo $result > ../artifacts/run-return-code.txt;
-                    echo "Command exited with code $result (failures are allowed while this task is being vetted)."
+                      ${operation.extra_args};
diff --git a/tests/wpt/web-platform-tests/.travis.yml b/tests/wpt/web-platform-tests/.travis.yml
index d89fadae77d..8d4152f0285 100644
--- a/tests/wpt/web-platform-tests/.travis.yml
+++ b/tests/wpt/web-platform-tests/.travis.yml
@@ -51,8 +51,7 @@ matrix:
         apt:
           packages:
             - libnss3-tools
-      env:
-        - JOB=stability SCRIPT=tools/ci/ci_stability.sh PRODUCT=firefox:nightly
+      env: JOB=stability SCRIPT=tools/ci/ci_stability.sh PRODUCT=firefox:nightly
     - name: "stability (Chrome Dev)"
       if: type = pull_request
       os: linux
@@ -62,8 +61,7 @@ matrix:
           packages:
             - libappindicator1
             - fonts-liberation
-      env:
-        - JOB=stability SCRIPT=tools/ci/ci_stability.sh PRODUCT=chrome:dev
+      env: JOB=stability SCRIPT=tools/ci/ci_stability.sh PRODUCT=chrome:dev
     - name: "tools/ unittests (Python 2)"
       if: type = pull_request
       os: linux
@@ -103,6 +101,8 @@ matrix:
     - env:  # exclude empty env from the top-level above
   allow_failures:
     - env: JOB=build_css SCRIPT=css/build-css-testsuites.sh
+    - env: JOB=stability SCRIPT=tools/ci/ci_stability.sh PRODUCT=firefox:nightly
+    - env: JOB=stability SCRIPT=tools/ci/ci_stability.sh PRODUCT=chrome:dev
 script:
   - ./tools/ci/run.sh
 cache:
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index2.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index2.htm
index 539c824e61e..8df0af0d233 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index2.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index2.htm
@@ -10,7 +10,7 @@
 <script>
 
     var db,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0", iKey: "indexKey_0" },
                   { pKey: "primaryKey_1", iKey: "indexKey_1" } ];
 
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index3.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index3.htm
index 5adf3f077fd..ca5e0da8eae 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index3.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index3.htm
@@ -10,7 +10,7 @@
 <script type="text/javascript">
 
     var db,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0", iKey: "indexKey_0" },
                   { pKey: "primaryKey_1", iKey: "indexKey_1" } ];
 
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index5.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index5.htm
index 452c0f142f6..a9b9977d0e6 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index5.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_advance_index5.htm
@@ -11,7 +11,7 @@
 <script>
     var db,
       count = 0,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0",   iKey: "indexKey_0" },
                   { pKey: "primaryKey_1",   iKey: "indexKey_1" },
                   { pKey: "primaryKey_1-2", iKey: "indexKey_1" } ],
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_index5.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_index5.htm
index abe0e658b01..20db8d0d833 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_index5.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_index5.htm
@@ -11,7 +11,7 @@
 <script>
 
     var db,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0",   iKey: "indexKey_0" },
                   { pKey: "primaryKey_1",   iKey: "indexKey_1" },
                   { pKey: "primaryKey_1-2", iKey: "indexKey_1" },
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_index6.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_index6.htm
index cf5bd4066e8..9182b02f149 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_index6.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_index6.htm
@@ -11,7 +11,7 @@
 <script>
 
     var db,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0",   iKey: "indexKey_0" },
                   { pKey: "primaryKey_1",   iKey: "indexKey_1" },
                   { pKey: "primaryKey_1-2", iKey: "indexKey_1" },
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_invalid.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_invalid.htm
index dea07bc9112..9b4d7b70bb6 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_invalid.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_continue_invalid.htm
@@ -8,7 +8,7 @@
 <script>
 
     var db,
-      t = async_test(document.title, {timeout: 10000});
+      t = async_test(document.title);
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating.htm
index d9be6b6ad6a..f67265aa855 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating.htm
@@ -8,7 +8,7 @@
 <script>
     var db,
       count = 0,
-      t = async_test(document.title, {timeout: 10000});
+      t = async_test(document.title);
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_index.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_index.htm
index 559cce6db54..4b0fbba0937 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_index.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_index.htm
@@ -8,7 +8,7 @@
 <script>
     var db,
       count = 0,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0", obj: { iKey: "iKey_0" }},
                   { pKey: "primaryKey_1", obj: { iKey: "iKey_1" }},
                   { pKey: "primaryKey_2", obj: { iKey: "iKey_2" }} ],
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_index2.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_index2.htm
index 91a8383500c..689b8915278 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_index2.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_index2.htm
@@ -8,7 +8,7 @@
 <script>
     var db,
       count = 0,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0", obj: { iKey: "iKey_0" }},
                   { pKey: "primaryKey_2", obj: { iKey: "iKey_2" }} ],
 
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_objectstore.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_objectstore.htm
index c4c8d57148d..8a9dcfa107f 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_objectstore.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_objectstore.htm
@@ -8,7 +8,7 @@
 <script>
     var db,
       count = 0,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0" },
                   { pKey: "primaryKey_1" },
                   { pKey: "primaryKey_2" } ],
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_objectstore2.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_objectstore2.htm
index 899b2ac0e6d..992d0ea4256 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_objectstore2.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_iterating_objectstore2.htm
@@ -8,7 +8,7 @@
 <script>
     var db,
       count = 0,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       records = [ { pKey: "primaryKey_0" },
                   { pKey: "primaryKey_2" } ],
       expected_records = [ { pKey: "primaryKey_0" },
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_update_objectstore4.htm b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_update_objectstore4.htm
index cbd0b1f92a6..cb35b103509 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbcursor_update_objectstore4.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbcursor_update_objectstore4.htm
@@ -8,7 +8,7 @@
 <script>
 
     var db,
-      t = async_test(document.title, {timeout: 10000})
+      t = async_test(document.title)
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_createObjectStore10-1000ends.htm b/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_createObjectStore10-1000ends.htm
index d6e4a48ed1c..747a655ecb7 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_createObjectStore10-1000ends.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_createObjectStore10-1000ends.htm
@@ -7,7 +7,7 @@
 
 <script>
 var db,
-    t = async_test(document.title, {timeout: 600000}),
+    t = async_test(document.title),
     open_rq = createdb(t)
 
 open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_createObjectStore7.htm b/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_createObjectStore7.htm
index 358baeeecab..9833c533696 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_createObjectStore7.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_createObjectStore7.htm
@@ -7,7 +7,7 @@
 
 <script>
 
-var t = async_test(document.title, {timeout: 10000}),
+var t = async_test(document.title),
     open_rq = createdb(t)
 
 open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_deleteObjectStore4-not_reused.htm b/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_deleteObjectStore4-not_reused.htm
index 1cb6ff1ace4..5332205db7c 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_deleteObjectStore4-not_reused.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_deleteObjectStore4-not_reused.htm
@@ -8,7 +8,7 @@
 
 <script>
 
-var t = async_test(document.title, {timeout: 10000}),
+var t = async_test(document.title),
     keys = [],
     open_rq = createdb(t)
 
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_transaction4.htm b/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_transaction4.htm
index 515c499b0c8..2ba36feee70 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_transaction4.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbdatabase_transaction4.htm
@@ -7,7 +7,7 @@
 
 <script>
     var db,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       open_rq = createdb(t);
 
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbfactory_deleteDatabase3.htm b/tests/wpt/web-platform-tests/IndexedDB/idbfactory_deleteDatabase3.htm
index e1cab41a5c1..7299bfb5673 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbfactory_deleteDatabase3.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbfactory_deleteDatabase3.htm
@@ -9,7 +9,7 @@
 
 <script>
     var db
-    var open_rq = createdb(async_test(document.title, {timeout: 10000}), undefined, 9)
+    var open_rq = createdb(async_test(document.title), undefined, 9)
 
     open_rq.onupgradeneeded = function(e) {
         db = e.target.result
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open10.htm b/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open10.htm
index c0ac71ae857..0a9a12d8dfd 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open10.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open10.htm
@@ -7,7 +7,7 @@
 
 <script>
     var db, db2;
-    var open_rq = createdb(async_test(document.title, {timeout: 10000}), undefined, 9);
+    var open_rq = createdb(async_test(document.title), undefined, 9);
 
     open_rq.onupgradeneeded = function(e) {
         db = e.target.result;
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open11.htm b/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open11.htm
index 88c59bd9f65..6a77b13b088 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open11.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open11.htm
@@ -8,7 +8,7 @@
 <script>
     var db;
     var count_done = 0;
-    var open_rq = createdb(async_test(document.title, {timeout: 10000}));
+    var open_rq = createdb(async_test(document.title));
 
     open_rq.onupgradeneeded = function(e) {
         db = e.target.result;
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open12.htm b/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open12.htm
index 763c4805155..f6a13104341 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open12.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbfactory_open12.htm
@@ -7,7 +7,7 @@
 
 <script>
     var db;
-    var open_rq = createdb(async_test(document.title, {timeout: 10000}), undefined, 9);
+    var open_rq = createdb(async_test(document.title), undefined, 9);
     var open2_t = async_test(document.title + " - second upgrade");
 
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry-arraykeypath.htm b/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry-arraykeypath.htm
index 3e584a6c4e2..31ae61cfc42 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry-arraykeypath.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry-arraykeypath.htm
@@ -9,7 +9,7 @@
 <script src="support.js"></script>
 
 <script>
-    createdb(async_test(document.title, {timeout: 10000})).onupgradeneeded = function(e) {
+    createdb(async_test(document.title)).onupgradeneeded = function(e) {
         var store = e.target.result.createObjectStore("store");
 
         assert_throws('InvalidAccessError', function() {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry-big.htm b/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry-big.htm
index 4f9df36e204..f0743866910 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry-big.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry-big.htm
@@ -10,8 +10,8 @@
 
 <script>
     var db,
-        t_add = async_test("Adding one item with 1000 multiEntry keys", { timeout: 10000 }),
-        t_get = async_test("Getting the one item by 1000 indeced keys ", { timeout: 10000 });
+        t_add = async_test("Adding one item with 1000 multiEntry keys"),
+        t_get = async_test("Getting the one item by 1000 indeced keys ");
 
     var open_rq = createdb(t_add);
     var obj = { test: 'yo', idxkeys: [] };
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry.htm b/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry.htm
index 5077f48469b..6b5b06cf807 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbindex-multientry.htm
@@ -12,7 +12,7 @@
     var db,
         expected_keys = [1, 2, 2, 3, 3];
 
-    var open_rq = createdb(async_test(document.title, {timeout: 10000}))
+    var open_rq = createdb(async_test(document.title))
 
     open_rq.onupgradeneeded = function(e) {
         db = e.target.result;
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbindex_indexNames.htm b/tests/wpt/web-platform-tests/IndexedDB/idbindex_indexNames.htm
index 3099b45e91f..023903f19f7 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbindex_indexNames.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbindex_indexNames.htm
@@ -8,7 +8,7 @@
 
 <script>
     var db,
-      t = async_test(document.title, {timeout: 10000});
+      t = async_test(document.title);
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex3-usable-right-away.htm b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex3-usable-right-away.htm
index f4b9b984f05..5156e61e65f 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex3-usable-right-away.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex3-usable-right-away.htm
@@ -9,7 +9,7 @@
 
 <script>
     var db, aborted,
-      t = async_test(document.title, {timeout:19000})
+      t = async_test(document.title)
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex4-deleteIndex-event_order.htm b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex4-deleteIndex-event_order.htm
index 228dfc457c2..937ae58c3b3 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex4-deleteIndex-event_order.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex4-deleteIndex-event_order.htm
@@ -9,7 +9,7 @@
 <script>
     var db,
       events = [],
-      t = async_test(document.title, {timeout: 10000})
+      t = async_test(document.title)
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex5-emptykeypath.htm b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex5-emptykeypath.htm
index 29fadc00e3f..14ddb924ffe 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex5-emptykeypath.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex5-emptykeypath.htm
@@ -8,7 +8,7 @@
 
 <script>
     var db, aborted,
-      t = async_test(document.title, {timeout: 10000})
+      t = async_test(document.title)
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex6-event_order.htm b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex6-event_order.htm
index 3dcb7330a8a..a636226968e 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex6-event_order.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex6-event_order.htm
@@ -16,7 +16,7 @@
 
     var db,
       events = [],
-      t = async_test(document.title, {timeout: 10000})
+      t = async_test(document.title)
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex7-event_order.htm b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex7-event_order.htm
index 682307c9018..8d2725a9f0e 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex7-event_order.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex7-event_order.htm
@@ -18,7 +18,7 @@
 
     var db,
       events = [],
-      t = async_test(document.title, {timeout: 10000})
+      t = async_test(document.title)
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex8-valid_keys.htm b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex8-valid_keys.htm
index 6174523e478..ea90f50dde1 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex8-valid_keys.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_createIndex8-valid_keys.htm
@@ -9,7 +9,7 @@
 
 <script>
     var db,
-      t = async_test(document.title, {timeout:19000}),
+      t = async_test(document.title),
       now = new Date(),
       mar18 = new Date(1111111111111),
       ar = ["Yay", 2, -Infinity],
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_deleted.htm b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_deleted.htm
index 74934636a1b..c26145c1d5c 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_deleted.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbobjectstore_deleted.htm
@@ -11,7 +11,7 @@
 <script>
     var db,
       add_success = false,
-      t = async_test(document.title, {timeout: 10000})
+      t = async_test(document.title)
 
     var open_rq = createdb(t);
     open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbtransaction-oncomplete.htm b/tests/wpt/web-platform-tests/IndexedDB/idbtransaction-oncomplete.htm
index 7c295c7c150..e2cad729397 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbtransaction-oncomplete.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbtransaction-oncomplete.htm
@@ -7,7 +7,7 @@
 
 <script>
     var db, store,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       open_rq = createdb(t),
       stages = [];
 
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbtransaction_abort.htm b/tests/wpt/web-platform-tests/IndexedDB/idbtransaction_abort.htm
index 1f37bb40101..4300e2f01c8 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbtransaction_abort.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbtransaction_abort.htm
@@ -8,7 +8,7 @@
 
 <script>
     var db, aborted,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       record = { indexedProperty: "bar" };
 
     var open_rq = createdb(t);
diff --git a/tests/wpt/web-platform-tests/IndexedDB/idbversionchangeevent.htm b/tests/wpt/web-platform-tests/IndexedDB/idbversionchangeevent.htm
index 36b997f2f63..e776f14c629 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/idbversionchangeevent.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/idbversionchangeevent.htm
@@ -13,7 +13,7 @@
 <script>
 
     var db,
-        t = async_test(document.title, {timeout: 10000});
+        t = async_test(document.title);
 
     t.step(function() {
         var openrq = indexedDB.open('db', 3);
diff --git a/tests/wpt/web-platform-tests/IndexedDB/keygenerator-constrainterror.htm b/tests/wpt/web-platform-tests/IndexedDB/keygenerator-constrainterror.htm
index ee2e24799e3..205785f3bd7 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/keygenerator-constrainterror.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/keygenerator-constrainterror.htm
@@ -9,7 +9,7 @@
 <script>
 
     var db,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       objects = [1, null, {id: 2}, null, 2.00001, 5, null, {id: 6} ],
       expected = [1, 2, 2.00001, 3, 5, 6],
       errors = 0;
diff --git a/tests/wpt/web-platform-tests/IndexedDB/keygenerator-overflow.htm b/tests/wpt/web-platform-tests/IndexedDB/keygenerator-overflow.htm
index d069f0a2b5f..a7bc09fc8d5 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/keygenerator-overflow.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/keygenerator-overflow.htm
@@ -11,7 +11,7 @@
 <script>
 
     var db,
-      t = async_test(document.title, {timeout: 10000}),
+      t = async_test(document.title),
       overflow_error_fired = false,
       objects =  [9007199254740991, null, "error", 2, "error" ],
       expected_keys = [2, 9007199254740991, 9007199254740992];
diff --git a/tests/wpt/web-platform-tests/IndexedDB/keyorder.htm b/tests/wpt/web-platform-tests/IndexedDB/keyorder.htm
index 1896333f936..7f073ddb9a2 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/keyorder.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/keyorder.htm
@@ -22,7 +22,7 @@
 
     function keysort(desc, unsorted, expected) {
         var db,
-            t = async_test("Database readback sort - " + desc, { timeout: 10000 }),
+            t = async_test("Database readback sort - " + desc),
             store_name = 'store-' + Date.now() + Math.random();
 
         // The database test
diff --git a/tests/wpt/web-platform-tests/IndexedDB/keypath_maxsize.htm b/tests/wpt/web-platform-tests/IndexedDB/keypath_maxsize.htm
index 835b7a33b44..83bd9cc3138 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/keypath_maxsize.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/keypath_maxsize.htm
@@ -11,7 +11,7 @@
 <script>
     function keypath(keypath, objects, expected_keys, desc) {
         var db,
-            t = async_test(document.title + " - " + (desc ? desc : keypath), { timeout: 10000 }),
+            t = async_test(document.title + " - " + (desc ? desc : keypath)),
             open_rq = createdb(t);
 
         open_rq.onupgradeneeded = function(e) {
diff --git a/tests/wpt/web-platform-tests/IndexedDB/request_bubble-and-capture.htm b/tests/wpt/web-platform-tests/IndexedDB/request_bubble-and-capture.htm
index 319f228c835..f43fd10a34f 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/request_bubble-and-capture.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/request_bubble-and-capture.htm
@@ -9,7 +9,7 @@
 <script>
     var events = [];
 
-    var open_rq = createdb(async_test(document.title, {timeout: 10000}));
+    var open_rq = createdb(async_test(document.title));
     open_rq.onupgradeneeded = function(e) {
         var db = e.target.result;
         var txn = e.target.transaction;
diff --git a/tests/wpt/web-platform-tests/IndexedDB/transaction-lifetime-blocked.htm b/tests/wpt/web-platform-tests/IndexedDB/transaction-lifetime-blocked.htm
index b0c91ec8457..a6ef34b19cb 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/transaction-lifetime-blocked.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/transaction-lifetime-blocked.htm
@@ -11,7 +11,7 @@
 
     var db, db_got_versionchange, db2,
         events = [],
-        t = async_test(document.title, {timeout: 10000});
+        t = async_test(document.title);
 
     t.step(function() {
         var openrq = indexedDB.open('db', 3);
diff --git a/tests/wpt/web-platform-tests/IndexedDB/transaction-lifetime.htm b/tests/wpt/web-platform-tests/IndexedDB/transaction-lifetime.htm
index c646286f43a..9c66c54c40f 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/transaction-lifetime.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/transaction-lifetime.htm
@@ -11,7 +11,7 @@
 
     var db, db_got_versionchange, db2,
         events = [],
-        t = async_test(document.title, {timeout: 10000});
+        t = async_test(document.title);
 
     t.step(function() {
         var openrq = indexedDB.open('db', 3);
diff --git a/tests/wpt/web-platform-tests/IndexedDB/transaction-requestqueue.htm b/tests/wpt/web-platform-tests/IndexedDB/transaction-requestqueue.htm
index b5706fe81d7..081ea2e19a1 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/transaction-requestqueue.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/transaction-requestqueue.htm
@@ -8,7 +8,7 @@
 
 <script>
 
-var db, t = async_test(document.title, {timeout: 10000}),
+var db, t = async_test(document.title),
     keys = { txn: [], txn2: [] },
     open_rq = createdb(t)
 
diff --git a/tests/wpt/web-platform-tests/IndexedDB/transaction_bubble-and-capture.htm b/tests/wpt/web-platform-tests/IndexedDB/transaction_bubble-and-capture.htm
index f4b5ec0ae58..ff48fb48234 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/transaction_bubble-and-capture.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/transaction_bubble-and-capture.htm
@@ -9,7 +9,7 @@
 <script>
     var events = [];
 
-    var open_rq = createdb(async_test(document.title, {timeout: 10000}));
+    var open_rq = createdb(async_test(document.title));
     open_rq.onupgradeneeded = function(e) {
         var db = e.target.result;
         var txn = e.target.transaction;
diff --git a/tests/wpt/web-platform-tests/IndexedDB/writer-starvation.htm b/tests/wpt/web-platform-tests/IndexedDB/writer-starvation.htm
index 412308387fc..cdc7b1e8774 100644
--- a/tests/wpt/web-platform-tests/IndexedDB/writer-starvation.htm
+++ b/tests/wpt/web-platform-tests/IndexedDB/writer-starvation.htm
@@ -12,7 +12,7 @@
     var write_request_count = 0, write_success_count = 0;
     var RQ_COUNT = 25;
 
-    var open_rq = createdb(async_test(undefined, {timeout: 20000}));
+    var open_rq = createdb(async_test(undefined));
     open_rq.onupgradeneeded = function(e) {
         db = e.target.result;
         db.createObjectStore("s")
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-body.html b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-body.html
new file mode 100644
index 00000000000..88d888a7710
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-body.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>CSS box-shadow Test: &lt;body&gt; shadow should look the same regardless of background color</title>
+    <link rel="author" title="fmalita" href="mailto:fmalita@chromium.org">
+    <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-box-shadow">
+    <link rel="match" href="reference/box-shadow-body-ref.html">
+    <style type="text/css">
+    body {
+        position: relative;
+        box-shadow: 0 0 0 4px red;
+        height: 300px;
+        width: 600px;
+        margin: 20px auto;
+        background-color: white;
+    }
+    </style>
+</head>
+<body></body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-body-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-body-ref.html
new file mode 100644
index 00000000000..d2ae1ebd84b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-body-ref.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>CSS box-shadow Test Reference</title>
+    <link rel="author" title="fmalita" href="mailto:fmalita@chromium.org">
+    <style type="text/css">
+    html {
+        background-color: white;
+    }
+    body {
+        position: relative;
+        box-shadow: 0 0 0 4px red;
+        height: 300px;
+        width: 600px;
+        margin: 20px auto;
+    }
+    </style>
+</head>
+<body></body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-break/line-after-unbreakable-float-after-padding-ref.html b/tests/wpt/web-platform-tests/css/css-break/line-after-unbreakable-float-after-padding-ref.html
new file mode 100644
index 00000000000..9a329b24468
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/line-after-unbreakable-float-after-padding-ref.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">
+<p>The word "PASS" should be seen below.</p>
+<div style="margin-left:2ch; font-family:monospace; line-height:50px;">
+  <div style="float:left;">PA</div>
+  <div style="float:left;">SS</div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/line-after-unbreakable-float-after-padding.html b/tests/wpt/web-platform-tests/css/css-break/line-after-unbreakable-float-after-padding.html
new file mode 100644
index 00000000000..d3a4018cd80
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/line-after-unbreakable-float-after-padding.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-break-3/#unforced-breaks">
+<link rel="match" href="line-after-unbreakable-float-after-padding-ref.html">
+<p>The word "PASS" should be seen below.</p>
+<div style="columns:3; column-gap:0; column-fill:auto; font-family:monospace; line-height:50px; width:6ch; height:101px; orphans:1; widows:1;">
+  <div style="padding-top:100px;">
+    <div style="float:left; break-inside:avoid; width:100%; height:75px;">PA</div>
+    SS
+  </div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-001.html b/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-001.html
new file mode 100644
index 00000000000..1e0ce42c75f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-001.html
@@ -0,0 +1,77 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#propdef-align-content" />
+<title>css-flexbox: Tests align-content with single-line flex-wrap: wrap</title>
+<style>
+.default {
+    display: flex;
+    flex-wrap: wrap;
+    position: relative;
+    height: 70px;
+    border: 1px solid red;
+    margin: 5px;
+}
+
+.default > div {
+  height: 20px;
+}
+
+.verticalWriting {
+    display: flex;
+    flex-wrap: wrap;
+    position: relative;
+    width: 70px;
+    border: 1px solid red;
+    margin: 5px;
+    writing-mode: vertical-lr;
+}
+
+.verticalWriting > div {
+  width: 20px;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+</head>
+<body onload="checkLayout('.default, .verticalWriting'); ">
+<div id=log></div>
+<p>Test that we honor align-content even in single-line flex containers</p>
+<div class="default" style="align-content: flex-start">
+<div data-offset-y="0">This text should be at the top of its container</div>
+</div>
+<div class="default" style="align-content: flex-end">
+<div data-offset-y="50">This text should be at the bottom of its container</div>
+</div>
+<div class="default" style="align-content: center">
+<div data-offset-y="25">This text should be centered in its container</div>
+</div>
+<div class="default" style="align-content: space-between">
+<div data-offset-y="0">This text should be at the top of its container</div>
+</div>
+<div class="default" style="align-content: space-around">
+<div data-offset-y="25">This text should be centered in its container</div>
+</div>
+<div class="default" style="align-content: space-evenly">
+<div data-offset-y="25">This text should be centered in its container</div>
+</div>
+<div class="default" style="align-content: stretch">
+<div data-offset-y="0">This text should be at the top of its container</div>
+</div>
+<div class="verticalWriting" style="align-content: flex-start">
+<div data-offset-x="0">This text should be at the left of its container</div>
+</div>
+<div class="verticalWriting" style="align-content: flex-end">
+<div data-offset-x="50">This text should be at the right of its container</div>
+</div>
+<div class="verticalWriting" style="align-content: center">
+<div data-offset-x="25">This text should be centered in its container</div>
+</div>
+<div class="verticalWriting" style="align-content: space-between">
+<div data-offset-x="0">This text should be at the left of its container</div>
+</div>
+<div class="verticalWriting" style="align-content: space-around">
+<div data-offset-x="25">This text should be centered in its container</div>
+</div>
+<div class="verticalWriting" style="align-content: stretch">
+<div data-offset-x="0">This text should be at the left of its container</div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-002.html b/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-002.html
new file mode 100644
index 00000000000..a15f7ea844d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-002.html
@@ -0,0 +1,108 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#propdef-align-content" />
+<title>css-flexbox: Tests align-content with flex-wrap: wrap</title>
+<style>
+.flex-horizontal {
+    width:600px;
+    display:flex;
+    height:100px;
+    background:gray;
+    margin-bottom:100px;
+}
+.flex-vertical {
+    width:100px;
+    display:flex;
+    flex-direction: column;
+    height:600px;
+    background:gray;
+    margin-top:200px;
+    margin-bottom:100px;
+}
+.item-horizontal {
+    width:150px;
+    background:yellow;
+    margin:10px;
+    flex:none;
+}
+.item-vertical {
+    height:150px;
+    background:yellow;
+    margin:10px;
+    flex:none;
+}
+.content1-horizontal {
+    width:100px;
+    height:150px;
+    background:red;
+}
+.content2-horizontal {
+    width:100px;
+    height:100px;
+    background:red;
+}
+.content3-horizontal {
+    width:100px;
+    height:50px;
+    background:red;
+}
+.content1-vertical {
+    width:150px;
+    height:100px;
+    background:red;
+}
+.content2-vertical {
+    width:100px;
+    height:100px;
+    background:red;
+}
+.content3-vertical {
+    width:50px;
+    height:100px;
+    background:red;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+<body onload="checkLayout('.flex-horizontal, .flex-vertical');">
+<div id=log></div>
+<p>Test for crbug.com/362848: Flex box word-wrap is not adhering to spec</p>
+<div class="flex-horizontal">
+    <div class="item-horizontal" data-expected-height="80"><div class="content1-horizontal"></div></div>
+    <div class="item-horizontal" data-expected-height="80"><div class="content2-horizontal"></div></div>
+    <div class="item-horizontal" data-expected-height="80"><div class="content3-horizontal"></div></div>
+</div>
+
+<div class="flex-horizontal" style="flex-wrap:wrap;">
+    <div class="item-horizontal" data-expected-height="150"><div class="content1-horizontal"></div></div>
+    <div class="item-horizontal" data-expected-height="150"><div class="content2-horizontal"></div></div>
+    <div class="item-horizontal" data-expected-height="150"><div class="content3-horizontal"></div></div>
+</div>
+
+<div class="flex-horizontal" style="flex-wrap:wrap;">
+    <div class="item-horizontal" data-expected-height="150"><div class="content1-horizontal"></div></div>
+    <div class="item-horizontal" data-expected-height="150"><div class="content2-horizontal"></div></div>
+    <div class="item-horizontal" data-expected-height="150"><div class="content3-horizontal"></div></div>
+    <div class="item-horizontal" data-expected-height="150"><div class="content1-horizontal"></div></div>
+    <div class="item-horizontal" data-expected-height="150"><div class="content2-horizontal"></div></div>
+</div>
+
+<div class="flex-vertical">
+    <div class="item-vertical" data-expected-width="80"><div class="content1-vertical"></div></div>
+    <div class="item-vertical" data-expected-width="80"><div class="content2-vertical"></div></div>
+    <div class="item-vertical" data-expected-width="80"><div class="content3-vertical"></div></div>
+</div>
+
+<div class="flex-vertical" style="flex-wrap:wrap;">
+    <div class="item-vertical" data-expected-width="150"><div class="content1-vertical"></div></div>
+    <div class="item-vertical" data-expected-width="150"><div class="content2-vertical"></div></div>
+    <div class="item-vertical" data-expected-width="150"><div class="content3-vertical"></div></div>
+</div>
+
+<div class="flex-vertical" style="flex-wrap:wrap;">
+    <div class="item-vertical" data-expected-width="150"><div class="content1-vertical"></div></div>
+    <div class="item-vertical" data-expected-width="150"><div class="content2-vertical"></div></div>
+    <div class="item-vertical" data-expected-width="150"><div class="content3-vertical"></div></div>
+    <div class="item-vertical" data-expected-width="150"><div class="content1-vertical"></div></div>
+    <div class="item-vertical" data-expected-width="150"><div class="content2-vertical"></div></div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-003.html b/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-003.html
new file mode 100644
index 00000000000..3e07338745b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-003.html
@@ -0,0 +1,330 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#propdef-align-content" />
+<title>css-flexbox: Tests align-content with flex-wrap: wrap</title>
+<style>
+.flexbox {
+    display: flex;
+    background-color: #aaa;
+    position: relative;
+    flex-wrap: wrap;
+}
+
+.horizontal {
+    width: 200px;
+    height: 120px;
+}
+.horizontal > div {
+    min-height: 20px;
+}
+.horizontal > :nth-child(1) {
+    width: 100px;
+    min-height: 10px;
+}
+.horizontal > :nth-child(2) {
+    width: 100px;
+}
+.horizontal > :nth-child(3) {
+    width: 200px;
+}
+.horizontal > :nth-child(4) {
+    width: 50px;
+}
+
+.vertical-rl {
+    writing-mode: vertical-rl;
+    width: 120px;
+    height: 20px;
+}
+.vertical-rl > div {
+    min-width: 20px;
+}
+.vertical-rl > :nth-child(1) {
+    height: 10px;
+    min-width: 10px;
+}
+.vertical-rl > :nth-child(2) {
+    height: 10px;
+}
+.vertical-rl > :nth-child(3) {
+    height: 20px;
+}
+.vertical-rl > :nth-child(4) {
+    height: 5px;
+}
+
+.flexbox :nth-child(1) {
+    background-color: lightblue;
+}
+.flexbox :nth-child(2) {
+    background-color: lightgreen;
+}
+.flexbox :nth-child(3) {
+    background-color: pink;
+}
+.flexbox :nth-child(4) {
+    background-color: yellow;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+<body onload="checkLayout('.flexbox')">
+<div id=log></div>
+<p>Test to make sure that align-content works properly.</p>
+
+<div data-expected-height="120" class="flexbox horizontal">
+  <div data-offset-x="0" data-offset-y="0" data-expected-height="40"></div>
+  <div data-offset-x="100" data-offset-y="0" data-expected-height="40"></div>
+  <div data-offset-x="0" data-offset-y="40" data-expected-height="40"></div>
+  <div data-offset-x="0" data-offset-y="80" data-expected-height="40"></div>
+</div>
+
+<div data-expected-height="120" class="flexbox horizontal" style="align-content: flex-start">
+  <div data-offset-x="0" data-offset-y="0" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="0" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="20" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="40" data-expected-height="20"></div>
+</div>
+
+<div data-expected-height="120" class="flexbox horizontal" style="align-content: flex-end">
+  <div data-offset-x="0" data-offset-y="60" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="60" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="80" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="100" data-expected-height="20"></div>
+</div>
+
+<div data-expected-height="120" class="flexbox horizontal" style="align-content: center">
+  <div data-offset-x="0" data-offset-y="30" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="30" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="50" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="70" data-expected-height="20"></div>
+</div>
+
+<div data-expected-height="120" class="flexbox horizontal" style="align-content: space-between">
+  <div data-offset-x="0" data-offset-y="0" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="0" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="50" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="100" data-expected-height="20"></div>
+</div>
+
+<div data-expected-height="120" class="flexbox horizontal" style="align-content: space-evenly">
+  <div data-offset-x="0" data-offset-y="15" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="15" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="50" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="85" data-expected-height="20"></div>
+</div>
+
+<div data-expected-height="120" class="flexbox horizontal" style="align-content: space-around">
+  <div data-offset-x="0" data-offset-y="10" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="10" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="50" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="90" data-expected-height="20"></div>
+</div>
+
+<div data-expected-height="120" class="flexbox horizontal" style="align-content: stretch">
+  <div data-offset-x="0" data-offset-y="0" data-expected-height="40"></div>
+  <div data-offset-x="100" data-offset-y="0" data-expected-height="40"></div>
+  <div data-offset-x="0" data-offset-y="40" data-expected-height="40"></div>
+  <div data-offset-x="0" data-offset-y="80" data-expected-height="40"></div>
+</div>
+
+<!-- Negative overflow goes out the top. -->
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: flex-end; height: 30px">
+  <div data-offset-x="0" data-offset-y="-30" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="-30" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="-10" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="10" data-expected-height="20"></div>
+</div>
+
+<!-- If we overflow, we should true center. -->
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: center; height: 30px">
+  <div data-offset-x="0" data-offset-y="-15" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="-15" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="5" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="25" data-expected-height="20"></div>
+</div>
+
+<!-- If we overflow, we should be the same as flex-start. -->
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-between; height: 30px">
+  <div data-offset-x="0" data-offset-y="0" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="0" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="20" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="40" data-expected-height="20"></div>
+</div>
+
+<!-- If we overflow, we should true center. -->
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-around; height: 30px">
+  <div data-offset-x="0" data-offset-y="-15" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="-15" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="5" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="25" data-expected-height="20"></div>
+</div>
+
+<!-- If we overflow, we should true center. -->
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-evenly; height: 30px">
+  <div data-offset-x="0" data-offset-y="-15" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="-15" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="5" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="25" data-expected-height="20"></div>
+</div>
+
+<!-- Stretch should only grow, not shrink. -->
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: stretch; height: 30px">
+  <div data-offset-x="0" data-offset-y="0" data-expected-height="20"></div>
+  <div data-offset-x="100" data-offset-y="0" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="20" data-expected-height="20"></div>
+  <div data-offset-x="0" data-offset-y="40" data-expected-height="20"></div>
+</div>
+
+<!-- 0 lines should not crash. -->
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-between; height: 30px">
+</div>
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-around; height: 30px">
+</div>
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-evenly; height: 30px">
+</div>
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: stretch; height: 30px">
+</div>
+
+<!-- 1 line should not crash. -->
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-between; height: 30px">
+  <div data-offset-x="0" data-offset-y="0" data-expected-height="10"></div>
+</div>
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-around; height: 30px">
+  <div data-offset-x="0" data-offset-y="10" data-expected-height="10"></div>
+</div>
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: space-evenly; height: 30px">
+  <div data-offset-x="0" data-offset-y="10" data-expected-height="10"></div>
+</div>
+<div data-expected-height="30" class="flexbox horizontal" style="align-content: stretch; height: 30px">
+  <div data-offset-x="0" data-offset-y="0" data-expected-height="30"></div>
+</div>
+
+
+<div data-expected-width="120" class="flexbox vertical-rl">
+  <div data-offset-x="80" data-offset-y="0" data-expected-width="40"></div>
+  <div data-offset-x="80" data-offset-y="10" data-expected-width="40"></div>
+  <div data-offset-x="40" data-offset-y="0" data-expected-width="40"></div>
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="40"></div>
+</div>
+
+<div data-expected-width="120" class="flexbox vertical-rl" style="align-content: flex-start">
+  <div data-offset-x="100" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="100" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="80" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="60" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<div data-expected-width="120" class="flexbox vertical-rl" style="align-content: flex-end">
+  <div data-offset-x="40" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="40" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="20" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<div data-expected-width="120" class="flexbox vertical-rl" style="align-content: center">
+  <div data-offset-x="70" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="70" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="50" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="30" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<div data-expected-width="120" class="flexbox vertical-rl" style="align-content: space-between">
+  <div data-offset-x="100" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="100" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="50" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<div data-expected-width="120" class="flexbox vertical-rl" style="align-content: space-around">
+  <div data-offset-x="90" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="90" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="50" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="10" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<div data-expected-width="120" class="flexbox vertical-rl" style="align-content: space-evenly">
+  <div data-offset-x="85" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="85" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="50" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="15" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<div data-expected-width="120" class="flexbox vertical-rl" style="align-content: stretch">
+  <div data-offset-x="80" data-offset-y="0" data-expected-width="40"></div>
+  <div data-offset-x="80" data-offset-y="10" data-expected-width="40"></div>
+  <div data-offset-x="40" data-offset-y="0" data-expected-width="40"></div>
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="40"></div>
+</div>
+
+<!-- Negative overflow goes out the right. -->
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: flex-end; width: 30px;">
+  <div data-offset-x="40" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="40" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="20" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<!-- If we overflow, we should true center. -->
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: center; width: 30px;">
+  <div data-offset-x="25" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="25" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="5" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="-15" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<!-- If we overflow, we should be the same as flex-start. -->
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-between; width: 30px;">
+  <div data-offset-x="10" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="10" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="-10" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="-30" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<!-- If we overflow, we should true center. -->
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-around; width: 30px;">
+  <div data-offset-x="25" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="25" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="5" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="-15" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<!-- If we overflow, we should true center. -->
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-evenly; width: 30px;">
+  <div data-offset-x="25" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="25" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="5" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="-15" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<!-- Stretch should only grow, not shrink. -->
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: stretch; width: 30px;">
+  <div data-offset-x="10" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="10" data-offset-y="10" data-expected-width="20"></div>
+  <div data-offset-x="-10" data-offset-y="0" data-expected-width="20"></div>
+  <div data-offset-x="-30" data-offset-y="0" data-expected-width="20"></div>
+</div>
+
+<!-- 0 lines should not crash. -->
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-between; width: 30px">
+</div>
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-around; width: 30px">
+</div>
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-evenly; width: 30px">
+</div>
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: stretch; width: 30px">
+</div>
+
+<!-- 1 line should not crash. -->
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-between; width: 30px">
+  <div data-offset-x="20" data-offset-y="0" data-expected-width="10"></div>
+</div>
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-around; width: 30px">
+  <div data-offset-x="10" data-offset-y="0" data-expected-width="10"></div>
+</div>
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: space-evenly; width: 30px">
+  <div data-offset-x="10" data-offset-y="0" data-expected-width="10"></div>
+</div>
+<div data-expected-width="30" class="flexbox vertical-rl" style="align-content: stretch; width: 30px">
+  <div data-offset-x="0" data-offset-y="0" data-expected-width="30"></div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-004.html b/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-004.html
new file mode 100644
index 00000000000..161832190a2
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/align-content-wrap-004.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<link rel="author" title="Google LLC" href="http://www.google.com" />
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#cross-sizing" />
+<title>css-flexbox: Tests that we size items in a wrapping column flexbox as fit-content</title>
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht" />
+
+<style>
+.flex {
+  display: flex;
+  flex-wrap: wrap;
+  align-content: center;
+  flex-direction: column;
+  align-items: flex-start;
+  width: 100px;
+  line-height: 1;
+}
+.flex > div {
+  min-height: 0;
+  background: green;
+}
+.flex * {
+  vertical-align: top;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+
+<div class="flex">
+  <div style="align-self: stretch;">
+    <div style="display: inline-block; width: 20px; height: 40px;"></div>
+  </div>
+  <div style="height: 60px;">
+    <div style="display: inline-block; height: 15px; width: 20px;"></div>
+    <div style="display: inline-block; height: 15px; width: 100px;"></div>
+    <div style="display: inline-block; height: 15px; width: 100px;"></div>
+    <div style="display: inline-block; height: 15px; width: 100px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-stretch-input-range-ref.html b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-stretch-input-range-ref.html
new file mode 100644
index 00000000000..ad71302aef9
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-stretch-input-range-ref.html
@@ -0,0 +1,61 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Grid Reference: align/justify-self on range INPUT items</title>
+  <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=">
+  <style>
+html,body {
+  color:black; background-color:white; font:16px/1 monospace;
+}
+
+input {
+  margin:0;
+  padding:0;
+  border:none; /* NOTE: On Windows, GetWidgetBorder returns 1px on all sides,
+                  so we need the next declaration for the width/height to match: */
+  box-sizing: border-box;
+  width:300px;
+  height:80px;
+}
+
+.grid {
+  display: inline-grid;
+  grid: 80px / 300px;
+  place-items: stretch;
+  border:1px solid;
+}
+
+.zero { grid:0/0; }
+.zero input { width:0; height:0; }
+
+.none input { -webkit-appearance:none; }
+
+    </style>
+</head>
+<body>
+
+<div class="grid"><input type=range></div>
+<br>
+<div class="grid zero"><input type=range></div>
+<br>
+<div class="grid"><input type=range style="place-self:normal"></div>
+<br>
+<div class="grid zero"><input type=range style="place-self:normal"></div>
+<br>
+
+<div class="none">
+<div class="grid"><input type=range></div>
+<br>
+<div class="grid zero"><input type=range></div>
+<br>
+<div class="grid"><input type=range style="place-self:normal"></div>
+<br>
+<div class="grid zero"><input type=range style="place-self:normal"></div>
+</div>
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-stretch-input-range.html b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-stretch-input-range.html
new file mode 100644
index 00000000000..fb17f3a4a8b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-stretch-input-range.html
@@ -0,0 +1,58 @@
+<!DOCTYPE HTML>
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <meta charset="utf-8">
+  <title>CSS Grid Test: align/justify-self on range INPUT items</title>
+  <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=">
+  <link rel="help" href="https://drafts.csswg.org/css-align-3/#align-self-property">
+  <link rel="match" href="grid-self-alignment-stretch-input-range-ref.html">
+  <style>
+html,body {
+  color:black; background-color:white; font:16px/1 monospace;
+}
+
+input {
+  margin:0;
+  padding:0;
+  border:none;
+}
+
+.grid {
+  display: inline-grid;
+  grid: 80px / 300px;
+  place-items: stretch;
+  border:1px solid;
+}
+
+.zero { grid:0/0; }
+
+.none input { -webkit-appearance:none; }
+
+    </style>
+</head>
+<body>
+
+<div class="grid"><input type=range></div>
+<br>
+<div class="grid zero"><input type=range></div>
+<br>
+<div class="grid"><input type=range style="place-self:normal"></div>
+<br>
+<div class="grid zero"><input type=range style="place-self:normal"></div>
+<br>
+
+<div class="none">
+<div class="grid"><input type=range></div>
+<br>
+<div class="grid zero"><input type=range></div>
+<br>
+<div class="grid"><input type=range style="place-self:normal"></div>
+<br>
+<div class="grid zero"><input type=range style="place-self:normal"></div>
+</div>
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-001-ref.html b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-001-ref.html
index 31a9ef3db8e..f304cedfeab 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-001-ref.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-001-ref.html
@@ -4,6 +4,7 @@
 <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
 <style>
   .container {
+    font: 10px/1 Ahem;
     margin: 10px;
     background: grey;
   }
@@ -32,7 +33,7 @@
   }
 </style>
 
-<p>The test passes if it has the same output than the reference.</p>
+<p>The test passes if it has the same output as the reference.</p>
 
 <div style="float: left; width: 350px;">
 
diff --git a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-001.html b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-001.html
index 1b3c6eef691..b4ecd188db7 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-001.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-001.html
@@ -4,10 +4,11 @@
 <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
 <link rel="help" href="https://drafts.csswg.org/css-grid/#grid-model">
 <link rel="match" href="grid-container-scrollbar-001-ref.html">
-<meta name="assert" content="This test verifes that scrollbars are properly painted on grid containers, and are shown in the expected position depending on the direction.">
+<meta name="assert" content="This test verifies that scrollbars are properly painted on grid containers, and are shown in the expected position depending on the direction.">
 <link href="support/grid.css" rel="stylesheet">
 <style>
   .grid {
+    font: 10px/1 Ahem;
     margin: 10px;
   }
 
@@ -29,7 +30,7 @@
   }
 </style>
 
-<p>The test passes if it has the same output than the reference.</p>
+<p>The test passes if it has the same output as the reference.</p>
 
 <div style="float: left; width: 350px;">
 
diff --git a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-lr-001-ref.html b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-lr-001-ref.html
index 512fb8a81d5..e6640cc749e 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-lr-001-ref.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-lr-001-ref.html
@@ -4,6 +4,7 @@
 <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
 <style>
   .container {
+    font: 10px/1 Ahem;
     margin: 10px;
     background: grey;
     writing-mode: vertical-lr;
@@ -33,7 +34,7 @@
   }
 </style>
 
-<p>The test passes if it has the same output than the reference.</p>
+<p>The test passes if it has the same output as the reference.</p>
 
 <div style="float: left; width: 350px;">
 
diff --git a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-lr-001.html b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-lr-001.html
index ecdc7b76840..6733759cf00 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-lr-001.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-lr-001.html
@@ -4,10 +4,11 @@
 <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
 <link rel="help" href="https://drafts.csswg.org/css-grid/#grid-model">
 <link rel="match" href="grid-container-scrollbar-vertical-lr-001-ref.html">
-<meta name="assert" content="This test verifes that scrollbars are properly painted on grid containers, and are shown in the expected position depending on the direction.">
+<meta name="assert" content="This test verifies that scrollbars are properly painted on grid containers, and are shown in the expected position depending on the direction.">
 <link href="support/grid.css" rel="stylesheet">
 <style>
   .grid {
+    font: 10px/1 Ahem;
     margin: 10px;
     writing-mode: vertical-lr;
   }
@@ -30,7 +31,7 @@
   }
 </style>
 
-<p>The test passes if it has the same output than the reference.</p>
+<p>The test passes if it has the same output as the reference.</p>
 
 <div style="float: left; width: 350px;">
 
diff --git a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-rl-001-ref.html b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-rl-001-ref.html
index d8eeedfa07d..2b1bbaebb46 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-rl-001-ref.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-rl-001-ref.html
@@ -4,6 +4,7 @@
 <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
 <style>
   .container {
+    font: 10px/1 Ahem;
     margin: 10px;
     background: grey;
     writing-mode: vertical-rl;
@@ -33,7 +34,7 @@
   }
 </style>
 
-<p>The test passes if it has the same output than the reference.</p>
+<p>The test passes if it has the same output as the reference.</p>
 
 <div style="float: left; width: 350px;">
 
diff --git a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-rl-001.html b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-rl-001.html
index f2ab39ff505..a3de9386a81 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-rl-001.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/grid-model/grid-container-scrollbar-vertical-rl-001.html
@@ -4,10 +4,11 @@
 <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
 <link rel="help" href="https://drafts.csswg.org/css-grid/#grid-model">
 <link rel="match" href="grid-container-scrollbar-vertical-rl-001-ref.html">
-<meta name="assert" content="This test verifes that scrollbars are properly painted on grid containers, and are shown in the expected position depending on the direction.">
+<meta name="assert" content="This test verifies that scrollbars are properly painted on grid containers, and are shown in the expected position depending on the direction.">
 <link href="support/grid.css" rel="stylesheet">
 <style>
   .grid {
+    font: 10px/1 Ahem;
     margin: 10px;
     writing-mode: vertical-rl;
   }
@@ -30,7 +31,7 @@
   }
 </style>
 
-<p>The test passes if it has the same output than the reference.</p>
+<p>The test passes if it has the same output as the reference.</p>
 
 <div style="float: left; width: 350px;">
 
diff --git a/tests/wpt/web-platform-tests/css/css-logical/logical-values-float-clear-reftest.html b/tests/wpt/web-platform-tests/css/css-logical/logical-values-float-clear-reftest.html
new file mode 100644
index 00000000000..c0fe9a52bc4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-logical/logical-values-float-clear-reftest.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Logical Values: Flow-Relative Values for the 'float' property</title>
+<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com" />
+<link rel="help" href="https://drafts.csswg.org/css-logical/#float-clear">
+<meta name="assert" content="This test checks that the 'inline-start' and 'inline-end' values of the 'float' and 'clear' properties map to the correct physical value." />
+<link rel="match" href="reference/logical-values-float-clear-reftest-ref.html">
+<style>
+.test {
+  display: block;
+  overflow: hidden;
+  width: 300px;
+}
+.inline {
+  display: inline;
+}
+.float, .clear {
+  display: block;
+  overflow: hidden;
+  height: 3px;
+  width: 100px;
+  background: #f0f;
+}
+.clear {
+  background: #0ff;
+}
+</style>
+<body>
+<script>
+const sides = ["inline-start", "inline-end"];
+const directions = ["ltr", "rtl"];
+for (const floatSide of sides) {
+  for (const clearSide of sides) {
+    for (const containerDirection of directions) {
+      for (const inlineParentDirection of [null, ...directions]) {
+        for (const floatDirection of directions) {
+          for (const clearDirection of directions) {
+            const containerEl = document.createElement("div");
+            containerEl.className = "test";
+            containerEl.style.direction = containerDirection;
+            const floatEl = document.createElement("div");
+            floatEl.className = "float";
+            floatEl.style.direction = floatDirection;
+            floatEl.style.float = floatSide;
+            const clearEl = document.createElement("div");
+            clearEl.className = "clear";
+            clearEl.style.direction = floatDirection;
+            clearEl.style.clear = clearSide;
+            if (inlineParentDirection) {
+              const inlineParent = document.createElement("div");
+              inlineParent.className = "inline";
+              inlineParent.style.direction = inlineParentDirection;
+              inlineParent.appendChild(floatEl);
+              inlineParent.appendChild(clearEl);
+              containerEl.appendChild(inlineParent);
+            } else {
+              containerEl.appendChild(floatEl);
+              containerEl.appendChild(clearEl);
+            }
+            document.body.appendChild(containerEl);
+          }
+        }
+      }
+    }
+  }
+}
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-logical/reference/logical-values-float-clear-reftest-ref.html b/tests/wpt/web-platform-tests/css/css-logical/reference/logical-values-float-clear-reftest-ref.html
new file mode 100644
index 00000000000..28c275ebb30
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-logical/reference/logical-values-float-clear-reftest-ref.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<meta charset="utf-8" />
+<title>CSS Reftest Reference</title>
+<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com" />
+<style>
+.test {
+  display: block;
+  overflow: hidden;
+  width: 300px;
+}
+.inline {
+  display: inline;
+}
+.float, .clear {
+  display: block;
+  overflow: hidden;
+  height: 3px;
+  width: 100px;
+  background: #f0f;
+}
+.clear {
+  background: #0ff;
+}
+</style>
+<body>
+<script>
+function physicalValue(value, containerDirection) {
+  return ((value === "inline-start") === (containerDirection === "ltr")) ? "left" : "right";
+}
+const sides = ["inline-start", "inline-end"];
+const directions = ["ltr", "rtl"];
+for (const floatSide of sides) {
+  for (const clearSide of sides) {
+    for (const containerDirection of directions) {
+      for (const inlineParentDirection of [null, ...directions]) {
+        for (const floatDirection of directions) {
+          for (const clearDirection of directions) {
+            const containerEl = document.createElement("div");
+            containerEl.className = "test";
+            containerEl.style.direction = containerDirection;
+            const floatEl = document.createElement("div");
+            floatEl.className = "float";
+            floatEl.style.direction = floatDirection;
+            floatEl.style.float = physicalValue(floatSide, containerDirection);
+            const clearEl = document.createElement("div");
+            clearEl.className = "clear";
+            clearEl.style.direction = floatDirection;
+            clearEl.style.clear = physicalValue(clearSide, containerDirection);
+            if (inlineParentDirection) {
+              const inlineParent = document.createElement("div");
+              inlineParent.className = "inline";
+              inlineParent.style.direction = inlineParentDirection;
+              inlineParent.appendChild(floatEl);
+              inlineParent.appendChild(clearEl);
+              containerEl.appendChild(inlineParent);
+            } else {
+              containerEl.appendChild(floatEl);
+              containerEl.appendChild(clearEl);
+            }
+            document.body.appendChild(containerEl);
+          }
+        }
+      }
+    }
+  }
+}
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-logical/resources/test-logical-values.js b/tests/wpt/web-platform-tests/css/css-logical/resources/test-logical-values.js
index c34b4ee9f91..7a039379cbd 100644
--- a/tests/wpt/web-platform-tests/css/css-logical/resources/test-logical-values.js
+++ b/tests/wpt/web-platform-tests/css/css-logical/resources/test-logical-values.js
@@ -21,27 +21,7 @@ export function runTests(property, values) {
       style.cssText = "";
       style.setProperty(property, value);
       testCSSValues("logical values in inline style", style, [[property, value]]);
+      testComputedValues("logical values in computed style", style, [[property, value]]);
     }, `Test that '${property}: ${value}' is supported.`);
-
-    const camelCase = value.replace(/-(.)/g, (match, $1) => $1.toUpperCase());
-    for (const writingMode of writingModes) {
-      for (const style of writingMode.styles) {
-        const writingModeDecl = makeDeclaration(style);
-        test(function() {
-          const physicalSide = writingMode[camelCase];
-          let expected;
-          if (physicalSide === writingMode.lineLeft) {
-            expected = "left";
-          } else if (physicalSide === writingMode.lineRight) {
-            expected = "right";
-          } else {
-            expected = physicalSide;
-          }
-          testComputedValues(`computed value`,
-                             `.test { ${writingModeDecl} }`,
-                             [[property, expected]]);
-        }, `Test '${property}: ${value}' with '${writingModeDecl}'.`);
-      }
-    }
   }
 }
diff --git a/tests/wpt/web-platform-tests/css/css-properties-values-api/var-reference-registered-properties.html b/tests/wpt/web-platform-tests/css/css-properties-values-api/var-reference-registered-properties.html
index 5de6d20f11b..166754574fa 100644
--- a/tests/wpt/web-platform-tests/css/css-properties-values-api/var-reference-registered-properties.html
+++ b/tests/wpt/web-platform-tests/css/css-properties-values-api/var-reference-registered-properties.html
@@ -2,6 +2,7 @@
 <link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api/#dom-css-registerproperty" />
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="./resources/utils.js"></script>
 <style>
 div {
     --registered-length-1: 10px;
@@ -135,4 +136,38 @@ test(function(){
     element.style = '';
 }, 'Lists with relative units are absolutized when substituting');
 
+function test_valid_fallback(syntax, value, fallback) {
+    test(function(){
+        let name = generate_property(syntax);
+        try {
+            element.style = `${name}: ${value}; --x:var(${name},${fallback})`;
+            let computedStyle = getComputedStyle(element);
+            assert_equals(computedStyle.getPropertyValue('--x'), value);
+        } finally {
+            element.style = '';
+        }
+    }, `Valid fallback does not invalidate var()-reference [${syntax}, ${fallback}]`);
+}
+
+function test_invalid_fallback(syntax, value, fallback) {
+    test(function(){
+        let name = generate_property(syntax);
+        try {
+            element.style = `${name}: ${value}; --x:var(${name},${fallback})`;
+            let computedStyle = getComputedStyle(element);
+            assert_equals(computedStyle.getPropertyValue('--x'), '');
+        } finally {
+            element.style = '';
+        }
+    }, `Invalid fallback invalidates var()-reference [${syntax}, ${fallback}]`);
+}
+
+test_valid_fallback('<length>', '40px', '10px');
+test_valid_fallback('<length> | <color>', '40px', 'red');
+test_valid_fallback('<length> | none', '40px', 'none');
+
+test_invalid_fallback('<length>', '40px', 'red');
+test_invalid_fallback('<length> | none', '40px', 'nolength');
+test_invalid_fallback('<length>', '40px', 'var(--novar)');
+
 </script>
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-font-001-ref.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-font-001-ref.html
new file mode 100644
index 00000000000..f0bd7fe2629
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-font-001-ref.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test reference</title>
+<link rel=author title="Ambrose Li" href="http://port.ambroseli.ca/">
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+
+<p>The test passes if the word pairs below are all displayed in the same font.
+
+<table>
+  <tr>
+    <td>ping4 on1
+    <td>salaam
+    <td>shalom
+  <tr>
+    <td>ping4 on1
+    <td>salaam
+    <td>shalom
+</table>
+
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-line-break-001-ref.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-line-break-001-ref.html
new file mode 100644
index 00000000000..6ff3ef1e646
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-line-break-001-ref.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test reference</title>
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+<style>
+div {
+  font-family: monospace;
+}
+</style>
+
+<p>The test passes if the first line below ends with a hyphen.
+
+<div lang=ja-Latn>Fushimi&#x2010;<br>ku</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-line-break-002-ref.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-line-break-002-ref.html
new file mode 100644
index 00000000000..2855797d355
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-line-break-002-ref.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test reference</title>
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+<style>
+</style>
+
+<p>The test passes if the question mark in the phrase below is alone on the second line.
+
+<div lang=en-Hrkt>ハロー、ハウアーユー<br>？</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-segment-break-001-ref.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-segment-break-001-ref.html
new file mode 100644
index 00000000000..f451a74a51d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-segment-break-001-ref.html
@@ -0,0 +1,10 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test reference</title>
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+
+<p>The test passes if the both lines are identical, including the spacing of the characters.
+
+<div lang=ain-Kana>“アイヌイタㇰ”</div>
+<div lang=ain-Kana>“アイヌイタㇰ”</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-text-transform-001-ref.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-text-transform-001-ref.html
new file mode 100644
index 00000000000..9b50fb13312
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/reference/writing-system-text-transform-001-ref.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test reference</title>
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+<style>
+div {
+  font-size: 3em;
+}
+</style>
+<p>Test passes if the two words below are identical: there must be a dot on the “i” letter at the beginning of the word.
+<div lang=tr-Cyrl>iстанбул</div>
+<div lang=tr-Cyrl>iстанбул</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-font-001.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-font-001.html
new file mode 100644
index 00000000000..a8d4549279b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-font-001.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test: font selection and writing sytem</title>
+<link rel=author title="Ambrose Li" href="http://port.ambroseli.ca/">
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#languages">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#script-tagging">
+<link rel=help href="https://drafts.csswg.org/css-fonts-4/#language-specific-support">
+<link rel=match href="reference/writing-system-font-001-ref.html">
+<meta name=assert content="An explicit writing system takes precedence over the content language for font selection">
+
+<p>The test passes if the word pairs below are all displayed in the same font.
+
+<table>
+  <tr>
+    <td>ping4 on1
+    <td>salaam
+    <td>shalom
+  <tr>
+    <td><span lang=zh-yue-latn>ping4 on1</span>
+    <td><span lang=ar-latn>salaam</span>
+    <td><span lang=he-latn>shalom</span>
+</table>
+
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-line-break-001.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-line-break-001.html
new file mode 100644
index 00000000000..4ecb5ae7734
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-line-break-001.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test: writing system and line breaking</title>
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#languages">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#script-tagging">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#propdef-line-break">
+<link rel=match href="reference/writing-system-line-break-001-ref.html">
+<meta name=assert content="breaks before hyphens when line-break is loose are allowed if the content language is Japanese,
+but not when the writing system is Latin.">
+<style>
+div {
+  font-family: monospace;
+  width: 7ch;
+  line-break: loose;
+}
+</style>
+
+<p>The test passes if the first line below ends with a hyphen.
+
+<div lang=ja-Latn>Fushimi&#x2010;ku</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-line-break-002.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-line-break-002.html
new file mode 100644
index 00000000000..a973560a6e2
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-line-break-002.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test: writing system and line breaking</title>
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#languages">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#script-tagging">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#propdef-line-break">
+<link rel=match href="reference/writing-system-line-break-002-ref.html">
+<meta name=assert content="breaks before U+FF1F when line-break is loose are allowed
+if the writing system is Japanese (which includes Hrkt),
+but even when the language not Japanese.">
+<style>
+div {
+  width: 10em;
+  line-break: loose;
+}
+</style>
+
+<p>The test passes if the question mark in the phrase below is alone on the second line.
+
+<div lang=en-Hrkt>ハロー、ハウアーユー？</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-segment-break-001.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-segment-break-001.html
new file mode 100644
index 00000000000..1d560d9f497
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-segment-break-001.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test: writing system and segment break transformation</title>
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#languages">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#script-tagging">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#line-break-transform">
+<link rel=match href="reference/writing-system-segment-break-001-ref.html">
+<meta name=assert content="If the writing system of the segment break is Chinese, Japanese, or Yi,
+and the character before or after the segment break is punctuation or a symbol (Unicode general category P* or S*)
+and has an East Asian Width property of A or is Emoji,
+and the character on the other side of the segment break is F, W, or H, and not Hangul or Emoji,
+then the segment break is removed.">
+<!--
+In this case, checking with “ and ” which are punctuation with East Asian Width of A,
+next to Katakana letters (which are W),
+while the writing system is Katakana, which is classified as Japanese,
+despite a non Japanese content language (Ainu).
+-->
+
+<p>The test passes if the both lines are identical, including the spacing of the characters.
+
+<div lang=ain-Kana>“
+アイヌイタㇰ
+”</div>
+<div lang=ain-Kana>“アイヌイタㇰ”</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-text-transform-001.html b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-text-transform-001.html
new file mode 100644
index 00000000000..209d56c9514
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text/writing-system/writing-system-text-transform-001.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<html lang=en>
+<meta charset=utf-8>
+<title>CSS test: text-transform and writing systems</title>
+<link rel=author title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#languages">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#script-tagging">
+<link rel=help href="https://drafts.csswg.org/css-text-3/#propdef-text-transform">
+<link rel=match href="reference/writing-system-text-transform-001-ref.html">
+<meta name=assert content="text transform rules that depend on the language are overriden by a contradicting explicit script tag.">
+<style>
+div {
+  text-transform: lowercase;
+  font-size: 3em;
+}
+</style>
+<p>Test passes if the two words below are identical: there must be a dot on the “i” letter at the beginning of the word.
+<div lang=tr-Cyrl>IСТАНБУЛ</div>
+<div lang=tr-Cyrl>iстанбул</div>
diff --git a/tests/wpt/web-platform-tests/css/css-transforms/animation/resources/interpolation-testcommon.js b/tests/wpt/web-platform-tests/css/css-transforms/animation/resources/interpolation-testcommon.js
index 3791b0af9db..73ce9ceefb3 100644
--- a/tests/wpt/web-platform-tests/css/css-transforms/animation/resources/interpolation-testcommon.js
+++ b/tests/wpt/web-platform-tests/css/css-transforms/animation/resources/interpolation-testcommon.js
@@ -11,6 +11,28 @@ function test_interpolation(settings, expectations, name) {
     return 'cubic-bezier(0, ' + y + ', 1, ' + y + ')';
   }
 
+  function RoundMatrix(style) {
+    var matrixMatch = style.match(/^(matrix(3d)?)\(.+\)$/);
+    if (!!matrixMatch) {
+      var matrixType = matrixMatch[1];
+      var matrixArgs = style.substr(matrixType.length);
+      var extractmatrix = function(matrixStr) {
+        var list = [];
+        var regex = /[+\-]?[0-9]+[.]?[0-9]*(e[+/-][0-9]+)?/g;
+        var match = undefined;
+        do {
+          match = regex.exec(matrixStr);
+          if (match) {
+            list.push(parseFloat(parseFloat(match[0]).toFixed(6)));
+          }
+        } while (match);
+        return list;
+      }
+      return matrixType + '(' + extractmatrix(matrixArgs).join(', ') + ')';
+    }
+    return style;
+  }
+
   test(function(){
     assert_true(CSS.supports(settings.property, settings.from), 'Value "' + settings.from + '" is supported by ' + settings.property);
     assert_true(CSS.supports(settings.property, settings.to), 'Value "' + settings.to + '" is supported by ' + settings.property);
@@ -49,7 +71,9 @@ function test_interpolation(settings, expectations, name) {
       document.body.appendChild(reference);
       reference.style = '';
 
-      assert_equals(getComputedStyle(target)[settings.property], getComputedStyle(reference)[settings.property]);
+      var observed = RoundMatrix(getComputedStyle(target)[settings.property]);
+      var expected = RoundMatrix(getComputedStyle(reference)[settings.property]);
+      assert_equals(observed, expected);
     }, message_prefix + 'Animation between "' + settings.from + '" and "' + settings.to + '" at progress ' + progress);
   }
 }
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic-background-color.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic-background-color.html
index c8d1a3ede5d..39febb17d2d 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic-background-color.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic-background-color.html
@@ -28,7 +28,6 @@
     height: 100px;
     left: 50px;
     top: 50px;
-    -webkit-backdrop-filter: invert(1);
     backdrop-filter: invert(1);
     opacity: 0.5;
     background: blue;
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic-opacity.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic-opacity.html
index 23e40a7ccdd..e3ad8a20afa 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic-opacity.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic-opacity.html
@@ -28,7 +28,6 @@
     height: 100px;
     left: 50px;
     top: 50px;
-    -webkit-backdrop-filter: invert(1);
     backdrop-filter: invert(1);
     opacity: 0.5;
 }
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic.html
index 8f24c9b44a4..711064e4de3 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-basic.html
@@ -28,7 +28,6 @@
     height: 100px;
     left: 50px;
     top: 50px;
-    -webkit-backdrop-filter: invert(1);
     backdrop-filter: invert(1);
     opacity: 1.0;
 }
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-border-radius.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-border-radius.html
index d6d1f4b8130..fc212501ad5 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-border-radius.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-border-radius.html
@@ -29,7 +29,6 @@ div {
 }
 .filter {
   opacity: 0.7;
-  -webkit-backdrop-filter: invert(1);
   backdrop-filter: invert(1);
 }
 </style>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-clip-rect-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-clip-rect-ref.html
new file mode 100644
index 00000000000..a51d81f8519
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-clip-rect-ref.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>backdrop-filter: Clip the filter at border box of element</title>
+<link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org">
+
+
+
+<div>
+  <p>Expected: A green box, blurred inside the short, wide white box with a<br>
+  blue border, and not blurred anywhere else. In particular, there should be<br>
+  no blurring inside the tall, narrow white box, or anywhere outside that.</p>
+</div>
+<div class="box"></div>
+<div class="navbar"></div>
+<div class="menu"></div>
+
+<style>
+div {
+  position: absolute;
+}
+.box {
+  width: 200px;
+  height: 200px;
+  top: 100px;
+  left: 100px;
+  background: green;
+}
+.navbar {
+  width: 300px;
+  height: 50px;
+  top: 150px;
+  left: 50px;
+  border: 1px solid blue;
+  backdrop-filter: blur(20px);
+}
+.menu {
+  width: 100px;
+  height: 150px;
+  top: 201px;
+  left: 146px;
+  border: 1px solid blue;
+}
+</style>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-clip-rect.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-clip-rect.html
new file mode 100644
index 00000000000..8b5d9f4e34f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-clip-rect.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>backdrop-filter: Clip the filter at border box of element</title>
+<link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty">
+<link rel="match"  href="backdrop-filter-paint-order-ref.html">
+
+<div>
+  <p>Expected: A green box, blurred inside the short, wide white box with a<br>
+  blue border, and not blurred anywhere else. In particular, there should be<br>
+  no blurring inside the tall, narrow white box, or anywhere outside that.</p>
+</div>
+<div class="box"></div>
+<div class="navbar">
+  <div class="menu"></div>
+</div>
+<style>
+div {
+  position: absolute;
+}
+.box {
+  width: 200px;
+  height: 200px;
+  top: 100px;
+  left: 100px;
+  background: green;
+}
+.navbar {
+  width: 300px;
+  height: 50px;
+  top: 150px;
+  left: 50px;
+  border: 1px solid blue;
+  backdrop-filter: blur(20px);
+}
+.menu {
+  width: 100px;
+  height: 150px;
+  top: 50px;
+  left: 95px;
+  border: 1px solid blue;
+}
+</style>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-edge-pixels-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-edge-pixels-ref.html
new file mode 100644
index 00000000000..1960435775c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-edge-pixels-ref.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>backdrop-filter: Edge pixels shouldn't get filtered</title>
+<link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org">
+
+
+
+<div class="box"></div>
+<div style="position:absolute;top:100px;">
+  <p>Expected above: A pure white box with a blue border.<br>
+  No dark/black should be observed within the white box.</p>
+</div>
+
+<style>
+.box {
+  position: absolute;
+  width: 100px;
+  height: 100px;
+  top: 0px;
+  left: 0px;
+  border: 1px solid blue;
+
+
+}
+</style>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-edge-pixels.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-edge-pixels.html
new file mode 100644
index 00000000000..1e29d725ebc
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-edge-pixels.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>backdrop-filter: Edge pixels shouldn't get filtered</title>
+<link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty">
+<link rel="match"  href="backdrop-filter-edge-pixels-ref.html">
+
+<div class="box"></div>
+<div style="position:absolute;top:100px;">
+  <p>Expected above: A pure white box with a blue border.<br>
+  No dark/black should be observed within the white box.</p>
+</div>
+
+<style>
+.box {
+  position: absolute;
+  width: 100px;
+  height: 100px;
+  top: 0px;
+  left: 0px;
+  border: 1px solid blue;
+  backdrop-filter: blur(30px);
+}
+</style>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-isolation-isolate.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-isolation-isolate.html
index dba157c87c7..99fa69d03fa 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-isolation-isolate.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-isolation-isolate.html
@@ -35,7 +35,6 @@ div {
   top: 30px;
   left: -90px;
   opacity: 0.3;
-  -webkit-backdrop-filter: invert(1);
   backdrop-filter: invert(1);
   background: yellow;
 }
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-isolation.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-isolation.html
index dc7bd107c32..e41772578e5 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-isolation.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-isolation.html
@@ -35,7 +35,6 @@ div {
   top: 30px;
   left: -90px;
   opacity: 0.3;
-  -webkit-backdrop-filter: invert(1);
   backdrop-filter: invert(1);
   background: yellow;
 }
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-paint-order-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-paint-order-ref.html
new file mode 100644
index 00000000000..bd82e520f0e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-paint-order-ref.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>backdrop-filter: Only filter objects painted before</title>
+<link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org">
+
+
+
+<div>
+  <p>Expected: A pure white box with a blue border, surrounded by green.<br>
+  No green should be observed within the white box.<br>
+  No dark/black should be observed within the white box either.</p>
+</div>
+
+<div class="filterbox"></div>
+<div class="greenbox top"></div>
+<div class="greenbox right"></div>
+<div class="greenbox bottom"></div>
+<style>
+.filterbox {
+  position: absolute;
+  width: 100px;
+  height: 100px;
+  top: 150px;
+  left: 0px;
+  border: 1px solid blue;
+
+
+}
+.greenbox {
+  position:absolute;
+  width: 150px;
+  height: 50px;
+  background: green;
+}
+.top {
+  top:100px;
+  left: 10px;
+}
+.right {
+  top:130px;
+  left: 102px;
+  width: 58px;
+  height: 150px;
+}
+.bottom {
+  top:252px;
+  left: 10px;
+}
+</style>
+
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-paint-order.html b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-paint-order.html
new file mode 100644
index 00000000000..88531532fc3
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/backdrop-filter-paint-order.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>backdrop-filter: Only filter objects painted before</title>
+<link rel="author" title="Mason Freed" href="mailto:masonfreed@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty">
+<link rel="match"  href="backdrop-filter-paint-order-ref.html">
+
+<div>
+  <p>Expected: A pure white box with a blue border, surrounded by green.<br>
+  No green should be observed within the white box.<br>
+  No dark/black should be observed within the white box either.</p>
+</div>
+
+<div class="filterbox"></div>
+<div class="greenbox top"></div>
+<div class="greenbox right"></div>
+<div class="greenbox bottom"></div>
+<style>
+.filterbox {
+  position: absolute;
+  width: 100px;
+  height: 100px;
+  top: 150px;
+  left: 0px;
+  border: 1px solid blue;
+  backdrop-filter: blur(20px);
+}
+.greenbox {
+  position:absolute;
+  width: 150px;
+  height: 50px;
+  background: green;
+}
+.top {
+  top:100px;
+  left: 10px;
+}
+.right {
+  top:130px;
+  left: 102px;
+  width: 58px;
+  height: 150px;
+}
+.bottom {
+  top:252px;
+  left: 10px;
+}
+</style>
+
diff --git a/tests/wpt/web-platform-tests/css/selectors/invalidation/matches.html b/tests/wpt/web-platform-tests/css/selectors/invalidation/is.html
similarity index 84%
rename from tests/wpt/web-platform-tests/css/selectors/invalidation/matches.html
rename to tests/wpt/web-platform-tests/css/selectors/invalidation/is.html
index 634ded3c7d7..0d905dcd4f6 100644
--- a/tests/wpt/web-platform-tests/css/selectors/invalidation/matches.html
+++ b/tests/wpt/web-platform-tests/css/selectors/invalidation/is.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title>CSS Selectors Invalidation: :matches()</title>
+    <title>CSS Selectors Invalidation: :is()</title>
     <link rel="author" title="Victoria Su" href="mailto:victoriaytsu@google.com">
     <link rel="help" href="https://drafts.csswg.org/selectors-4/#matches">
-    <meta name="assert" content="This tests that the :matches() selector is effective">
+    <meta name="assert" content="This tests that the :is() selector is effective">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
     <style>
@@ -12,18 +12,18 @@
         color: yellow;
       }
       /*Simple selector arguments */
-      .a :matches(.b, .c) {
+      .a :is(.b, .c) {
         color: red;
       }
       /*Compound selector arguments */
-      .a :matches(.c#d, .e) {
+      .a :is(.c#d, .e) {
         color: green;
       }
       /* Complex selector arguments */
       .a .g>.b {
         color: black;
       }
-      .a :matches(.e+.f, .g>.b, .h) {
+      .a :is(.e+.f, .g>.b, .h) {
         color: blue;
       }
       .g>.b {
@@ -39,7 +39,7 @@
       .c>.a+.e {
         color: black;
       }
-      .a+:matches(.b+.f, :matches(.c>.e, .g)) {
+      .a+:is(.b+.f, :is(.c>.e, .g)) {
         color: red;
       }
       .c>.e {
@@ -108,32 +108,32 @@
         assert_equals(getComputedStyle(b1).color, red);
         assert_equals(getComputedStyle(b3).color, red);
         assert_equals(getComputedStyle(c1).color, red);
-      }, "Invalidate :matches() for simple selector arguments.");
+      }, "Invalidate :is() for simple selector arguments.");
 
       test(() => {
         a1.className = "a";
         assert_equals(getComputedStyle(d).color, green);
-      }, "Invalidate :matches() for compound selector arguments.");
+      }, "Invalidate :is() for compound selector arguments.");
 
       test(() => {
         a1.className = "a";
         assert_equals(getComputedStyle(b2).color, blue);
         assert_equals(getComputedStyle(b3).color, red);
         assert_equals(getComputedStyle(f1).color, blue);
-      }, "Invalidate :matches() for complex selector arguments.");
+      }, "Invalidate :is() for complex selector arguments.");
 
       test(() => {
         a1.className = "a";
         assert_equals(getComputedStyle(e2).color, black);
         a2.className = "a";
         assert_equals(getComputedStyle(e2).color, red);
-      }, "Invalidate nested :matches().");
+      }, "Invalidate nested :is().");
 
       test(() => {
         a1.className = "a";
         assert_equals(getComputedStyle(b2).color, blue);
         assert_equals(getComputedStyle(h1).color, black);
-      }, "Test specificity of :matches().");
+      }, "Test specificity of :is().");
     </script>
   </body>
 </html>
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/css/selectors/invalidation/where.html b/tests/wpt/web-platform-tests/css/selectors/invalidation/where.html
index 1c6432f46eb..170398300f0 100644
--- a/tests/wpt/web-platform-tests/css/selectors/invalidation/where.html
+++ b/tests/wpt/web-platform-tests/css/selectors/invalidation/where.html
@@ -33,7 +33,7 @@
       :where(.a>:where(.g+.h, .b)~.i) {
         color: blue;
       }
-      :where(:matches(.a~.h)) {
+      :where(:is(.a~.h)) {
         color: yellow;
       }
     </style>
diff --git a/tests/wpt/web-platform-tests/css/selectors/matches-nested.html b/tests/wpt/web-platform-tests/css/selectors/is-nested.html
similarity index 74%
rename from tests/wpt/web-platform-tests/css/selectors/matches-nested.html
rename to tests/wpt/web-platform-tests/css/selectors/is-nested.html
index b82d43d0901..7c3973ae058 100644
--- a/tests/wpt/web-platform-tests/css/selectors/matches-nested.html
+++ b/tests/wpt/web-platform-tests/css/selectors/is-nested.html
@@ -1,31 +1,31 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title>CSS Selectors: :matches()</title>
+    <title>CSS Selectors: :is()</title>
     <link rel="author" title="Victoria Su" href="mailto:victoriaytsu@google.com">
     <link rel="help" href="https://drafts.csswg.org/selectors-4/#matches">
-    <meta name="assert" content="This tests that the :matches() selector is effective when nested">
+    <meta name="assert" content="This tests that the :is() selector is effective when nested">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
     <style>
-      /* Testing that highest specificity is chosen for class outside of :matches() */
+      /* Testing that highest specificity is chosen for class outside of :is() */
       .a+.b+.c>.e+.d {
         color: black;
         font-size: 10px;
         width: 10px;
       }
-      .a+:matches(.b+.f, .b+:matches(*, .c>.e, .g, *))+.d {
+      .a+:is(.b+.f, .b+:is(*, .c>.e, .g, *))+.d {
         color: red;
         font-size: 20px;
       }
       .a+.b+.c>.e+.d {
         color: yellow;
       }
-      /* Testing specificty of a class within :matches() */
+      /* Testing specificty of a class within :is() */
       .a+.c>.e {
         color: black;
       }
-      .a+:matches(.b+.f, :matches(.c>.e, .g)) {
+      .a+:is(.b+.f, :is(.c>.e, .g)) {
         color: red;
       }
       .c>.e {
@@ -61,11 +61,11 @@
         assert_equals(getComputedStyle(d1).color, yellow);
         assert_equals(getComputedStyle(d1).fontSize, "20px");
         assert_equals(getComputedStyle(d1).width, "10px");
-      }, "Test nested :matches() chooses highest specificity for class outside :matches().");
+      }, "Test nested :is() chooses highest specificity for class outside :is().");
 
       test(() => {
         assert_equals(getComputedStyle(e1).color, red);
-      }, "Test nested :matches() specificity for class within arguments.");
+      }, "Test nested :is() specificity for class within arguments.");
 
     </script>
   </body>
diff --git a/tests/wpt/web-platform-tests/css/selectors/matches-specificity.html b/tests/wpt/web-platform-tests/css/selectors/is-specificity.html
similarity index 76%
rename from tests/wpt/web-platform-tests/css/selectors/matches-specificity.html
rename to tests/wpt/web-platform-tests/css/selectors/is-specificity.html
index 41d7251a3d7..bf3dbc6bb9f 100644
--- a/tests/wpt/web-platform-tests/css/selectors/matches-specificity.html
+++ b/tests/wpt/web-platform-tests/css/selectors/is-specificity.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title>CSS Selectors: :matches()</title>
+    <title>CSS Selectors: :is()</title>
     <link rel="author" title="Victoria Su" href="mailto:victoriaytsu@google.com">
     <link rel="help" href="https://drafts.csswg.org/selectors-4/#matches">
-    <meta name="assert" content="This tests that the :matches() selector chooses the correct specificity">
+    <meta name="assert" content="This tests that the :is() selector chooses the correct specificity">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
     <style>
@@ -13,7 +13,7 @@
         height: 10px;
         width: 10px;
       }
-      :matches(.a, .b.c + .d, .e) + :matches(* + .p, .q.r + .s, * + .t) + #target {
+      :is(.a, .b.c + .d, .e) + :is(* + .p, .q.r + .s, * + .t) + #target {
         height: 20px;
         width: 20px;
       }
@@ -34,7 +34,7 @@
         assert_equals(getComputedStyle(target).width, "30px");
         assert_equals(getComputedStyle(target).height, "20px");
         assert_equals(getComputedStyle(target).fontSize, "10px");
-      }, "Test :matches() uses highest possible specificity");
+      }, "Test :is() uses highest possible specificity");
 
     </script>
   </body>
diff --git a/tests/wpt/web-platform-tests/css/support/computed-testcommon.js b/tests/wpt/web-platform-tests/css/support/computed-testcommon.js
index 0999418e748..2cc19c176fa 100644
--- a/tests/wpt/web-platform-tests/css/support/computed-testcommon.js
+++ b/tests/wpt/web-platform-tests/css/support/computed-testcommon.js
@@ -13,10 +13,16 @@ function test_computed_value(property, specified, computed) {
   if (!computed)
     computed = specified;
   test(() => {
+    const target = document.getElementById('target');
     if (!getComputedStyle(target)[property])
       return;
     target.style[property] = '';
     target.style[property] = specified;
     assert_equals(getComputedStyle(target)[property], computed);
+    if (computed !== specified) {
+      target.style[property] = '';
+      target.style[property] = computed;
+      assert_equals(getComputedStyle(target)[property], computed, 'computed value should round-trip');
+    }
   }, "Property " + property + " value '" + specified + "' computes to '" + computed + "'");
 }
diff --git a/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html
new file mode 100644
index 00000000000..b45d8c3d448
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/feature-policy/experimental-features/resources/common.js"></script>
+<title> 'layout-animations' Policy : violation reports from javascript
+</title>
+<body>
+<script>
+  test(() => {
+    document.policy.allowedFeatures().forEach((enabled_feature) => {
+      assert_not_equals(enabled_feature, "layout-animations");
+    });
+  },
+  "Verify 'layout-animations' is not in document's feature list.");
+
+  promise_test(async () => {
+    let promise = wait_for_violation_in_file(
+      "layout-animations",
+      "animation-property-height.js");
+    let script = document.createElement("script");
+    script.src = "/feature-policy/experimental-features/resources/" +
+                 "animation-property-height.js";
+    document.body.appendChild(script);
+    await promise;
+  },
+  "Verify that when 'layout-animations' is disabled, an 'element.animate' " +
+  "API including a keyframe that uses a blocked property generates violation " +
+  "report (linked scripts).");
+
+  promise_test(async () => {
+    let promise = wait_for_violation_in_file(
+      "layout-animations",
+      "layout-animations-disabled-violation-report-js-tentative.html");
+    let div = document.createElement("div");
+    document.body.appendChild(div);
+    div.animate([{width: "100px"}, {width: "200px"}]);
+    await promise;
+  },
+  "Verify that when 'layout-animations' is disabled, an 'element.animate' " +
+  "API including a keyframe that uses a blocked property generates violation " +
+  "report (inline scripts).");
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html.headers b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html.headers
new file mode 100644
index 00000000000..7c441bbba55
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-js-tentative.html.headers
@@ -0,0 +1 @@
+Feature-Policy: layout-animations 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html
new file mode 100644
index 00000000000..0701c50f6ca
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/feature-policy/experimental-features/resources/common.js"></script>
+<title> 'layout-animations' Policy : violation reports from CSS keyframes
+</title>
+<body>
+<script>
+  test(() => {
+    document.policy.allowedFeatures().forEach((enabled_feature) => {
+      assert_not_equals(enabled_feature, "layout-animations");
+    });
+  },
+  "Sanity-check: 'layout-animations' is not in document's feature list.");
+
+  promise_test(async () => {
+    let promise = wait_for_violation_in_file(
+      "layout-animations", null /* source not specified */);
+    let style = document.createElement("style");
+    style.innerHTML = `@keyframes animation_property_top {
+                          from { top: 0px }
+                          to { top: 100px }
+                      }`;
+    document.body.appendChild(style);
+    await promise;
+  },
+  "Verify that when 'layout-animations' is disabled, a keyframes which " +
+  "includes a blocked property generates violation report.");
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html.headers b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html.headers
new file mode 100644
index 00000000000..7c441bbba55
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-violation-report-keyframes-tentative.html.headers
@@ -0,0 +1 @@
+Feature-Policy: layout-animations 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/experimental-features/resources/animation-property-height.js b/tests/wpt/web-platform-tests/feature-policy/experimental-features/resources/animation-property-height.js
new file mode 100644
index 00000000000..79316cb488f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/experimental-features/resources/animation-property-height.js
@@ -0,0 +1,3 @@
+let div = document.createElement("div");
+document.body.appendChild(div);
+div.animate([{"height": "0px"}, {"height": "100px"}]);
diff --git a/tests/wpt/web-platform-tests/feature-policy/experimental-features/resources/common.js b/tests/wpt/web-platform-tests/feature-policy/experimental-features/resources/common.js
index 64cfca59d6c..42790b8a2e7 100644
--- a/tests/wpt/web-platform-tests/feature-policy/experimental-features/resources/common.js
+++ b/tests/wpt/web-platform-tests/feature-policy/experimental-features/resources/common.js
@@ -64,4 +64,29 @@ function wait_for_load(e) {
   return new Promise((resolve) => {
     e.addEventListener("load", resolve);
   });
-}
\ No newline at end of file
+}
+
+window.reporting_observer_instance = new ReportingObserver((reports, observer) => {
+  if (window.reporting_observer_callback) {
+    reports.forEach(window.reporting_observer_callback);
+  }
+}, {types: ["feature-policy"]});
+window.reporting_observer_instance.observe();
+window.reporting_observer_callback = null;
+
+// Waits for a violation in |feature| and source file containing |file_name|.
+function wait_for_violation_in_file(feature, file_name) {
+  return new Promise( (resolve) => {
+    assert_equals(null, window.reporting_observer_callback);
+    window.reporting_observer_callback = (report) => {
+        var feature_match = (feature === report.body.feature);
+        var file_name_match =
+            !file_name ||
+            (report.body.sourceFile.indexOf(file_name) !== -1);
+        if (feature_match && file_name_match) {
+          window.reporting_observer_callback = null;
+          resolve(report);
+        }
+    };
+  });
+}
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/camera-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/camera-report-only.https.html
new file mode 100644
index 00000000000..26488687e6f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/camera-report-only.https.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <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>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "camera");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  await test_driver.bless('Activate document for user media');
+  await navigator.mediaDevices.getUserMedia({video: true});
+  check_report_format(await report);
+}, "Camera report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/camera-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/camera-report-only.https.html.headers
new file mode 100644
index 00000000000..46b84811f55
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/camera-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: camera-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/camera-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/camera-reporting.https.html
index 14b2ed1d37c..ced585139b3 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/camera-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/camera-reporting.https.html
@@ -10,17 +10,18 @@ var t = async_test("Camera Report Format");
 
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "camera");
+  assert_equals(report.body.featureId, "camera");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 new ReportingObserver(t.step_func_done(check_report_format),
-                      {types: ['feature-policy']}).observe();
+                      {types: ['feature-policy-violation']}).observe();
 
 navigator.mediaDevices.getUserMedia({video: true}).then(
   t.unreached_func("UserMedia camera access should not be allowed in this document.")
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-report-only.html b/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-report-only.html
new file mode 100644
index 00000000000..ab0bb827166
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-report-only.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "document-write");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  document.write("This should be written into the document");
+  check_report_format(await report);
+}, "Document-write report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-report-only.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-report-only.html.headers
new file mode 100644
index 00000000000..63e43f1d719
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-report-only.html.headers
@@ -0,0 +1 @@
+Feature-Policy: document-write-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-reporting.html b/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-reporting.html
index cb08b8d72d1..93672fac35b 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-reporting.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/document-write-reporting.html
@@ -10,17 +10,18 @@ var t = async_test("Document-write Report Format");
 
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "document-write");
+  assert_equals(report.body.featureId, "document-write");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 new ReportingObserver(t.step_func_done(check_report_format),
-                      {types: ['feature-policy']}).observe();
+                      {types: ['feature-policy-violation']}).observe();
 
 t.step_func(() => {
   assert_throws('NotAllowedError',
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-report-only.https.html
new file mode 100644
index 00000000000..20e44b2fd5d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-report-only.https.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "encrypted-media");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  await navigator.requestMediaKeySystemAccess("org.w3.clearkey",
+      [{
+        initDataTypes: ["webm"],
+        videoCapabilities: [{contentType: 'video/webm;codecs="vp8"'}],
+      }]);
+  check_report_format(await report);
+}, "Encrypted Media report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-report-only.https.html.headers
new file mode 100644
index 00000000000..a2c8fbb4425
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: encrypted-media-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-reporting.https.html
index d309d5390f1..c3b63936b3a 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/encrypted-media-reporting.https.html
@@ -11,6 +11,7 @@ var check_report_format = (reports, observer) => {
   assert_equals(report.type, "feature-policy");
   assert_equals(report.url, document.location.href);
   assert_equals(report.body.feature, "encrypted-media");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
   assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-report-only.html b/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-report-only.html
new file mode 100644
index 00000000000..a6b3d5adeed
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-report-only.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <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>
+    <div id='fs'></div>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "fullscreen");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  await test_driver.bless('Activate document for fullscreen');
+  await document.getElementById('fs').requestFullscreen();
+  check_report_format(await report);
+  document.exitFullscreen();
+}, "Fullscreen report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-report-only.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-report-only.html.headers
new file mode 100644
index 00000000000..33defa88f6e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-report-only.html.headers
@@ -0,0 +1 @@
+Feature-Policy: fullscreen-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-reporting.html b/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-reporting.html
index 83d97c91fab..4190fdd1926 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-reporting.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/fullscreen-reporting.html
@@ -9,18 +9,19 @@
     <script>
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "fullscreen");
+  assert_equals(report.body.featureId, "fullscreen");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 async_test(t => {
   new ReportingObserver(t.step_func_done(check_report_format),
-                        {types: ['feature-policy']}).observe();
+                        {types: ['feature-policy-violation']}).observe();
   document.getElementById('fs').requestFullscreen().then(t.unreached_func(
     "Fullscreen should not be allowed in this document.")).catch(()=>{});
 }, "Fullscreen Report Format");
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-report-only.https.html
new file mode 100644
index 00000000000..deb6adeb736
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-report-only.https.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+var sensor_features_verified = {
+  "accelerometer": false,
+  "ambient-light-sensor": false,
+  "magnetometer": false,
+  "gyroscope": false
+};
+
+var check_report_format = function(reports, observer) {
+  // Check each report in this batch. This observer callback may be called
+  // multiple times before all reports have been processed.
+  for (const report of reports) {
+
+    // Validate that the reported feature is one of the sensor features, and that
+    // we have not seen a report for this feature before.
+    assert_true(sensor_features_verified.hasOwnProperty(report.body.feature));
+    assert_false(sensor_features_verified[report.body.feature]);
+
+    // Validate the remainder of the report
+    assert_equals(report.type, "feature-policy");
+    assert_equals(report.url, document.location.href);
+    assert_equals(report.body.disposition, "report");
+    assert_equals(report.body.sourceFile, document.location.href);
+    assert_equals(typeof report.body.message, "string");
+    assert_equals(typeof report.body.lineNumber, "number");
+    assert_equals(typeof report.body.columnNumber, "number");
+
+    sensor_features_verified[report.body.feature] = true;
+  }
+
+  // Test is only done when reports for all features have been seen
+  for (let result of Object.values(sensor_features_verified)) {
+    if (!result)
+      return;
+  }
+  this.done();
+};
+
+async_test(t => {
+  new ReportingObserver(t.step_func(check_report_format),
+                        {types: ['feature-policy']}).observe();
+  new Accelerometer();
+  new AmbientLightSensor();
+  new Gyroscope();
+  new Magnetometer();
+}, "Generic Sensor report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-report-only.https.html.headers
new file mode 100644
index 00000000000..26605eb0fa6
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: ambient-light-sensor-report-only 'none'; accelerometer-report-only 'none'; gyroscope-report-only 'none'; magnetometer-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-reporting.https.html
index c60e3e81a1d..517c7f68721 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/generic-sensor-reporting.https.html
@@ -26,6 +26,7 @@ var check_report_format = function(reports, observer) {
     // Validate the remainder of the report
     assert_equals(report.type, "feature-policy");
     assert_equals(report.url, document.location.href);
+    assert_equals(report.body.disposition, "enforce");
     assert_equals(report.body.sourceFile, document.location.href);
     assert_equals(typeof report.body.message, "string");
     assert_equals(typeof report.body.lineNumber, "number");
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-report-only.https.html
new file mode 100644
index 00000000000..cf2a75b766c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-report-only.https.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "geolocation");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  try {
+    await new Promise((resolve, reject) => {
+      navigator.geolocation.getCurrentPosition(resolve, reject);
+    });
+    check_report_format(await report);
+  } catch (err) {
+    // In case the getCurrentPosition call was rejected due to user permissions,
+    // the report should be generated anyway. Wait for it and check the format
+    // before failing this test.
+    check_report_format(await report);
+    throw err;
+  }
+}, "Geolocation report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-report-only.https.html.headers
new file mode 100644
index 00000000000..fc9859000f5
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: geolocation-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-reporting.https.html
index 22e258563b7..05445fc1f1c 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/geolocation-reporting.https.html
@@ -10,17 +10,19 @@ var t = async_test("Geolocation Report Format");
 
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "geolocation");
+  assert_equals(report.body.featureId, "geolocation");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
   assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 new ReportingObserver(t.step_func_done(check_report_format),
-                      {types: ['feature-policy']}).observe();
+                      {types: ['feature-policy-violation']}).observe();
 
 navigator.geolocation.getCurrentPosition(
   t.unreached_func("geolocation should be disabled in this document"),
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-report-only.https.html
new file mode 100644
index 00000000000..2d7b4d960d8
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-report-only.https.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <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>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "microphone");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  await test_driver.bless('Activate document for user media');
+  await navigator.mediaDevices.getUserMedia({audio: true});
+  check_report_format(await report);
+}, "Microphone report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-report-only.https.html.headers
new file mode 100644
index 00000000000..7673d05b948
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: microphone-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-reporting.https.html
index 7347a2332bc..246484fd6cf 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/microphone-reporting.https.html
@@ -10,17 +10,18 @@ var t = async_test("Microphone Report Format");
 
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "microphone");
+  assert_equals(report.body.featureId, "microphone");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 new ReportingObserver(t.step_func_done(check_report_format),
-                      {types: ['feature-policy']}).observe();
+                      {types: ['feature-policy-violation']}).observe();
 
 navigator.mediaDevices.getUserMedia({audio: true}).then(
   t.unreached_func("UserMedia microphone access should not be allowed in this document.")
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/midi-report-only.html b/tests/wpt/web-platform-tests/feature-policy/reporting/midi-report-only.html
new file mode 100644
index 00000000000..e466ce0dc41
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/midi-report-only.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "midi");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  try {
+    await navigator.requestMIDIAccess();
+    check_report_format(await report);
+  } catch (err) {
+    // In case the requestMIDIAccess call was rejected due to user permissions,
+    // the report should be generated anyway. Wait for it and check the format
+    // before failing this test.
+    check_report_format(await report);
+    throw err;
+  }
+}, "MIDI report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/midi-report-only.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/midi-report-only.html.headers
new file mode 100644
index 00000000000..3c6a2d4fbb3
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/midi-report-only.html.headers
@@ -0,0 +1 @@
+Feature-Policy: midi-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/midi-reporting.html b/tests/wpt/web-platform-tests/feature-policy/reporting/midi-reporting.html
index 8303b7adce4..c5627e5a213 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/midi-reporting.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/midi-reporting.html
@@ -8,19 +8,20 @@
     <script>
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "midi");
+  assert_equals(report.body.featureId, "midi");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 promise_test(async (t) => {
   const report = new Promise(resolve => {
     new ReportingObserver((reports, observer) => resolve([reports, observer]),
-                          {types: ['feature-policy']}).observe();
+                          {types: ['feature-policy-violation']}).observe();
   });
   await promise_rejects(t, 'SecurityError', navigator.requestMIDIAccess(),
                         "MIDI device access should not be allowed in this document.");
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/payment-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/payment-report-only.https.html
new file mode 100644
index 00000000000..6a7678b51e7
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/payment-report-only.https.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "payment");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  try {
+    const request = new PaymentRequest(
+      [{ supportedMethods: 'basic-card' }],
+      { total: { label: 'Total', amount: { currency: 'USD', value: 0 }}},
+      {});
+    await request.show()
+    check_report_format(await report);
+  } catch (err) {
+    // In case the show call was rejected, the report should be generated
+    // anyway. Wait for it and check the format before failing this test.
+    check_report_format(await report);
+    throw err;
+  }
+}, "PaymentRequest report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/payment-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/payment-report-only.https.html.headers
new file mode 100644
index 00000000000..6411478e4ca
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/payment-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: payment-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/payment-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/payment-reporting.https.html
index 03eaebea58f..828054a6caf 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/payment-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/payment-reporting.https.html
@@ -10,17 +10,18 @@ var t = async_test("PaymentRequest Report Format");
 
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "payment");
+  assert_equals(report.body.featureId, "payment");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 new ReportingObserver(t.step_func_done(check_report_format),
-                      {types: ['feature-policy']}).observe();
+                      {types: ['feature-policy-violation']}).observe();
 
 t.step_func(() => {
   assert_throws('SecurityError',
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-report-only.html b/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-report-only.html
new file mode 100644
index 00000000000..157670f2cab
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-report-only.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/common/media.js'></script>
+    <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/picture-in-picture.js'></script>
+  </head>
+  <body>
+    <script>
+const check_report_format = ([reports, observer]) => {
+  const report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "picture-in-picture");
+  assert_equals(report.body.disposition, "report");
+};
+
+const loadVideo = () => new Promise(resolve => {
+    const video = document.createElement('video');
+    video.src = getVideoURI('/media/movie_5');
+    video.addEventListener('loadedmetadata', () => {
+      resolve(video);
+    }, { once: true });
+});
+
+promise_pip_test(async (t) => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  const videoElement = await loadVideo();
+  await test_driver.bless('picture-in-picture');
+  await videoElement.requestPictureInPicture();
+  check_report_format(await report);
+}, "Picture-in-Picture report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-report-only.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-report-only.html.headers
new file mode 100644
index 00000000000..0df90a3e94a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-report-only.html.headers
@@ -0,0 +1 @@
+Feature-Policy: picture-in-picture-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-reporting.html b/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-reporting.html
index e3cbf103687..f15f47c549d 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-reporting.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/picture-in-picture-reporting.html
@@ -15,6 +15,7 @@ const check_report_format = (reports, observer) => {
   assert_equals(report.type, "feature-policy");
   assert_equals(report.url, document.location.href);
   assert_equals(report.body.feature, "picture-in-picture");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
   assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-report-only.html b/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-report-only.html
new file mode 100644
index 00000000000..f841f63d6ed
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-report-only.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+const check_report_format = ([reports, observer]) => {
+  const report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "sync-xhr");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  const xhr = new XMLHttpRequest();
+  xhr.open("GET", document.location.href, false);
+  xhr.send();
+  check_report_format(await report);
+}, "Sync-xhr report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-report-only.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-report-only.html.headers
new file mode 100644
index 00000000000..79a82cfb635
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-report-only.html.headers
@@ -0,0 +1 @@
+Feature-Policy: sync-xhr-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-reporting.html b/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-reporting.html
index 2c76390847b..82200cdfbcc 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-reporting.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/sync-xhr-reporting.html
@@ -10,17 +10,18 @@ var t = async_test("Sync-xhr Report Format");
 
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "sync-xhr");
+  assert_equals(report.body.featureId, "sync-xhr");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 new ReportingObserver(t.step_func_done(check_report_format),
-                      {types: ['feature-policy']}).observe();
+                      {types: ['feature-policy-violation']}).observe();
 
 t.step_func(() => {
   var xhr = new XMLHttpRequest();
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/unsized-media-reporting.html b/tests/wpt/web-platform-tests/feature-policy/reporting/unsized-media-reporting.html
index 8bd79318950..00a15587d44 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/unsized-media-reporting.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/unsized-media-reporting.html
@@ -9,15 +9,15 @@
     <script>
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "unsized-media");
+  assert_equals(report.body.featureId, "unsized-media");
   assert_equals(typeof report.body.message, "string");
 };
 
 async_test(t => {
   new ReportingObserver(t.step_func_done(check_report_format),
-                        {types: ['feature-policy'], buffered: true}).observe();
+                        {types: ['feature-policy-violation'], buffered: true}).observe();
 }, "Unsized-media Report Format");
     </script>
   </body>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/usb-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/usb-report-only.https.html
new file mode 100644
index 00000000000..e44c6c528fd
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/usb-report-only.https.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <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>
+    <div id='fs'></div>
+    <script>
+var check_report_format = ([reports, observer]) => {
+  let report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.body.feature, "usb");
+  assert_equals(report.body.disposition, "report");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  await test_driver.bless('Activate document for USB');
+  await navigator.usb.getDevices();
+  check_report_format(await report);
+}, "USB report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/usb-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/usb-report-only.https.html.headers
new file mode 100644
index 00000000000..bd2e3c6fe50
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/usb-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: usb-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/usb-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/usb-reporting.https.html
index f90c602e449..0ddff455537 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/usb-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/usb-reporting.https.html
@@ -10,17 +10,18 @@ var t = async_test("USB Report Format");
 
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "usb");
+  assert_equals(report.body.featureId, "usb");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 new ReportingObserver(t.step_func_done(check_report_format),
-                      {types: ['feature-policy']}).observe();
+                      {types: ['feature-policy-violation']}).observe();
 
 navigator.usb.getDevices().then(
   t.unreached_func("USB device access should not be allowed in this document.")
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/vr-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/vr-report-only.https.html
new file mode 100644
index 00000000000..91016d38853
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/vr-report-only.https.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+const check_report_format = ([reports, observer]) => {
+  const report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.url, document.location.href);
+  assert_equals(report.body.feature, "vr");
+  assert_equals(report.body.disposition, "report");
+  assert_equals(report.body.sourceFile, document.location.href);
+  assert_equals(typeof report.body.message, "string");
+  assert_equals(typeof report.body.lineNumber, "number");
+  assert_equals(typeof report.body.columnNumber, "number");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  await navigator.getVRDisplays();
+  check_report_format(await report);
+}, "VR report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/vr-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/vr-report-only.https.html.headers
new file mode 100644
index 00000000000..b54cad2af94
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/vr-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: vr-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/vr-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/vr-reporting.https.html
index 12cae052a16..e0bb6353117 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/vr-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/vr-reporting.https.html
@@ -8,19 +8,20 @@
     <script>
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "vr");
+  assert_equals(report.body.featureId, "vr");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 promise_test(async (t) => {
   const report = new Promise(resolve => {
     new ReportingObserver((reports, observer) => resolve([reports, observer]),
-                          {types: ['feature-policy']}).observe();
+                          {types: ['feature-policy-violation']}).observe();
   });
   await promise_rejects(t, 'SecurityError', navigator.getVRDisplays(),
                         "VR device access should not be allowed in this document.");
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/xr-report-only.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/xr-report-only.https.html
new file mode 100644
index 00000000000..5d4fb062c1e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/xr-report-only.https.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <script src='/resources/testharness.js'></script>
+    <script src='/resources/testharnessreport.js'></script>
+  </head>
+  <body>
+    <script>
+const check_report_format = ([reports, observer]) => {
+  const report = reports[0];
+  assert_equals(report.type, "feature-policy");
+  assert_equals(report.url, document.location.href);
+  assert_equals(report.body.feature, "vr");
+  assert_equals(report.body.disposition, "report");
+  assert_equals(report.body.sourceFile, document.location.href);
+  assert_equals(typeof report.body.message, "string");
+  assert_equals(typeof report.body.lineNumber, "number");
+  assert_equals(typeof report.body.columnNumber, "number");
+};
+
+promise_test(async t => {
+  const report = new Promise(resolve => {
+    new ReportingObserver((reports, observer) => resolve([reports, observer]),
+                          {types: ['feature-policy']}).observe();
+  });
+  try {
+    await navigator.xr.requestDevice();
+  } catch (err) {
+    // If no XR devices are available, requestDevice() will throw NotFoundError,
+    // but the report should be generated anyway.
+    assert_equals(err.name, 'NotFoundError');
+  }
+  check_report_format(await report);
+}, "XR report only mode");
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/xr-report-only.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/xr-report-only.https.html.headers
new file mode 100644
index 00000000000..b54cad2af94
--- /dev/null
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/xr-report-only.https.html.headers
@@ -0,0 +1 @@
+Feature-Policy: vr-report-only 'none'
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/xr-reporting.https.html b/tests/wpt/web-platform-tests/feature-policy/reporting/xr-reporting.https.html
index a7a122237bb..0844860ad79 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/xr-reporting.https.html
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/xr-reporting.https.html
@@ -8,19 +8,20 @@
     <script>
 var check_report_format = (reports, observer) => {
   let report = reports[0];
-  assert_equals(report.type, "feature-policy");
+  assert_equals(report.type, "feature-policy-violation");
   assert_equals(report.url, document.location.href);
-  assert_equals(report.body.feature, "vr");
+  assert_equals(report.body.featureId, "vr");
+  assert_equals(report.body.disposition, "enforce");
   assert_equals(report.body.sourceFile, document.location.href);
-  assert_equals(typeof report.body.message, "string");
   assert_equals(typeof report.body.lineNumber, "number");
   assert_equals(typeof report.body.columnNumber, "number");
+  assert_equals(report.body.disposition, "enforce");
 };
 
 promise_test(async (t) => {
   const report = new Promise(resolve => {
     new ReportingObserver((reports, observer) => resolve([reports, observer]),
-                          {types: ['feature-policy']}).observe();
+                          {types: ['feature-policy-violation']}).observe();
   });
   await promise_rejects(t, 'SecurityError', navigator.xr.requestDevice(),
                         "XR device access should not be allowed in this document.");
diff --git a/tests/wpt/web-platform-tests/feature-policy/reporting/xr-reporting.https.html.headers b/tests/wpt/web-platform-tests/feature-policy/reporting/xr-reporting.https.html.headers
index d021af75636..ea8722131ce 100644
--- a/tests/wpt/web-platform-tests/feature-policy/reporting/xr-reporting.https.html.headers
+++ b/tests/wpt/web-platform-tests/feature-policy/reporting/xr-reporting.https.html.headers
@@ -1 +1 @@
-Feature-Policy: vr 'none'
+Feature-Policy: xr 'none'
diff --git a/tests/wpt/web-platform-tests/fetch/api/headers/headers-no-cors.window.js b/tests/wpt/web-platform-tests/fetch/api/headers/headers-no-cors.window.js
index aa6562b7d37..ebf0142e280 100644
--- a/tests/wpt/web-platform-tests/fetch/api/headers/headers-no-cors.window.js
+++ b/tests/wpt/web-platform-tests/fetch/api/headers/headers-no-cors.window.js
@@ -1,5 +1,32 @@
 promise_test(() => fetch("../cors/resources/not-cors-safelisted.json").then(res => res.json().then(runTests)), "Loading data…");
 
+const longValue = "s".repeat(127);
+
+[
+  {
+    "headers": ["accept", "accept-language", "content-language"],
+    "values": [longValue, "", longValue]
+  },
+  {
+    "headers": ["content-type"],
+    "values": ["text/plain;" + "s".repeat(116), "text/plain"]
+  }
+].forEach(testItem => {
+  testItem.headers.forEach(header => {
+    test(() => {
+      const noCorsHeaders = new Request("about:blank", { mode: "no-cors" }).headers;
+      testItem.values.forEach((value) => {
+        noCorsHeaders.append(header, value);
+        assert_equals(noCorsHeaders.get(header), testItem.values[0]);
+      });
+      noCorsHeaders.set(header, values.join(", "));
+      assert_equals(noCorsHeaders.get(header), testItem.values[0]);
+      noCorsHeaders.delete(header);
+      assert_false(noCorsHeaders.has(header));
+    }, "\"no-cors\" Headers object cannot have " + header + " set to " + testItem.values.join(", "));
+  });
+});
+
 function runTests(testArray) {
   testArray = testArray.concat([
     ["dpr", "2"],
@@ -14,6 +41,8 @@ function runTests(testArray) {
       const noCorsHeaders = new Request("about:blank", { mode: "no-cors" }).headers;
       noCorsHeaders.append(headerName, headerValue);
       assert_false(noCorsHeaders.has(headerName));
+      noCorsHeaders.set(headerName, headerValue);
+      assert_false(noCorsHeaders.has(headerName));
     }, "\"no-cors\" Headers object cannot have " + headerName + "/" + headerValue + " as header");
   });
 }
diff --git a/tests/wpt/web-platform-tests/fullscreen/rendering/fullscreen-css-transition.html b/tests/wpt/web-platform-tests/fullscreen/rendering/fullscreen-css-transition.html
new file mode 100644
index 00000000000..1d50502ee3b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/fullscreen/rendering/fullscreen-css-transition.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>Transitions should not be stopped by going fullscreen</title>
+<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>
+<style>
+  #trans {
+    transition: color steps(1, end) 100s;
+    color: green;
+  }
+</style>
+<div id="trans">Should be green</div>
+<script>
+  async_test(t => {
+    document.onfullscreenchange = t.step_func_done(() => {
+      assert_equals(document.fullscreenElement, trans);
+      assert_equals(getComputedStyle(trans).color, "rgb(0, 128, 0)", "Transition is in progress - still green");
+    });
+    trans.addEventListener('click', e => {
+      trans.style.color = "red";
+      trans.offsetTop;
+      trans.requestFullscreen();
+    }, {once: true});
+    test_driver.click(trans);
+  });
+</script>
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/the-input-element/time-focus-dynamic-value-change.html b/tests/wpt/web-platform-tests/html/semantics/forms/the-input-element/time-focus-dynamic-value-change.html
new file mode 100644
index 00000000000..95ccb1ff69b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/the-input-element/time-focus-dynamic-value-change.html
@@ -0,0 +1,31 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>input type=date and input type=datetime handle focus state correctly</title>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/input.html#time-state-(type=time)">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1450219">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<input type="time">
+<input type="text">
+<script>
+let t = async_test("Time input handles focus correctly when value changes");
+window.onload = t.step_func_done(function() {
+  let time = document.querySelector("input[type=time]");
+  let text = document.querySelector("input[type=text]");
+  time.focus();
+  assert_true(time.matches(":focus"));
+  assert_equals(document.activeElement, time);
+  time.value = "08:10:10";
+  assert_true(time.matches(":focus"));
+  assert_equals(document.activeElement, time);
+  time.value = "08:10";
+  assert_true(time.matches(":focus"));
+  assert_equals(document.activeElement, time);
+  text.focus();
+  assert_true(text.matches(":focus"));
+  assert_false(time.matches(":focus"));
+  assert_equals(document.activeElement, text);
+});
+</script>
diff --git a/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/testdriver/actions/elementPosition.html.ini b/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/testdriver/actions/elementPosition.html.ini
index 8edb44d4148..6644d52d1ff 100644
--- a/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/testdriver/actions/elementPosition.html.ini
+++ b/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/testdriver/actions/elementPosition.html.ini
@@ -1,3 +1,3 @@
 [elementPosition.html]
-  [TestDriver actions: element position]
-    expected: FAIL
+  expected:
+    if product == "chrome" or product == "safari" or product == "safari_webdriver": ERROR
diff --git a/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/testdriver/actions/eventOrder.html.ini b/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/testdriver/actions/eventOrder.html.ini
index 8c60a97ad95..bfb5c0ae4bd 100644
--- a/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/testdriver/actions/eventOrder.html.ini
+++ b/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/testdriver/actions/eventOrder.html.ini
@@ -1,3 +1,3 @@
 [eventOrder.html]
-  [TestDriver actions: event order]
-    expected: FAIL
+  expected:
+    if product == "chrome" or product == "safari" or product == "safari_webdriver": ERROR
diff --git a/tests/wpt/web-platform-tests/infrastructure/testdriver/actions/elementPosition.html b/tests/wpt/web-platform-tests/infrastructure/testdriver/actions/elementPosition.html
index ab9fb31ad09..145852e7b51 100644
--- a/tests/wpt/web-platform-tests/infrastructure/testdriver/actions/elementPosition.html
+++ b/tests/wpt/web-platform-tests/infrastructure/testdriver/actions/elementPosition.html
@@ -34,7 +34,7 @@ async_test(t => {
   let div = document.getElementById("test");
   let actions = new test_driver.Actions()
     .pointerMove(0, 0, {origin: test})
-    .pointerDown(0, 0, {origin: test})
+    .pointerDown()
     .pointerUp()
     .send()
     .then(t.step_func_done(() => assert_array_equals(events, [50, 25])))
diff --git a/tests/wpt/web-platform-tests/infrastructure/testdriver/actions/eventOrder.html b/tests/wpt/web-platform-tests/infrastructure/testdriver/actions/eventOrder.html
index bd7fef41e9a..c85b861c7fd 100644
--- a/tests/wpt/web-platform-tests/infrastructure/testdriver/actions/eventOrder.html
+++ b/tests/wpt/web-platform-tests/infrastructure/testdriver/actions/eventOrder.html
@@ -17,17 +17,19 @@ let events = [];
 
 async_test(t => {
   Array.prototype.forEach.call(document.getElementsByTagName("button"),
-                               (x) => x.addEventListener("pointerdown", () => {events.push(x.id)}));
+                               (x) => x.addEventListener("mousedown", () => {events.push(x.id)}));
 
   let button_a = document.getElementById("a");
   let button_b = document.getElementById("b");
   let actions = new test_driver.Actions()
-    .addPointer("pointer1", "touch")
-    .addPointer("pointer2", "touch")
-    .pointerDown(0, 0, {origin: button_a, sourceName: "pointer1"})
-    .pointerDown(0, 0, {origin: button_b, sourceName: "pointer2"})
-    .pointerUp({sourceName: "pointer1"})
+    .addPointer("pointer1")
+    .addPointer("pointer2")
+    .pointerMove(0, 0, {origin: button_a, sourceName: "pointer1"})
+    .pointerMove(0, 0, {origin: button_b, sourceName: "pointer2"})
+    .pointerDown({sourceName: "pointer2"})
+    .pointerDown({sourceName: "pointer1"})
     .pointerUp({sourceName: "pointer2"})
+    .pointerUp({sourceName: "pointer1"})
     .send()
     .then(t.step_func_done(() => assert_array_equals(events, ["a", "b"])))
     .catch(e => t.step_func(() => assert_unreached("Actions sequence failed " + e)));
diff --git a/tests/wpt/web-platform-tests/interfaces/geometry.idl b/tests/wpt/web-platform-tests/interfaces/geometry.idl
index 733a111e38b..b5b56e78054 100644
--- a/tests/wpt/web-platform-tests/interfaces/geometry.idl
+++ b/tests/wpt/web-platform-tests/interfaces/geometry.idl
@@ -156,6 +156,8 @@ interface DOMMatrixReadOnly {
                                 optional unrestricted double originX = 0,
                                 optional unrestricted double originY = 0,
                                 optional unrestricted double originZ = 0);
+    [NewObject] DOMMatrix scaleNonUniform(optional unrestricted double scaleX = 1,
+                                          optional unrestricted double scaleY = 1);
     [NewObject] DOMMatrix scale3d(optional unrestricted double scale = 1,
                                   optional unrestricted double originX = 0,
                                   optional unrestricted double originY = 0,
diff --git a/tests/wpt/web-platform-tests/lint.whitelist b/tests/wpt/web-platform-tests/lint.whitelist
index 99b1d6a2be1..dd90081c83e 100644
--- a/tests/wpt/web-platform-tests/lint.whitelist
+++ b/tests/wpt/web-platform-tests/lint.whitelist
@@ -311,6 +311,7 @@ SET TIMEOUT: resources/test/tests/functional/add_cleanup_async_rejection.html
 SET TIMEOUT: resources/test/tests/functional/add_cleanup_async_rejection_after_load.html
 SET TIMEOUT: resources/test/tests/functional/api-tests-1.html
 SET TIMEOUT: resources/test/tests/functional/worker.js
+SET TIMEOUT: resources/test/tests/functional/worker-uncaught-allow.js
 SET TIMEOUT: resources/test/tests/unit/exceptional-cases.html
 SET TIMEOUT: resources/testharness.js
 
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-attributes.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-attributes.html
index 6af90cd9eef..b5d44b0db5d 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-attributes.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-attributes.html
@@ -32,7 +32,7 @@
                 'Exactly one attribution entry is expected');
             const attribution = longtask.attribution[0];
             assert_equals(attribution.entryType, 'taskattribution');
-            assert_equals(attribution.name, 'script');
+            assert_equals(attribution.name, 'unknown');
             assert_equals(attribution.duration, 0);
             assert_equals(attribution.startTime, 0);
             assert_equals(attribution.containerId, '');
@@ -52,4 +52,4 @@
 }, 'Performance longtask entries are observable.');
 </script>
 
-</body>
\ No newline at end of file
+</body>
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-childiframe-crossorigin.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-childiframe-crossorigin.html
index 17b0fd2412b..aaabce5d79d 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-childiframe-crossorigin.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-childiframe-crossorigin.html
@@ -33,7 +33,7 @@
                 'Exactly one attribution entry is expected');
             const attribution = longtask.attribution[0];
             assert_equals(attribution.entryType, 'taskattribution');
-            assert_equals(attribution.name, 'script');
+            assert_equals(attribution.name, 'unknown');
             assert_equals(attribution.duration, 0);
             assert_equals(attribution.startTime, 0);
             assert_equals(attribution.containerId, 'child-iframe-id');
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-childiframe.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-childiframe.html
index b7137043ad0..34b802cb696 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-childiframe.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-childiframe.html
@@ -38,7 +38,7 @@
                 'Exactly one attribution entry is expected');
             const attribution = longtask.attribution[0];
             assert_equals(attribution.entryType, 'taskattribution');
-            assert_equals(attribution.name, 'script');
+            assert_equals(attribution.name, 'unknown');
             assert_equals(attribution.duration, 0);
             assert_equals(attribution.startTime, 0);
             assert_equals(attribution.containerId, 'child-iframe-id');
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-externalscript.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-externalscript.html
index 51c58afff05..076f0f22914 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-externalscript.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-externalscript.html
@@ -29,7 +29,7 @@
                 'Exactly one attribution entry is expected');
             const attribution = longtask.attribution[0];
             assert_equals(attribution.entryType, 'taskattribution');
-            assert_equals(attribution.name, 'script');
+            assert_equals(attribution.name, 'unknown');
             assert_equals(attribution.duration, 0);
             assert_equals(attribution.startTime, 0);
             assert_equals(attribution.containerId, '');
@@ -47,4 +47,4 @@
     }
 }, 'Performance longtask entries are observable.');
 </script>
-</body>
\ No newline at end of file
+</body>
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-parentiframe.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-parentiframe.html
index 2e7a9990dd0..778edc1000f 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-parentiframe.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-parentiframe.html
@@ -15,7 +15,7 @@
     window.addEventListener('message', t.step_func(e => {
       assert_equals(e.data['entryType'], 'longtask');
       assert_equals(e.data['frame-attribution'], 'same-origin-ancestor');
-      assert_equals(e.data['task-attribution'], 'script');
+      assert_equals(e.data['task-attribution'], 'unknown');
       assert_equals(e.data['containerId'], '');
       assert_equals(e.data['containerName'], '');
       assert_equals(e.data['containerSrc'], '');
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-raf.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-raf.html
index 8a5a7290ac9..2d30ac36b96 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-raf.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-raf.html
@@ -29,7 +29,7 @@
                 'Exactly one attribution entry is expected');
             const attribution = longtask.attribution[0];
             assert_equals(attribution.entryType, 'taskattribution');
-            assert_equals(attribution.name, 'script');
+            assert_equals(attribution.name, 'unknown');
             assert_equals(attribution.duration, 0);
             assert_equals(attribution.startTime, 0);
             assert_equals(attribution.containerId, '');
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-sibling-iframe-crossorigin.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-sibling-iframe-crossorigin.html
index cfcc1895a19..b73112e3abf 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-sibling-iframe-crossorigin.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-sibling-iframe-crossorigin.html
@@ -15,7 +15,7 @@
     window.addEventListener('message', t.step_func(e => {
       assert_equals(e.data['entryType'], 'longtask');
       assert_equals(e.data['frame-attribution'], 'cross-origin-unreachable');
-      assert_equals(e.data['task-attribution'], 'script');
+      assert_equals(e.data['task-attribution'], 'unknown');
       assert_equals(e.data['containerId'], '');
       assert_equals(e.data['containerName'], '');
       assert_equals(e.data['containerSrc'], '');
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-sibling-iframe.html b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-sibling-iframe.html
index e6041e48a66..b8a4270163a 100644
--- a/tests/wpt/web-platform-tests/longtask-timing/longtask-in-sibling-iframe.html
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-in-sibling-iframe.html
@@ -15,7 +15,7 @@
     window.addEventListener('message', t.step_func(e => {
       assert_equals(e.data['entryType'], 'longtask');
       assert_equals(e.data['frame-attribution'], 'same-origin');
-      assert_equals(e.data['task-attribution'], 'script');
+      assert_equals(e.data['task-attribution'], 'unknown');
       assert_equals(e.data['containerId'], 'longtask-iframe-id');
       assert_equals(e.data['containerName'], 'longtask-iframe-name');
       assert_equals(e.data['containerSrc'], 'resources/subframe-with-longtask.html');
diff --git a/tests/wpt/web-platform-tests/pointerevents/pointerevent_pointermove.html b/tests/wpt/web-platform-tests/pointerevents/pointerevent_pointermove-manual.html
similarity index 86%
rename from tests/wpt/web-platform-tests/pointerevents/pointerevent_pointermove.html
rename to tests/wpt/web-platform-tests/pointerevents/pointerevent_pointermove-manual.html
index 4b168439a4e..cf1a1ee4ee8 100644
--- a/tests/wpt/web-platform-tests/pointerevents/pointerevent_pointermove.html
+++ b/tests/wpt/web-platform-tests/pointerevents/pointerevent_pointermove-manual.html
@@ -7,9 +7,6 @@
         <link rel="stylesheet" type="text/css" href="pointerevent_styles.css">
         <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>
         <!-- Additional helper script for common checks across event types -->
         <script type="text/javascript" src="pointerevent_support.js"></script>
     </head>
@@ -35,9 +32,6 @@
                         eventTested = true;
                     }
                 });
-
-                // Inject the inputs to run this test.
-                new test_driver.Actions().pointerMove(0, 0, {origin: target0}).send();
             }
         </script>
         <h1>Pointer Events pointermove Tests</h1>
diff --git a/tests/wpt/web-platform-tests/resources/test/tests/functional/worker-dedicated-uncaught-allow.html b/tests/wpt/web-platform-tests/resources/test/tests/functional/worker-dedicated-uncaught-allow.html
new file mode 100644
index 00000000000..33543d0b4e7
--- /dev/null
+++ b/tests/wpt/web-platform-tests/resources/test/tests/functional/worker-dedicated-uncaught-allow.html
@@ -0,0 +1,48 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<meta name="variant" content="">
+<meta name="variant" content="?keep-promise">
+<title>Dedicated Worker Tests - Allowed Uncaught Exception</title>
+<script src="../../variants.js"></script>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<h1>Dedicated Web Worker Tests - Allowed Uncaught Exception</h1>
+<p>Demonstrates running <tt>testharness</tt> based tests inside a dedicated web worker.
+<p>The test harness is expected to pass despite an uncaught exception in a worker because that worker is configured to allow uncaught exceptions.</p>
+<div id="log"></div>
+
+<script>
+test(function(t) {
+        assert_true("Worker" in self, "Browser should support Workers");
+    },
+    "Browser supports Workers");
+
+fetch_tests_from_worker(new Worker("worker-uncaught-allow.js"));
+</script>
+<script type="text/json" id="expected">
+{
+  "summarized_status": {
+    "status_string": "OK",
+    "message": null
+  },
+  "summarized_tests": [
+    {
+      "status_string": "PASS",
+      "name": "Browser supports Workers",
+      "properties": {},
+      "message": null
+    },
+    {
+      "status_string": "PASS",
+      "name": "onerror event is triggered",
+      "properties": {},
+      "message": null
+    }
+  ],
+  "type": "complete"
+}
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/resources/test/tests/functional/worker-uncaught-allow.js b/tests/wpt/web-platform-tests/resources/test/tests/functional/worker-uncaught-allow.js
new file mode 100644
index 00000000000..957131a890e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/resources/test/tests/functional/worker-uncaught-allow.js
@@ -0,0 +1,17 @@
+importScripts("/resources/testharness.js");
+
+setup({allow_uncaught_exception:true});
+
+async_test(function(t) {
+  onerror = function() {
+    // Further delay the test's completion to ensure that the worker's
+    // `onerror` handler does not influence results in the parent context.
+    setTimeout(function() {
+      t.done();
+    }, 0);
+  };
+
+  setTimeout(function() {
+    throw new Error("This error is expected.");
+  }, 0);
+}, 'onerror event is triggered');
diff --git a/tests/wpt/web-platform-tests/resources/testdriver-actions.js b/tests/wpt/web-platform-tests/resources/testdriver-actions.js
index 82cac85347b..46c68858e45 100644
--- a/tests/wpt/web-platform-tests/resources/testdriver-actions.js
+++ b/tests/wpt/web-platform-tests/resources/testdriver-actions.js
@@ -22,14 +22,6 @@
   }
 
   Actions.prototype = {
-    ButtonType: {
-      LEFT: 0,
-      MIDDLE: 1,
-      RIGHT: 2,
-      BACK: 3,
-      FORWARD: 4,
-    },
-
     /**
      * Generate the action sequence suitable for passing to
      * test_driver.action_sequence
@@ -106,7 +98,7 @@
      * @returns {Actions}
      */
     addKeyboard: function(name, set=true) {
-      this.createSource("key", name);
+      this.createSource("key", name, true);
       if (set) {
         this.setKeyboard(name);
       }
@@ -133,7 +125,7 @@
      * @returns {Actions}
      */
     addPointer: function(name, pointerType="mouse", set=true) {
-      this.createSource("pointer", name, {pointerType: pointerType});
+      this.createSource("pointer", name, true, {pointerType: pointerType});
       if (set) {
         this.setPointer(name);
       }
@@ -233,9 +225,9 @@
      *                               pointer source
      * @returns {Actions}
      */
-    pointerDown: function(x, y, {origin="viewport", button=this.ButtonType.LEFT, sourceName=null}={}) {
+    pointerDown: function({button=0, sourceName=null}={}) {
       let source = this.getSource("pointer", sourceName);
-      source.pointerDown(this, button, x, y, origin);
+      source.pointerDown(this, button);
       return this;
     },
 
@@ -247,7 +239,7 @@
      *                               source
      * @returns {Actions}
      */
-    pointerUp: function({button=this.ButtonType.LEFT, sourceName=null}={}) {
+    pointerUp: function({button=0, sourceName=null}={}) {
       let source = this.getSource("pointer", sourceName);
       source.pointerUp(this, button);
       return this;
@@ -367,12 +359,12 @@
       return data;
     },
 
-    pointerDown: function(actions, button, x, y, origin) {
+    pointerDown: function(actions, button) {
       let tick = actions.tickIdx;
       if (this.actions.has(tick)) {
         tick = actions.addTick().tickIdx;
       }
-      this.actions.set(tick, {type: "pointerDown", button, x, y, origin});
+      this.actions.set(tick, {type: "pointerDown", button});
     },
 
     pointerUp: function(actions, button) {
diff --git a/tests/wpt/web-platform-tests/resources/testdriver.js b/tests/wpt/web-platform-tests/resources/testdriver.js
index 8ffd765072c..e0741e8d61d 100644
--- a/tests/wpt/web-platform-tests/resources/testdriver.js
+++ b/tests/wpt/web-platform-tests/resources/testdriver.js
@@ -192,7 +192,7 @@
          * @returns {Promise} fufiled after the actions are performed, or rejected in
          *                    the cases the WebDriver command errors
          */
-        action_sequence: function(actions) {
+        action_sequence(actions) {
             return window.test_driver_internal.action_sequence(actions);
         }
     };
@@ -233,7 +233,7 @@
         /**
          * Send a sequence of pointer actions
          *
-         * @returns {Promise} fulfilled after actions are sent, rejected if any actions
+         * @returns {Promise} fufilled after actions are sent, rejected if any actions
          *                    fail
          */
         action_sequence: function(actions) {
diff --git a/tests/wpt/web-platform-tests/resources/testharness.js b/tests/wpt/web-platform-tests/resources/testharness.js
index 18a6f70beab..2e14c30730d 100644
--- a/tests/wpt/web-platform-tests/resources/testharness.js
+++ b/tests/wpt/web-platform-tests/resources/testharness.js
@@ -1904,7 +1904,9 @@ policies and contribution forms [3].
      */
     function RemoteContext(remote, message_target, message_filter) {
         this.running = true;
+        this.started = false;
         this.tests = new Array();
+        this.early_exception = null;
 
         var this_obj = this;
         // If remote context is cross origin assigning to onerror is not
@@ -1943,6 +1945,21 @@ policies and contribution forms [3].
     }
 
     RemoteContext.prototype.remote_error = function(error) {
+        if (error.preventDefault) {
+            error.preventDefault();
+        }
+
+        // Defer interpretation of errors until the testing protocol has
+        // started and the remote test's `allow_uncaught_exception` property
+        // is available.
+        if (!this.started) {
+            this.early_exception = error;
+        } else if (!this.allow_uncaught_exception) {
+            this.report_uncaught(error);
+        }
+    };
+
+    RemoteContext.prototype.report_uncaught = function(error) {
         var message = error.message || String(error);
         var filename = (error.filename ? " " + error.filename: "");
         // FIXME: Display remote error states separately from main document
@@ -1950,9 +1967,14 @@ policies and contribution forms [3].
         tests.set_status(tests.status.ERROR,
                          "Error in remote" + filename + ": " + message,
                          error.stack);
+    };
 
-        if (error.preventDefault) {
-            error.preventDefault();
+    RemoteContext.prototype.start = function(data) {
+        this.started = true;
+        this.allow_uncaught_exception = data.properties.allow_uncaught_exception;
+
+        if (this.early_exception && !this.allow_uncaught_exception) {
+            this.report_uncaught(this.early_exception);
         }
     };
 
@@ -2002,6 +2024,7 @@ policies and contribution forms [3].
     };
 
     RemoteContext.prototype.message_handlers = {
+        start: RemoteContext.prototype.start,
         test_state: RemoteContext.prototype.test_state,
         result: RemoteContext.prototype.test_done,
         complete: RemoteContext.prototype.remote_done
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/clients-get.https.html b/tests/wpt/web-platform-tests/service-workers/service-worker/clients-get.https.html
index 68c6d7f7ac0..b0527403908 100644
--- a/tests/wpt/web-platform-tests/service-workers/service-worker/clients-get.https.html
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/clients-get.https.html
@@ -49,6 +49,162 @@ promise_test(function(t) {
         });
   }, 'Test Clients.get()');
 
+promise_test((t) => {
+  let frame = null;
+  const scope = 'resources/simple.html';
+  const outerSwContainer = navigator.serviceWorker;
+  let innerSwReg = null;
+  let innerSw = null;
+
+  return service_worker_unregister_and_register(
+    t, 'resources/clients-get-resultingClientId-worker.js', scope)
+    .then((registration) => {
+        innerSwReg = registration;
+        add_completion_callback(function() { registration.unregister(); });
+        return wait_for_state(t, registration.installing, 'activated');
+    })
+    .then(() => {
+        // load frame and get resulting client id
+      let channel = new MessageChannel();
+      innerSw = innerSwReg.active;
+
+      let p = new Promise(resolve => {
+        function getResultingClientId(e) {
+          if (e.data.msg == 'getResultingClientId') {
+            const { resultingClientId } = e.data;
+
+            channel.port1.removeEventListener('message', getResultingClientId);
+
+            resolve({ resultingClientId, port: channel.port1 });
+          }
+        }
+
+        channel.port1.onmessage = getResultingClientId;
+      });
+
+
+      return with_iframe(scope).then((iframe) => {
+        innerSw.postMessage(
+          { port: channel.port2, msg: 'getResultingClientId' },
+          [channel.port2],
+        );
+
+        frame = iframe;
+        frame.focus();
+        add_completion_callback(() => iframe.remove());
+
+        return p;
+      });
+    })
+    .then(({ resultingClientId, port }) => {
+      // query service worker for clients.get(resultingClientId)
+      let channel = new MessageChannel();
+
+      let p = new Promise(resolve => {
+        function getIsResultingClientUndefined(e) {
+          if (e.data.msg == 'getIsResultingClientUndefined') {
+            let { isResultingClientUndefined } = e.data;
+
+            port.removeEventListener('message', getIsResultingClientUndefined);
+
+            resolve(isResultingClientUndefined);
+          }
+        }
+
+        port.onmessage = getIsResultingClientUndefined;
+      });
+
+      innerSw.postMessage(
+        { port: channel.port2, msg: 'getIsResultingClientUndefined', resultingClientId },
+        [channel.port2],
+      );
+
+      return p;
+    })
+    .then((isResultingClientUndefined) => {
+      assert_false(isResultingClientUndefined, 'Clients.get(FetchEvent.resultingClientId) resolved with a Client');
+    });
+}, 'Test successful Clients.get(FetchEvent.resultingClientId)');
+
+promise_test((t) => {
+  const scope = 'resources/simple.html?fail';
+  const outerSwContainer = navigator.serviceWorker;
+  let innerSwReg = null;
+  let innerSw = null;
+
+  return service_worker_unregister_and_register(
+    t, 'resources/clients-get-resultingClientId-worker.js', scope)
+    .then((registration) => {
+        innerSwReg = registration;
+        add_completion_callback(function() { registration.unregister(); });
+        return wait_for_state(t, registration.installing, 'activated');
+    })
+    .then(() => {
+        // load frame, destroying it while loading, and get resulting client id
+        innerSw = innerSwReg.active;
+
+        let iframe = document.createElement('iframe');
+        iframe.className = 'test-iframe';
+        iframe.src = scope;
+
+        function destroyIframe(e) {
+          if (e.data.msg == 'destroyResultingClient') {
+            iframe.remove();
+            iframe = null;
+
+            innerSw.postMessage({ msg: 'resultingClientDestroyed' });
+          }
+        }
+
+        outerSwContainer.addEventListener('message', destroyIframe);
+
+        let p = new Promise(resolve => {
+          function resultingClientDestroyedAck(e) {
+            if (e.data.msg == 'resultingClientDestroyedAck') {
+              let { resultingDestroyedClientId } = e.data;
+
+              outerSwContainer.removeEventListener('message', resultingClientDestroyedAck);
+              resolve(resultingDestroyedClientId);
+            }
+          }
+
+          outerSwContainer.addEventListener('message', resultingClientDestroyedAck);
+        });
+
+        document.body.appendChild(iframe);
+
+        return p;
+    })
+    .then((resultingDestroyedClientId) => {
+        // query service worker for clients.get(resultingDestroyedClientId)
+        let channel = new MessageChannel();
+
+        let p = new Promise((resolve, reject) => {
+          function getIsResultingClientUndefined(e) {
+            if (e.data.msg == 'getIsResultingClientUndefined') {
+              let { isResultingClientUndefined } = e.data;
+
+              channel.port1.removeEventListener('message', getIsResultingClientUndefined);
+
+              resolve(isResultingClientUndefined);
+            }
+          }
+
+          channel.port1.onmessage = getIsResultingClientUndefined;
+        });
+
+        innerSw.postMessage(
+          { port: channel.port2, msg: 'getIsResultingClientUndefined', resultingClientId: resultingDestroyedClientId },
+          [channel.port2],
+        );
+
+        return p;
+    })
+    .then((isResultingClientUndefined) => {
+      assert_true(isResultingClientUndefined, 'Clients.get(FetchEvent.resultingClientId) resolved with `undefined`');
+    });
+}, 'Test unsuccessful Clients.get(FetchEvent.resultingClientId)');
+
 function wait_for_clientId() {
   return new Promise(function(resolve, reject) {
       function get_client_id(e) {
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/fetch-event.https.html b/tests/wpt/web-platform-tests/service-workers/service-worker/fetch-event.https.html
index 78e099b8b55..169a0b17d62 100644
--- a/tests/wpt/web-platform-tests/service-workers/service-worker/fetch-event.https.html
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/fetch-event.https.html
@@ -116,7 +116,6 @@ promise_test(t => {
         })
       .then(function(response) { return response.text(); })
       .then(function(response_text) {
-          var new_client_id = response_text.substr(17);
           assert_equals(
             response_text.substr(0, 15),
             'Client ID Found',
@@ -124,6 +123,28 @@ promise_test(t => {
         });
   }, 'Service Worker responds to fetch event with an existing client id');
 
+promise_test(t => {
+    const page_url = 'resources/simple.html?resultingClientId';
+    const expected_found = 'Resulting Client ID Found';
+    const expected_not_found = 'Resulting Client ID Not Found';
+    return with_iframe(page_url)
+      .then(function(frame) {
+          t.add_cleanup(() => { frame.remove(); });
+          assert_equals(
+            frame.contentDocument.body.textContent.substr(0, expected_found.length),
+            expected_found,
+            'Service Worker should respond with an existing resulting client id for non-subresource requests');
+          return frame.contentWindow.fetch('resources/other.html?resultingClientId');
+        })
+      .then(function(response) { return response.text(); })
+      .then(function(response_text) {
+          assert_equals(
+            response_text.substr(0),
+            expected_not_found,
+            'Service Worker should respond with an empty resulting client id for subresource requests');
+        });
+  }, 'Service Worker responds to fetch event with the correct resulting client id');
+
 promise_test(t => {
     const page_url = 'resources/simple.html?ignore';
     return with_iframe(page_url)
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/import-module-scripts.https.html b/tests/wpt/web-platform-tests/service-workers/service-worker/import-module-scripts.https.html
index e82911a1bd0..7bca8de64f5 100644
--- a/tests/wpt/web-platform-tests/service-workers/service-worker/import-module-scripts.https.html
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/import-module-scripts.https.html
@@ -13,6 +13,7 @@ function import_test(testCase) {
       navigator.serviceWorker.onmessage = resolve;
     });
     await service_worker_unregister(t, testCase.scriptURL);
+    t.add_cleanup(() => service_worker_unregister(t, testCase.scriptURL));
     const registration = await navigator.serviceWorker.register(
       testCase.scriptURL,
       { scope: testCase.scriptURL, type: 'module' });
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/resources/clients-get-resultingClientId-worker.js b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/clients-get-resultingClientId-worker.js
new file mode 100644
index 00000000000..153a8e3f5b9
--- /dev/null
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/clients-get-resultingClientId-worker.js
@@ -0,0 +1,64 @@
+let savedPort = null;
+let savedResultingClientId = null;
+
+async function destroyResultingClient(e) {
+  const outer = await self.clients.matchAll({ type: 'window', includeUncontrolled: true })
+    .then((clientList) => {
+    for (let c of clientList) {
+      if (c.url.endsWith('clients-get.https.html')) {
+        c.focus();
+        return c;
+      }
+    }
+  });
+
+  const p = new Promise(resolve => {
+    function resultingClientDestroyed(evt) {
+      if (evt.data.msg == 'resultingClientDestroyed') {
+        self.removeEventListener('message', resultingClientDestroyed);
+        resolve(outer);
+      }
+    }
+
+    self.addEventListener('message', resultingClientDestroyed);
+  });
+
+  outer.postMessage({ msg: 'destroyResultingClient' });
+
+  return await p;
+}
+
+self.addEventListener('fetch', async (e) => {
+  let { resultingClientId } = e;
+  savedResultingClientId = resultingClientId;
+
+  if (e.request.url.endsWith('simple.html?fail')) {
+    e.waitUntil(new Promise(async (resolve) => {
+        let outer = await destroyResultingClient(e);
+
+        outer.postMessage({ msg: 'resultingClientDestroyedAck',
+                            resultingDestroyedClientId: savedResultingClientId });
+        resolve();
+    }));
+  } else {
+    e.respondWith(fetch(e.request));
+  }
+});
+
+self.addEventListener('message', (e) => {
+  let { msg, port, resultingClientId } = e.data;
+  savedPort = savedPort || port;
+
+  if (msg == 'getIsResultingClientUndefined') {
+    self.clients.get(resultingClientId).then((client) => {
+      let isUndefined = typeof client == 'undefined';
+      savedPort.postMessage({ msg: 'getIsResultingClientUndefined',
+        isResultingClientUndefined: isUndefined });
+    });
+  }
+
+  if (msg == 'getResultingClientId') {
+    savedPort.postMessage({ msg: 'getResultingClientId',
+      resultingClientId: savedResultingClientId });
+  }
+});
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/resources/fetch-event-test-worker.js b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/fetch-event-test-worker.js
index d503a6609d6..0a52a8201ea 100644
--- a/tests/wpt/web-platform-tests/service-workers/service-worker/resources/fetch-event-test-worker.js
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/fetch-event-test-worker.js
@@ -37,6 +37,16 @@ function handleClientId(event) {
   event.respondWith(new Response(body));
 }
 
+function handleResultingClientId(event) {
+  var body;
+  if (event.resultingClientId !== "") {
+    body = 'Resulting Client ID Found: ' + event.resultingClientId;
+  } else {
+    body = 'Resulting Client ID Not Found';
+  }
+  event.respondWith(new Response(body));
+}
+
 function handleNullBody(event) {
   event.respondWith(new Response());
 }
@@ -155,6 +165,7 @@ self.addEventListener('fetch', function(event) {
       { pattern: '?referrerPolicy', fn: handleReferrerPolicy },
       { pattern: '?referrer', fn: handleReferrer },
       { pattern: '?clientId', fn: handleClientId },
+      { pattern: '?resultingClientId', fn: handleResultingClientId },
       { pattern: '?ignore', fn: function() {} },
       { pattern: '?null', fn: handleNullBody },
       { pattern: '?fetch', fn: handleFetch },
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/resources/registration-tests-scope.js b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/registration-tests-scope.js
index 51b0ab4ad51..6c097ad8d1f 100644
--- a/tests/wpt/web-platform-tests/service-workers/service-worker/resources/registration-tests-scope.js
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/registration-tests-scope.js
@@ -94,9 +94,9 @@ function registration_tests_scope(register_method, check_error_types) {
       var script = 'resources/empty-worker.js';
       var scope = 'filesystem:' + normalizeURL('resources/scope/filesystem-scope-url');
       return promise_rejects(t,
-          check_error_types ? 'SecurityError' : null,
+          check_error_types ? new TypeError : null,
           register_method(script, {scope: scope}),
           'Registering with the scope that has same-origin filesystem: URL ' +
-              'should fail with SecurityError.');
+              'should fail with TypeError.');
     }, 'Scope URL is same-origin filesystem: URL');
 }
diff --git a/tests/wpt/web-platform-tests/service-workers/service-worker/resources/registration-tests-security-error.js b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/registration-tests-security-error.js
index c84bb66e042..a72d3bac291 100644
--- a/tests/wpt/web-platform-tests/service-workers/service-worker/resources/registration-tests-security-error.js
+++ b/tests/wpt/web-platform-tests/service-workers/service-worker/resources/registration-tests-security-error.js
@@ -70,9 +70,9 @@ function registration_tests_security_error(register_method, check_error_types) {
       var script = 'filesystem:' + normalizeURL('resources/empty-worker.js');
       var scope = 'resources/scope/filesystem-script-url';
       return promise_rejects(t,
-          check_error_types ? 'SecurityError' : null,
+          check_error_types ? new TypeError : null,
           register_method(script, {scope: scope}),
           'Registering a script which has same-origin filesystem: URL should ' +
-              'fail with SecurityError.');
+              'fail with TypeError.');
     }, 'Script URL is same-origin filesystem: URL');
 }
diff --git a/tests/wpt/web-platform-tests/svg/geometry/parsing/cx-computed.svg b/tests/wpt/web-platform-tests/svg/geometry/parsing/cx-computed.svg
new file mode 100644
index 00000000000..5a408ba4d28
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/geometry/parsing/cx-computed.svg
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     width="800px" height="8000px">
+  <title>SVG Geometry Properties: getComputedValue().cx</title>
+  <metadata>
+    <h:link rel="help" href="https://svgwg.org/svg2-draft/geometry.html#CX"/>
+  </metadata>
+  <g id="target"></g>
+  <style>
+    #target {
+      font-size: 40px;
+    }
+  </style>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+  <h:script src="/css/support/computed-testcommon.js"/>
+  <script><![CDATA[
+
+test_computed_value("cx", "-10px");
+test_computed_value("cx", "0.5em", "20px");
+test_computed_value("cx", "calc(10px + 0.5em)", "30px");
+test_computed_value("cx", "40%");
+test_computed_value("cx", "calc(50% + 60x)");
+
+  ]]></script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/svg/geometry/parsing/cy-computed.svg b/tests/wpt/web-platform-tests/svg/geometry/parsing/cy-computed.svg
new file mode 100644
index 00000000000..97a41aed9c1
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/geometry/parsing/cy-computed.svg
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     width="800px" height="8000px">
+  <title>SVG Geometry Properties: getComputedValue().cy</title>
+  <metadata>
+    <h:link rel="help" href="https://svgwg.org/svg2-draft/geometry.html#CY"/>
+  </metadata>
+  <g id="target"></g>
+  <style>
+    #target {
+      font-size: 40px;
+    }
+  </style>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+  <h:script src="/css/support/computed-testcommon.js"/>
+  <script><![CDATA[
+
+test_computed_value("cy", "-10px");
+test_computed_value("cy", "0.5em", "20px");
+test_computed_value("cy", "calc(10px + 0.5em)", "30px");
+test_computed_value("cy", "40%");
+test_computed_value("cy", "calc(50% + 60x)");
+
+  ]]></script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/svg/geometry/parsing/r-computed.svg b/tests/wpt/web-platform-tests/svg/geometry/parsing/r-computed.svg
new file mode 100644
index 00000000000..fc8ea983ff0
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/geometry/parsing/r-computed.svg
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     width="800px" height="8000px">
+  <title>SVG Geometry Properties: getComputedValue().r</title>
+  <metadata>
+    <h:link rel="help" href="https://svgwg.org/svg2-draft/geometry.html#R"/>
+  </metadata>
+  <g id="target"></g>
+  <style>
+    #target {
+      font-size: 40px;
+    }
+  </style>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+  <h:script src="/css/support/computed-testcommon.js"/>
+  <script><![CDATA[
+
+test_computed_value("r", "10px");
+test_computed_value("r", "0.5em", "20px");
+test_computed_value("r", "calc(10px + 0.5em)", "30px");
+test_computed_value("r", "40%");
+test_computed_value("r", "calc(50% + 60x)");
+
+  ]]></script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/svg/geometry/parsing/rx-computed.svg b/tests/wpt/web-platform-tests/svg/geometry/parsing/rx-computed.svg
new file mode 100644
index 00000000000..7e4c42d2930
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/geometry/parsing/rx-computed.svg
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     width="800px" height="8000px">
+  <title>SVG Geometry Properties: getComputedValue().rx</title>
+  <metadata>
+    <h:link rel="help" href="https://svgwg.org/svg2-draft/geometry.html#RX"/>
+  </metadata>
+  <g id="target"></g>
+  <style>
+    #target {
+      font-size: 40px;
+    }
+  </style>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+  <h:script src="/css/support/computed-testcommon.js"/>
+  <script><![CDATA[
+
+test_computed_value("rx", "auto");
+
+test_computed_value("rx", "10px");
+test_computed_value("rx", "0.5em", "20px");
+test_computed_value("rx", "calc(10px + 0.5em)", "30px");
+test_computed_value("rx", "40%");
+test_computed_value("rx", "calc(50% + 60x)");
+
+  ]]></script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/svg/geometry/parsing/ry-computed.svg b/tests/wpt/web-platform-tests/svg/geometry/parsing/ry-computed.svg
new file mode 100644
index 00000000000..390d63dc7e5
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/geometry/parsing/ry-computed.svg
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     width="800px" height="8000px">
+  <title>SVG Geometry Properties: getComputedValue().ry</title>
+  <metadata>
+    <h:link rel="help" href="https://svgwg.org/svg2-draft/geometry.html#RY"/>
+  </metadata>
+  <g id="target"></g>
+  <style>
+    #target {
+      font-size: 40px;
+    }
+  </style>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+  <h:script src="/css/support/computed-testcommon.js"/>
+  <script><![CDATA[
+
+test_computed_value("ry", "auto");
+
+test_computed_value("ry", "10px");
+test_computed_value("ry", "0.5em", "20px");
+test_computed_value("ry", "calc(10px + 0.5em)", "30px");
+test_computed_value("ry", "40%");
+test_computed_value("ry", "calc(50% + 60x)");
+
+  ]]></script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/svg/geometry/parsing/x-computed.svg b/tests/wpt/web-platform-tests/svg/geometry/parsing/x-computed.svg
new file mode 100644
index 00000000000..f7da0ed9564
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/geometry/parsing/x-computed.svg
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     width="800px" height="8000px">
+  <title>SVG Geometry Properties: getComputedValue().x</title>
+  <metadata>
+    <h:link rel="help" href="https://svgwg.org/svg2-draft/geometry.html#X"/>
+  </metadata>
+  <g id="target"></g>
+  <style>
+    #target {
+      font-size: 40px;
+    }
+  </style>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+  <h:script src="/css/support/computed-testcommon.js"/>
+  <script><![CDATA[
+
+test_computed_value("x", "-10px");
+test_computed_value("x", "0.5em", "20px");
+test_computed_value("x", "calc(10px + 0.5em)", "30px");
+test_computed_value("x", "40%");
+test_computed_value("x", "calc(50% + 60x)");
+
+  ]]></script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/svg/geometry/parsing/y-computed.svg b/tests/wpt/web-platform-tests/svg/geometry/parsing/y-computed.svg
new file mode 100644
index 00000000000..83ef887da67
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/geometry/parsing/y-computed.svg
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml"
+     width="800px" height="8000px">
+  <title>SVG Geometry Properties: getComputedValue().y</title>
+  <metadata>
+    <h:link rel="help" href="https://svgwg.org/svg2-draft/geometry.html#Y"/>
+  </metadata>
+  <g id="target"></g>
+  <style>
+    #target {
+      font-size: 40px;
+    }
+  </style>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+  <h:script src="/css/support/computed-testcommon.js"/>
+  <script><![CDATA[
+
+test_computed_value("y", "-10px");
+test_computed_value("y", "0.5em", "20px");
+test_computed_value("y", "calc(10px + 0.5em)", "30px");
+test_computed_value("y", "40%");
+test_computed_value("y", "calc(50% + 60x)");
+
+  ]]></script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/svg/interact/script-common.html b/tests/wpt/web-platform-tests/svg/interact/script-common.html
new file mode 100644
index 00000000000..fc2ae3ba01a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/interact/script-common.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Test: </title>
+<link rel="help" href="https://svgwg.org/svg2-draft/interact.html#ScriptElement">
+<meta name="assert" content="The same scripts can work on both HTML and SVG elements.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<script>var total = 0;</script>
+<script>function s0() { total += 100; return s1(); }</script>
+<svg>
+  <script>function s1() { total += 20; return s2(); }</script>
+  <g>
+    <script>function s2() { return s3(); }</script>
+    <circle id="spot"><clipPath id="spot-first-child"/>
+      <script>function s3() { return s4(); }</script>
+    </circle>
+  </g>
+  <desc>
+    <script>function s4() { return s5(); }</script>
+  </desc>
+  <filter>
+    <script>function s5() { return s6(); }</script>
+    <feFlood>
+      <script>function s6() { return s7(); }</script>
+    </feFlood>
+  </filter>
+  <text>
+    <script>function s7() { return s8(); }</script>
+    <tspan>
+      <script>function s8() { return s9(); }</script>
+    </tspan>
+  </text>
+  <use href="spot">
+    <script>function s9() { return s10(); }</script>
+  </use>
+</svg>
+<div id="box"><script id="box-first-child">function s10() { total += 3; return s11(); }</script>
+  <span>
+    <script>function s11() { return 'same'; }</script>
+  </span>
+</div>
+
+<script>
+test(function(){
+  assert_equals(s0(), 'same');
+  assert_equals(total, 123);
+
+  for (let elementName of ['spot', 'box']) {
+    let element = document.getElementById(elementName);
+    let firstChild = element.firstChild;
+    assert_equals(firstChild.id, elementName + '-first-child');
+  }
+}, 'The same scripts work on both HTML and SVG elements');
+</script>
diff --git a/tests/wpt/web-platform-tests/svg/interact/script-content.svg b/tests/wpt/web-platform-tests/svg/interact/script-content.svg
new file mode 100644
index 00000000000..94836f7c033
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/interact/script-content.svg
@@ -0,0 +1,239 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg"
+     xmlns:h="http://www.w3.org/1999/xhtml">
+  <h:link rel="help" href="https://svgwg.org/svg2-draft/interact.html#ScriptElement"/>
+  <h:meta name="assert" content="The script element is in the content model of all elements."/>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+
+<script>function s0() { return s1(); }</script>
+
+<a>
+  <script>function s1() { return s2(); }</script>
+</a>
+
+<g>
+  <script>function s2() { return s3(); }</script>
+</g>
+
+<animate>
+  <script>function s3() { return s4(); }</script>
+</animate>
+
+<animateMotion>
+  <script>function s4() { return s5(); }</script>
+  <mPath>
+    <script>function s5() { return s6(); }</script>
+  </mPath>
+</animateMotion>
+
+<animateTransform>
+  <script>function s6() { return s7(); }</script>
+</animateTransform>
+
+<circle>
+  <script>function s7() { return s8(); }</script>
+  <clipPath>
+    <script>function s8() { return s9(); }</script>
+  </clipPath>
+</circle>
+
+<defs>
+  <script>function s9() { return s10(); }</script>
+</defs>
+
+<desc>
+  <script>function s10() { return s11(); }</script>
+</desc>
+
+<!-- Becomes https://svgwg.org/svg2-draft/struct.html#UnknownElement
+     if the implementation does not support <discard> -->
+<discard>
+  <script>function s11() { return s12(); }</script>
+</discard>
+
+<ellipse>
+  <script>function s12() { return s13(); }</script>
+</ellipse>
+
+<filter>
+  <script>function s13() { return s14(); }</script>
+  <feBlend>
+    <script>function s14() { return s15(); }</script>
+  </feBlend>
+  <feColorMatrix>
+    <script>function s15() { return s16(); }</script>
+  </feColorMatrix>
+  <feComponentTransfer>
+    <script>function s16() { return s17(); }</script>
+  </feComponentTransfer>
+  <feComposite>
+    <script>function s17() { return s18(); }</script>
+  </feComposite>
+  <feConvolveMatrix>
+    <script>function s18() { return s19(); }</script>
+  </feConvolveMatrix>
+  <feDiffuseLighting>
+    <script>function s19() { return s20(); }</script>
+  </feDiffuseLighting>
+  <feDisplacementMap>
+    <script>function s20() { return s21(); }</script>
+  </feDisplacementMap>
+  <feDistantLight>
+    <script>function s21() { return s22(); }</script>
+  </feDistantLight>
+  <feDropShadow>
+    <script>function s22() { return s23(); }</script>
+  </feDropShadow>
+  <feFlood>
+    <script>function s23() { return s24(); }</script>
+  </feFlood>
+  <feFuncA>
+    <script>function s24() { return s25(); }</script>
+  </feFuncA>
+  <feFuncB>
+    <script>function s25() { return s26(); }</script>
+  </feFuncB>
+  <feFuncG>
+    <script>function s26() { return s27(); }</script>
+  </feFuncG>
+  <feFuncR>
+    <script>function s27() { return s28(); }</script>
+  </feFuncR>
+  <feGaussianBlur>
+    <script>function s28() { return s29(); }</script>
+  </feGaussianBlur>
+  <feImage>
+    <script>function s29() { return s30(); }</script>
+  </feImage>
+  <feMerge>
+    <script>function s30() { return s31(); }</script>
+  </feMerge>
+  <feMergeNode>
+    <script>function s31() { return s32(); }</script>
+  </feMergeNode>
+  <feMorphology>
+    <script>function s32() { return s33(); }</script>
+  </feMorphology>
+  <feOffset>
+    <script>function s33() { return s34(); }</script>
+  </feOffset>
+  <fePointLight>
+    <script>function s34() { return s35(); }</script>
+  </fePointLight>
+  <feSpecularLighting>
+    <script>function s35() { return s36(); }</script>
+  </feSpecularLighting>
+  <feSpotLight>
+    <script>function s36() { return s37(); }</script>
+  </feSpotLight>
+  <feTile>
+    <script>function s37() { return s38(); }</script>
+  </feTile>
+  <feTurbulence>
+    <script>function s38() { return s39(); }</script>
+  </feTurbulence>
+</filter>
+
+<foreignObject>
+  <script>function s39() { return s40(); }</script>
+</foreignObject>
+
+<g>
+  <script>function s40() { return s41(); }</script>
+</g>
+
+<image>
+  <script>function s41() { return s42(); }</script>
+</image>
+
+<line>
+  <script>function s42() { return s43(); }</script>
+</line>
+
+<linearGradient>
+  <script>function s43() { return s44(); }</script>
+</linearGradient>
+
+<marker>
+  <script>function s44() { return s45(); }</script>
+</marker>
+
+<mask>
+  <script>function s45() { return s46(); }</script>
+</mask>
+
+<path>
+  <script>function s46() { return s47(); }</script>
+</path>
+
+<pattern>
+  <script>function s47() { return s48(); }</script>
+</pattern>
+
+<polygon>
+  <script>function s48() { return s49(); }</script>
+</polygon>
+
+<polyline>
+  <script>function s49() { return s50(); }</script>
+</polyline>
+
+<radialGradient>
+  <script>function s50() { return s51(); }</script>
+</radialGradient>
+
+<rect>
+  <script>function s51() { return s52(); }</script>
+</rect>
+
+<set>
+  <script>function s52() { return s53(); }</script>
+</set>
+
+<stop>
+  <script>function s53() { return s54(); }</script>
+</stop>
+
+<svg>
+  <script>function s54() { return s55(); }</script>
+</svg>
+
+<symbol>
+  <script>function s55() { return s56(); }</script>
+</symbol>
+
+<text>
+  <script>function s56() { return s57(); }</script>
+</text>
+
+<textPath>
+  <script>function s57() { return s58(); }</script>
+</textPath>
+
+<title>
+  <script>function s58() { return s59(); }</script>
+</title>
+
+<tspan>
+  <script>function s59() { return s60(); }</script>
+</tspan>
+
+<use>
+  <script>function s60() { return s61(); }</script>
+</use>
+
+<view>
+  <script>function s61() { return s62(); }</script>
+</view>
+
+<script>
+function s62() {
+  return 'success';
+}
+
+test(function(){
+  assert_equals(s0(), 'success');
+}, "script element is in elements' content model");
+</script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/svg/painting/scripted/paint-order-computed-value-01.svg b/tests/wpt/web-platform-tests/svg/painting/scripted/paint-order-computed-value-01.svg
new file mode 100644
index 00000000000..7ea669f1508
--- /dev/null
+++ b/tests/wpt/web-platform-tests/svg/painting/scripted/paint-order-computed-value-01.svg
@@ -0,0 +1,62 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:h="http://www.w3.org/1999/xhtml">
+  <title>'paint-order' computed style serialization</title>
+  <h:script src="/resources/testharness.js"/>
+  <h:script src="/resources/testharnessreport.js"/>
+  <text id="text" x="100" y="100"/>
+  <script><![CDATA[
+    'use strict';
+
+    function make_tests(check, type) {
+      let tests = [
+        // Single keyword
+        ["normal", "normal"],
+        ["fill", "fill"],
+        ["stroke", "stroke"],
+        ["markers", "markers"],
+        // Two keywords
+        ["fill stroke", "fill"],
+        ["fill markers", "fill markers"],
+        ["stroke fill", "stroke"],
+        ["stroke markers", "stroke markers"],
+        ["markers fill", "markers"],
+        ["markers stroke", "markers stroke"],
+        // Three keywords
+        ["fill stroke markers", "fill"],
+        ["fill markers stroke", "fill markers"],
+        ["stroke fill markers", "stroke"],
+        ["stroke markers fill", "stroke markers"],
+        ["markers fill stroke", "markers"],
+        ["markers stroke fill", "markers stroke"],
+        // Invalid
+        ["foo", "normal"],
+        ["fill foo", "normal"],
+        ["stroke foo", "normal"],
+        ["markers foo", "normal"],
+        ["normal foo", "normal"],
+        ["fill markers stroke foo", "normal"],
+      ];
+      for (let [value, expected] of tests) {
+        test(() => {
+          check(value, expected);
+        }, `${document.title}, "${value}" => "${expected}" (${type})`);
+      }
+    }
+
+    const text = document.getElementById("text");
+
+    make_tests((value, expected) => {
+      text.setAttribute("style", "paint-order: " + value);
+      let actual = getComputedStyle(text).paintOrder;
+      text.removeAttribute("style");
+      assert_equals(actual, expected, value);
+    }, "property");
+
+    make_tests((value, expected) => {
+      text.setAttribute("paint-order", value);
+      let actual = getComputedStyle(text).paintOrder;
+      text.removeAttribute("paint-order");
+      assert_equals(actual, expected, value);
+    }, "presentation attribute");
+  ]]>
+  </script>
+</svg>
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/fennec.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/fennec.py
index 15396fba22c..01fed66d0e9 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/fennec.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/fennec.py
@@ -36,8 +36,9 @@ class FennecProfile(FirefoxProfile):
         "app.normandy.api_url": "",
         # Increase the APZ content response timeout in tests to 1 minute.
         "apz.content_response_timeout": 60000,
-        # Enable output of dump()
+        # Enable output for dump() and chrome console API
         "browser.dom.window.dump.enabled": True,
+        "devtools.console.stdout.chrome": True,
         # Disable safebrowsing components
         "browser.safebrowsing.blockedURIs.enabled": False,
         "browser.safebrowsing.downloads.enabled": False,
diff --git a/tests/wpt/web-platform-tests/tools/wptserve/wptserve/server.py b/tests/wpt/web-platform-tests/tools/wptserve/wptserve/server.py
index 848fbb74c7b..d57a36b1338 100644
--- a/tests/wpt/web-platform-tests/tools/wptserve/wptserve/server.py
+++ b/tests/wpt/web-platform-tests/tools/wptserve/wptserve/server.py
@@ -621,7 +621,7 @@ class WebTestHttpd(object):
 
     .. attribute:: started
 
-      Boolean indictating whether the server is running
+      Boolean indicating whether the server is running
 
     """
     def __init__(self, host="127.0.0.1", port=8000,
diff --git a/tests/wpt/web-platform-tests/user-timing/mark-measure-return-null.html b/tests/wpt/web-platform-tests/user-timing/mark-measure-return-null.html
new file mode 100644
index 00000000000..5afd9633f24
--- /dev/null
+++ b/tests/wpt/web-platform-tests/user-timing/mark-measure-return-null.html
@@ -0,0 +1,46 @@
+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>User Timing: L2 APIs return null</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<p>User Timing: L2 APIs return null</p>
+<div id="log"></div>
+<script>
+  async_test(function (t) {
+    self.performance.clearMeasures();
+    const measure = self.performance.measure("measure1");
+    assert_equals(measure, null);
+    t.done();
+  }, "L2: performance.measure(name) should return null.");
+
+  async_test(function (t) {
+    self.performance.clearMeasures();
+    self.performance.mark("1");
+    const measure = self.performance.measure("measure2", 1);
+    assert_equals(measure, null);
+    t.done();
+  }, "L2: performance.measure(name, param1) should return null.");
+
+  async_test(function (t) {
+    self.performance.clearMeasures();
+    self.performance.mark("1");
+    self.performance.mark("2");
+    const measure = self.performance.measure("measure3", 1, 2);
+    assert_equals(measure, null);
+    t.done();
+  }, "L2: performance.measure(name, param1, param2) should return null.");
+
+  async_test(function (t) {
+    self.performance.clearMarks();
+    const mark = self.performance.mark("mark1");
+    assert_equals(mark, null);
+    t.done();
+  }, "L2: performance.mark(name) should return null.");
+
+  async_test(function (t) {
+    self.performance.clearMarks();
+    const mark = self.performance.mark("mark2", { startTime: 34 });
+    assert_equals(mark, null);
+    t.done();
+  }, "L2: performance.mark(name, param) should return null.");
+</script>
diff --git a/tests/wpt/web-platform-tests/wasm/webapi/abort.any.js b/tests/wpt/web-platform-tests/wasm/webapi/abort.any.js
index cc0f5d9f34f..839de16108e 100644
--- a/tests/wpt/web-platform-tests/wasm/webapi/abort.any.js
+++ b/tests/wpt/web-platform-tests/wasm/webapi/abort.any.js
@@ -21,4 +21,17 @@ for (const method of methods) {
     controller.abort();
     return promise_rejects(t, 'AbortError', promise, `${method} should reject`);
   }, `${method}() synchronously followed by abort should reject with AbortError`);
+
+  promise_test(async t => {
+    const controller = new AbortController();
+    const signal = controller.signal;
+    return fetch('../incrementer.wasm', { signal })
+    .then(response => {
+      Promise.resolve().then(() => controller.abort());
+      return WebAssembly[method](response);
+    })
+    .catch(err => {
+      assert_true(err.name === "AbortError");
+    });
+  }, `${method}() asynchronously racing with abort should succeed or reject with AbortError`);
 }
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/maximize_window/stress.py b/tests/wpt/web-platform-tests/webdriver/tests/maximize_window/stress.py
index daa8a911928..4527c64a288 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/maximize_window/stress.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/maximize_window/stress.py
@@ -40,3 +40,4 @@ def test_stress(session, i):
     t_end = time.time() + 3
     while time.time() < t_end:
         assert session.window.size == size_after_maximize
+        time.sleep(.1)
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCConfiguration-rtcpMuxPolicy.html b/tests/wpt/web-platform-tests/webrtc/RTCConfiguration-rtcpMuxPolicy.html
index 1d99aa29d85..7d0c81f5eab 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCConfiguration-rtcpMuxPolicy.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCConfiguration-rtcpMuxPolicy.html
@@ -3,6 +3,7 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="RTCConfiguration-helper.js"></script>
+<script src="RTCPeerConnection-helper.js"></script>
 <script>
   'use strict';
 
@@ -188,8 +189,8 @@
     const pc = new RTCPeerConnection({rtcpMuxPolicy: 'require'});
     t.add_cleanup(() => pc.close());
 
-    await pc.createOffer({offerToReceiveAudio: true})
-      .then(offer => pc.setLocalDescription(offer));
+    const offer = await generateAudioReceiveOnlyOffer(pc);
+    await pc.setLocalDescription(offer);
     return promise_rejects(t, 'InvalidAccessError', pc.setRemoteDescription({type: 'answer', sdp}));
   }, 'setRemoteDescription throws InvalidAccessError when called with an answer without rtcp-mux and rtcpMuxPolicy is set to require');
 </script>
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-addIceCandidate.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-addIceCandidate.html
index 1dd1350acd2..2283c6835e1 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-addIceCandidate.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-addIceCandidate.html
@@ -61,9 +61,9 @@ a=rtcp-rsize
   const sessionDesc = { type: 'offer', sdp };
 
   // valid candidate attributes
-  const sdpMid = 'a1';
-  const sdpMLineIndex = 0;
-  const usernameFragment = 'ETEn';
+  const sdpMid1 = 'a1';
+  const sdpMLineIndex1 = 0;
+  const usernameFragment1 = 'ETEn';
 
   const sdpMid2 = 'v1';
   const sdpMLineIndex2 = 1;
@@ -138,7 +138,9 @@ a=rtcp-rsize
     return promise_rejects(t, 'InvalidStateError',
       pc.addIceCandidate({
         candidate: candidateStr1,
-        sdpMid, sdpMLineIndex, usernameFragment
+        sdpMid: sdpMid1,
+        sdpMLineIndex: sdpMLineIndex1,
+        usernameFragment: usernameFragment1
       }));
   }, 'Add ICE candidate before setting remote description should reject with InvalidStateError');
 
@@ -153,7 +155,9 @@ a=rtcp-rsize
     return pc.setRemoteDescription(sessionDesc)
     .then(() => pc.addIceCandidate({
       candidate: candidateStr1,
-      sdpMid, sdpMLineIndex, usernameFragment
+      sdpMid: sdpMid1,
+      sdpMLineIndex: sdpMLineIndex1,
+      usernameFragement: usernameFragment1
     }));
   }, 'Add ICE candidate after setting remote description should succeed');
 
@@ -165,7 +169,9 @@ a=rtcp-rsize
     return pc.setRemoteDescription(sessionDesc)
     .then(() => pc.addIceCandidate(new RTCIceCandidate({
       candidate: candidateStr1,
-      sdpMid, sdpMLineIndex, usernameFragment
+      sdpMid: sdpMid1,
+      sdpMLineIndex: sdpMLineIndex1,
+      usernameFragement: usernameFragment1
     })));
   }, 'Add ICE candidate with RTCIceCandidate should succeed');
 
@@ -175,7 +181,9 @@ a=rtcp-rsize
     t.add_cleanup(() => pc.close());
 
     return pc.setRemoteDescription(sessionDesc)
-      .then(() => pc.addIceCandidate({ sdpMid }));
+      .then(() => pc.addIceCandidate({
+        candidate: candidateStr1,
+        sdpMid: sdpMid1 }));
   }, 'Add candidate with only valid sdpMid should succeed');
 
   promise_test(t => {
@@ -184,7 +192,9 @@ a=rtcp-rsize
     t.add_cleanup(() => pc.close());
 
     return pc.setRemoteDescription(sessionDesc)
-      .then(() => pc.addIceCandidate({ sdpMLineIndex }));
+      .then(() => pc.addIceCandidate({
+        candidate: candidateStr1,
+        sdpMLineIndex: sdpMLineIndex1 }));
   }, 'Add candidate with only valid sdpMLineIndex should succeed');
 
   /*
@@ -206,7 +216,9 @@ a=rtcp-rsize
     return pc.setRemoteDescription(sessionDesc)
     .then(() => pc.addIceCandidate({
       candidate: candidateStr1,
-      sdpMid, sdpMLineIndex, usernameFragment
+      sdpMid: sdpMid1,
+      sdpMLineIndex: sdpMLineIndex1,
+      usernameFragement: usernameFragment1
     }))
     .then(() => {
       assert_candidate_line_between(pc.remoteDescription.sdp,
@@ -240,8 +252,9 @@ a=rtcp-rsize
     return pc.setRemoteDescription(sessionDesc)
     .then(() => pc.addIceCandidate({
       candidate: candidateStr1,
-      sdpMid, sdpMLineIndex,
-      usernameFragment: null
+      sdpMid: sdpMid1,
+      sdpMLineIndex: sdpMLineIndex1,
+      ufrag: null
     }))
     .then(() => {
       assert_candidate_line_between(pc.remoteDescription.sdp,
@@ -257,7 +270,9 @@ a=rtcp-rsize
     return pc.setRemoteDescription(sessionDesc)
     .then(() => pc.addIceCandidate({
       candidate: candidateStr1,
-      sdpMid, sdpMLineIndex, usernameFragment
+      sdpMid: sdpMid1,
+      sdpMLineIndex: sdpMLineIndex1,
+      usernameFragement: usernameFragment1
     }))
     .then(() => pc.addIceCandidate({
       candidate: candidateStr2,
@@ -296,12 +311,15 @@ a=rtcp-rsize
     return pc.setRemoteDescription(sessionDesc)
     .then(() => pc.addIceCandidate({
       candidate: candidateStr1,
-      sdpMid, sdpMLineIndex, usernameFragment
+      sdpMid: sdpMid1,
+      sdpMLineIndex: sdpMLineIndex1,
+      usernameFragement: usernameFragment1
     }))
     .then(() => pc.addIceCandidate({
       candidate: '',
-      sdpMid, sdpMLineIndex,
-      usernameFragment
+      sdpMid: sdpMid1,
+      sdpMLineIndex: sdpMLineIndex1,
+      usernameFragement: usernameFragment1
     }))
     .then(() => {
       assert_candidate_line_between(pc.remoteDescription.sdp,
@@ -404,7 +422,9 @@ a=rtcp-rsize
       promise_rejects(t, 'OperationError',
         pc.addIceCandidate({
           candidate: candidateStr1,
-          sdpMid: 'invalid', sdpMLineIndex, usernameFragment
+          sdpMid: 'invalid',
+          sdpMLineIndex: sdpMLineIndex1,
+          usernameFragement: usernameFragment1
         })));
   }, 'Add candidate with invalid sdpMid should reject with OperationError');
 
@@ -427,7 +447,7 @@ a=rtcp-rsize
         pc.addIceCandidate({
           candidate: candidateStr1,
           sdpMLineIndex: 2,
-          usernameFragment
+          usernameFragement: usernameFragment1
         })));
   }, 'Add candidate with invalid sdpMLineIndex should reject with OperationError');
 
@@ -441,9 +461,9 @@ a=rtcp-rsize
     return pc.setRemoteDescription(sessionDesc)
     .then(() => pc.addIceCandidate({
       candidate: candidateStr1,
-      sdpMid,
+      sdpMid: sdpMid1,
       sdpMLineIndex: 2,
-      usernameFragment
+      usernameFragement: usernameFragment1
     }));
   }, 'Invalid sdpMLineIndex should be ignored if valid sdpMid is provided');
 
@@ -482,8 +502,9 @@ a=rtcp-rsize
       promise_rejects(t, 'OperationError',
         pc.addIceCandidate({
           candidate: candidateStr1,
-          sdpMid, sdpMLineIndex,
-          usernameFragment: 'invalid'
+          sdpMid: sdpMid1,
+          sdpMLineIndex: sdpMLineIndex1,
+          ufrag: 'invalid'
         })));
   }, 'Add candidate with invalid usernameFragment should reject with OperationError');
 
@@ -504,7 +525,9 @@ a=rtcp-rsize
       promise_rejects(t, 'OperationError',
         pc.addIceCandidate({
           candidate: invalidCandidateStr,
-          sdpMid, sdpMLineIndex, usernameFragment
+          sdpMid: sdpMid1,
+          sdpMLineIndex: sdpMLineIndex1,
+          usernameFragement: usernameFragment1
         })));
   }, 'Add candidate with invalid candidate string should reject with OperationError');
 
@@ -520,7 +543,7 @@ a=rtcp-rsize
           candidate: candidateStr2,
           sdpMid: sdpMid2,
           sdpMLineIndex: sdpMLineIndex2,
-          usernameFragment
+          usernameFragement: usernameFragment1
         })));
   }, 'Add candidate with sdpMid belonging to different usernameFragment should reject with OperationError');
 
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceGatheringState.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceGatheringState.html
index fb9e514194b..e6d8d062701 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceGatheringState.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceGatheringState.html
@@ -11,8 +11,9 @@
   // https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html
 
   // The following helper functions are called from RTCPeerConnection-helper.js:
-  // exchangeIceCandidates
   // doSignalingHandshake
+  // exchangeIceCandidates
+  // generateAudioReceiveOnlyOffer
 
   /*
     4.3.2.  Interface Definition
@@ -72,7 +73,7 @@
 
     pc.addEventListener('icegatheringstatechange', onIceGatheringStateChange);
 
-    pc.createOffer({ offerToReceiveAudio: true })
+    generateAudioReceiveOnlyOffer(pc)
     .then(offer => pc.setLocalDescription(offer))
     .then(err => t.step_func(err =>
       assert_unreached(`Unhandled rejection ${err.name}: ${err.message}`)));
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-onnegotiationneeded.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-onnegotiationneeded.html
index 8f9ea2be780..7e55ac3fadd 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-onnegotiationneeded.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-onnegotiationneeded.html
@@ -12,6 +12,7 @@
 
   // The following helper functions are called from RTCPeerConnection-helper.js:
   //   generateAnswer
+  //   generateAudioReceiveOnlyOffer
   //   test_never_resolve
 
   // Listen to the negotiationneeded event on a peer connection
@@ -165,7 +166,7 @@
     const pc = new RTCPeerConnection();
     const negotiated = awaitNegotiation(pc);
 
-    return pc.createOffer({ offerToReceiveAudio: true })
+    return generateAudioReceiveOnlyOffer(pc)
     .then(offer => pc.setLocalDescription(offer))
     .then(() => negotiated)
     .then(({nextPromise}) => {
@@ -190,7 +191,7 @@
 
     return assert_first_promise_fulfill_after_second(
       awaitNegotiation(pc),
-      pc.createOffer({ offerToReceiveAudio: true })
+      generateAudioReceiveOnlyOffer(pc)
       .then(offer =>
         pc.setLocalDescription(offer)
         .then(() => {
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setLocalDescription-rollback.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setLocalDescription-rollback.html
index 0147b3185cc..630f84faa47 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setLocalDescription-rollback.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setLocalDescription-rollback.html
@@ -12,6 +12,7 @@
 
   // The following helper functions are called from RTCPeerConnection-helper.js:
   //   assert_session_desc_similar
+  //   generateAudioReceiveOnlyOffer
 
   /*
     4.3.2.  Interface Definition
@@ -105,7 +106,7 @@
   promise_test(t => {
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
-    return pc.createOffer({ offerToReceiveAudio: true })
+    return generateAudioReceiveOnlyOffer(pc)
     .then(offer =>
       pc.setRemoteDescription(offer)
       .then(() => pc.createAnswer()))
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-offer.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-offer.html
index 565fddc59be..cae62b24b6c 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-offer.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-offer.html
@@ -12,6 +12,7 @@
 
   // The following helper functions are called from RTCPeerConnection-helper.js:
   //   assert_session_desc_similar()
+  //   generateAudioReceiveOnlyOffer
 
   /*
     4.3.2.  Interface Definition
@@ -115,7 +116,7 @@
     .then(offer1 => {
       return pc1.setLocalDescription(offer1)
        .then(()=> {
-        return pc1.createOffer({ offerToReceiveAudio: true })
+        return generateAudioReceiveOnlyOffer(pc1)
         .then(offer2 => {
           assert_session_desc_not_similar(offer1, offer2);
 
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-rollback.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-rollback.html
index ec90e561cbc..c317f3e1ae6 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-rollback.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-rollback.html
@@ -11,8 +11,9 @@
   // https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html
 
   // The following helper functions are called from RTCPeerConnection-helper.js:
-  //   generateDataChannelOffer
   //   assert_session_desc_similar
+  //   generateAudioReceiveOnlyOffer
+  //   generateDataChannelOffer
 
   /*
     4.3.2.  Interface Definition
@@ -105,7 +106,7 @@
   promise_test(t => {
     const pc = new RTCPeerConnection();
     t.add_cleanup(() => pc.close());
-    return pc.createOffer({ offerToReceiveAudio: true })
+    return generateAudioReceiveOnlyOffer(pc)
     .then(offer => pc.setRemoteDescription(offer))
     .then(() => pc.setRemoteDescription({
       type: 'rollback',
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCQuicStream.https.html b/tests/wpt/web-platform-tests/webrtc/RTCQuicStream.https.html
index b147414794e..eed7cffc37f 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCQuicStream.https.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCQuicStream.https.html
@@ -55,10 +55,8 @@ promise_test(async t => {
 promise_test(async t => {
   const [ localQuicTransport, remoteQuicTransport ] =
       await makeTwoConnectedQuicTransports(t);
-  const firstLocalStream = localQuicTransport.createStream();
-  firstLocalStream.finish();
-  const secondLocalStream = localQuicTransport.createStream();
-  secondLocalStream.finish();
+  localQuicTransport.createStream().finish();
+  localQuicTransport.createStream().finish();
   const remoteWatcher =
       new EventWatcher(t, remoteQuicTransport, [ 'quicstream', 'statechange' ]);
   const { stream: firstRemoteStream } =
@@ -105,20 +103,6 @@ promise_test(async t => {
   assert_equals(localStream.state, 'closed');
 }, `reset() following finish() changes state to 'closed'.`);
 
-promise_test(async t => {
-  const [ localQuicTransport, remoteQuicTransport ] =
-      await makeTwoConnectedQuicTransports(t);
-  const localStream = localQuicTransport.createStream();
-  localStream.finish();
-  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
-  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
-  assert_equals(remoteStream.state, 'open');
-  const remoteStreamWatcher = new EventWatcher(t, remoteStream, 'statechange');
-  await remoteStreamWatcher.wait_for('statechange');
-  assert_equals(remoteStream.state, 'closing');
-}, 'createStream() followed by finish() fires a quicstream event followed by ' +
-    `a statechange event to 'closing' on the remote side.`);
-
 promise_test(async t => {
   const [ localQuicTransport, remoteQuicTransport ] =
       await makeTwoConnectedQuicTransports(t);
@@ -133,33 +117,6 @@ promise_test(async t => {
 }, 'createStream() followed by reset() fires a quicstream event followed ' +
     `by a statechange event to 'closed' on the remote side.`);
 
-promise_test(async t => {
-  const [ localQuicTransport, remoteQuicTransport ] =
-      await makeTwoConnectedQuicTransports(t);
-  remoteQuicTransport.onquicstream = ({ stream }) => stream.reset();
-  const localStream = localQuicTransport.createStream();
-  localStream.finish();
-  const localWatcher = new EventWatcher(t, localStream, 'statechange');
-  await localWatcher.wait_for('statechange');
-  assert_equals(localStream.state, 'closed');
-}, 'finish() on a remote stream that has already finished fires a ' +
-    `statechange event to 'closed' on the remote side.`);
-
-promise_test(async t => {
-  const [ localQuicTransport, remoteQuicTransport ] =
-      await makeTwoConnectedQuicTransports(t);
-  const localStream = localQuicTransport.createStream();
-  localStream.finish();
-  localStream.reset();
-  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
-  const { stream: remoteStream } = await remoteWatcher.wait_for('quicstream');
-  const remoteStreamWatcher = new EventWatcher(t, remoteStream, 'statechange');
-  await remoteStreamWatcher.wait_for('statechange');
-  assert_equals(remoteStream.state, 'closing');
-  await remoteStreamWatcher.wait_for('statechange');
-  assert_equals(remoteStream.state, 'closed');
-}, 'finish() then reset() fires two statechange events on the remote side.');
-
 promise_test(async t => {
   const [ localQuicTransport, remoteQuicTransport ] =
     await makeTwoConnectedQuicTransports(t);
@@ -213,6 +170,24 @@ promise_test(async t => {
 }, 'write() throws if total write buffered amount would be greater than ' +
     'maxWriteBufferedAmount.');
 
+promise_test(async t => {
+  const [ localQuicTransport, remoteQuicTransport ] =
+      await makeTwoConnectedQuicTransports(t);
+  const localStream = localQuicTransport.createStream();
+  localStream.write(new Uint8Array(10));
+  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
+  await remoteWatcher.wait_for('quicstream');
+}, 'write() causes quicstream event to fire on the remote transport.');
+
+promise_test(async t => {
+  const [ localQuicTransport, remoteQuicTransport ] =
+      await makeTwoConnectedQuicTransports(t);
+  const localStream = localQuicTransport.createStream();
+  localStream.finish();
+  const remoteWatcher = new EventWatcher(t, remoteQuicTransport, 'quicstream');
+  await remoteWatcher.wait_for('quicstream');
+}, 'finish() causes quicstream event to fire on the remote transport.');
+
 promise_test(async t => {
   const [ localQuicTransport, remoteQuicTransport ] =
       await makeTwoConnectedQuicTransports(t);
@@ -253,4 +228,66 @@ promise_test(async t => {
   assert_equals(localStream.writeBufferedAmount, 10);
 }, 'writeBufferedAmount maintained after finish() has been called.');
 
+promise_test(async t => {
+  const [ localQuicTransport, remoteQuicTransport ] =
+      await makeTwoConnectedQuicTransports(t);
+  const localStream = localQuicTransport.createStream();
+  await localStream.waitForWriteBufferedAmountBelow(0);
+}, 'waitForWriteBufferedAmountBelow(0) resolves immediately.');
+
+promise_test(async t => {
+  const [ localQuicTransport, remoteQuicTransport ] =
+      await makeTwoConnectedQuicTransports(t);
+  const localStream = localQuicTransport.createStream();
+  await localStream.waitForWriteBufferedAmountBelow(
+      localStream.maxWriteBufferedAmount);
+}, 'waitForWriteBufferedAmountBelow(maxWriteBufferedAmount) resolves ' +
+  'immediately.');
+
+promise_test(async t => {
+  const [ localQuicTransport, remoteQuicTransport ] =
+      await makeTwoConnectedQuicTransports(t);
+  const localStream = localQuicTransport.createStream();
+  localStream.write(new Uint8Array(localStream.maxWriteBufferedAmount));
+  const promise1 = localStream.waitForWriteBufferedAmountBelow(0);
+  const promise2 = localStream.waitForWriteBufferedAmountBelow(0);
+  localStream.finish();
+  await Promise.all([
+      promise_rejects(t, 'InvalidStateError', promise1),
+      promise_rejects(t, 'InvalidStateError', promise2)]);
+}, 'Pending waitForWriteBufferedAmountBelow() promises rejected after ' +
+  'finish().');
+
+promise_test(async t => {
+  const [ localQuicTransport, remoteQuicTransport ] =
+      await makeTwoConnectedQuicTransports(t);
+  const localStream = localQuicTransport.createStream();
+  localStream.write(new Uint8Array(localStream.maxWriteBufferedAmount));
+  const promise1 = localStream.waitForWriteBufferedAmountBelow(0);
+  const promise2 = localStream.waitForWriteBufferedAmountBelow(0);
+  localStream.reset();
+  await Promise.all([
+      promise_rejects(t, 'InvalidStateError', promise1),
+      promise_rejects(t, 'InvalidStateError', promise2)]);
+}, 'Pending waitForWriteBufferedAmountBelow() promises rejected after ' +
+  'reset().');
+
+closed_stream_test(async (t, stream) => {
+  await promise_rejects(t, 'InvalidStateError',
+      stream.waitForWriteBufferedAmountBelow(0));
+}, 'waitForWriteBufferedBelow() rejects with InvalidStateError.');
+
+promise_test(async t => {
+  const [ localQuicTransport, remoteQuicTransport ] =
+      await makeTwoConnectedQuicTransports(t);
+  const localStream = localQuicTransport.createStream();
+  assert_object_equals(
+      localStream.readInto(new Uint8Array(10)),
+      { amount: 0, finished: false });
+}, 'readInto() on new local stream returns amount 0.');
+
+closed_stream_test(async (t, stream) => {
+  assert_throws('InvalidStateError', () => stream.readInto(new Uint8Array(1)));
+}, 'readInto() throws InvalidStateError.');
+
 </script>