From 17d194dd89362fa59488010410f7bb429d796681 Mon Sep 17 00:00:00 2001
From: WPT Sync Bot <josh+wptsync@joshmatthews.net>
Date: Thu, 9 Apr 2020 08:18:59 +0000
Subject: [PATCH] Update web-platform-tests to revision
 6838f7e5fbddf9c77a93b0e8cd2e27c0fcfed86f

---
 .../CSS2/floats/hit-test-floats-002.html.ini  |   4 -
 ....html.ini => hit-test-floats-003.html.ini} |   2 +-
 .../CSS2/floats/hit-test-floats-005.html.ini  |   4 +
 .../abspos-descendent-001.html.ini            |   4 +
 ...lex-minimum-height-flex-items-022.html.ini |   2 +
 ...riting-modes-and-intrinsic-sizing.html.ini |   4 +
 .../css/css-flexbox/percentage-size.html.ini  |   4 +
 ...ition-relative-percentage-top-001.html.ini |   4 +
 .../cssom-view/elementFromPosition.html.ini   |   3 +
 ...e-displacement-negative-scale-001.html.ini |   2 +
 ...ference-merge-no-inputs.tentative.html.ini |   2 +
 .../effect-reference-obb-dimensions.html.ini  |   2 +
 .../effect-reference-on-span.html.ini         |   2 +
 .../fetch/content-type/response.window.js.ini |  15 +-
 .../fetch/content-type/script.window.js.ini   |   5 +-
 .../traverse_the_history_2.html.ini}          |   2 +-
 .../iframe_sandbox_popups_escaping-3.html.ini |   2 +-
 ...rame_sandbox_popups_nonescaping-3.html.ini |   3 +-
 .../natural-size-orientation.html.ini         |   7 +
 .../clicking-interactive-content.html.ini     |  70 +++
 .../audiobuffersource-multi-channels.html.ini |   3 +
 .../sub-sample-buffer-stitching.html.ini      |   6 +
 tests/wpt/metadata/MANIFEST.json              | 436 +++++++++++++++++-
 .../CSS2/floats/hit-test-floats-002.html.ini  |   4 -
 ....html.ini => hit-test-floats-003.html.ini} |   2 +-
 .../CSS2/floats/hit-test-floats-005.html.ini  |   4 +
 .../abspos-descendent-001.html.ini            |   4 +
 ...lex-minimum-height-flex-items-022.html.ini |   2 +
 ...riting-modes-and-intrinsic-sizing.html.ini |   4 +
 .../css/css-flexbox/percentage-size.html.ini  |   4 +
 ...ition-relative-percentage-top-001.html.ini |   4 +
 .../cssom-view/elementFromPosition.html.ini   |   3 +
 ...e-displacement-negative-scale-001.html.ini |   2 +
 ...ference-merge-no-inputs.tentative.html.ini |   2 +
 .../effect-reference-obb-dimensions.html.ini  |   2 +
 .../effect-reference-on-span.html.ini         |   2 +
 .../fetch/content-type/response.window.js.ini |  15 +-
 .../fetch/content-type/script.window.js.ini   |   5 +-
 .../traverse_the_history_2.html.ini}          |   2 +-
 .../iframe_sandbox_popups_escaping-3.html.ini |   2 +-
 ...rame_sandbox_popups_nonescaping-3.html.ini |   3 +-
 .../natural-size-orientation.html.ini         |   7 +
 .../clicking-interactive-content.html.ini     |  70 +++
 .../audiobuffersource-multi-channels.html.ini |   3 +
 .../sub-sample-buffer-stitching.html.ini      |   6 +
 .../common/rendering-utils.js                 |  19 +
 .../content-index.https.window.js             |  88 ++++
 .../content-index/resources.js                |  40 ++
 .../content-index/resources/sw.js             |   0
 ...Store_get_arguments.tentative.https.any.js |  10 -
 ...ieStore_opaque_origin.tentative.https.html |  73 +++
 .../css/css-contain/contain-size-063.html     |  62 +++
 .../reference/contain-size-063-ref.html       |   6 +
 .../css-flexbox/abspos-descendent-001.html    |  32 ++
 .../flex-minimum-height-flex-items-022.html   |  14 +
 .../flexbox-with-multi-column-property.html   |   1 +
 ...al-writing-modes-and-intrinsic-sizing.html |  36 ++
 .../css/css-flexbox/percentage-size.html      | 108 +++++
 .../position-relative-percentage-top-001.html |  43 ++
 .../css/css-pseudo/active-selection-063.html  |  59 +++
 .../ref-filled-green-100px-square.xht         |  19 +
 .../background-image-blur-repaint.html        |  11 +-
 .../effect-reference-delete.html              |  27 ++
 ...rence-displacement-negative-scale-001.html |  18 +
 ...t-reference-merge-no-inputs.tentative.html |  27 ++
 .../effect-reference-obb-dimensions.html      |  28 ++
 .../effect-reference-on-span.html             |  19 +
 .../effect-reference-rename-001.html          |  23 +
 .../effect-reference-rename-002.html          |  27 ++
 ...-region-negative-positioned-child-001.html |  41 ++
 .../filter-region-transformed-child-001.html  |  30 ++
 ...filter-update-on-attribute-change-001.html |  24 +
 .../effect-reference-delete-ref.html          |   5 +
 ...e-displacement-negative-scale-001-ref.html |   2 +
 ...ference-merge-no-inputs.tentative-ref.html |   2 +
 .../effect-reference-obb-dimensions-ref.html  |  16 +
 .../effect-reference-on-span-ref.html         |   5 +
 .../effect-reference-rename-001-ref.html      |  12 +
 .../effect-reference-rename-002-ref.html      |   7 +
 ...ion-negative-positioned-child-001-ref.html |  33 ++
 ...lter-region-transformed-child-001-ref.html |  23 +
 ...er-update-on-attribute-change-001-ref.html |  11 +
 ...t-element-with-opacity-filter-001-ref.html |   4 +
 ...ef.html => svg-relative-urls-001-ref.html} |   0
 .../reference/svg-relative-urls-002-ref.html  |   7 +
 .../root-element-with-opacity-filter-001.html |   9 +
 .../support/filter-from-external-url.css      |   3 +
 ...s-0001.html => svg-relative-urls-001.html} |   2 +-
 .../filter-effects/svg-relative-urls-002.html |  17 +
 ...d-event-fired-for-programmatic-scroll.html | 134 ++++++
 ...ollend-event-fired-for-scrollIntoView.html | 123 +++++
 .../natural-size-orientation.html             |  45 ++
 .../clicking-interactive-content.html         | 123 +++++
 ...king-noninteractive-labelable-content.html | 112 +++++
 ...ng-noninteractive-unlabelable-content.html | 119 +++++
 .../images/arrow-oriented-upright.jpg         | Bin 0 -> 1790 bytes
 .../interfaces/css-typed-om.idl               |  82 ++--
 .../interfaces/permissions.idl                |   4 +
 .../interfaces/worklets.idl                   |   2 +-
 .../slots-imperative-slot-api.tentative.html  |  49 +-
 .../ci/azure/safari-technology-preview.rb     |   8 +-
 .../tools/manifest/tests/test_manifest.py     |   7 +
 .../wptrunner/wptrunner/browsers/safari.py    |   6 +-
 .../wptrunner/tests/test_formatters.py        |  24 +
 .../wptrunner/tests/test_stability.py         |  23 +
 .../trust-tokens/end-to-end/README.txt        |   4 +
 ...ken-with-no-top-frame.tentative.https.html |  22 +
 .../has-trust-token.tentative.https.html      |  58 +++
 108 files changed, 2614 insertions(+), 114 deletions(-)
 delete mode 100644 tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
 rename tests/wpt/metadata-layout-2020/css/CSS2/floats/{hit-test-floats-004.html.ini => hit-test-floats-003.html.ini} (67%)
 create mode 100644 tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/css-flexbox/abspos-descendent-001.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/css-flexbox/flex-minimum-height-flex-items-022.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/css-flexbox/percentage-size.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/css-flexbox/position-relative-percentage-top-001.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-displacement-negative-scale-001.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-merge-no-inputs.tentative.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-obb-dimensions.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-on-span.html.ini
 rename tests/wpt/{metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini => metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini} (71%)
 create mode 100644 tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-img-element/natural-size-orientation.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/html/semantics/forms/the-label-element/clicking-interactive-content.html.ini
 delete mode 100644 tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
 rename tests/wpt/metadata/css/CSS2/floats/{hit-test-floats-004.html.ini => hit-test-floats-003.html.ini} (67%)
 create mode 100644 tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
 create mode 100644 tests/wpt/metadata/css/css-flexbox/abspos-descendent-001.html.ini
 create mode 100644 tests/wpt/metadata/css/css-flexbox/flex-minimum-height-flex-items-022.html.ini
 create mode 100644 tests/wpt/metadata/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html.ini
 create mode 100644 tests/wpt/metadata/css/css-flexbox/percentage-size.html.ini
 create mode 100644 tests/wpt/metadata/css/css-flexbox/position-relative-percentage-top-001.html.ini
 create mode 100644 tests/wpt/metadata/css/filter-effects/effect-reference-displacement-negative-scale-001.html.ini
 create mode 100644 tests/wpt/metadata/css/filter-effects/effect-reference-merge-no-inputs.tentative.html.ini
 create mode 100644 tests/wpt/metadata/css/filter-effects/effect-reference-obb-dimensions.html.ini
 create mode 100644 tests/wpt/metadata/css/filter-effects/effect-reference-on-span.html.ini
 rename tests/wpt/{metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini => metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini} (71%)
 create mode 100644 tests/wpt/metadata/html/semantics/embedded-content/the-img-element/natural-size-orientation.html.ini
 create mode 100644 tests/wpt/metadata/html/semantics/forms/the-label-element/clicking-interactive-content.html.ini
 create mode 100644 tests/wpt/web-platform-tests/common/rendering-utils.js
 create mode 100644 tests/wpt/web-platform-tests/content-index/content-index.https.window.js
 create mode 100644 tests/wpt/web-platform-tests/content-index/resources.js
 create mode 100644 tests/wpt/web-platform-tests/content-index/resources/sw.js
 create mode 100644 tests/wpt/web-platform-tests/cookie-store/cookieStore_opaque_origin.tentative.https.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-contain/contain-size-063.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-contain/reference/contain-size-063-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/abspos-descendent-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/flex-minimum-height-flex-items-022.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/percentage-size.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-flexbox/position-relative-percentage-top-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-pseudo/active-selection-063.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-pseudo/reference/ref-filled-green-100px-square.xht
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/effect-reference-delete.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/effect-reference-displacement-negative-scale-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/effect-reference-merge-no-inputs.tentative.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/effect-reference-obb-dimensions.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/effect-reference-on-span.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/effect-reference-rename-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/effect-reference-rename-002.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/filter-region-negative-positioned-child-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/filter-region-transformed-child-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference-filter-update-on-attribute-change-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-delete-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-displacement-negative-scale-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-merge-no-inputs.tentative-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-obb-dimensions-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-on-span-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-rename-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-rename-002-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/filter-region-negative-positioned-child-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/filter-region-transformed-child-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/reference-filter-update-on-attribute-change-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/root-element-with-opacity-filter-001-ref.html
 rename tests/wpt/web-platform-tests/css/filter-effects/reference/{svg-relative-urls-0001-ref.html => svg-relative-urls-001-ref.html} (100%)
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/reference/svg-relative-urls-002-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/root-element-with-opacity-filter-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/support/filter-from-external-url.css
 rename tests/wpt/web-platform-tests/css/filter-effects/{svg-relative-urls-0001.html => svg-relative-urls-001.html} (92%)
 create mode 100644 tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-002.html
 create mode 100644 tests/wpt/web-platform-tests/dom/events/scrolling/scrollend-event-fired-for-programmatic-scroll.html
 create mode 100644 tests/wpt/web-platform-tests/dom/events/scrolling/scrollend-event-fired-for-scrollIntoView.html
 create mode 100644 tests/wpt/web-platform-tests/html/semantics/embedded-content/the-img-element/natural-size-orientation.html
 create mode 100644 tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-interactive-content.html
 create mode 100644 tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-noninteractive-labelable-content.html
 create mode 100644 tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-noninteractive-unlabelable-content.html
 create mode 100644 tests/wpt/web-platform-tests/images/arrow-oriented-upright.jpg
 create mode 100644 tests/wpt/web-platform-tests/trust-tokens/end-to-end/README.txt
 create mode 100644 tests/wpt/web-platform-tests/trust-tokens/end-to-end/has-trust-token-with-no-top-frame.tentative.https.html
 create mode 100644 tests/wpt/web-platform-tests/trust-tokens/end-to-end/has-trust-token.tentative.https.html

diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
deleted file mode 100644
index f64b45fea6b..00000000000
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-002.html]
-  [Hit test float]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
similarity index 67%
rename from tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
rename to tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
index 4bfb0c2053a..f29da48a2a0 100644
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
@@ -1,4 +1,4 @@
-[hit-test-floats-004.html]
+[hit-test-floats-003.html]
   [Miss float below something else]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
new file mode 100644
index 00000000000..baa9f1a7541
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-005.html]
+  [Miss clipped float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/css-flexbox/abspos-descendent-001.html.ini b/tests/wpt/metadata-layout-2020/css/css-flexbox/abspos-descendent-001.html.ini
new file mode 100644
index 00000000000..c7ab3aaec53
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-flexbox/abspos-descendent-001.html.ini
@@ -0,0 +1,4 @@
+[abspos-descendent-001.html]
+  [.flexbox 1]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/css-flexbox/flex-minimum-height-flex-items-022.html.ini b/tests/wpt/metadata-layout-2020/css/css-flexbox/flex-minimum-height-flex-items-022.html.ini
new file mode 100644
index 00000000000..3e8f11fced8
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-flexbox/flex-minimum-height-flex-items-022.html.ini
@@ -0,0 +1,2 @@
+[flex-minimum-height-flex-items-022.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html.ini b/tests/wpt/metadata-layout-2020/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html.ini
new file mode 100644
index 00000000000..adb4df5cbe5
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html.ini
@@ -0,0 +1,4 @@
+[orthogonal-writing-modes-and-intrinsic-sizing.html]
+  [.flexbox 2]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/css-flexbox/percentage-size.html.ini b/tests/wpt/metadata-layout-2020/css/css-flexbox/percentage-size.html.ini
new file mode 100644
index 00000000000..936f73befed
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-flexbox/percentage-size.html.ini
@@ -0,0 +1,4 @@
+[percentage-size.html]
+  [.flexbox 8]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/css-flexbox/position-relative-percentage-top-001.html.ini b/tests/wpt/metadata-layout-2020/css/css-flexbox/position-relative-percentage-top-001.html.ini
new file mode 100644
index 00000000000..ff13b3f9f52
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-flexbox/position-relative-percentage-top-001.html.ini
@@ -0,0 +1,4 @@
+[position-relative-percentage-top-001.html]
+  [.border 1]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/cssom-view/elementFromPosition.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/elementFromPosition.html.ini
index c131078eace..23c61ede1a1 100644
--- a/tests/wpt/metadata-layout-2020/css/cssom-view/elementFromPosition.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/cssom-view/elementFromPosition.html.ini
@@ -17,3 +17,6 @@
   [test the top of layer]
     expected: FAIL
 
+  [test some point of the element: top left corner]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-displacement-negative-scale-001.html.ini b/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-displacement-negative-scale-001.html.ini
new file mode 100644
index 00000000000..18c6eafbf16
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-displacement-negative-scale-001.html.ini
@@ -0,0 +1,2 @@
+[effect-reference-displacement-negative-scale-001.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-merge-no-inputs.tentative.html.ini b/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-merge-no-inputs.tentative.html.ini
new file mode 100644
index 00000000000..45615ee1b57
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-merge-no-inputs.tentative.html.ini
@@ -0,0 +1,2 @@
+[effect-reference-merge-no-inputs.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-obb-dimensions.html.ini b/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-obb-dimensions.html.ini
new file mode 100644
index 00000000000..9937095d513
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-obb-dimensions.html.ini
@@ -0,0 +1,2 @@
+[effect-reference-obb-dimensions.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-on-span.html.ini b/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-on-span.html.ini
new file mode 100644
index 00000000000..adc9e6b7598
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/filter-effects/effect-reference-on-span.html.ini
@@ -0,0 +1,2 @@
+[effect-reference-on-span.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
index 8d26725e946..8bd785894f8 100644
--- a/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
@@ -318,15 +318,18 @@
   [<iframe>: combined response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html */*]
     expected: FAIL
 
+  [<iframe>: separate response Content-Type: text/plain */*]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini
index 5c001592859..8456d88e4f3 100644
--- a/tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini
@@ -56,6 +56,9 @@
   [separate text/javascript x/x]
     expected: FAIL
 
-  [separate text/javascript;charset=windows-1252 error text/javascript]
+  [separate text/javascript; charset=windows-1252 text/javascript]
+    expected: FAIL
+
+  [separate text/javascript;charset=windows-1252  text/javascript]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
similarity index 71%
rename from tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
rename to tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
index dc2e45516de..75d75b4cda2 100644
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_5.html]
+[traverse_the_history_2.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index 295031c1812..ab43ed7acf4 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-3.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index 7a36937927c..f4f994c5d6f 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_nonescaping-3.html]
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-img-element/natural-size-orientation.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-img-element/natural-size-orientation.html.ini
new file mode 100644
index 00000000000..efa8f0e8d34
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-img-element/natural-size-orientation.html.ini
@@ -0,0 +1,7 @@
+[natural-size-orientation.html]
+  [naturalWidth and naturalHeight return re-oriented values for an image with orientation metadata even with image-orientation:none]
+    expected: FAIL
+
+  [naturalWidth and naturalHeight return re-oriented values for an image with orientation metadata]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/forms/the-label-element/clicking-interactive-content.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/forms/the-label-element/clicking-interactive-content.html.ini
new file mode 100644
index 00000000000..58d16f8fd0d
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/semantics/forms/the-label-element/clicking-interactive-content.html.ini
@@ -0,0 +1,70 @@
+[clicking-interactive-content.html]
+  [interactive content <details></details> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <input> as first child of <label>]
+    expected: FAIL
+
+  [interactive content <select></select> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <iframe></iframe> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <select></select> as first child of <label>]
+    expected: FAIL
+
+  [interactive content <video tabindex=""></video> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <a tabindex=""></a> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <object tabindex=""></object> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <input> deeply nested under <label>]
+    expected: FAIL
+
+  [interactive content <embed> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <object usemap=""></object> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <select></select> deeply nested under <label>]
+    expected: FAIL
+
+  [interactive content <textarea></textarea> as first child of <label>]
+    expected: FAIL
+
+  [interactive content <img usemap=""> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <audio controls=""></audio> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <input type="hidden" tabindex=""> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <video controls=""></video> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <audio tabindex=""></audio> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <div tabindex=""></div> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <input> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <textarea></textarea> deeply nested under <label>]
+    expected: FAIL
+
+  [interactive content <img tabindex=""> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <textarea></textarea> as second child under <label>]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
index 5d9272664ee..256a49c578d 100644
--- a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
@@ -59,3 +59,6 @@
   [X Rendered audio for channel 5 does not equal [0,0.0626220703125,0.125030517578125,0.18695068359375,0.24810791015625,0.308319091796875,0.3673095703125,0.42486572265625,0.480743408203125,0.53472900390625,0.58660888671875,0.636199951171875,0.68328857421875,0.727691650390625,0.76922607421875,0.8077392578125...\] with an element-wise tolerance of {"absoluteThreshold":0.000030517578125,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t3.6732959747314453e-1\t6.2622070312500000e-2\t3.0470752716064453e-1\t4.8658168859649127e+0\t3.0517578125000000e-5\n\t[2\]\t6.8329977989196777e-1\t1.2503051757812500e-1\t5.5826926231384277e-1\t4.4650639949963384e+0\t3.0517578125000000e-5\n\t[3\]\t9.0373212099075317e-1\t1.8695068359375000e-1\t7.1678143739700317e-1\t3.8340669508039502e+0\t3.0517578125000000e-5\n\t[4\]\t9.9780619144439697e-1\t2.4810791015625000e-1\t7.4969828128814697e-1\t3.0216621502152523e+0\t3.0517578125000000e-5\n\t[5\]\t9.5236867666244507e-1\t3.0831909179687500e-1\t6.4404958486557007e-1\t2.0889059484187866e+0\t3.0517578125000000e-5\n\t...and 42303 more errors.\n\tMax AbsError of 1.9999977350234985e+0 at index of 10361.\n\t[10361\]\t9.9999773502349854e-1\t-1.0000000000000000e+0\t1.9999977350234985e+0\t1.9999977350234985e+0\t3.0517578125000000e-5\n\tMax RelError of Infinity at index of 7056.\n\t[7056\]\t5.8778524398803711e-1\t0.0000000000000000e+0\t5.8778524398803711e-1\tInfinity\t3.0517578125000000e-5\n]
     expected: FAIL
 
+  [X Rendered audio for channel 5 does not equal [0,0.0626220703125,0.125030517578125,0.18695068359375,0.24810791015625,0.308319091796875,0.3673095703125,0.42486572265625,0.480743408203125,0.53472900390625,0.58660888671875,0.636199951171875,0.68328857421875,0.727691650390625,0.76922607421875,0.8077392578125...\] with an element-wise tolerance of {"absoluteThreshold":0.000030517578125,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t3.6732959747314453e-1\t6.2622070312500000e-2\t3.0470752716064453e-1\t4.8658168859649127e+0\t3.0517578125000000e-5\n\t[2\]\t6.8329977989196777e-1\t1.2503051757812500e-1\t5.5826926231384277e-1\t4.4650639949963384e+0\t3.0517578125000000e-5\n\t[3\]\t9.0373212099075317e-1\t1.8695068359375000e-1\t7.1678143739700317e-1\t3.8340669508039502e+0\t3.0517578125000000e-5\n\t[4\]\t9.9780619144439697e-1\t2.4810791015625000e-1\t7.4969828128814697e-1\t3.0216621502152523e+0\t3.0517578125000000e-5\n\t[5\]\t9.5236867666244507e-1\t3.0831909179687500e-1\t6.4404958486557007e-1\t2.0889059484187866e+0\t3.0517578125000000e-5\n\t...and 44063 more errors.\n\tMax AbsError of 1.9999977350234985e+0 at index of 36821.\n\t[36821\]\t9.9999773502349854e-1\t-1.0000000000000000e+0\t1.9999977350234985e+0\t1.9999977350234985e+0\t3.0517578125000000e-5\n\tMax RelError of Infinity at index of 12348.\n\t[12348\]\t9.5105654001235962e-1\t0.0000000000000000e+0\t9.5105654001235962e-1\tInfinity\t3.0517578125000000e-5\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
index 2540cf056cf..7cb62c82da3 100644
--- a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
@@ -95,3 +95,9 @@
   [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[31080\]\t-2.4090957641601563e+0\t5.6332010030746460e-1\t2.9724158644676208e+0\t5.2766018163478501e+0\t9.0957000000000003e-5\n\t[31081\]\t4.5659909161559839e-41\t6.1397600173950195e-1\t6.1397600173950195e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 2.9724158644676208e+0 at index of 31080.\n\tMax RelError of 5.2766018163478501e+0 at index of 31080.\n]
     expected: FAIL
 
+  [X SNR (45.01863889546189 dB) is not greater than or equal to 85.58. Got 45.01863889546189.]
+    expected: FAIL
+
+  [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[31080\]\t-8.5582718212587339e-15\t5.6332010030746460e-1\t5.6332010030747315e-1\t1.0000000000000151e+0\t9.0957000000000003e-5\n\t[31081\]\t4.5672520847738763e-41\t6.1397600173950195e-1\t6.1397600173950195e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 6.1397600173950195e-1 at index of 31081.\n\tMax RelError of 1.0000000000000151e+0 at index of 31080.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 5b2ccdfb94b..7376fa59b3c 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -127129,6 +127129,19 @@
        {}
       ]
      ],
+     "contain-size-063.html": [
+      "31a6015cac35faa04b8f77d4388e429e2266ffdd",
+      [
+       null,
+       [
+        [
+         "/css/css-contain/reference/contain-size-063-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "contain-size-baseline-001.html": [
       "0ffed1b3b6a08831792b0a5ac40d1340c142c48d",
       [
@@ -133062,6 +133075,19 @@
        {}
       ]
      ],
+     "flex-minimum-height-flex-items-022.html": [
+      "943ac525fb570adcf62d7ff0edfc88cdd5727a85",
+      [
+       null,
+       [
+        [
+         "/css/reference/ref-filled-green-100px-square.xht",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "flex-minimum-width-flex-items-001.xht": [
       "cd18483ba414160c46e30bc282dec0c2fcd2f418",
       [
@@ -133583,7 +133609,7 @@
       ]
      ],
      "flexbox-with-multi-column-property.html": [
-      "5b11b0f9fd245a451e289229c4ed3e6e183dd40b",
+      "56b56ca0935bc8869a4b19e0d70e2cf7cdb0a0b8",
       [
        null,
        [
@@ -157041,6 +157067,19 @@
      ]
     },
     "css-pseudo": {
+     "active-selection-063.html": [
+      "1d9a1c1ecd81008d4d3d5891b717d6bdadb3efe9",
+      [
+       null,
+       [
+        [
+         "/css/css-pseudo/reference/ref-filled-green-100px-square.xht",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "before-dynamic-display-none.html": [
       "d8844f9c961e94b2fd353628cb2c6e3e12123054",
       [
@@ -202900,7 +202939,7 @@
       ]
      ],
      "background-image-blur-repaint.html": [
-      "7b3df263081ecceb6517e056e60cfaa35b9981a0",
+      "4a3c00c7ad334a67312346ce57aa81ac96d024d2",
       [
        null,
        [
@@ -203263,6 +203302,32 @@
        {}
       ]
      ],
+     "effect-reference-delete.html": [
+      "314c9a7d123bd65b04483956513337116f7e0382",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/effect-reference-delete-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "effect-reference-displacement-negative-scale-001.html": [
+      "282ea100508948125f3a834af9dd37e0be210a10",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/effect-reference-displacement-negative-scale-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "effect-reference-lighting-no-light.tentative.html": [
       "beefd47a544d5c82b4b1d468ce99938e6d9924d9",
       [
@@ -203276,6 +203341,71 @@
        {}
       ]
      ],
+     "effect-reference-merge-no-inputs.tentative.html": [
+      "4fb67db643dd5aebdbff53a0773035747c18836c",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/effect-reference-merge-no-inputs.tentative-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "effect-reference-obb-dimensions.html": [
+      "2bb424d90cd6b03145c481eb8be6b96c9d52d715",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/effect-reference-obb-dimensions-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "effect-reference-on-span.html": [
+      "66bd8fa886a86e5f5738d8373e2611c39cc1c8e3",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/effect-reference-on-span-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "effect-reference-rename-001.html": [
+      "6c8374536f4cf748784b7a58fc158d230ea3557f",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/effect-reference-rename-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "effect-reference-rename-002.html": [
+      "86528819bc7a0459a3d9c506284fc7d614049a00",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/effect-reference-rename-002-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "empty-element-with-filter.html": [
       "3e8fc7e164cde54a8ff81a241909c2f729f32afb",
       [
@@ -203510,6 +203640,32 @@
        {}
       ]
      ],
+     "filter-region-negative-positioned-child-001.html": [
+      "8f302ab52abe2f1008ca60d46fbc77d8ce35c22a",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/filter-region-negative-positioned-child-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "filter-region-transformed-child-001.html": [
+      "cd097faf706a1d15f4ce5616f7e67fbf234dc50c",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/filter-region-transformed-child-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "filter-saturate-001-test.html": [
       "52182deb3fed8985bc810dd1e5af95e3095979ae",
       [
@@ -203757,6 +203913,32 @@
        {}
       ]
      ],
+     "reference-filter-update-on-attribute-change-001.html": [
+      "cc5ac7c65d720804953df11f2b2cab268e383610",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/reference-filter-update-on-attribute-change-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "root-element-with-opacity-filter-001.html": [
+      "577e2bd4c032799a159c1c7542812e66081bfcea",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/root-element-with-opacity-filter-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "svg-feflood-001.html": [
       "4588cf93f6ca52386ce8af1dbe6e0462572bb559",
       [
@@ -203796,13 +203978,26 @@
        {}
       ]
      ],
-     "svg-relative-urls-0001.html": [
-      "3edf7447b8f7fa0cf55f87a6ba051797bdd6f914",
+     "svg-relative-urls-001.html": [
+      "5dd382c6dfd2271449627e956f7723e810662cee",
       [
        null,
        [
         [
-         "/css/filter-effects/reference/svg-relative-urls-0001-ref.html",
+         "/css/filter-effects/reference/svg-relative-urls-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "svg-relative-urls-002.html": [
+      "278ea1645437f7afa797091b2562b9ad3430e458",
+      [
+       null,
+       [
+        [
+         "/css/filter-effects/reference/svg-relative-urls-002-ref.html",
          "=="
         ]
        ],
@@ -242786,6 +242981,10 @@
      "6805c323df5a975231648b830e33ce183c3cbbd3",
      []
     ],
+    "rendering-utils.js": [
+     "46283bd5d078a14922e24160053017b6e8cb072c",
+     []
+    ],
     "sab.js": [
      "c7fd1a742e64f66744b416584952effe29fda208",
      []
@@ -261285,6 +261484,18 @@
      []
     ]
    },
+   "content-index": {
+    "resources": {
+     "sw.js": [
+      "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+      []
+     ]
+    },
+    "resources.js": [
+     "1a758abe27e0b31dd22d2b8c04a7943271dea95c",
+     []
+    ]
+   },
    "content-security-policy": {
     "META.yml": [
      "ee8f1ea7e07b94711ddc65e43a6c32dbc5983612",
@@ -284314,6 +284525,10 @@
        "dbfa77f6ac0dfdc03d2f8a8b0407a704617c73a7",
        []
       ],
+      "contain-size-063-ref.html": [
+       "9544ebcac23af0c2caaa279154878c10349990ae",
+       []
+      ],
       "contain-size-breaks-001-ref.html": [
        "b807ea5a1160a4d29e46b91ca283c45b3c2fdeb5",
        []
@@ -296875,6 +297090,12 @@
       "92ae71d83fcbea52e4120ed28af5438dd54d4509",
       []
      ],
+     "reference": {
+      "ref-filled-green-100px-square.xht": [
+       "05a13794482a94f6c10bd9d4c98704e63ef60331",
+       []
+      ]
+     },
      "selection-text-shadow-016-ref.html": [
       "5e3eabc976e2bc75b6a290f2b740b54d8cdbf99a",
       []
@@ -307460,14 +307681,50 @@
        "45192b13451fdfe2f00c17dbc84d30a770426e86",
        []
       ],
+      "effect-reference-delete-ref.html": [
+       "918715265fa4c1b95ec46d04014ea82e73cbcd40",
+       []
+      ],
+      "effect-reference-displacement-negative-scale-001-ref.html": [
+       "f718ea6abfbab54333ba674ff0dcd320d8672bcd",
+       []
+      ],
       "effect-reference-lighting-no-light.tentative-ref.html": [
        "e863a6703b2acebbdb10a5eef342cbbd1b6b5bc9",
        []
       ],
+      "effect-reference-merge-no-inputs.tentative-ref.html": [
+       "5743e0c3de96ba4fbdf814bf5ec997e0c93e65da",
+       []
+      ],
+      "effect-reference-obb-dimensions-ref.html": [
+       "f460c439aa8d6e56a8ad5a0826d6e0c0daf5df11",
+       []
+      ],
+      "effect-reference-on-span-ref.html": [
+       "76a7953831720fbe9556afdc4800879c5cdd2634",
+       []
+      ],
+      "effect-reference-rename-001-ref.html": [
+       "fe3beae2d4997a7603153c5c885f01c7ca656bcd",
+       []
+      ],
+      "effect-reference-rename-002-ref.html": [
+       "d8719aa43a43ebbfebe6caa43b961eeee10b99c5",
+       []
+      ],
       "empty-element-with-filter-ref.html": [
        "cf2c997f6c0d60cac9896c0b0014189cea7790bc",
        []
       ],
+      "filter-region-negative-positioned-child-001-ref.html": [
+       "c9da47b1b434303f0111e8d1f03d5518e8f573fc",
+       []
+      ],
+      "filter-region-transformed-child-001-ref.html": [
+       "bcf649411930d5cc839dca2a5098e12c0c49fda8",
+       []
+      ],
       "filter-url-to-non-existent-filter-001-ref.html": [
        "c1aeed8c441e6f72c6faa893d64ae30bdacbec06",
        []
@@ -307496,6 +307753,14 @@
        "01546f115d112aa27495b3fd45347b22e30fe7ee",
        []
       ],
+      "reference-filter-update-on-attribute-change-001-ref.html": [
+       "91326ef585e6910cd499ad2d6650f18fca486921",
+       []
+      ],
+      "root-element-with-opacity-filter-001-ref.html": [
+       "cd16e54c8e5b73b02585c606d0133bb36c821b31",
+       []
+      ],
       "svg-feflood-ref.html": [
        "5623b08ecd71b292e698ee249a79b59d0046300f",
        []
@@ -307508,9 +307773,13 @@
        "5623b08ecd71b292e698ee249a79b59d0046300f",
        []
       ],
-      "svg-relative-urls-0001-ref.html": [
+      "svg-relative-urls-001-ref.html": [
        "82f301f5f6ff95f743f2488093fe63ac766a84bf",
        []
+      ],
+      "svg-relative-urls-002-ref.html": [
+       "344ee53e032e1bd588e971e16af2af5d0a6bcf41",
+       []
       ]
      },
      "support": {
@@ -307582,6 +307851,10 @@
        "0d5fc65c6fdfe2b4f507326fb379e468dbe85d46",
        []
       ],
+      "filter-from-external-url.css": [
+       "2940461016cad90f9218db1c7355434d9ca54e1c",
+       []
+      ],
       "filtersubregion00.png": [
        "b6c4bccb63cd850f473a59d9e3c0cf26c699db13",
        []
@@ -327090,6 +327363,10 @@
      "e96e6471e6a8df81c462c47be588ffbbcac5ecfb",
      []
     ],
+    "arrow-oriented-upright.jpg": [
+     "cebc99af14b6050a416031cf219f8cd7a72ee458",
+     []
+    ],
     "background.png": [
      "6db6c6b1b9d851c7a85b93ddc9e5ddf368ac0a7e",
      []
@@ -328027,7 +328304,7 @@
      []
     ],
     "css-typed-om.idl": [
-     "df9669e5637f18de89792facba8fabe234d658f8",
+     "00d3f49bfe653ce4782e13e6c0d46c65783874cc",
      []
     ],
     "cssom-view.idl": [
@@ -328251,7 +328528,7 @@
      []
     ],
     "permissions.idl": [
-     "9cde372a127188ef1081ad390d5301d2d8b198f8",
+     "d45c7f93cac7683a76e89d0e7f429f5f3cb695d9",
      []
     ],
     "picture-in-picture.idl": [
@@ -328479,7 +328756,7 @@
      []
     ],
     "worklets.idl": [
-     "16187664b3b4124758c84d054b02b8ddbf585508",
+     "f89eacd50bd58c02860c84b6e4c486ab978a5018",
      []
     ],
     "xhr.idl": [
@@ -338033,7 +338310,7 @@
        []
       ],
       "safari-technology-preview.rb": [
-       "5f8d6806107d8abd7418ae022e59a1af9da1632f",
+       "d58664c5b6c67e32c63f1d122625a56211371511",
        []
       ],
       "system_info.yml": [
@@ -338513,7 +338790,7 @@
        []
       ],
       "test_manifest.py": [
-       "6f11eb5974060c91c7ce849de2e54b6b30e78926",
+       "6d329ad38f969106c28e73de81dcbf1c468f9adf",
        []
       ],
       "test_sourcefile.py": [
@@ -343644,7 +343921,7 @@
         []
        ],
        "safari.py": [
-        "dba8432b5a75faf402cf74042b7a59c4b66f814a",
+        "cb2b175d4dfbc3166e4ad5a6afe174ffdbc6ff8a",
         []
        ],
        "sauce.py": [
@@ -343910,7 +344187,7 @@
         []
        ],
        "test_formatters.py": [
-        "72f3a591ad7f90532671ccb897dfcb161bc8f45d",
+        "60b1b0a5a878cda9c500eaae25f3fe89eadf819c",
         []
        ],
        "test_manifestexpected.py": [
@@ -343922,7 +344199,7 @@
         []
        ],
        "test_stability.py": [
-        "77cb23a71e13a6889d21d1ff47aa3dacf08a7425",
+        "9a8fccf935a136c6050e852f9a5704138b0d3f41",
         []
        ],
        "test_testloader.py": [
@@ -344433,6 +344710,14 @@
      ]
     }
    },
+   "trust-tokens": {
+    "end-to-end": {
+     "README.txt": [
+      "a86468df9d6b21dfc361d178eb3afc4b3c865fea",
+      []
+     ]
+    }
+   },
    "trusted-types": {
     "META.yml": [
      "d0743949b6a122d8bd0adf7b1ed0181f0c51429d",
@@ -373348,6 +373633,26 @@
      ]
     ]
    },
+   "content-index": {
+    "content-index.https.window.js": [
+     "082ebc3b9ec599da21351d4be1f21a79810ec65d",
+     [
+      "content-index/content-index.https.window.html",
+      {
+       "script_metadata": [
+        [
+         "script",
+         "/service-workers/service-worker/resources/test-helpers.sub.js"
+        ],
+        [
+         "script",
+         "resources.js"
+        ]
+       ]
+      }
+     ]
+    ]
+   },
    "content-security-policy": {
     "base-uri": {
      "base-uri-allow.sub.html": [
@@ -377254,7 +377559,7 @@
      ]
     ],
     "cookieStore_get_arguments.tentative.https.any.js": [
-     "79fc0d37488ef6dfed1f0bc210e2116111acc776",
+     "34f7dbcd948fd5e590b0e9f715ad878f4de9694d",
      [
       "cookie-store/cookieStore_get_arguments.tentative.https.any.html",
       {
@@ -377406,6 +377711,13 @@
       {}
      ]
     ],
+    "cookieStore_opaque_origin.tentative.https.html": [
+     "bbf0dbd9864c574fadbd2b464618766ff1919a19",
+     [
+      null,
+      {}
+     ]
+    ],
     "cookieStore_set_arguments.tentative.https.any.js": [
      "b9074c827d2a1ffa9b3ee1a0a28714396c4ae0d8",
      [
@@ -382064,6 +382376,13 @@
      ]
     },
     "css-flexbox": {
+     "abspos-descendent-001.html": [
+      "1aebb0f319f566db19070e7bad66e622a4ab8d3f",
+      [
+       null,
+       {}
+      ]
+     ],
      "align-content-wrap-001.html": [
       "1e0ce42c75f462aea952113582e743bf8bda4dd8",
       [
@@ -382964,6 +383283,13 @@
        {}
       ]
      ],
+     "orthogonal-writing-modes-and-intrinsic-sizing.html": [
+      "032cd47df5d6ae928bf766aad248ccf120bd033a",
+      [
+       null,
+       {}
+      ]
+     ],
      "overflow-auto-002.html": [
       "2bb04a2604076d0883c1322e60015316f6f34b10",
       [
@@ -383246,6 +383572,13 @@
        {}
       ]
      ],
+     "percentage-size.html": [
+      "44c298672f2e39716d21d36220b270f0387aac2f",
+      [
+       null,
+       {}
+      ]
+     ],
      "position-absolute-001.html": [
       "f60174084652a3373c6b1873e02da373575c53cd",
       [
@@ -383274,6 +383607,13 @@
        {}
       ]
      ],
+     "position-relative-percentage-top-001.html": [
+      "3ec47c1d42d69330c616a87f0b22208f8d6196a6",
+      [
+       null,
+       {}
+      ]
+     ],
      "quirks-auto-block-size-with-percentage-item.html": [
       "966f39f173952f01268dcd26a9a5892bf4a689a9",
       [
@@ -404532,6 +404872,26 @@
         }
        ]
       ],
+      "scrollend-event-fired-for-programmatic-scroll.html": [
+       "79b5f5f0186871b7c139c551faf5cf1ef15f77b9",
+       [
+        null,
+        {
+         "testdriver": true,
+         "timeout": "long"
+        }
+       ]
+      ],
+      "scrollend-event-fired-for-scrollIntoView.html": [
+       "63e1c3e22eaafcb84b98f542778787b7ae397ca4",
+       [
+        null,
+        {
+         "testdriver": true,
+         "timeout": "long"
+        }
+       ]
+      ],
       "scrollend-event-fired-to-document.html": [
        "a35508e2c557a9280802ab3d0d937fce03628e44",
        [
@@ -436088,6 +436448,13 @@
          {}
         ]
        ],
+       "natural-size-orientation.html": [
+        "662dc0804fa32bff539467166fab134ce8ab22ff",
+        [
+         null,
+         {}
+        ]
+       ],
        "non-active-document.html": [
         "6072138cb387d98e3bc8ae86971e424fe7061194",
         [
@@ -437647,6 +438014,27 @@
        ]
       },
       "the-label-element": {
+       "clicking-interactive-content.html": [
+        "60a80fad9d2aebf284e252949fba7b2bb15af134",
+        [
+         null,
+         {}
+        ]
+       ],
+       "clicking-noninteractive-labelable-content.html": [
+        "5563ef1e3c7472e8e831ee8d00c412dbcc0ef45a",
+        [
+         null,
+         {}
+        ]
+       ],
+       "clicking-noninteractive-unlabelable-content.html": [
+        "233168f5664cf972ad579ae4ccba7f674c965d25",
+        [
+         null,
+         {}
+        ]
+       ],
        "forward-focus-to-associated-element.html": [
         "86e3f652af0fb2b21d65d79da0c81a3e1daefdaa",
         [
@@ -482100,7 +482488,7 @@
      ]
     ],
     "slots-imperative-slot-api.tentative.html": [
-     "56dd71b1156cc3ac146a794e28e3b4b2bd58d143",
+     "6d3997b085c99b5163f1f1a747b792a5dbca9dea",
      [
       null,
       {}
@@ -491828,6 +492216,22 @@
     ]
    },
    "trust-tokens": {
+    "end-to-end": {
+     "has-trust-token-with-no-top-frame.tentative.https.html": [
+      "4788cd9907331f07abc2374b4e4b48091877fc1c",
+      [
+       null,
+       {}
+      ]
+     ],
+     "has-trust-token.tentative.https.html": [
+      "17e037f739391c5adcab67fc54dd8d4f0cb7764f",
+      [
+       null,
+       {}
+      ]
+     ]
+    },
     "trust-token-parameter-validation-xhr.tentative.https.html": [
      "4a6c30c6d32424c9b1d3dce883d3f44862c6e3b6",
      [
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
deleted file mode 100644
index f64b45fea6b..00000000000
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-002.html]
-  [Hit test float]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
similarity index 67%
rename from tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
rename to tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
index 4bfb0c2053a..f29da48a2a0 100644
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
@@ -1,4 +1,4 @@
-[hit-test-floats-004.html]
+[hit-test-floats-003.html]
   [Miss float below something else]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
new file mode 100644
index 00000000000..baa9f1a7541
--- /dev/null
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-005.html]
+  [Miss clipped float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-flexbox/abspos-descendent-001.html.ini b/tests/wpt/metadata/css/css-flexbox/abspos-descendent-001.html.ini
new file mode 100644
index 00000000000..c7ab3aaec53
--- /dev/null
+++ b/tests/wpt/metadata/css/css-flexbox/abspos-descendent-001.html.ini
@@ -0,0 +1,4 @@
+[abspos-descendent-001.html]
+  [.flexbox 1]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-flexbox/flex-minimum-height-flex-items-022.html.ini b/tests/wpt/metadata/css/css-flexbox/flex-minimum-height-flex-items-022.html.ini
new file mode 100644
index 00000000000..3e8f11fced8
--- /dev/null
+++ b/tests/wpt/metadata/css/css-flexbox/flex-minimum-height-flex-items-022.html.ini
@@ -0,0 +1,2 @@
+[flex-minimum-height-flex-items-022.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html.ini b/tests/wpt/metadata/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html.ini
new file mode 100644
index 00000000000..adb4df5cbe5
--- /dev/null
+++ b/tests/wpt/metadata/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html.ini
@@ -0,0 +1,4 @@
+[orthogonal-writing-modes-and-intrinsic-sizing.html]
+  [.flexbox 2]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-flexbox/percentage-size.html.ini b/tests/wpt/metadata/css/css-flexbox/percentage-size.html.ini
new file mode 100644
index 00000000000..936f73befed
--- /dev/null
+++ b/tests/wpt/metadata/css/css-flexbox/percentage-size.html.ini
@@ -0,0 +1,4 @@
+[percentage-size.html]
+  [.flexbox 8]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-flexbox/position-relative-percentage-top-001.html.ini b/tests/wpt/metadata/css/css-flexbox/position-relative-percentage-top-001.html.ini
new file mode 100644
index 00000000000..ff13b3f9f52
--- /dev/null
+++ b/tests/wpt/metadata/css/css-flexbox/position-relative-percentage-top-001.html.ini
@@ -0,0 +1,4 @@
+[position-relative-percentage-top-001.html]
+  [.border 1]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini b/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini
index 85e94926cb3..5733d536fd3 100644
--- a/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini
+++ b/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini
@@ -21,3 +21,6 @@
   [test the top of layer]
     expected: FAIL
 
+  [test some point of the element: top left corner]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/filter-effects/effect-reference-displacement-negative-scale-001.html.ini b/tests/wpt/metadata/css/filter-effects/effect-reference-displacement-negative-scale-001.html.ini
new file mode 100644
index 00000000000..18c6eafbf16
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/effect-reference-displacement-negative-scale-001.html.ini
@@ -0,0 +1,2 @@
+[effect-reference-displacement-negative-scale-001.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/filter-effects/effect-reference-merge-no-inputs.tentative.html.ini b/tests/wpt/metadata/css/filter-effects/effect-reference-merge-no-inputs.tentative.html.ini
new file mode 100644
index 00000000000..45615ee1b57
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/effect-reference-merge-no-inputs.tentative.html.ini
@@ -0,0 +1,2 @@
+[effect-reference-merge-no-inputs.tentative.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/filter-effects/effect-reference-obb-dimensions.html.ini b/tests/wpt/metadata/css/filter-effects/effect-reference-obb-dimensions.html.ini
new file mode 100644
index 00000000000..9937095d513
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/effect-reference-obb-dimensions.html.ini
@@ -0,0 +1,2 @@
+[effect-reference-obb-dimensions.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/filter-effects/effect-reference-on-span.html.ini b/tests/wpt/metadata/css/filter-effects/effect-reference-on-span.html.ini
new file mode 100644
index 00000000000..adc9e6b7598
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/effect-reference-on-span.html.ini
@@ -0,0 +1,2 @@
+[effect-reference-on-span.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/fetch/content-type/response.window.js.ini b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
index 5e1fb1f51f7..f88cdea09d8 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -318,15 +318,18 @@
   [<iframe>: combined response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html */*]
     expected: FAIL
 
+  [<iframe>: separate response Content-Type: text/plain */*]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/fetch/content-type/script.window.js.ini b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
index 5c001592859..8456d88e4f3 100644
--- a/tests/wpt/metadata/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
@@ -56,6 +56,9 @@
   [separate text/javascript x/x]
     expected: FAIL
 
-  [separate text/javascript;charset=windows-1252 error text/javascript]
+  [separate text/javascript; charset=windows-1252 text/javascript]
+    expected: FAIL
+
+  [separate text/javascript;charset=windows-1252  text/javascript]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/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_2.html.ini
similarity index 71%
rename from tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
rename to tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
index dc2e45516de..75d75b4cda2 100644
--- a/tests/wpt/metadata-layout-2020/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_2.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_5.html]
+[traverse_the_history_2.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index 5f60c78e73c..b3bd9f4c289 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_escaping-3.html]
   type: testharness
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index dc856a3d5a3..e440b1e38c6 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,5 +1,6 @@
 [iframe_sandbox_popups_nonescaping-3.html]
   type: testharness
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/natural-size-orientation.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/natural-size-orientation.html.ini
new file mode 100644
index 00000000000..efa8f0e8d34
--- /dev/null
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/natural-size-orientation.html.ini
@@ -0,0 +1,7 @@
+[natural-size-orientation.html]
+  [naturalWidth and naturalHeight return re-oriented values for an image with orientation metadata even with image-orientation:none]
+    expected: FAIL
+
+  [naturalWidth and naturalHeight return re-oriented values for an image with orientation metadata]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/semantics/forms/the-label-element/clicking-interactive-content.html.ini b/tests/wpt/metadata/html/semantics/forms/the-label-element/clicking-interactive-content.html.ini
new file mode 100644
index 00000000000..58d16f8fd0d
--- /dev/null
+++ b/tests/wpt/metadata/html/semantics/forms/the-label-element/clicking-interactive-content.html.ini
@@ -0,0 +1,70 @@
+[clicking-interactive-content.html]
+  [interactive content <details></details> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <input> as first child of <label>]
+    expected: FAIL
+
+  [interactive content <select></select> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <iframe></iframe> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <select></select> as first child of <label>]
+    expected: FAIL
+
+  [interactive content <video tabindex=""></video> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <a tabindex=""></a> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <object tabindex=""></object> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <input> deeply nested under <label>]
+    expected: FAIL
+
+  [interactive content <embed> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <object usemap=""></object> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <select></select> deeply nested under <label>]
+    expected: FAIL
+
+  [interactive content <textarea></textarea> as first child of <label>]
+    expected: FAIL
+
+  [interactive content <img usemap=""> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <audio controls=""></audio> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <input type="hidden" tabindex=""> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <video controls=""></video> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <audio tabindex=""></audio> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <div tabindex=""></div> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <input> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <textarea></textarea> deeply nested under <label>]
+    expected: FAIL
+
+  [interactive content <img tabindex=""> as second child under <label>]
+    expected: FAIL
+
+  [interactive content <textarea></textarea> as second child under <label>]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
index 6e870f95c0c..192675d0844 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-multi-channels.html.ini
@@ -128,3 +128,6 @@
   [X Rendered audio for channel 5 does not equal [0,0.0626220703125,0.125030517578125,0.18695068359375,0.24810791015625,0.308319091796875,0.3673095703125,0.42486572265625,0.480743408203125,0.53472900390625,0.58660888671875,0.636199951171875,0.68328857421875,0.727691650390625,0.76922607421875,0.8077392578125...\] with an element-wise tolerance of {"absoluteThreshold":0.000030517578125,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t3.6732959747314453e-1\t6.2622070312500000e-2\t3.0470752716064453e-1\t4.8658168859649127e+0\t3.0517578125000000e-5\n\t[2\]\t6.8329977989196777e-1\t1.2503051757812500e-1\t5.5826926231384277e-1\t4.4650639949963384e+0\t3.0517578125000000e-5\n\t[3\]\t9.0373212099075317e-1\t1.8695068359375000e-1\t7.1678143739700317e-1\t3.8340669508039502e+0\t3.0517578125000000e-5\n\t[4\]\t9.9780619144439697e-1\t2.4810791015625000e-1\t7.4969828128814697e-1\t3.0216621502152523e+0\t3.0517578125000000e-5\n\t[5\]\t9.5236867666244507e-1\t3.0831909179687500e-1\t6.4404958486557007e-1\t2.0889059484187866e+0\t3.0517578125000000e-5\n\t...and 42303 more errors.\n\tMax AbsError of 1.9999977350234985e+0 at index of 10361.\n\t[10361\]\t9.9999773502349854e-1\t-1.0000000000000000e+0\t1.9999977350234985e+0\t1.9999977350234985e+0\t3.0517578125000000e-5\n\tMax RelError of Infinity at index of 7056.\n\t[7056\]\t5.8778524398803711e-1\t0.0000000000000000e+0\t5.8778524398803711e-1\tInfinity\t3.0517578125000000e-5\n]
     expected: FAIL
 
+  [X Rendered audio for channel 5 does not equal [0,0.0626220703125,0.125030517578125,0.18695068359375,0.24810791015625,0.308319091796875,0.3673095703125,0.42486572265625,0.480743408203125,0.53472900390625,0.58660888671875,0.636199951171875,0.68328857421875,0.727691650390625,0.76922607421875,0.8077392578125...\] with an element-wise tolerance of {"absoluteThreshold":0.000030517578125,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[1\]\t3.6732959747314453e-1\t6.2622070312500000e-2\t3.0470752716064453e-1\t4.8658168859649127e+0\t3.0517578125000000e-5\n\t[2\]\t6.8329977989196777e-1\t1.2503051757812500e-1\t5.5826926231384277e-1\t4.4650639949963384e+0\t3.0517578125000000e-5\n\t[3\]\t9.0373212099075317e-1\t1.8695068359375000e-1\t7.1678143739700317e-1\t3.8340669508039502e+0\t3.0517578125000000e-5\n\t[4\]\t9.9780619144439697e-1\t2.4810791015625000e-1\t7.4969828128814697e-1\t3.0216621502152523e+0\t3.0517578125000000e-5\n\t[5\]\t9.5236867666244507e-1\t3.0831909179687500e-1\t6.4404958486557007e-1\t2.0889059484187866e+0\t3.0517578125000000e-5\n\t...and 44063 more errors.\n\tMax AbsError of 1.9999977350234985e+0 at index of 36821.\n\t[36821\]\t9.9999773502349854e-1\t-1.0000000000000000e+0\t1.9999977350234985e+0\t1.9999977350234985e+0\t3.0517578125000000e-5\n\tMax RelError of Infinity at index of 12348.\n\t[12348\]\t9.5105654001235962e-1\t0.0000000000000000e+0\t9.5105654001235962e-1\tInfinity\t3.0517578125000000e-5\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
index 3f28908ad5f..06fdfd037df 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
@@ -326,3 +326,9 @@
   [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[31080\]\t-2.4090957641601563e+0\t5.6332010030746460e-1\t2.9724158644676208e+0\t5.2766018163478501e+0\t9.0957000000000003e-5\n\t[31081\]\t4.5659909161559839e-41\t6.1397600173950195e-1\t6.1397600173950195e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 2.9724158644676208e+0 at index of 31080.\n\tMax RelError of 5.2766018163478501e+0 at index of 31080.\n]
     expected: FAIL
 
+  [X SNR (45.01863889546189 dB) is not greater than or equal to 85.58. Got 45.01863889546189.]
+    expected: FAIL
+
+  [X Stitched sine-wave buffers at sample rate 44100 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.000090957,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[31080\]\t-8.5582718212587339e-15\t5.6332010030746460e-1\t5.6332010030747315e-1\t1.0000000000000151e+0\t9.0957000000000003e-5\n\t[31081\]\t4.5672520847738763e-41\t6.1397600173950195e-1\t6.1397600173950195e-1\t1.0000000000000000e+0\t9.0957000000000003e-5\n\tMax AbsError of 6.1397600173950195e-1 at index of 31081.\n\tMax RelError of 1.0000000000000151e+0 at index of 31080.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/web-platform-tests/common/rendering-utils.js b/tests/wpt/web-platform-tests/common/rendering-utils.js
new file mode 100644
index 00000000000..46283bd5d07
--- /dev/null
+++ b/tests/wpt/web-platform-tests/common/rendering-utils.js
@@ -0,0 +1,19 @@
+"use strict";
+
+/**
+ * Waits until we have at least one frame rendered, regardless of the engine.
+ *
+ * @returns {Promise}
+ */
+function waitForAtLeastOneFrame() {
+  return new Promise(resolve => {
+    // Different web engines work slightly different on this area but waiting
+    // for two requestAnimationFrames() to happen, one after another, should be
+    // sufficient to ensure at least one frame has been generated anywhere.
+    window.requestAnimationFrame(() => {
+      window.requestAnimationFrame(() => {
+        resolve();
+      });
+    });
+  });
+}
diff --git a/tests/wpt/web-platform-tests/content-index/content-index.https.window.js b/tests/wpt/web-platform-tests/content-index/content-index.https.window.js
new file mode 100644
index 00000000000..082ebc3b9ec
--- /dev/null
+++ b/tests/wpt/web-platform-tests/content-index/content-index.https.window.js
@@ -0,0 +1,88 @@
+// META: script=/service-workers/service-worker/resources/test-helpers.sub.js
+// META: script=resources.js
+'use strict';
+
+contentIndexTest(async (t, index) => {
+  // Exposure of the interface and method.
+  assert_own_property(window, 'ContentIndex');
+  assert_own_property(ContentIndex.prototype, 'add');
+
+  assert_idl_attribute(index, 'add');
+  assert_idl_attribute(index, 'delete');
+  assert_idl_attribute(index, 'getAll');
+
+}, 'The Content Index API is exposed');
+
+contentIndexTest(async (t, index) => {
+  await expectTypeError(
+      index.add(createDescription({category: 'fake-category'})));
+
+  await expectTypeError(
+      index.add(createDescription({iconUrl: 'file://some-local-file.png'})));
+  await expectTypeError(index.add(createDescription({iconUrl: '/non-existent-icon.png'})));
+  await expectTypeError(index.add(createDescription({iconUrl: '/images/broken.png'})));
+
+  await expectTypeError(index.add(createDescription({launchUrl: 'https://other-domain.com/'})));
+  await expectTypeError(index.add(createDescription({launchUrl: '/different-scope'})));
+
+  await index.add(createDescription({}));
+
+}, 'index.add parameters are validated.');
+
+contentIndexTest(async (t, index) => {
+  const description = createDescription({});
+
+  // Initially there are no descriptions.
+  assert_array_equals(await index.getAll(), []);
+
+  await index.add(description);
+
+  const descriptions = await index.getAll();
+  assert_equals(descriptions.length, 1);
+
+  assert_object_equals(descriptions[0], description);
+
+}, 'index.getAll returns the same objects provided.');
+
+contentIndexTest(async (t, index) => {
+  const description1 = createDescription({title: 'title1'});
+  const description2 = createDescription({title: 'title2'});
+
+  await index.add(description1);
+  await index.add(description2);
+
+  // There should be one description.
+  const descriptions = await index.getAll();
+  assert_equals(descriptions.length, 1);
+
+  assert_object_equals(descriptions[0], description2);
+
+}, 'index.add with same ID overwrites existing entry.');
+
+contentIndexTest(async (t, index) => {
+  const description1 = createDescription({id: 'id1'});
+  const description2 = createDescription({id: 'id2'});
+
+  await index.add(description1);
+  await index.add(description2);
+
+  // There should be two descriptions.
+  assert_equals((await index.getAll()).length, 2);
+
+  await index.delete('id1');
+
+  // There should be one description.
+  const descriptions = await index.getAll();
+  assert_equals(descriptions.length, 1);
+
+  assert_object_equals(descriptions[0], description2);
+
+}, 'index.delete removes entry.');
+
+contentIndexTest(async (t, index) => {
+  const descriptions = await index.getAll();
+  assert_equals(descriptions.length, 0);
+
+  await index.delete('id');
+
+}, 'index.delete works on invalid ID.');
diff --git a/tests/wpt/web-platform-tests/content-index/resources.js b/tests/wpt/web-platform-tests/content-index/resources.js
new file mode 100644
index 00000000000..1a758abe27e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/content-index/resources.js
@@ -0,0 +1,40 @@
+'use strict';
+
+const swUrl = 'resources/sw.js';
+const scope = 'resources/';
+
+async function expectTypeError(promise) {
+  try {
+    await promise;
+    assert_unreached('Promise should have rejected');
+  } catch (e) {
+    assert_equals(e.name, 'TypeError');
+  }
+}
+
+function createDescription({id = 'id', title = 'title', description = 'description',
+                            category = 'homepage', iconUrl = '/images/green-256x256.png',
+                            launchUrl = scope, includeIcons = true}) {
+  return {id, title, description, category, icons: includeIcons ? [{src: iconUrl}] : [], launchUrl};
+}
+
+// Creates a Promise test for |func| given the |description|. The |func| will be
+// executed with the `index` object of an activated Service Worker Registration.
+function contentIndexTest(func, description) {
+  promise_test(async t => {
+    const registration = await service_worker_unregister_and_register(t, swUrl, scope);
+    await wait_for_state(t, registration.installing, 'activated');
+    return func(t, registration.index);
+  }, description);
+}
+
+async function waitForMessageFromServiceWorker() {
+  return await new Promise(resolve => {
+    const listener = event => {
+      navigator.serviceWorker.removeEventListener('message', listener);
+      resolve(event.data);
+    };
+
+    navigator.serviceWorker.addEventListener('message', listener);
+  });
+}
diff --git a/tests/wpt/web-platform-tests/content-index/resources/sw.js b/tests/wpt/web-platform-tests/content-index/resources/sw.js
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/wpt/web-platform-tests/cookie-store/cookieStore_get_arguments.tentative.https.any.js b/tests/wpt/web-platform-tests/cookie-store/cookieStore_get_arguments.tentative.https.any.js
index 79fc0d37488..34f7dbcd948 100644
--- a/tests/wpt/web-platform-tests/cookie-store/cookieStore_get_arguments.tentative.https.any.js
+++ b/tests/wpt/web-platform-tests/cookie-store/cookieStore_get_arguments.tentative.https.any.js
@@ -139,11 +139,6 @@ promise_test(async testCase => {
 }, 'cookieStore.get with relative url in options');
 
 promise_test(async testCase => {
-  await cookieStore.set('cookie-name', 'cookie-value');
-  testCase.add_cleanup(async () => {
-    await cookieStore.delete('cookie-name');
-  });
-
   const invalid_url =
       `${self.location.protocol}//${self.location.host}/different/path`;
   await promise_rejects_js(testCase, TypeError, cookieStore.get(
@@ -151,11 +146,6 @@ promise_test(async testCase => {
 }, 'cookieStore.get with invalid url path in options');
 
 promise_test(async testCase => {
-  await cookieStore.set('cookie-name', 'cookie-value');
-  testCase.add_cleanup(async () => {
-    await cookieStore.delete('cookie-name');
-  });
-
   const invalid_url =
       `${self.location.protocol}//www.example.com${self.location.pathname}`;
   await promise_rejects_js(testCase, TypeError, cookieStore.get(
diff --git a/tests/wpt/web-platform-tests/cookie-store/cookieStore_opaque_origin.tentative.https.html b/tests/wpt/web-platform-tests/cookie-store/cookieStore_opaque_origin.tentative.https.html
new file mode 100644
index 00000000000..bbf0dbd9864
--- /dev/null
+++ b/tests/wpt/web-platform-tests/cookie-store/cookieStore_opaque_origin.tentative.https.html
@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Cookie Store API: Opaque origins for cookieStore</title>
+<link rel=help href="https://wicg.github.io/cookie-store/">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+
+const apiCalls = {
+  'get': 'cookieStore.get()',
+  'getAll': 'cookieStore.getAll()',
+  'set': 'cookieStore.set("cookie-name", "cookie-value")',
+  'delete': 'cookieStore.delete("cookie-name")'
+};
+
+const script = `
+<script>
+  "use strict";
+  window.onmessage = async () => {
+    try {
+      await %s;
+      window.parent.postMessage({result: "no exception"}, "*");
+    } catch (ex) {
+      window.parent.postMessage({result: ex.name}, "*");
+    };
+  };
+<\/script>
+`;
+
+function load_iframe(apiCall, sandbox) {
+  return new Promise(resolve => {
+    const iframe = document.createElement('iframe');
+    iframe.onload = () => { resolve(iframe); };
+    if (sandbox)
+      iframe.sandbox = sandbox;
+    iframe.srcdoc = script.replace("%s", apiCalls[apiCall]);
+    iframe.style.display = 'none';
+    document.documentElement.appendChild(iframe);
+  });
+}
+
+function wait_for_message(iframe) {
+  return new Promise(resolve => {
+    self.addEventListener('message', function listener(e) {
+      if (e.source === iframe.contentWindow) {
+        resolve(e.data);
+        self.removeEventListener('message', listener);
+      }
+    });
+  });
+}
+
+promise_test(async t => {
+  for (apiCall in apiCalls) {
+    const iframe = await load_iframe(apiCall);
+    iframe.contentWindow.postMessage({}, '*');
+    const message = await wait_for_message(iframe);
+    assert_equals(message.result, 'no exception',
+      'cookieStore ${apiCall} should not throw');
+  }
+}, 'cookieStore in non-sandboxed iframe should not throw');
+
+promise_test(async t => {
+  for (apiCall in apiCalls) {
+    const iframe = await load_iframe(apiCall, 'allow-scripts');
+    iframe.contentWindow.postMessage({}, '*');
+    const message = await wait_for_message(iframe);
+    assert_equals(message.result, 'SecurityError',
+      'cookieStore ${apiCall} should throw SecurityError');
+  }
+}, 'cookieStore in sandboxed iframe should throw SecurityError');
+
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-contain/contain-size-063.html b/tests/wpt/web-platform-tests/css/css-contain/contain-size-063.html
new file mode 100644
index 00000000000..31a6015cac3
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-contain/contain-size-063.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>CSS Containment Test: 'contain: size' affects intrinsic size</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel="help" href="https://www.w3.org/TR/css-contain-1/#containment-size">
+<link rel="match" href="reference/contain-size-063-ref.html">
+<meta name="flags" content="">
+<meta name="asserts" content="the intrinsic size of a size-contained element is treated as 0 in various scenarios involving intrinsic sizing.">
+
+<style>
+.red {
+    background: red;
+}
+.abs {
+    position: absolute;
+}
+.float {
+    float: left;
+}
+.zero {
+    width: 0;
+}
+.contained {
+    contain: size;
+    color: transparent;
+}
+.grid {
+    display: grid;
+    grid: max-content auto / min-content auto;
+}
+table {
+    border-collapse: collapse;
+}
+td {
+    padding: 0;
+}
+</style>
+
+<p>Test passes if there is no red below.
+
+<!-- max content sized-->
+<div class="red abs"><div class="contained">Arbitrary content content<br>that takes up size.<br>Block Layout</div></div>
+
+<!-- max content sized-->
+<div class="red float"><div class="contained">Arbitrary content content<br>that takes up size.<br>Float</div></div>
+
+<!-- min content sized-->
+<div class=zero><div class="red float"><div class="contained">Arbitrary content content<br>that takes up size.<br>Float in narrow wrapper</div></div></div>
+
+<div class="grid red">
+    <div class="red"></div>
+    <div class="contained">Arbitrary content content<br>that takes up size.<br>Grid item giving the first row it's height</div>
+    <div class="contained">Arbitrary content content<br>that takes up size.<br>Grid item giving the first column its width</div>
+</div>
+
+<table class=red>
+    <tr>
+        <td class=red>
+        <td><div class="contained">Arbitrary content content<br>that takes up size.<br>content of a table cell giving the fist row it's height</div>
+    <tr>
+        <td><div class="contained">Arbitrary content content<br>that takes up size.<br>content of a table cell giving the first column it's width</div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-contain/reference/contain-size-063-ref.html b/tests/wpt/web-platform-tests/css/css-contain/reference/contain-size-063-ref.html
new file mode 100644
index 00000000000..9544ebcac23
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-contain/reference/contain-size-063-ref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>Test reference</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
+
+<p>Test passes if there is no red below.
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/abspos-descendent-001.html b/tests/wpt/web-platform-tests/css/css-flexbox/abspos-descendent-001.html
new file mode 100644
index 00000000000..1aebb0f319f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/abspos-descendent-001.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>CSS Flexbox: removing abspos descendents</title>
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-containers">
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#abspos-items">
+<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=167566">
+<meta name="assert" content="This test ensures that flex item's padding doesn't disappear when an abspos descendent is removed.">
+<link href="support/flexbox.css" rel="stylesheet">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+<script>
+window.onload = function() {
+    document.body.offsetHeight;
+
+    document.getElementById('to-hide').style.display = "none";
+    checkLayout(".flexbox");
+};
+</script>
+</head>
+<body>
+<div id=log></div>
+<div class="flexbox" style="height: 100px;" data-expected-height="100">
+    <div style="width: 100%; overflow: auto; padding-bottom: 100px; background-color: red;" data-expected-height="100">
+        <div style="position: relative; height: 100px; background-color: green;" data-expected-height="100">
+            <div id="to-hide" style="position: absolute;" data-expected-height="0"></div>
+        </div>
+    </div>
+</div>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/flex-minimum-height-flex-items-022.html b/tests/wpt/web-platform-tests/css/css-flexbox/flex-minimum-height-flex-items-022.html
new file mode 100644
index 00000000000..943ac525fb5
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/flex-minimum-height-flex-items-022.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<title>Minimum height of a replaced element with borders</title>
+<link rel="author" title="Google LLC" href="https://www.google.com/" />
+<link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#min-size-auto" title="4.5. Implied Minimum Size of Flex Items" />
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht" />
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+
+<div style="height: 100px; overflow: hidden;">
+  <div style="display: flex; flex-direction: column; height: 0; width: 100px;">
+    <img src="support/1x1-green.png" style="border-bottom: 99px solid green;">
+    <div style="background-color: red; min-height: 100px;"></div>
+  </div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/flexbox-with-multi-column-property.html b/tests/wpt/web-platform-tests/css/css-flexbox/flexbox-with-multi-column-property.html
index 5b11b0f9fd2..56b56ca0935 100644
--- a/tests/wpt/web-platform-tests/css/css-flexbox/flexbox-with-multi-column-property.html
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/flexbox-with-multi-column-property.html
@@ -10,6 +10,7 @@
     column-count: 2;
     column-gap: 100px;
     width: 20em;
+    font-kerning: none;
 }
 </style>
 <div class="flexbox">
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html b/tests/wpt/web-platform-tests/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html
new file mode 100644
index 00000000000..032cd47df5d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/orthogonal-writing-modes-and-intrinsic-sizing.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+<title>CSS Flexbox: main size on orthogonal flex item.</title>
+<link rel="stylesheet" href="support/flexbox.css" >
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-base-size">
+<link rel="issue" href="https://codereview.chromium.org/1052363002">
+<meta name="assert" content="This test ensure the correct main sizes are used when flex item is orthogonal to the flex container."/>
+<style>
+.flexbox {
+  background-color: gray;
+}
+
+.vertical {
+  writing-mode: vertical-lr;
+  width: min-content;
+  background-color: blue;
+}
+</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>
+
+<div class="flexbox" data-expected-height="20">
+  <div class="vertical" data-expected-width="50" data-expected-height="20">
+    <div style="width: 50px; height: 20px; background-color: blue;" data-expected-width="50" data-expected-height="20"></div>
+  </div>
+</div>
+
+<div class="flexbox column" data-expected-height="20">
+  <div class="vertical" data-expected-width="50" data-expected-height="20">
+    <div style="width: 50px; height: 20px; background-color: blue;" data-expected-width="50" data-expected-height="20"></div>
+  </div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/percentage-size.html b/tests/wpt/web-platform-tests/css/css-flexbox/percentage-size.html
new file mode 100644
index 00000000000..44c298672f2
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/percentage-size.html
@@ -0,0 +1,108 @@
+<!DOCTYPE html>
+<title>CSS Flexbox: Percentage size in flexbox children</title>
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#flex-containers">
+<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#percentage-sizing">
+<link rel="help" href="https://bugs.webkit.org/show_bug.cgi?id=81809">
+<meta name="assert" content="This test checks that percentage height/width values are correctly resolved in flexbox children.">
+<style>
+.flexbox {
+    display: flex;
+}
+.column, .column .fixed {
+    height: 50px;
+}
+.row, .row .fixed {
+    width: 50px;
+}
+.container > div {
+    outline: 2px solid blue;
+}
+.row > div > div {
+    height: 20px;
+}
+.flexbox > div {
+    flex: 0 0 auto;
+}
+.column > .flexbox {
+    flex-direction: column;
+}
+.container > div > :nth-child(1) {
+    background-color: orange;
+}
+.container > div > :nth-child(2) {
+    background-color: yellow;
+}
+.container > div > :nth-child(3) {
+    background-color: salmon;
+}
+.container > div > :nth-child(4) {
+    background-color: purple;
+}
+</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>
+
+<div class="container row">
+    <div class="flexbox">
+        <div style='width: 10px; min-width: 50%;' data-expected-width=25></div>
+        <div style='width: 50%;' data-expected-width=25></div>
+        <div style='width: 10px; max-width: 50%;' data-expected-width=10></div>
+        <div style='min-width: 10px; width: 100px; max-width: 50%;' data-expected-width=25></div>
+    </div>
+</div>
+
+<div class="container row" style='width: 100px'>
+    <div class="flexbox fixed">
+        <div style='width: 10px; min-width: 50%;' data-expected-width=25></div>
+        <div style='width: 50%;' data-expected-width=25></div>
+        <div style='width: 10px; max-width: 50%;' data-expected-width=10></div>
+        <div style='min-width: 10px; width: 100px; max-width: 50%;' data-expected-width=25></div>
+    </div>
+</div>
+
+<div class="container column" style='margin-bottom: 100px'>
+    <div class="flexbox" style="height: auto">
+        <div style='height: 10px; min-height: 50%;' data-expected-height=10></div>
+        <div style='height: 50%;' data-expected-height=0></div>
+        <div style='height: 10px; max-height: 50%;' data-expected-height=10></div>
+        <div style='min-height: 10px; height: 100px; max-height: 50%;' data-expected-height=100></div>
+    </div>
+</div>
+
+<div class="container column">
+    <div class="flexbox fixed">
+        <div style='height: 10px; min-height: 50%;' data-expected-height=25></div>
+        <div style='height: 50%;' data-expected-height=25></div>
+        <div style='height: 10px; max-height: 50%;' data-expected-height=10></div>
+        <div style='min-height: 10px; height: 100px; max-height: 50%;' data-expected-height=25></div>
+    </div>
+</div>
+
+<div class="container row">
+    <div class="flexbox">
+        <div style="flex: 0 0 50%" data-expected-width=25></div>
+    </div>
+</div>
+
+<div class="container column">
+    <div class="flexbox">
+        <div style="flex: 0 0 50%" data-expected-height=0></div>
+    </div>
+</div>
+
+<div class="container row">
+    <div class="flexbox fixed">
+        <div style="flex: 0 0 50%" data-expected-width=25></div>
+    </div>
+</div>
+
+<div class="container column">
+    <div class="flexbox fixed">
+        <div style="flex: 0 0 50%" data-expected-height=25></div>
+    </div>
+</div>
+
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/position-relative-percentage-top-001.html b/tests/wpt/web-platform-tests/css/css-flexbox/position-relative-percentage-top-001.html
new file mode 100644
index 00000000000..3ec47c1d42d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/position-relative-percentage-top-001.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<title>CSS Flexbox: Relative position with a percentage top</title>
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#valdef-align-items-stretch">
+<meta name="assert" content="This test ensures that a flexbox with 'flex-flow: row wrap' properly centers a grandchild with 'position: relative' and 'top: 50%'.">
+<style>
+html, body {
+  margin: 0;
+}
+
+.border {
+  border:1px solid #000;
+}
+.width-50 {
+  width: 50%;
+}
+.flex {
+  display: flex;
+  flex-flow: row wrap;
+}
+.tall {
+  height: 300px;
+}
+.top-50 {
+  position: relative;
+  top: 50%;
+}
+</style>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/check-layout-th.js"></script>
+<body onload="checkLayout('.border')">
+<div class="border">
+  <div class="flex">
+    <div class="width-50">
+      <label class="top-50" data-offset-y="151">This should be in the center of the container</label>
+    </div>
+    <div class="width-50">
+      <div class="tall">
+        This is tall
+      </div>
+    </div>
+  </div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-pseudo/active-selection-063.html b/tests/wpt/web-platform-tests/css/css-pseudo/active-selection-063.html
new file mode 100644
index 00000000000..1d9a1c1ecd8
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-pseudo/active-selection-063.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Pseudo-Elements Test: active selection and consecutive preserved &amp;Tab;</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-pseudo-4/#highlight-selectors">
+  <link rel="help" href="https://www.w3.org/TR/css-text-3/#tab-size-property">
+  <link rel="match" href="reference/ref-filled-green-100px-square.xht">
+  <link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
+
+  <meta content="" name="flags">
+  <meta name="assert" content="In this test, tab characters are preserved and converted into 4 consecutive blank spaces. The background of such blank spaces can be painted. The lines are broken after each tab character since 'white-space: pre' preserves line breaks.">
+
+  <style>
+  div
+    {
+      background-color: red;
+      color: red;
+      float: left; /* or display: inline-block or position: absolute or width: 4em */
+      font-family: Ahem;
+      font-size: 25px;
+      line-height: 1;
+      /* -moz-tab-size: 4; */
+      /*
+      Implement 'tab-size' (dropping the -moz- prefix)
+      https://bugzilla.mozilla.org/show_bug.cgi?id=737785
+      */
+      tab-size: 4;
+      white-space: pre;
+    }
+
+  div::selection
+    {
+      background-color: green;
+    }
+  </style>
+
+  <script>
+  function startTest()
+  {
+  var targetRange = document.createRange();
+  /* We first create an empty range */
+  targetRange.selectNodeContents(document.getElementById("test"));
+  /* Then we set the range boundaries to the children of div#test */
+  window.getSelection().addRange(targetRange);
+  /* Finally, we now select such range of content */
+  }
+  </script>
+
+  <body onload="startTest();">
+
+  <p>Test passes if there is a filled green square and <strong>no red</strong>.
+
+  <div id="test">&Tab;
+&Tab;
+&Tab;
+&Tab;</div>
diff --git a/tests/wpt/web-platform-tests/css/css-pseudo/reference/ref-filled-green-100px-square.xht b/tests/wpt/web-platform-tests/css/css-pseudo/reference/ref-filled-green-100px-square.xht
new file mode 100644
index 00000000000..05a13794482
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-pseudo/reference/ref-filled-green-100px-square.xht
@@ -0,0 +1,19 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+ <head>
+  <title>CSS Reftest Reference</title>
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
+  <style type="text/css"><![CDATA[
+  div
+  {
+  background-color: green;
+  height: 100px;
+  width: 100px;
+  }
+  ]]></style>
+ </head>
+ <body>
+  <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+  <div></div>
+ </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/background-image-blur-repaint.html b/tests/wpt/web-platform-tests/css/filter-effects/background-image-blur-repaint.html
index 7b3df263081..4a3c00c7ad3 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/background-image-blur-repaint.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/background-image-blur-repaint.html
@@ -10,6 +10,7 @@
 <meta name="assert" content="An element with background-image and a filter should be rendered correctly after other elements on the page change size. You should see a 50x50 green box over a blurred background."/>
 
 <script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
 <script>
 function runTest() {
   function shrinkBox() {
@@ -18,13 +19,9 @@ function runTest() {
     box.style.height = "50px";
   }
 
-  // Wait for two requestAnimationFrame() calls to make sure that at least one
-  // frame has been rendered before shrinking the box and taking the screenshot.
-  requestAnimationFrame(function() {
-    requestAnimationFrame(function() {
-      shrinkBox();
-      takeScreenshot();
-    });
+  waitForAtLeastOneFrame().then(function() {
+    shrinkBox();
+    takeScreenshot();
   });
 }
 </script>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-delete.html b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-delete.html
new file mode 100644
index 00000000000..314c9a7d123
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-delete.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>CSS Filters: reference to deleted SVG filter</title>
+<link rel="author" title="Stephen White" href="mailto:senorblanco@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
+<link rel="help" href="https://bugs.webkit.org/show_bug.cgi?id=90405">
+<link rel="match" href="reference/effect-reference-delete-ref.html">
+<meta name="assert" content="Check that a CSS filter no longer affects its target element after having deleted the SVG element referenced from the CSS filter."/>
+
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<svg width="0" height="0">
+  <defs>
+    <filter id="MyFilter">
+      <feColorMatrix type="hueRotate" values="180"/>
+    </filter>
+  </defs>
+</svg>
+<img style="filter: url(#MyFilter);" src="support/color-palette.png">
+<script>
+waitForAtLeastOneFrame().then(function() {
+  document.querySelector('svg').remove();
+  takeScreenshot();
+});
+</script>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-displacement-negative-scale-001.html b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-displacement-negative-scale-001.html
new file mode 100644
index 00000000000..282ea100508
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-displacement-negative-scale-001.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<title>SVG Filters: feDisplacementMap filter with negative scale</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#feDisplacementMapElement">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=641854">
+<link rel="match" href="reference/effect-reference-displacement-negative-scale-001-ref.html">
+<meta name="assert" content="feDisplacementMap with a negative scale applies the displacement in the opposite direction.">
+
+<div style="position: relative">
+  <div style="position: absolute; top: 20px; left: 20px; width: 100px; height: 100px; background: green; filter: url(#displacementFilter);"></div>
+</div>
+<svg width="0" height="0">
+  <filter id="displacementFilter" x="-0.2" y="-0.2" color-interpolation-filters="sRGB">
+    <feFlood flood-color="black"/>
+    <feDisplacementMap in="SourceGraphic" scale="-40" xChannelSelector="R" yChannelSelector="R"/>
+  </filter>
+</svg>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-merge-no-inputs.tentative.html b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-merge-no-inputs.tentative.html
new file mode 100644
index 00000000000..4fb67db643d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-merge-no-inputs.tentative.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<title>CSS Filters: feMerge with no input feMergeNode</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#feMergeElement">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#feCompositeElement">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=533457">
+<link rel="match" href="reference/effect-reference-merge-no-inputs.tentative-ref.html">
+<meta name="assert" content="Check that the result of an feMerge with no feMergeNode children is transparent black."/>
+
+<style>
+#target {
+  width: 100px;
+  height: 100px;
+  background-color: blue;
+  filter: url(#emptyMerge);
+}
+</style>
+<div id="target"></div>
+<svg height="0">
+  <filter id="emptyMerge">
+    <feColorMatrix values="0 0 0 0 0, 0 0 1 0 0, 0 0 0 0 0, 0 0 0 1 0" result="lime"/>
+    <feColorMatrix values="0 1 0 0 0, 0 0 0 0 0, 0 0 0 0 0, 0 0 0 1 0" result="red"/>
+    <feMerge/>
+    <feComposite in2="lime"/>
+  </filter>
+</svg>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-obb-dimensions.html b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-obb-dimensions.html
new file mode 100644
index 00000000000..2bb424d90cd
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-obb-dimensions.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Filters: objectBoundingBox type of primitiveUnits in SVG filters</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#InterfaceSVGFilterElement">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#attr-valuedef-primitiveunits-objectboundingbox">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=532938">
+<link rel="match" href="reference/effect-reference-obb-dimensions-ref.html">
+<meta name="assert" content="Check that primitiveUnits of type objectBoundingBox get properly applied in SVG filter primitives."/>
+
+<style>
+body {
+  margin: 0;
+  padding: 0;
+}
+#target {
+  position: absolute;
+  width: 100px;
+  height: 100px;
+  background-color: green;
+  filter: url('#bboxOffset');
+}
+</style>
+<div id="target"></div>
+<svg height="0">
+  <filter id="bboxOffset" primitiveUnits="objectBoundingBox" x="0" y="0" width="1.25" height="1.25">
+    <feOffset dx="0.2" dy="0.2"/>
+  </filter>
+</svg>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-on-span.html b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-on-span.html
new file mode 100644
index 00000000000..66bd8fa886a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-on-span.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<title>CSS Filters: filters on <span> elements</title>
+<link rel="author" title="Stephen White" href="mailto:senorblanco@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=513408">
+<link rel="match" href="reference/effect-reference-on-span-ref.html">
+<meta name="assert" content="Check that a CSS filter to a <span> element works as expected."/>
+
+<body>
+<svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
+  <defs>
+    <filter id="colormatrix" color-interpolation-filters="sRGB">
+      <feColorMatrix values="0 0 0 0 0, 0 0 0 0 0, 1 0 0 0 0, 0 0 0 1 0"/>
+    </filter>
+  </defs>
+</svg><span style="background-color: red; filter: url(#colormatrix);">This text's background should be blue.</span>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-rename-001.html b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-rename-001.html
new file mode 100644
index 00000000000..6c8374536f4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-rename-001.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<title>CSS Filters: reference to renamed SVG filter</title>
+<link rel="author" title="Stephen White" href="mailto:senorblanco@chromium.org">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
+<link rel="help" href="https://bugs.webkit.org/show_bug.cgi?id=90405">
+<link rel="match" href="reference/effect-reference-rename-001-ref.html">
+<meta name="assert" content="Check that a SVG filter, initially named differently than what an element expects, gets applied to such element once renamed with the expected value."/>
+
+<body>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="0" height="0">
+  <defs>
+    <filter id="NotMyFilter">
+      <feColorMatrix type="hueRotate" values="180"/>
+    </filter>
+  </defs>
+</svg>
+<img style="filter: url(#MyFilter);" src="support/color-palette.png">
+<script>
+document.getElementById("NotMyFilter").id = "MyFilter";
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-rename-002.html b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-rename-002.html
new file mode 100644
index 00000000000..86528819bc7
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/effect-reference-rename-002.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>CSS Filters: reference to renamed SVG filter</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=453019">
+<link rel="match" href="reference/effect-reference-rename-002-ref.html">
+<meta name="assert" content="Check that a SVG filter, initially named differently than what an element expects, gets applied to such element once renamed, after rendering the first frame."/>
+
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/rendering-utils.js"></script>
+
+<body>
+<svg height="0">
+  <filter id="NotMyFilter">
+    <feColorMatrix type="hueRotate" values="90"/>
+  </filter>
+</svg>
+<div style="width: 100px; height: 100px; background-color: red; filter: url(#MyFilter);"></div>
+<script>
+waitForAtLeastOneFrame().then(function() {
+  document.getElementById("NotMyFilter").id = "MyFilter";
+  takeScreenshot();
+});
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/filter-region-negative-positioned-child-001.html b/tests/wpt/web-platform-tests/css/filter-effects/filter-region-negative-positioned-child-001.html
new file mode 100644
index 00000000000..8f302ab52ab
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/filter-region-negative-positioned-child-001.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<title>SVG Filters: CSS reference filters with negative positioned children</title>
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#ColorInterpolationFiltersProperty">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#feColorMatrixElement">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=638091">
+<link rel="match" href="reference/filter-region-negative-positioned-child-001-ref.html">
+<meta name="assert" content="CSS reference filters with negative positioned children"/>
+<svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
+  <defs>
+    <filter id="f1" color-interpolation-filters="sRGB">
+      <feColorMatrix type="matrix" values="-1 0 0 0 1  0 -1 0 0 1  0 0 -1 0 1  0 0 0 1 0"/>
+    </filter>
+  </defs>
+</svg>
+<style>
+.box {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+.green {
+  background-color: green;
+}
+.blue {
+  background-color: blue;
+}
+.above {
+  top: -100px;
+}
+.parent {
+  filter: url(#f1);
+  background-color: white;
+  position: relative;
+  top: 100px;
+}
+</style>
+<div class="parent">
+<div class="green box"></div>
+<div class="blue box above"></div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/filter-region-transformed-child-001.html b/tests/wpt/web-platform-tests/css/filter-effects/filter-region-transformed-child-001.html
new file mode 100644
index 00000000000..cd097faf706
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/filter-region-transformed-child-001.html
@@ -0,0 +1,30 @@
+<title>CSS Filter: Scale a transformed child element"></title>
+<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#feComponentTransferElement">
+<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=333014">
+<link rel="match" href="reference/filter-region-transformed-child-001-ref.html">
+<meta name="assert" content="This test ensures that the feComponentTransfer filter scales a child with CSS scale transform.">
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="0" height="0">
+  <defs>
+    <filter id="filter" x="25%" y="0%" width="50%" height="100%">
+      <feComponentTransfer>
+        <feFuncR type="linear" intercept="0" slope="1"/>
+        <feFuncG type="linear" intercept="0" slope="0"/>
+        <feFuncB type="linear" intercept="0" slope="0"/>
+        <feFuncA type="linear" intercept="0" slope="1"/>
+      </feComponentTransfer>
+    </filter>
+  </defs>
+</svg>
+<style>
+#parent {
+    display: inline-block;
+    filter: url(#filter);
+}
+#child {
+    background-color: gray;
+    width: 50px;
+    height: 50px;
+    transform: translate(25px, 25px) scale(2);
+}
+</style>
+<div id="parent"><div id="child"></div></div>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference-filter-update-on-attribute-change-001.html b/tests/wpt/web-platform-tests/css/filter-effects/reference-filter-update-on-attribute-change-001.html
new file mode 100644
index 00000000000..cc5ac7c65d7
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference-filter-update-on-attribute-change-001.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<title>SVG Filters: Invalidation of SVG filter attributes on HTML</title>
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#feColorMatrixElement">
+<link rel="help" href="https://bugs.webkit.org/show_bug.cgi?id=105635">
+<link rel="match" href="reference/reference-filter-update-on-attribute-change-001-ref.html">
+<meta name="assert" content="Dynamically adding an attribute of a filter primitive"/>
+<head>
+  <script>
+    function run() {
+      document.getElementById('color').setAttribute('values', '90');
+    }
+ </script>
+</head>
+<body onload="run()">
+   <svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
+    <defs>
+      <filter id="MyFilter">
+        <fecolormatrix id="color" type="hueRotate"></fecolormatrix>
+      </filter>
+    </defs>
+  </svg>
+  <div style="filter: url(#MyFilter); width:100px; height:100px; background-color:red;"></div>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-delete-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-delete-ref.html
new file mode 100644
index 00000000000..918715265fa
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-delete-ref.html
@@ -0,0 +1,5 @@
+<html>
+  <body>
+    <img src="../support/color-palette.png">
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-displacement-negative-scale-001-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-displacement-negative-scale-001-ref.html
new file mode 100644
index 00000000000..f718ea6abfb
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-displacement-negative-scale-001-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: green"></div>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-merge-no-inputs.tentative-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-merge-no-inputs.tentative-ref.html
new file mode 100644
index 00000000000..5743e0c3de9
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-merge-no-inputs.tentative-ref.html
@@ -0,0 +1,2 @@
+<!DOCTYPE html>
+<div style="width: 100px; height: 100px; background-color: lime"></div>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-obb-dimensions-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-obb-dimensions-ref.html
new file mode 100644
index 00000000000..f460c439aa8
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-obb-dimensions-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<style>
+body {
+    margin: 0;
+    padding: 0;
+}
+#target {
+    position: absolute;
+    left: 20px;
+    top: 20px;
+    width: 100px;
+    height: 100px;
+    background-color: green;
+}
+</style>
+<div id="target"></div>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-on-span-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-on-span-ref.html
new file mode 100644
index 00000000000..76a79538317
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-on-span-ref.html
@@ -0,0 +1,5 @@
+<html>
+<body>
+<span style="background-color: blue;">This text's background should be blue.</span>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-rename-001-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-rename-001-ref.html
new file mode 100644
index 00000000000..fe3beae2d49
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-rename-001-ref.html
@@ -0,0 +1,12 @@
+<html>
+<body>
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="0" height="0">
+  <defs>
+    <filter id="MyFilter">
+      <feColorMatrix type="hueRotate" values="180"/>
+    </filter>
+  </defs>
+</svg>
+<img style="filter: url(#MyFilter);" src="../support/color-palette.png">
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-rename-002-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-rename-002-ref.html
new file mode 100644
index 00000000000..d8719aa43a4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/effect-reference-rename-002-ref.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<svg height="0">
+  <filter id="MyFilter">
+    <feColorMatrix type="hueRotate" values="90"/>
+  </filter>
+</svg>
+<div style="width: 100px; height: 100px; background-color: red; filter: url(#MyFilter);"></div>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/filter-region-negative-positioned-child-001-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/filter-region-negative-positioned-child-001-ref.html
new file mode 100644
index 00000000000..c9da47b1b43
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/filter-region-negative-positioned-child-001-ref.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
+  <defs>
+    <filter id="f1" color-interpolation-filters="sRGB">
+      <feColorMatrix type="matrix" values="-1 0 0 0 1  0 -1 0 0 1  0 0 -1 0 1  0 0 0 1 0"/>
+    </filter>
+  </defs>
+</svg>
+<style>
+.box {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+.green {
+  background-color: green;
+}
+.blue {
+  background-color: blue;
+}
+.below {
+  top: 100px;
+}
+.parent {
+  filter: url(#f1);
+  background-color: white;
+  position: relative;
+}
+</style>
+<div class="parent">
+<div class="blue box"></div>
+<div class="green box below"></div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/filter-region-transformed-child-001-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/filter-region-transformed-child-001-ref.html
new file mode 100644
index 00000000000..bcf64941193
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/filter-region-transformed-child-001-ref.html
@@ -0,0 +1,23 @@
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="0" height="0">
+  <defs>
+    <filter id="filter" x="25%" y="0%" width="50%" height="100%">
+      <feComponentTransfer>
+        <feFuncR type="linear" intercept="0" slope="1"/>
+        <feFuncG type="linear" intercept="0" slope="0"/>
+        <feFuncB type="linear" intercept="0" slope="0"/>
+        <feFuncA type="linear" intercept="0" slope="1"/>
+      </feComponentTransfer>
+    </filter>
+  </defs>
+</svg>
+<style>
+div {
+    display: inline-block;
+    filter: url(#filter);
+    background-color: gray;
+    width: 50px;
+    height: 50px;
+    transform: translate(25px, 25px) scale(2);
+}
+</style>
+<div></div>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/reference-filter-update-on-attribute-change-001-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/reference-filter-update-on-attribute-change-001-ref.html
new file mode 100644
index 00000000000..91326ef585e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/reference-filter-update-on-attribute-change-001-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<body>
+   <svg xmlns="http://www.w3.org/2000/svg" width="0" height="0" version="1.1">
+    <defs>
+      <filter id="MyFilter">
+        <fecolormatrix id="color" type="hueRotate" values="90"></fecolormatrix>
+      </filter>
+    </defs>
+  </svg>
+  <div style="filter: url(#MyFilter); width:100px; height:100px; background-color:red;"></div>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/root-element-with-opacity-filter-001-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/root-element-with-opacity-filter-001-ref.html
new file mode 100644
index 00000000000..cd16e54c8e5
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/root-element-with-opacity-filter-001-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<html>
+<body style="filter: opacity(0.501)">
+This test ensures we properly paint the root element when an opacity filter is applied.
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/svg-relative-urls-0001-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/svg-relative-urls-001-ref.html
similarity index 100%
rename from tests/wpt/web-platform-tests/css/filter-effects/reference/svg-relative-urls-0001-ref.html
rename to tests/wpt/web-platform-tests/css/filter-effects/reference/svg-relative-urls-001-ref.html
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/reference/svg-relative-urls-002-ref.html b/tests/wpt/web-platform-tests/css/filter-effects/reference/svg-relative-urls-002-ref.html
new file mode 100644
index 00000000000..344ee53e032
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/reference/svg-relative-urls-002-ref.html
@@ -0,0 +1,7 @@
+<!DOCTYPE html>
+<style>
+img {
+    margin: 10px;
+}
+</style>
+<img style="filter: url(../support/hueRotate.svg#MyFilter)" src="../support/color-palette.png">
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/root-element-with-opacity-filter-001.html b/tests/wpt/web-platform-tests/css/filter-effects/root-element-with-opacity-filter-001.html
new file mode 100644
index 00000000000..577e2bd4c03
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/root-element-with-opacity-filter-001.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<title>Opacity Filter: root element opacity filter</title>
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#funcdef-filter-opacity">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=349587">
+<link rel="match" href="reference/root-element-with-opacity-filter-001-ref.html">
+<meta name="assert" content="This test ensures that the root renderer has an opacity filter"/>
+<html style="filter: opacity(0.501)">
+This test ensures we properly paint the root element when an opacity filter is applied.
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/support/filter-from-external-url.css b/tests/wpt/web-platform-tests/css/filter-effects/support/filter-from-external-url.css
new file mode 100644
index 00000000000..2940461016c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/support/filter-from-external-url.css
@@ -0,0 +1,3 @@
+.hue-rotate {
+    filter: url('hueRotate.svg#MyFilter');
+}
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-0001.html b/tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-001.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-0001.html
rename to tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-001.html
index 3edf7447b8f..5dd382c6dfd 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-0001.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-001.html
@@ -4,7 +4,7 @@
 <link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
 <link rel="help" href="https://drafts.csswg.org/css-values-4/#relative-urls">
 <link rel="help" href="https://crbug.com/405315"/>
-<link rel="match" href="reference/svg-relative-urls-0001-ref.html">
+<link rel="match" href="reference/svg-relative-urls-001-ref.html">
 <meta name="assert" content="This test checks that relative SVG filter references in inline styles are correct after an element moves documents.">
 
 <body onload="runTest()">
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-002.html b/tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-002.html
new file mode 100644
index 00000000000..278ea164543
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/svg-relative-urls-002.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<title>SVG Filters: relative URLs from external stylesheets</title>
+<link rel="author" title="Fredrik Söderquist" href="mailto:fs@opera.com">
+<link rel="help" href="https://drafts.csswg.org/css-values-4/#relative-urls">
+<link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=405315">
+<link rel="match" href="reference/svg-relative-urls-002-ref.html">
+<meta name="assert" content="Check that SVG filters can be referenced from external stylesheets using a relative URL">
+
+<link rel="stylesheet" href="support/filter-from-external-url.css"
+      onload="document.body && document.body.offsetTop">
+<style>
+img {
+    margin: 10px;
+}
+</style>
+<img class="hue-rotate" src="support/color-palette.png">
diff --git a/tests/wpt/web-platform-tests/dom/events/scrolling/scrollend-event-fired-for-programmatic-scroll.html b/tests/wpt/web-platform-tests/dom/events/scrolling/scrollend-event-fired-for-programmatic-scroll.html
new file mode 100644
index 00000000000..79b5f5f0186
--- /dev/null
+++ b/tests/wpt/web-platform-tests/dom/events/scrolling/scrollend-event-fired-for-programmatic-scroll.html
@@ -0,0 +1,134 @@
+<!DOCTYPE HTML>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="scroll_support.js"></script>
+<style>
+html {
+  height: 3000px;
+  width: 3000px;
+}
+#targetDiv {
+  width: 200px;
+  height: 200px;
+  overflow: scroll;
+}
+
+#innerDiv {
+  width: 400px;
+  height: 400px;
+}
+</style>
+
+<body style="margin:0" onload=runTest()>
+<div id="targetDiv">
+  <div id="innerDiv">
+  </div>
+</div>
+</body>
+<script>
+var element_scrollend_arrived = false;
+var document_scrollend_arrived = false;
+
+function onElementScrollEnd(event) {
+  assert_false(event.cancelable);
+  assert_false(event.bubbles);
+  element_scrollend_arrived = true;
+}
+
+function onDocumentScrollEnd(event) {
+  assert_false(event.cancelable);
+  // scrollend events are bubbled when the target node is document.
+  assert_true(event.bubbles);
+  document_scrollend_arrived = true;
+}
+
+function callScrollFunction([scrollTarget, scrollFunction, args]) {
+  scrollTarget[scrollFunction](args);
+}
+
+function runTest() {
+  let root_element = document.scrollingElement;
+  let target_div = document.getElementById("targetDiv");
+
+  promise_test (async (t) => {
+    await waitForCompositorCommit();
+    target_div.addEventListener("scrollend", onElementScrollEnd);
+    document.addEventListener("scrollend", onDocumentScrollEnd);
+
+    let test_cases = [
+      [target_div, 200, 200, [target_div, "scrollTo", { top: 200, left: 200, behavior: "auto" }]],
+      [target_div, 0, 0, [target_div, "scrollTo", { top: 0, left: 0, behavior: "smooth" }]],
+      [root_element, 200, 200, [root_element, "scrollTo", { top: 200, left: 200, behavior: "auto" }]],
+      [root_element, 0, 0, [root_element, "scrollTo", { top: 0, left: 0, behavior: "smooth" }]],
+      [target_div, 200, 200, [target_div, "scrollBy", { top: 200, left: 200, behavior: "auto" }]],
+      [target_div, 0, 0, [target_div, "scrollBy", { top: -200, left: -200, behavior: "smooth" }]],
+      [root_element, 200, 200, [root_element, "scrollBy", { top: 200, left: 200, behavior: "auto" }]],
+      [root_element, 0, 0, [root_element, "scrollBy", { top: -200, left: -200, behavior: "smooth" }]]
+    ];
+
+    for(i = 0; i < test_cases.length; i++) {
+      let t = test_cases[i];
+      let target = t[0];
+      let expected_x = t[1];
+      let expected_y = t[2];
+      let scroll_datas = t[3];
+
+      callScrollFunction(scroll_datas);
+      await waitFor(() => { return element_scrollend_arrived || document_scrollend_arrived; }, target.tagName + "." + scroll_datas[1] + " did not receive scrollend event.");
+      if (target == root_element)
+        assert_false(element_scrollend_arrived);
+      else
+        assert_false(document_scrollend_arrived);
+      assert_equals(target.scrollLeft, expected_x, target.tagName + "." + scroll_datas[1] + " scrollLeft");
+      assert_equals(target.scrollTop, expected_y, target.tagName + "." + scroll_datas[1] + " scrollTop");
+
+      element_scrollend_arrived = false;
+      document_scrollend_arrived = false;
+    }
+  }, "Tests scrollend event for calling scroll functions.");
+
+  promise_test(async (t) => {
+    await waitForCompositorCommit();
+
+    let test_cases = [
+      [target_div, "scrollTop"],
+      [target_div, "scrollLeft"],
+      [root_element, "scrollTop"],
+      [root_element, "scrollLeft"]
+    ];
+    for (i = 0; i < test_cases.length; i++) {
+      let t = test_cases[i];
+      let target = t[0];
+      let attribute = t[1];
+      let position = 200;
+
+      target.style.scrollBehavior = "smooth";
+      target[attribute] = position;
+      await waitFor(() => { return element_scrollend_arrived || document_scrollend_arrived; }, target.tagName + "." + attribute + " did not receive scrollend event.");
+      if (target == root_element)
+        assert_false(element_scrollend_arrived);
+      else
+        assert_false(document_scrollend_arrived);
+      assert_equals(target[attribute], position, target.tagName + "." + attribute + " ");
+      element_scrollend_arrived = false;
+      document_scrollend_arrived = false;
+
+      await waitForCompositorCommit();
+      target.style.scrollBehavior = "auto";
+      target[attribute] = 0;
+      await waitFor(() => { return element_scrollend_arrived || document_scrollend_arrived; }, target.tagName + "." + attribute + " did not receive scrollend event.");
+      if (target == root_element)
+        assert_false(element_scrollend_arrived);
+      else
+        assert_false(document_scrollend_arrived);
+      assert_equals(target[attribute], 0, target.tagName + "." + attribute + " ");
+      element_scrollend_arrived = false;
+      document_scrollend_arrived = false;
+    }
+  }, "Tests scrollend event for changing scroll attributes.");
+}
+</script>
diff --git a/tests/wpt/web-platform-tests/dom/events/scrolling/scrollend-event-fired-for-scrollIntoView.html b/tests/wpt/web-platform-tests/dom/events/scrolling/scrollend-event-fired-for-scrollIntoView.html
new file mode 100644
index 00000000000..63e1c3e22ea
--- /dev/null
+++ b/tests/wpt/web-platform-tests/dom/events/scrolling/scrollend-event-fired-for-scrollIntoView.html
@@ -0,0 +1,123 @@
+<!DOCTYPE HTML>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="scroll_support.js"></script>
+<style>
+html {
+  height: 3000px;
+  width: 3000px;
+}
+#targetDiv {
+  width: 200px;
+  height: 200px;
+  overflow: scroll;
+}
+
+#innerDiv {
+  width: 400px;
+  height: 400px;
+}
+</style>
+
+<body style="margin:0" onload=runTest()>
+<div id="targetDiv">
+  <div id="innerDiv">
+  </div>
+</div>
+</body>
+<script>
+var element_scrollend_arrived = false;
+var document_scrollend_arrived = false;
+
+function onElementScrollEnd(event) {
+  assert_false(event.cancelable);
+  assert_false(event.bubbles);
+  element_scrollend_arrived = true;
+}
+
+function onDocumentScrollEnd(event) {
+  assert_false(event.cancelable);
+  // scrollend events are bubbled when the target node is document.
+  assert_true(event.bubbles);
+  document_scrollend_arrived = true;
+}
+
+function callScrollFunction([scrollTarget, scrollFunction, args]) {
+  scrollTarget[scrollFunction](args);
+}
+
+function runTest() {
+  let root_element = document.scrollingElement;
+  let target_div = document.getElementById("targetDiv");
+  let inner_div = document.getElementById("innerDiv");
+
+  // Get expected position for root_element scrollIntoView.
+  root_element.scrollTo(10000, 10000);
+  let max_root_x = root_element.scrollLeft;
+  let max_root_y = root_element.scrollTop;
+  root_element.scrollTo(0, 0);
+
+  target_div.scrollTo(10000, 10000);
+  let max_element_x = target_div.scrollLeft;
+  let max_element_y = target_div.scrollTop;
+  target_div.scrollTo(0, 0);
+
+  promise_test (async (t) => {
+    await waitForCompositorCommit();
+    target_div.addEventListener("scrollend", onElementScrollEnd);
+    document.addEventListener("scrollend", onDocumentScrollEnd);
+
+    let test_cases = [
+      [target_div, max_element_x, max_element_y, [inner_div, "scrollIntoView", { inline: "end", block: "end", behavior: "auto" }]],
+      [target_div, 0, 0, [inner_div, "scrollIntoView", { inline: "start", block: "start", behavior: "smooth" }]],
+      [root_element, max_root_x, max_root_y, [root_element, "scrollIntoView", { inline: "end", block: "end", behavior: "smooth" }]],
+      [root_element, 0, 0, [root_element, "scrollIntoView", { inline: "start", block: "start", behavior: "smooth" }]]
+    ];
+
+    for(i = 0; i < test_cases.length; i++) {
+      let t = test_cases[i];
+      let target = t[0];
+      let expected_x = t[1];
+      let expected_y = t[2];
+      let scroll_datas = t[3];
+
+      callScrollFunction(scroll_datas);
+      await waitFor(() => { return element_scrollend_arrived || document_scrollend_arrived; }, target.tagName + ".scrollIntoView  did not receive scrollend event.");
+      if (target == root_element)
+        assert_false(element_scrollend_arrived);
+      else
+        assert_false(document_scrollend_arrived);
+      assert_equals(target.scrollLeft, expected_x, target.tagName + ".scrollIntoView scrollLeft");
+      assert_equals(target.scrollTop, expected_y, target.tagName + ".scrollIntoView scrollTop");
+
+      element_scrollend_arrived = false;
+      document_scrollend_arrived = false;
+    }
+  }, "Tests scrollend event for scrollIntoView.");
+
+  promise_test(async (t) => {
+    document.body.removeChild(target_div);
+    let out_div = document.createElement("div");
+    out_div.style = "width: 100px; height:100px; overflow:scroll; scroll-behavior:smooth;";
+    out_div.appendChild(target_div);
+    document.body.appendChild(out_div);
+    await waitForCompositorCommit();
+
+    element_scrollend_arrived = false;
+    document_scrollend_arrived = false;
+    inner_div.scrollIntoView({ inline: "end", block: "end", behavior: "auto" });
+    await waitFor(() => { return element_scrollend_arrived || document_scrollend_arrived; }, "Nested scrollIntoView did not receive scrollend event.");
+    assert_equals(root_element.scrollLeft, 0, "Nested scrollIntoView root_element scrollLeft");
+    assert_equals(root_element.scrollTop, 0, "Nested scrollIntoView root_element scrollTop");
+    assert_equals(out_div.scrollLeft, 100, "Nested scrollIntoView out_div scrollLeft");
+    assert_equals(out_div.scrollTop, 100, "Nested scrollIntoView out_div scrollTop");
+    assert_equals(target_div.scrollLeft, max_element_x, "Nested scrollIntoView target_div scrollLeft");
+    assert_equals(target_div.scrollTop, max_element_y, "Nested scrollIntoView target_div scrollTop");
+    assert_false(document_scrollend_arrived);
+  }, "Tests scrollend event for nested scrollIntoView.");
+}
+</script>
diff --git a/tests/wpt/web-platform-tests/html/semantics/embedded-content/the-img-element/natural-size-orientation.html b/tests/wpt/web-platform-tests/html/semantics/embedded-content/the-img-element/natural-size-orientation.html
new file mode 100644
index 00000000000..662dc0804fa
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/embedded-content/the-img-element/natural-size-orientation.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>naturalWidth and naturalHeight on HTMLImageElement reflect orientation metadata</title>
+<link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+.ignore-orientation { image-orientation: none; }
+</style>
+<body>
+<script>
+async_test(function(t) {
+  let img = document.createElement("img");
+  img.src = "/images/green-100x50.png";
+  img.onload = t.step_func_done(function() {
+    assert_equals(img.naturalWidth, 100);
+    assert_equals(img.naturalHeight, 50);
+    img.remove();
+  });
+  document.body.append(img);
+}, "naturalWidth and naturalHeight return correct values for an image without orientation metadata");
+
+async_test(function(t) {
+  let img = document.createElement("img");
+  img.src = "/images/arrow-oriented-upright.jpg";
+  img.onload = t.step_func_done(function() {
+    assert_equals(img.naturalWidth, 144);
+    assert_equals(img.naturalHeight, 240);
+    img.remove();
+  });
+  document.body.append(img);
+}, "naturalWidth and naturalHeight return re-oriented values for an image with orientation metadata");
+
+async_test(function(t) {
+  let img = document.createElement("img");
+  img.src = "/images/arrow-oriented-upright.jpg";
+  img.className = "ignore-orientation";
+  img.onload = t.step_func_done(function() {
+    assert_equals(img.naturalWidth, 144);
+    assert_equals(img.naturalHeight, 240);
+    img.remove();
+  });
+  document.body.append(img);
+}, "naturalWidth and naturalHeight return re-oriented values for an image with orientation metadata even with image-orientation:none");
+</script>
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-interactive-content.html b/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-interactive-content.html
new file mode 100644
index 00000000000..60a80fad9d2
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-interactive-content.html
@@ -0,0 +1,123 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Label event handling when a descendant interactive content is clicked</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<label id=label></label>
+<template id=interactive-content>
+  <a href="about:blank" onclick="event.preventDefault()"></a>
+  <audio controls></audio>
+  <button></button>
+  <details></details>
+  <embed>
+  <iframe></iframe>
+  <img usemap="">
+  <input>
+  <label>label</label>
+  <object usemap=""></object>
+  <select></select>
+  <textarea></textarea>
+  <video controls></video>
+
+  <div tabindex=""></div>
+
+  <!-- These are interesting in that even without tabindex, they could become
+  interactive with the addition/removal of an attribute. -->
+  <a tabindex=""></a>
+  <audio tabindex=""></audio>
+  <img tabindex="">
+  <input type=hidden tabindex="">
+  <object tabindex=""></object>
+  <video tabindex=""></video>
+</template>
+
+<script>
+"use strict";
+
+const interactiveContent = document.getElementById("interactive-content");
+const interactiveElements = Array.from(interactiveContent.content.children);
+const label = document.getElementById("label");
+
+for (const srcInteractiveElement of interactiveElements) {
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const interactiveElement = srcInteractiveElement.cloneNode();
+    label.appendChild(interactiveElement);
+
+    let clicked = 0;
+    interactiveElement.addEventListener("click", () => {
+      clicked++;
+    });
+    interactiveElement.click();
+    assert_equals(clicked, 1, "clicking interactive content");
+
+    clicked = 0;
+    const span = document.createElement("span");
+    interactiveElement.appendChild(span);
+    span.click();
+    assert_equals(clicked, 1, "clicking descendant of interactive content");
+  }, `interactive content ${srcInteractiveElement.outerHTML} as first child of <label>`);
+
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const interactiveElement = srcInteractiveElement.cloneNode();
+    const div = document.createElement("div");
+    div.appendChild(interactiveElement);
+    label.appendChild(div);
+
+    let clicked = 0;
+    interactiveElement.addEventListener("click", () => {
+      clicked++;
+    });
+    interactiveElement.click();
+    assert_equals(clicked, 1, "clicking nested interactive content");
+
+    clicked = 0;
+    const span = document.createElement("span");
+    interactiveElement.appendChild(span);
+    span.click();
+    assert_equals(clicked, 1, "clicking descendant of nested interactive content");
+  }, `interactive content ${srcInteractiveElement.outerHTML} deeply nested under <label>`);
+
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const button = document.createElement("button");
+    label.appendChild(button);
+
+    const interactiveElement = srcInteractiveElement.cloneNode();
+    label.appendChild(interactiveElement);
+
+    let buttonClicked = 0;
+    button.addEventListener("click", () => {
+      buttonClicked++;
+    });
+
+    let clicked = 0;
+    interactiveElement.addEventListener("click", () => {
+      clicked++;
+    });
+    interactiveElement.click();
+    assert_equals(clicked, 1, "clicking nested interactive content");
+    assert_equals(buttonClicked, 0, "clicking nested interactive content should not click button");
+
+    clicked = 0;
+    const span = document.createElement("span");
+    interactiveElement.appendChild(span);
+    span.click();
+    assert_equals(clicked, 1, "clicking descendant of nested interactive content");
+    assert_equals(buttonClicked, 0, "clicking descendant of nested interactive content should not click button");
+  }, `interactive content ${srcInteractiveElement.outerHTML} as second child under <label>`);
+}
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-noninteractive-labelable-content.html b/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-noninteractive-labelable-content.html
new file mode 100644
index 00000000000..5563ef1e3c7
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-noninteractive-labelable-content.html
@@ -0,0 +1,112 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Label event handling when a descendant labelable but not interactive element is clicked</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<label id=label></label>
+<template id=labelable-not-interactive-content>
+  <meter></meter>
+  <output></output>
+  <progress></progress>
+</template>
+
+<script>
+"use strict";
+
+const template = document.getElementById("labelable-not-interactive-content");
+const labelableNotInteractiveElements = Array.from(template.content.children);
+const label = document.getElementById("label");
+
+// This part may be subject to platform-dependent operations in the spec, so we
+// only check for obvious errors. (Clicking once should register at least one
+// click, but less than 30 clicks.) See
+// https://github.com/whatwg/html/issues/5415 for possibly tightening this up.
+function checkClickCount(clicked, description) {
+  assert_greater_than(clicked, 0, description);
+  assert_less_than(clicked, 30, description);
+}
+
+for (const srcElement of labelableNotInteractiveElements) {
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const element = srcElement.cloneNode();
+    label.appendChild(element);
+
+    let clicked = 0;
+    element.addEventListener("click", () => {
+      clicked++;
+    });
+    element.click();
+    checkClickCount(clicked, "clicking labelable content");
+
+    clicked = 0;
+    const span = document.createElement("span");
+    element.appendChild(span);
+    span.click();
+    checkClickCount(clicked, "clicking descendant of labelable content");
+  }, `labelable element ${srcElement.outerHTML} as first child of <label>`);
+
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const element = srcElement.cloneNode();
+    const div = document.createElement("div");
+    div.appendChild(element);
+    label.appendChild(div);
+
+    let clicked = 0;
+    element.addEventListener("click", () => {
+      clicked++;
+    });
+    element.click();
+    checkClickCount(clicked, "clicking nested labelable content");
+
+    clicked = 0;
+    const span = document.createElement("span");
+    element.appendChild(span);
+    span.click();
+    checkClickCount(clicked, "clicking descendant of nested labelable content");
+  }, `labelable element ${srcElement.outerHTML} deeply nested under <label>`);
+
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const button = document.createElement("button");
+    label.appendChild(button);
+
+    const element = srcElement.cloneNode();
+    label.appendChild(element);
+
+    let buttonClicked = 0;
+    button.addEventListener("click", () => {
+      buttonClicked++;
+    });
+
+    let clicked = 0;
+    element.addEventListener("click", () => {
+      clicked++;
+    });
+    element.click();
+    assert_equals(clicked, 1, "clicking nested labelable content");
+    assert_equals(buttonClicked, 1, "clicking nested labelable content should click button");
+
+    buttonClicked = 0;
+    clicked = 0;
+    const span = document.createElement("span");
+    element.appendChild(span);
+    span.click();
+    assert_equals(clicked, 1, "clicking descendant of nested labelable content");
+    assert_equals(buttonClicked, 1, "clicking descendant of nested labelable content should not click button");
+  }, `labelable element ${srcElement.outerHTML} as second child under <label>`);
+}
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-noninteractive-unlabelable-content.html b/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-noninteractive-unlabelable-content.html
new file mode 100644
index 00000000000..233168f5664
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/the-label-element/clicking-noninteractive-unlabelable-content.html
@@ -0,0 +1,119 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Label event handling when a descendant noninteractive and unlabelable content is clicked</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<label id=label></label>
+<template id=noninteractive-unlabelable-content>
+  <div></div>
+  <svg></svg>
+
+  <!-- These are "almost interactive": they could become interactive with the
+  addition/removal of a non-tabindex attribute. -->
+  <a></a>
+  <audio></audio>
+  <img>
+  <input type=hidden>
+  <object></object>
+  <video></video>
+</template>
+
+<script>
+"use strict";
+
+const template = document.getElementById("noninteractive-unlabelable-content");
+{
+  const details = document.createElementNS("http://www.w3.org/2000/svg", "details");
+  template.content.appendChild(details);
+}
+
+const elements = Array.from(template.content.children);
+const label = document.getElementById("label");
+
+for (const srcElement of elements) {
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const element = srcElement.cloneNode();
+    label.appendChild(element);
+
+    let clicked = 0;
+    element.addEventListener("click", () => {
+      clicked++;
+    });
+    element.dispatchEvent(new MouseEvent("click", { bubbles: true }));
+    assert_equals(clicked, 1, "clicking interactive content");
+
+    clicked = 0;
+    const span = document.createElement("span");
+    element.appendChild(span);
+    span.click();
+    assert_equals(clicked, 1, "clicking descendant of interactive content");
+  }, `noninteractive unlabelable content ${srcElement.outerHTML} as first child of <label>`);
+
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const element = srcElement.cloneNode();
+    const div = document.createElement("div");
+    div.appendChild(element);
+    label.appendChild(div);
+
+    let clicked = 0;
+    element.addEventListener("click", () => {
+      clicked++;
+    });
+    element.dispatchEvent(new MouseEvent("click", { bubbles: true }));
+    assert_equals(clicked, 1, "clicking nested interactive content");
+
+    clicked = 0;
+    const span = document.createElement("span");
+    element.appendChild(span);
+    span.click();
+    assert_equals(clicked, 1, "clicking descendant of nested interactive content");
+  }, `noninteractive unlabelable content ${srcElement.outerHTML} deeply nested under <label>`);
+
+  test(t => {
+    t.add_cleanup(() => {
+      label.innerHTML = "";
+    });
+
+    const button = document.createElement("button");
+    label.appendChild(button);
+
+    const element = srcElement.cloneNode();
+    label.appendChild(element);
+
+    let buttonClicked = 0;
+    button.addEventListener("click", () => {
+      buttonClicked++;
+    });
+
+    let clicked = 0;
+    element.addEventListener("click", () => {
+      clicked++;
+    });
+    element.dispatchEvent(new MouseEvent("click", { bubbles: true }));
+    assert_equals(clicked, 1, "clicking noninteractive unlabelable content");
+    assert_equals(buttonClicked, 1, "clicking noninteractive unlabelable content should click button");
+
+    buttonClicked = 0;
+    clicked = 0;
+    const span = document.createElement("span");
+    element.appendChild(span);
+    span.click();
+    assert_equals(clicked, 1, "clicking descendant of nested noninteractive unlabelable content");
+    assert_equals(
+      buttonClicked, 1,
+      "clicking descendant of nested noninteractive unlabelable content should click button"
+    );
+  }, `noninteractive unlabelable content ${srcElement.outerHTML} as second child under <label>`);
+}
+
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/images/arrow-oriented-upright.jpg b/tests/wpt/web-platform-tests/images/arrow-oriented-upright.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..cebc99af14b6050a416031cf219f8cd7a72ee458
GIT binary patch
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zQVgtMHUonfqcofy#HayP!^FVABn)LU0#!l)&}5)~29OO5jQ?*lID>4Y2!ITs$N-S$
z{|6WZIT$7|d|+l2WMC3xWEN!ne}q9E=tfqE*$~$Q`Ap0#tZeKYoLt;M1zQCem>8Lv
znOK-vSy@<svb8{Y1{Oh9Aw@$+HsQcTcBMiQqsEB~Ih36?9uy6__(8=usi=vQOH5os
zQc6`#T|-mL#MI2(!qUpw#nsK-!_zA`Bs45MA~GsDB{eNQBQvYGq_nKOqOz*FrM0cS
zqqA$$<SA39O`kDy)}qBrmM&YqV&$q$o40J;wtdIWU55@IIeP5)iIb-;UA}Vl+VvYZ
zZ#{hU_{q~}&tJTJ_3_i^FJHfX|MBw|$X|>M%<v$C_zcZoz(8PRVqsxsVF&q(k*OTy
zaX}VVMME|r$3XVPLSZGNMh+3Di3>L#<Wx2e`XHKAbdgI;#pI#tN08URJ|oU!O=S5D
z?lFYFZZYsMGXf)zS&+e=;Xi}@F9r>U1xyWG15Gji{fBS}{|9!W-9(H=h#G9B+TVW!
z^!tAXhAIXP+^T?~gIkg~Bal^L1~^0(5dfeFfjA1P7Ps|qx1mNN+_Mm!sFF|~Tn(m!
zaF|MzMv!R(=3QdK3(31U+=)XNBbVTf79?wM1SkFoK=BG{1QMkY)qYBN_Wy4J04b2f
AJpcdz

literal 0
HcmV?d00001

diff --git a/tests/wpt/web-platform-tests/interfaces/css-typed-om.idl b/tests/wpt/web-platform-tests/interfaces/css-typed-om.idl
index df9669e5637..00d3f49bfe6 100644
--- a/tests/wpt/web-platform-tests/interfaces/css-typed-om.idl
+++ b/tests/wpt/web-platform-tests/interfaces/css-typed-om.idl
@@ -41,9 +41,9 @@ partial interface mixin ElementCSSInlineStyle {
     [SameObject] readonly attribute StylePropertyMap attributeStyleMap;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(sequence<CSSUnparsedSegment> members)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSUnparsedValue : CSSStyleValue {
+    constructor(sequence<CSSUnparsedSegment> members);
     iterable<CSSUnparsedSegment>;
     readonly attribute unsigned long length;
     getter CSSUnparsedSegment (unsigned long index);
@@ -52,16 +52,16 @@ interface CSSUnparsedValue : CSSStyleValue {
 
 typedef (USVString or CSSVariableReferenceValue) CSSUnparsedSegment;
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(USVString variable, optional CSSUnparsedValue? fallback = null)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSVariableReferenceValue {
+    constructor(USVString variable, optional CSSUnparsedValue? fallback = null);
     attribute USVString variable;
     readonly attribute CSSUnparsedValue? fallback;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(USVString value)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSKeywordValue : CSSStyleValue {
+    constructor(USVString value);
     attribute USVString value;
 };
 
@@ -108,9 +108,9 @@ interface CSSNumericValue : CSSStyleValue {
     [Exposed=Window] static CSSNumericValue parse(USVString cssText);
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(double value, USVString unit)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSUnitValue : CSSNumericValue {
+    constructor(double value, USVString unit);
     attribute double value;
     readonly attribute USVString unit;
 };
@@ -120,45 +120,45 @@ interface CSSMathValue : CSSNumericValue {
     readonly attribute CSSMathOperator operator;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumberish... args)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSMathSum : CSSMathValue {
+    constructor(CSSNumberish... args);
     readonly attribute CSSNumericArray values;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumberish... args)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSMathProduct : CSSMathValue {
+    constructor(CSSNumberish... args);
     readonly attribute CSSNumericArray values;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumberish arg)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSMathNegate : CSSMathValue {
+    constructor(CSSNumberish arg);
     readonly attribute CSSNumericValue value;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumberish arg)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSMathInvert : CSSMathValue {
+    constructor(CSSNumberish arg);
     readonly attribute CSSNumericValue value;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumberish... args)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSMathMin : CSSMathValue {
+    constructor(CSSNumberish... args);
     readonly attribute CSSNumericArray values;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumberish... args)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSMathMax : CSSMathValue {
+    constructor(CSSNumberish... args);
     readonly attribute CSSNumericArray values;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumberish min, CSSNumberish val, CSSNumberish max)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSMathClamp : CSSMathValue {
+    constructor(CSSNumberish min, CSSNumberish val, CSSNumberish max);
     readonly attribute CSSNumericValue min;
     readonly attribute CSSNumericValue val;
     readonly attribute CSSNumericValue max;
@@ -230,9 +230,9 @@ partial namespace CSS {
     CSSUnitValue fr(double value);
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(sequence<CSSTransformComponent> transforms)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSTransformValue : CSSStyleValue {
+    constructor(sequence<CSSTransformComponent> transforms);
     iterable<CSSTransformComponent>;
     readonly attribute unsigned long length;
     getter CSSTransformComponent (unsigned long index);
@@ -249,63 +249,63 @@ interface CSSTransformComponent {
     DOMMatrix toMatrix();
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumericValue x, CSSNumericValue y, optional CSSNumericValue z)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSTranslate : CSSTransformComponent {
+    constructor(CSSNumericValue x, CSSNumericValue y, optional CSSNumericValue z);
     attribute CSSNumericValue x;
     attribute CSSNumericValue y;
     attribute CSSNumericValue z;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumericValue angle),
- Constructor(CSSNumberish x, CSSNumberish y, CSSNumberish z, CSSNumericValue angle)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSRotate : CSSTransformComponent {
+    constructor(CSSNumericValue angle);
+    constructor(CSSNumberish x, CSSNumberish y, CSSNumberish z, CSSNumericValue angle);
     attribute CSSNumberish x;
     attribute CSSNumberish y;
     attribute CSSNumberish z;
     attribute CSSNumericValue angle;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumberish x, CSSNumberish y, optional CSSNumberish z)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSScale : CSSTransformComponent {
+    constructor(CSSNumberish x, CSSNumberish y, optional CSSNumberish z);
     attribute CSSNumberish x;
     attribute CSSNumberish y;
     attribute CSSNumberish z;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumericValue ax, CSSNumericValue ay)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSSkew : CSSTransformComponent {
+    constructor(CSSNumericValue ax, CSSNumericValue ay);
     attribute CSSNumericValue ax;
     attribute CSSNumericValue ay;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumericValue ax)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSSkewX : CSSTransformComponent {
+    constructor(CSSNumericValue ax);
     attribute CSSNumericValue ax;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumericValue ay)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSSkewY : CSSTransformComponent {
+    constructor(CSSNumericValue ay);
     attribute CSSNumericValue ay;
 };
 
 /* Note that skew(x,y) is *not* the same as skewX(x) skewY(y),
    thus the separate interfaces for all three. */
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(CSSNumericValue length)]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSPerspective : CSSTransformComponent {
+    constructor(CSSNumericValue length);
     attribute CSSNumericValue length;
 };
 
-[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet),
- Constructor(DOMMatrixReadOnly matrix, optional CSSMatrixComponentOptions options = {})]
+[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
 interface CSSMatrixComponent : CSSTransformComponent {
+    constructor(DOMMatrixReadOnly matrix, optional CSSMatrixComponentOptions options = {});
     attribute DOMMatrix matrix;
 };
 
diff --git a/tests/wpt/web-platform-tests/interfaces/permissions.idl b/tests/wpt/web-platform-tests/interfaces/permissions.idl
index 9cde372a127..d45c7f93cac 100644
--- a/tests/wpt/web-platform-tests/interfaces/permissions.idl
+++ b/tests/wpt/web-platform-tests/interfaces/permissions.idl
@@ -46,6 +46,10 @@ dictionary DevicePermissionDescriptor : PermissionDescriptor {
   DOMString deviceId;
 };
 
+dictionary CameraDevicePermissionDescriptor : DevicePermissionDescriptor {
+  boolean panTiltZoom = false;
+};
+
 dictionary PermissionSetParameters {
   required PermissionDescriptor descriptor;
   required PermissionState state;
diff --git a/tests/wpt/web-platform-tests/interfaces/worklets.idl b/tests/wpt/web-platform-tests/interfaces/worklets.idl
index 16187664b3b..f89eacd50bd 100644
--- a/tests/wpt/web-platform-tests/interfaces/worklets.idl
+++ b/tests/wpt/web-platform-tests/interfaces/worklets.idl
@@ -9,7 +9,7 @@ interface WorkletGlobalScope {
 
 [Exposed=Window]
 interface Worklet {
-    [NewObject] Promise<void> addModule(USVString moduleURL, optional WorkletOptions options);
+    [NewObject] Promise<void> addModule(USVString moduleURL, optional WorkletOptions options = {});
 };
 
 dictionary WorkletOptions {
diff --git a/tests/wpt/web-platform-tests/shadow-dom/slots-imperative-slot-api.tentative.html b/tests/wpt/web-platform-tests/shadow-dom/slots-imperative-slot-api.tentative.html
index 56dd71b1156..6d3997b085c 100644
--- a/tests/wpt/web-platform-tests/shadow-dom/slots-imperative-slot-api.tentative.html
+++ b/tests/wpt/web-platform-tests/shadow-dom/slots-imperative-slot-api.tentative.html
@@ -136,6 +136,21 @@ test(() => {
   assert_equals(tTree.c3.assignedSlot, tTree.s3);
 }, 'Previously assigned slotable is moved to new slot when it\'s reassigned.');
 
+test(() => {
+ let tTree = createTestTree(test_assign);
+
+  tTree.s1.assign([tTree.c1]);
+  tTree.s2.assign([tTree.c2, tTree.c1]);
+  tTree.s3.assign([tTree.c1, tTree.c3]);
+
+  assert_array_equals(tTree.s1.assignedNodes(), []);
+  assert_array_equals(tTree.s2.assignedNodes(), [tTree.c2]);
+  assert_array_equals(tTree.s3.assignedNodes(), [tTree.c1, tTree.c3]);
+  assert_equals(tTree.c1.assignedSlot, tTree.s3);
+  assert_equals(tTree.c2.assignedSlot, tTree.s2);
+  assert_equals(tTree.c3.assignedSlot, tTree.s3);
+}, 'Order and assignment of nodes are preserved during multiple assignment in a row.');
+
 test(() => {
   let tTree = createTestTree(test_assign);
 
@@ -194,7 +209,7 @@ test(() => {
   assert_array_equals(tTree.s4.assignedNodes(), []);
 
   tTree.ns1.append(tTree.s1);
-  assert_array_equals(tTree.s1.assignedNodes(), [tTree.c1, tTree.c2, tTree.c3]);
+  assert_array_equals(tTree.s1.assignedNodes(), []);
 }, 'Moving a slot\'s tree order position within a shadow host has no impact on its assigned slotables.');
 
 test(() => {
@@ -207,11 +222,41 @@ test(() => {
   assert_array_equals(tTree.s1.assignedNodes(), [tTree.c2, tTree.c3]);
   assert_array_equals(tTree.s4.assignedNodes(), []);
 
-  tTree.s4.assign(tTree.c1);
+  tTree.s4.assign([tTree.c1]);
   assert_array_equals(tTree.s4.assignedNodes(), [tTree.c1]);
   assert_equals(tTree.c1.assignedSlot, tTree.s4);
 }, 'Appending slotable to different host, it loses slot assignment. It can be re-assigned within a new host.');
 
+test(() => {
+  let tTree = createTestTree(test_assign);
+
+  tTree.s1.assign([tTree.c1]);
+  assert_array_equals(tTree.s1.assignedNodes(), [tTree.c1]);
+
+  tTree.shadow_root4.insertBefore(tTree.s1, tTree.s4);
+  assert_array_equals(tTree.s1.assignedNodes(), []);
+  // Don't trigger slot assignment on previous shadow root.
+  // assert_array_equals(tTree.s2.assignedNodes(), []);
+
+  tTree.shadow_root.insertBefore(tTree.s1, tTree.s2);
+  assert_array_equals(tTree.s1.assignedNodes(), []);
+}, 'Previously assigned node should not be assigned if slot moved to a new shadow root. The slot remains empty when moved back, no trigger recalc.');
+
+test(() => {
+  let tTree = createTestTree(test_assign);
+
+  tTree.s1.assign([tTree.c1]);
+  assert_array_equals(tTree.s1.assignedNodes(), [tTree.c1]);
+
+  tTree.shadow_root4.insertBefore(tTree.s1, tTree.s4);
+  assert_array_equals(tTree.s1.assignedNodes(), []);
+  // Trigger slot assignment on previous shadow root.
+  assert_array_equals(tTree.s2.assignedNodes(), []);
+
+  tTree.shadow_root.insertBefore(tTree.s1, tTree.s2);
+  assert_array_equals(tTree.s1.assignedNodes(), []);
+}, 'Previously assigned node should not be assigned if slot moved to a new shadow root. The slot remains empty when moved back, trigger recalc.');
+
 test(() => {
   let tTree = createTestTree(test_assign);
 
diff --git a/tests/wpt/web-platform-tests/tools/ci/azure/safari-technology-preview.rb b/tests/wpt/web-platform-tests/tools/ci/azure/safari-technology-preview.rb
index 5f8d6806107..d58664c5b6c 100644
--- a/tests/wpt/web-platform-tests/tools/ci/azure/safari-technology-preview.rb
+++ b/tests/wpt/web-platform-tests/tools/ci/azure/safari-technology-preview.rb
@@ -1,10 +1,10 @@
 cask 'safari-technology-preview' do
   if MacOS.version <= :mojave
-    version '103,061-90754-20200325-37467264-9c34-454c-be4a-1cb87e93c62c'
-    sha256 'f2175a2ca69152b6c1067d47b56d464b0ba0c71323a76137b488a8088a25f44c'
+    version '104,061-96689-20200407-7f675598-e07d-46db-8b24-b10c33a006ba'
+    sha256 'bc1b0a79f99022aae802bbb1e83a6a13613a339115063489fc240567b1b5d81d'
   else
-    version '103,061-90752-20200325-cc5192c4-619a-45b4-83b5-70a1bed8c912'
-    sha256 '846f2c9e7ebcc293f01ea36c8e1184e2d1bfb985eb3a590fc7c730c40e10a4b6'
+    version '104,061-96685-20200407-907fca12-9ba9-4bfa-8b8c-d5bf101d534b'
+    sha256 '3dcfde56386f38984c9ede1d67714c43699c5cafece9608ee2730484bffdcf9c'
   end
 
   url "https://secure-appldnld.apple.com/STP/#{version.after_comma}/SafariTechnologyPreview.dmg"
diff --git a/tests/wpt/web-platform-tests/tools/manifest/tests/test_manifest.py b/tests/wpt/web-platform-tests/tools/manifest/tests/test_manifest.py
index 6f11eb59740..6d329ad38f9 100644
--- a/tests/wpt/web-platform-tests/tools/manifest/tests/test_manifest.py
+++ b/tests/wpt/web-platform-tests/tools/manifest/tests/test_manifest.py
@@ -1,4 +1,5 @@
 import os
+import sys
 
 import mock
 
@@ -105,7 +106,10 @@ def manifest_tree(draw):
 
     return output
 
+
 @h.given(manifest_tree())
+# FIXME: Workaround for https://github.com/web-platform-tests/wpt/issues/22758
+@h.settings(suppress_health_check=(h.HealthCheck.too_slow,) if sys.version_info.major == 3 else ())
 @h.example([SourceFileWithTest("a", "0"*40, item.ConformanceCheckerTest)])
 def test_manifest_to_json(s):
     m = manifest.Manifest()
@@ -119,7 +123,10 @@ def test_manifest_to_json(s):
 
     assert loaded.to_json() == json_str
 
+
 @h.given(manifest_tree())
+# FIXME: Workaround for https://github.com/web-platform-tests/wpt/issues/22758
+@h.settings(suppress_health_check=(h.HealthCheck.too_slow,) if sys.version_info.major == 3 else ())
 @h.example([SourceFileWithTest("a", "0"*40, item.TestharnessTest)])
 @h.example([SourceFileWithTest("a", "0"*40, item.RefTest, references=[("/aa", "==")])])
 def test_manifest_idempotent(s):
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/safari.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/safari.py
index dba8432b5a7..cb2b175d4df 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/safari.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/safari.py
@@ -3,7 +3,8 @@ from .base import get_timeout_multiplier   # noqa: F401
 from ..webdriver_server import SafariDriverServer
 from ..executors import executor_kwargs as base_executor_kwargs
 from ..executors.executorwebdriver import (WebDriverTestharnessExecutor,  # noqa: F401
-                                           WebDriverRefTestExecutor)  # noqa: F401
+                                           WebDriverRefTestExecutor,  # noqa: F401
+                                           WebDriverCrashtestExecutor)  # noqa: F401
 from ..executors.executorsafari import SafariDriverWdspecExecutor  # noqa: F401
 
 
@@ -12,7 +13,8 @@ __wptrunner__ = {"product": "safari",
                  "browser": "SafariBrowser",
                  "executor": {"testharness": "WebDriverTestharnessExecutor",
                               "reftest": "WebDriverRefTestExecutor",
-                              "wdspec": "SafariDriverWdspecExecutor"},
+                              "wdspec": "SafariDriverWdspecExecutor",
+                              "crashtest": "WebDriverCrashtestExecutor"},
                  "browser_kwargs": "browser_kwargs",
                  "executor_kwargs": "executor_kwargs",
                  "env_extras": "env_extras",
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_formatters.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_formatters.py
index 72f3a591ad7..60b1b0a5a87 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_formatters.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_formatters.py
@@ -7,6 +7,7 @@ import mock
 from mozlog import handlers, structuredlog
 
 from ..formatters import wptreport
+from ..formatters.wptscreenshot import WptscreenshotFormatter
 from ..formatters.wptreport import WptreportFormatter
 
 
@@ -166,3 +167,26 @@ def test_wptreport_known_intermittent(capfd):
     subtest = test["subtests"][0]
     assert subtest["expected"] == u"PASS"
     assert subtest["known_intermittent"] == [u'FAIL']
+
+
+def test_wptscreenshot_test_end(capfd):
+    formatter = WptscreenshotFormatter()
+
+    # Empty
+    data = {}
+    assert formatter.test_end(data) is None
+
+    # No items
+    data['extra'] = {"reftest_screenshots": []}
+    assert formatter.test_end(data) is None
+
+    # Invalid item
+    data['extra']['reftest_screenshots'] = ["no dict item"]
+    assert formatter.test_end(data) is None
+
+    # Random hash
+    data['extra']['reftest_screenshots'] = [{"hash": "HASH", "screenshot": "DATA"}]
+    assert 'data:image/png;base64,DATA\n' == formatter.test_end(data)
+
+    # Already cached hash
+    assert formatter.test_end(data) is None
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_stability.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_stability.py
index 77cb23a71e1..9a8fccf935a 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_stability.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_stability.py
@@ -117,3 +117,26 @@ def test_log_handler():
     handler.test_start(data)
     handler.test_end(data)
     assert test["timeout"] == timeout * 1000
+
+
+def test_err_string():
+    assert stability.err_string(
+        {u'OK': 1, u'FAIL': 1}, 1) == u"**Duplicate subtest name**"
+    assert stability.err_string(
+        {u'OK': 2, u'FAIL': 1}, 2) == u"**Duplicate subtest name**"
+    assert stability.err_string({u'SKIP': 1}, 0) == u"Duplicate subtest name"
+    assert stability.err_string(
+        {u'SKIP': 1, u'OK': 1}, 1) == u"Duplicate subtest name"
+
+    assert stability.err_string(
+        {u'FAIL': 1}, 2) == u"**FAIL: 1/2, MISSING: 1/2**"
+    assert stability.err_string(
+        {u'FAIL': 1, u'OK': 1}, 3) == u"**FAIL: 1/3, OK: 1/3, MISSING: 1/3**"
+
+    assert stability.err_string(
+        {u'OK': 1, u'FAIL': 1}, 2) == u"**FAIL: 1/2, OK: 1/2**"
+
+    assert stability.err_string(
+        {u'OK': 2, u'FAIL': 1, u'SKIP': 1}, 4) == u"FAIL: 1/4, OK: 2/4, SKIP: 1/4"
+    assert stability.err_string(
+        {u'FAIL': 1, u'SKIP': 1, u'OK': 2}, 4) == u"FAIL: 1/4, OK: 2/4, SKIP: 1/4"
diff --git a/tests/wpt/web-platform-tests/trust-tokens/end-to-end/README.txt b/tests/wpt/web-platform-tests/trust-tokens/end-to-end/README.txt
new file mode 100644
index 00000000000..a86468df9d6
--- /dev/null
+++ b/tests/wpt/web-platform-tests/trust-tokens/end-to-end/README.txt
@@ -0,0 +1,4 @@
+These tests confirm that Trust Tokens protocol operations executed correctly end
+to end (in contrast to just checking, as the parent directory's
+trust-token-parameter-validation does, that a method's interface is present and
+correctly rejects invalid arguments).
diff --git a/tests/wpt/web-platform-tests/trust-tokens/end-to-end/has-trust-token-with-no-top-frame.tentative.https.html b/tests/wpt/web-platform-tests/trust-tokens/end-to-end/has-trust-token-with-no-top-frame.tentative.https.html
new file mode 100644
index 00000000000..4788cd99073
--- /dev/null
+++ b/tests/wpt/web-platform-tests/trust-tokens/end-to-end/has-trust-token-with-no-top-frame.tentative.https.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Tests the Trust Token API's hasTrustToken behavior in documents with no top frame</title>
+<link rel="help" href="https://github.com/WICG/trust-token-api" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+  <script>
+    'use strict';
+
+    const frame = document.createElement('iframe');
+    document.body.appendChild(frame);
+    const cachedDocument = window[0].document;
+    frame.remove();
+
+    test(() => {
+      assert_equals(cachedDocument.hasTrustToken("https://issuer.example"), undefined,
+        "Can't construct a Promise in a destroyed execution context.");
+    }, 'hasTrustToken in a destroyed document.');
+  </script>
+</body>
diff --git a/tests/wpt/web-platform-tests/trust-tokens/end-to-end/has-trust-token.tentative.https.html b/tests/wpt/web-platform-tests/trust-tokens/end-to-end/has-trust-token.tentative.https.html
new file mode 100644
index 00000000000..17e037f7393
--- /dev/null
+++ b/tests/wpt/web-platform-tests/trust-tokens/end-to-end/has-trust-token.tentative.https.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Tests the Trust Token API's hasTrustToken function (tentative: the API is a prototype).</title>
+<link rel="help" href="https://github.com/WICG/trust-token-api#trust-token-redemption" />
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<script>
+  'use strict';
+
+  promise_test((t) => {
+      return promise_rejects_js(t, TypeError, document.hasTrustToken(
+        "http://not-a-secure-url.example"));
+    },
+    'hasTrustToken requires a secure URL as its issuer argument.');
+
+  promise_test((t) => {
+      return promise_rejects_js(t, TypeError, document.hasTrustToken(
+        "file:///"));
+    },
+    'hasTrustToken requires a HTTP(S) URL as its issuer argument.');
+
+  // These hasTrustToken calls all affect global state: each call in the form
+  // of hasTrustToken(issuer) will result in |issuer| becoming associated in
+  // persistent storage with the calling top frame's origin.
+  //
+  // TODO(davidvc, crbug.com/1061764): Add a way to reset the global state after
+  // the test concludes.
+  //
+  // TODO(davidvc, crbug.com/1063140): Once it's possible to write WPTs that
+  // result in a trust token being deposited in storage, this should be
+  // expanded to cover the case where the user _does_ have a token.
+  promise_test(async (t) => {
+      let result = await document.hasTrustToken("https://issuer.example/");
+      assert_false(result, "The client should not possess any trust tokens for " +
+        "https://issuer.example since it has not executed an issuance operation" +
+        " against that issuer.");
+
+      result = await document.hasTrustToken("https://issuer2.example/");
+      assert_false(result, "The client should not possess any trust tokens for" +
+        " https://issuer2.example since it has not executed an issuance " +
+        "operation against that issuer.");
+
+      await promise_rejects_dom(t, "OperationError", document.hasTrustToken(
+          "https://issuer3.example/"),
+        "The first two hasTrustToken operations associated this top-level" +
+        " origin with the maximum number of issuers (2), so an attempt to " +
+        " execute hasTrustToken against another issuer should fail.");
+
+      result = await document.hasTrustToken("https://issuer2.example/");
+      assert_false(result, "Since this top-level origin is already associated " +
+        "with https://issuer2.example, subsequent hasTrustToken operations should " +
+        "not error out even though the top-level origin is at its " +
+        "number-of-issuers limit.");
+    }, "When given a valid, secure origin, hasTrustToken should succeed " +
+    "unless associating that origin with the top-level domain would exceed " +
+    "the top-level origin's number-of-associated-issuers limit.");
+</script>