From fa3a407699a04d2ac4b26e0b32c25556236d937d Mon Sep 17 00:00:00 2001
From: WPT Sync Bot <josh+wptsync@joshmatthews.net>
Date: Tue, 8 Dec 2020 08:19:34 +0000
Subject: [PATCH] Update web-platform-tests to revision
 431d16dc58b4e276add7d569cce302d8d246b299

---
 .../url/url-in-tags-revoke.window.js.ini      |   2 +-
 .../CSS2/floats/hit-test-floats-004.html.ini  |   4 -
 .../CSS2/floats/hit-test-floats-005.html.ini  |   4 +
 .../border-image-slice-005.htm.ini            |   2 -
 .../border-image-slice-007.htm.ini            |   2 -
 .../svg-image-orientation-none.html.ini       |   2 -
 .../svg-image-orientation.html.ini            |   2 -
 .../text-decoration-thickness-single.html.ini |   2 +
 ...erspective-transforms-equivalence.html.ini |   2 -
 .../transform-scale-hittest.html.ini          |   3 -
 .../cssom-view/elementFromPosition.html.ini   |   3 -
 .../elementsFromPoint-iframes.html.ini        |   3 +
 .../css/cssom/flex-serialization.html.ini     |   4 +
 .../fetch/content-type/response.window.js.ini |  18 +-
 .../fetch/content-type/script.window.js.ini   |   3 -
 .../nosniff/parsing-nosniff.window.js.ini     |   3 -
 .../traverse_the_history_4.html.ini           |   4 -
 .../traverse_the_history_5.html.ini           |   4 -
 ...ross-origin-objects-on-new-window.html.ini |   2 -
 .../embedded-opener-remove-frame.html.ini     |   3 -
 .../iframe_sandbox_popups_escaping-3.html.ini |   3 +-
 ...rame_sandbox_popups_nonescaping-1.html.ini |   2 +-
 ...rame_sandbox_popups_nonescaping-3.html.ini |   1 +
 .../form-double-submit-3.html.ini             |   4 -
 .../form-double-submit.html.ini               |   4 -
 .../ignore-opens-during-unload.window.js.ini  |   2 +-
 ...le-event-handler-settings-objects.html.ini |   3 -
 .../sub-sample-buffer-stitching.html.ini      |   6 +
 ...sor-param-getter-overridden.https.html.ini |   7 +
 .../webmessaging/with-ports/018.html.ini      |   5 +
 .../webmessaging/without-ports/017.html.ini   |   5 +
 .../url/url-in-tags-revoke.window.js.ini      |   2 +-
 tests/wpt/metadata/MANIFEST.json              | 628 +++++++++++++-----
 .../CSS2/floats/hit-test-floats-004.html.ini  |   4 -
 .../CSS2/floats/hit-test-floats-005.html.ini  |   4 +
 .../border-image-slice-005.htm.ini            |   2 -
 .../border-image-slice-007.htm.ini            |   2 -
 ...on-from-image-composited-dynamic2.html.ini |   2 -
 ...e-orientation-from-image-dynamic2.html.ini |   2 -
 ...e-orientation-none-content-images.html.ini |   2 -
 .../image-orientation-none.html.ini           |   2 -
 .../svg-image-orientation-none.html.ini       |   2 -
 .../svg-image-orientation.html.ini            |   2 -
 .../text-decoration-thickness-single.html.ini |   2 +
 ...erspective-transforms-equivalence.html.ini |   2 -
 .../transform-scale-hittest.html.ini          |   3 -
 .../cssom-view/elementFromPosition.html.ini   |   3 -
 .../elementsFromPoint-iframes.html.ini        |   3 +
 .../css/cssom/flex-serialization.html.ini     |   4 +
 .../fetch/content-type/response.window.js.ini |  18 +-
 .../fetch/content-type/script.window.js.ini   |   3 -
 .../nosniff/parsing-nosniff.window.js.ini     |   3 -
 .../traverse_the_history_4.html.ini           |   4 -
 .../traverse_the_history_5.html.ini           |   4 -
 ...ross-origin-objects-on-new-window.html.ini |   2 -
 .../embedded-opener-remove-frame.html.ini     |   3 -
 .../iframe_sandbox_popups_escaping-3.html.ini |   3 +-
 ...rame_sandbox_popups_nonescaping-1.html.ini |   2 +-
 ...rame_sandbox_popups_nonescaping-3.html.ini |   1 +
 .../form-double-submit-3.html.ini             |   4 -
 .../form-double-submit.html.ini               |   4 -
 .../ignore-opens-during-unload.window.js.ini  |   2 +-
 ...le-event-handler-settings-objects.html.ini |   3 -
 .../sub-sample-buffer-stitching.html.ini      |   6 +
 ...sor-param-getter-overridden.https.html.ini |   7 +
 .../webmessaging/with-ports/018.html.ini      |   5 +
 .../webmessaging/without-ports/017.html.ini   |   5 +
 .../attachment-local-clipping-color-5.html    |   1 +
 .../attachment-local-clipping-image-5.html    |   1 +
 .../border-image-slice-005.htm                |   1 +
 .../border-image-slice-007.htm                |   1 +
 .../border-radius-clip-001.html               |   2 +
 .../border-radius-clip-002.htm                |   1 +
 .../reference/widows-orphans-008-ref.html     |  37 ++
 .../reference/widows-orphans-009-ref.html     |  37 ++
 .../reference/widows-orphans-010-ref.html     |  37 ++
 .../reference/widows-orphans-011-ref.html     |  37 ++
 .../reference/widows-orphans-012-ref.html     |  37 ++
 .../reference/widows-orphans-013-ref.html     |  37 ++
 .../reference/widows-orphans-014-ref.html     |  37 ++
 .../reference/widows-orphans-016-ref.html     |  37 ++
 .../reference/widows-orphans-017-ref.html     |  26 +
 .../css/css-break/widows-orphans-008.html     |  65 ++
 .../css/css-break/widows-orphans-009.html     |  65 ++
 .../css/css-break/widows-orphans-010.html     |  65 ++
 .../css/css-break/widows-orphans-011.html     |  64 ++
 .../css/css-break/widows-orphans-012.html     |  65 ++
 .../css/css-break/widows-orphans-013.html     |  63 ++
 .../css/css-break/widows-orphans-014.html     |  63 ++
 .../css/css-break/widows-orphans-015.html     |  65 ++
 .../css/css-break/widows-orphans-016.html     |  65 ++
 .../css/css-break/widows-orphans-017.html     |  53 ++
 ...nment-non-static-positioned-items-009.html |   5 +-
 ...nment-non-static-positioned-items-010.html |   5 +-
 ...nment-non-static-positioned-items-011.html |  31 +-
 ...nment-non-static-positioned-items-012.html |  33 +-
 .../image-orientation-background-image.html   |   2 +-
 ...image-orientation-background-position.html |   2 +-
 .../image-orientation-default.html            |   4 +-
 ...tation-from-image-composited-dynamic1.html |   2 +-
 ...tation-from-image-composited-dynamic2.html |   2 +-
 ...age-orientation-from-image-composited.html |   2 +-
 ...orientation-from-image-content-images.html |   2 +-
 ...image-orientation-from-image-dynamic1.html |   2 +-
 ...image-orientation-from-image-dynamic2.html |   2 +-
 ...ientation-from-image-embedded-content.html |   4 +-
 .../image-orientation-from-image.html         |   2 +-
 .../image-orientation-list-style-image.html   |   2 +-
 ...image-orientation-none-content-images.html |   2 +-
 ...image-orientation-none-image-document.html |   2 +-
 .../image-orientation-none.html               |   2 +-
 .../svg-image-orientation-none.html           |   4 +-
 .../svg-image-orientation.html                |   4 +-
 ...-containing-block-outside-spanner-ref.html |   4 +
 ...spos-containing-block-outside-spanner.html |  15 +
 ...xt-decoration-thickness-single-notref.html |  21 +
 .../text-decoration-thickness-single.html     |  25 +
 .../perspective-transforms-equivalence.html   |   2 +-
 .../css/cssom/flex-serialization.html         |  29 +
 ...002-manual.html => focus-visible-002.html} |  12 +-
 ...ture-propagation-to-auxiliary-context.html |  71 --
 .../resources/helper.js                       | 118 ----
 .../resources/opened_window.html              |   5 -
 .../resources/opened_window.js                |   9 -
 .../resources/window_opener.html              |   5 -
 .../resources/window_opener.js                |  22 -
 .../sandbox-policies-in-allow-attribute.html  |  64 --
 .../drawImage-with-src-rect.tentative.html    |   4 +-
 .../fieldset-containing-block-ref.html        |   6 +-
 .../fieldset-containing-block.html            |  22 +
 .../selection-not-application-textarea.html   |   9 +-
 .../selection-not-application.html            |  12 +-
 .../selection-start-end.html                  |  25 +
 tests/wpt/web-platform-tests/lint.ignore      |   4 +-
 .../serialPort_loopback-manual.https.html     |  84 ---
 ...Port_loopback_BreakError-manual.https.html |  55 ++
 ...pback_BufferOverrunError-manual.https.html |  65 ++
 .../resources/generate-test-wbns.sh           |   9 +
 .../resources/nested/nested-sub.wbn           | Bin 0 -> 592 bytes
 .../web-bundle/resources/wbn/nested-main.wbn  | Bin 0 -> 1139 bytes
 ...ource-loading-nested-bundle.tentative.html |  46 ++
 ...ocessor-param-getter-overridden.https.html |  59 ++
 .../invalid-param-array-processor.js          |  47 ++
 .../rendering/draw-buffers.html.ini           |   3 +
 144 files changed, 2039 insertions(+), 755 deletions(-)
 delete mode 100644 tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/css/css-backgrounds/border-image-slice-005.htm.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/css/css-backgrounds/border-image-slice-007.htm.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/css/css-images/image-orientation/svg-image-orientation-none.html.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/css/css-images/image-orientation/svg-image-orientation.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/css-text-decor/text-decoration-thickness-single.html.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/css/css-transforms/perspective-transforms-equivalence.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/cssom/flex-serialization.html.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/html/semantics/forms/form-submission-0/form-double-submit-3.html.ini
 delete mode 100644 tests/wpt/metadata-layout-2020/html/semantics/forms/form-submission-0/form-double-submit.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/webmessaging/without-ports/017.html.ini
 delete mode 100644 tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
 create mode 100644 tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-backgrounds/border-image-slice-005.htm.ini
 delete mode 100644 tests/wpt/metadata/css/css-backgrounds/border-image-slice-007.htm.ini
 delete mode 100644 tests/wpt/metadata/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic2.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-images/image-orientation/image-orientation-from-image-dynamic2.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-images/image-orientation/image-orientation-none-content-images.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-images/image-orientation/image-orientation-none.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-images/image-orientation/svg-image-orientation-none.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-images/image-orientation/svg-image-orientation.html.ini
 create mode 100644 tests/wpt/metadata/css/css-text-decor/text-decoration-thickness-single.html.ini
 delete mode 100644 tests/wpt/metadata/css/css-transforms/perspective-transforms-equivalence.html.ini
 create mode 100644 tests/wpt/metadata/css/cssom/flex-serialization.html.ini
 delete mode 100644 tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
 delete mode 100644 tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
 delete mode 100644 tests/wpt/metadata/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
 delete mode 100644 tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit-3.html.ini
 delete mode 100644 tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit.html.ini
 create mode 100644 tests/wpt/metadata/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html.ini
 create mode 100644 tests/wpt/metadata/webmessaging/with-ports/018.html.ini
 create mode 100644 tests/wpt/metadata/webmessaging/without-ports/017.html.ini
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-008-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-009-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-010-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-011-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-012-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-013-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-014-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-016-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-017-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-008.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-009.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-010.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-011.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-012.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-013.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-014.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-015.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-016.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-break/widows-orphans-017.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-multicol/abspos-containing-block-outside-spanner-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-multicol/abspos-containing-block-outside-spanner.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text-decor/reference/text-decoration-thickness-single-notref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-text-decor/text-decoration-thickness-single.html
 create mode 100644 tests/wpt/web-platform-tests/css/cssom/flex-serialization.html
 rename tests/wpt/web-platform-tests/css/selectors/{focus-visible-002-manual.html => focus-visible-002.html} (89%)
 delete mode 100644 tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/feature-propagation-to-auxiliary-context.html
 delete mode 100644 tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/helper.js
 delete mode 100644 tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/opened_window.html
 delete mode 100644 tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/opened_window.js
 delete mode 100644 tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/window_opener.html
 delete mode 100644 tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/window_opener.js
 delete mode 100644 tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/sandbox-policies-in-allow-attribute.html
 create mode 100644 tests/wpt/web-platform-tests/serial/serialPort_loopback_BreakError-manual.https.html
 create mode 100644 tests/wpt/web-platform-tests/serial/serialPort_loopback_BufferOverrunError-manual.https.html
 create mode 100644 tests/wpt/web-platform-tests/web-bundle/resources/nested/nested-sub.wbn
 create mode 100644 tests/wpt/web-platform-tests/web-bundle/resources/wbn/nested-main.wbn
 create mode 100644 tests/wpt/web-platform-tests/web-bundle/subresource-loading/subresource-loading-nested-bundle.tentative.html
 create mode 100644 tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html
 create mode 100644 tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js

diff --git a/tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini b/tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini
index 76b44d9e9cf..3605e8f3fc9 100644
--- a/tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini
@@ -4,7 +4,7 @@
     expected: TIMEOUT
 
   [Opening a blob URL in a new window immediately before revoking it works.]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Fetching a blob URL immediately before revoking it works in an iframe.]
     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-004.html.ini
deleted file mode 100644
index 4bfb0c2053a..00000000000
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-004.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-backgrounds/border-image-slice-005.htm.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-image-slice-005.htm.ini
deleted file mode 100644
index df5cf5244c0..00000000000
--- a/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-image-slice-005.htm.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[border-image-slice-005.htm]
-  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-image-slice-007.htm.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-image-slice-007.htm.ini
deleted file mode 100644
index 2670f31ca12..00000000000
--- a/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-image-slice-007.htm.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[border-image-slice-007.htm]
-  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-images/image-orientation/svg-image-orientation-none.html.ini b/tests/wpt/metadata-layout-2020/css/css-images/image-orientation/svg-image-orientation-none.html.ini
deleted file mode 100644
index 6f19466fb16..00000000000
--- a/tests/wpt/metadata-layout-2020/css/css-images/image-orientation/svg-image-orientation-none.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[svg-image-orientation-none.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-images/image-orientation/svg-image-orientation.html.ini b/tests/wpt/metadata-layout-2020/css/css-images/image-orientation/svg-image-orientation.html.ini
deleted file mode 100644
index 9e4d35bad36..00000000000
--- a/tests/wpt/metadata-layout-2020/css/css-images/image-orientation/svg-image-orientation.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[svg-image-orientation.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-text-decor/text-decoration-thickness-single.html.ini b/tests/wpt/metadata-layout-2020/css/css-text-decor/text-decoration-thickness-single.html.ini
new file mode 100644
index 00000000000..545045c98e9
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-text-decor/text-decoration-thickness-single.html.ini
@@ -0,0 +1,2 @@
+[text-decoration-thickness-single.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-transforms/perspective-transforms-equivalence.html.ini b/tests/wpt/metadata-layout-2020/css/css-transforms/perspective-transforms-equivalence.html.ini
deleted file mode 100644
index 49b7aea325b..00000000000
--- a/tests/wpt/metadata-layout-2020/css/css-transforms/perspective-transforms-equivalence.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[perspective-transforms-equivalence.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini b/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
index f8e7e539aae..4a1e8110f6f 100644
--- a/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
@@ -2,6 +2,3 @@
   [Hit test intersecting scaled box]
     expected: FAIL
 
-  [Hit test within unscaled box]
-    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 23c61ede1a1..c131078eace 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
@@ -17,6 +17,3 @@
   [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/cssom-view/elementsFromPoint-iframes.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-iframes.html.ini
index 171592fc08f..6ef8bb1049f 100644
--- a/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-iframes.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-iframes.html.ini
@@ -2,3 +2,6 @@
   [elementsFromPoint on the root document for points in iframe elements]
     expected: FAIL
 
+  [elementsFromPoint on inner documents]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/cssom/flex-serialization.html.ini b/tests/wpt/metadata-layout-2020/css/cssom/flex-serialization.html.ini
new file mode 100644
index 00000000000..621ae91ce8d
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/cssom/flex-serialization.html.ini
@@ -0,0 +1,4 @@
+[flex-serialization.html]
+  [CSSOM - Flex serialization]
+    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 13b7fd49451..a4bf3bc1094 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
@@ -309,30 +309,18 @@
   [Response: combined response Content-Type: text/html;" \\" text/plain ";charset=GBK]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;" text/plain]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html */*]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html */*]
+  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/plain */*]
+  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/plain;charset=gbk text/html]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
+  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
     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 d2df9b78483..e67f0406fc3 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
@@ -53,6 +53,3 @@
   [combined text/javascript ]
     expected: FAIL
 
-  [separate text/javascript x/x]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
index 70efd28ddfc..30e1b851fd4 100644
--- a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,6 +11,3 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
-  [X-Content-Type-Options%3A%20no%0D%0AX-Content-Type-Options%3A%20nosniff]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
deleted file mode 100644
index 385376c7321..00000000000
--- a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_4.html]
-  [Multiple history traversals, last would be aborted]
-    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-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
deleted file mode 100644
index dc2e45516de..00000000000
--- a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_5.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
deleted file mode 100644
index 735a9a75a2a..00000000000
--- a/tests/wpt/metadata-layout-2020/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[cross-origin-objects-on-new-window.html]
-  expected: TIMEOUT
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/windows/embedded-opener-remove-frame.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/windows/embedded-opener-remove-frame.html.ini
index 9a85a905394..b91c29e0274 100644
--- a/tests/wpt/metadata-layout-2020/html/browsers/windows/embedded-opener-remove-frame.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/browsers/windows/embedded-opener-remove-frame.html.ini
@@ -2,6 +2,3 @@
   [opener of discarded nested browsing context]
     expected: FAIL
 
-  [opener of discarded auxiliary browsing context]
-    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 338d283eb0e..295031c1812 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
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_escaping-3.html]
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index d913fcbb129..3080be9afc0 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_nonescaping-1.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
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..7d2b5231af2 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: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/forms/form-submission-0/form-double-submit-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/forms/form-submission-0/form-double-submit-3.html.ini
deleted file mode 100644
index 9f416703229..00000000000
--- a/tests/wpt/metadata-layout-2020/html/semantics/forms/form-submission-0/form-double-submit-3.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[form-double-submit-3.html]
-  [<button> should have the same double-submit protection as <input type=submit>]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/forms/form-submission-0/form-double-submit.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/forms/form-submission-0/form-double-submit.html.ini
deleted file mode 100644
index b193c33c2b6..00000000000
--- a/tests/wpt/metadata-layout-2020/html/semantics/forms/form-submission-0/form-double-submit.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[form-double-submit.html]
-  [default submit action should supersede onclick submit()]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/ignore-opens-during-unload.window.js.ini b/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/ignore-opens-during-unload.window.js.ini
index 58c9d7f8c0c..57744023f73 100644
--- a/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/ignore-opens-during-unload.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/ignore-opens-during-unload.window.js.ini
@@ -1,5 +1,5 @@
 [ignore-opens-during-unload.window.html]
-  expected: TIMEOUT
+  expected: CRASH
   [document.open should bail out when ignore-opens-during-unload is greater than 0 during visibilitychange event (open(parent) while unloading parent and child)]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
index 450c88bd32b..dbec6f2c2ff 100644
--- a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
@@ -3,6 +3,3 @@
   [The incumbent settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
     expected: TIMEOUT
 
-  [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
-    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 389a7f53739..1434a9f2164 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
@@ -368,3 +368,9 @@
   [X Stitched sine-wave buffers at sample rate 43800 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":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[28696\]\t5.0049244262884152e-13\t9.3139332532882690e-1\t9.3139332532832642e-1\t9.9999999999946265e-1\t3.8985999999999999e-3\n\t[28697\]\t7.0477002859115601e-1\t9.0675884485244751e-1\t2.0198881626129150e-1\t2.2275913536212616e-1\t3.8985999999999999e-3\n\tMax AbsError of 9.3139332532832642e-1 at index of 28696.\n\tMax RelError of 9.9999999999946265e-1 at index of 28696.\n]
     expected: FAIL
 
+  [X Stitched sine-wave buffers at sample rate 43800 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":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[28696\]\t-5.5035036802291870e-1\t9.3139332532882690e-1\t1.4817436933517456e+0\t1.5908893193201898e+0\t3.8985999999999999e-3\n\t[28697\]\t7.0477002859115601e-1\t9.0675884485244751e-1\t2.0198881626129150e-1\t2.2275913536212616e-1\t3.8985999999999999e-3\n\tMax AbsError of 1.4817436933517456e+0 at index of 28696.\n\tMax RelError of 1.5908893193201898e+0 at index of 28696.\n]
+    expected: FAIL
+
+  [X SNR (39.927354911150644 dB) is not greater than or equal to 65.737. Got 39.927354911150644.]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html.ini
new file mode 100644
index 00000000000..d6820a19dd0
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html.ini
@@ -0,0 +1,7 @@
+[audioworkletprocessor-param-getter-overridden.https.html]
+  [Executing "Verifying AudioParam in AudioWorkletNode"]
+    expected: FAIL
+
+  [Executing "Initializing AudioWorklet and Context"]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini
new file mode 100644
index 00000000000..663a1f8fa30
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini
@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata-layout-2020/webmessaging/without-ports/017.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/without-ports/017.html.ini
new file mode 100644
index 00000000000..064cf47545b
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webmessaging/without-ports/017.html.ini
@@ -0,0 +1,5 @@
+[017.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, about:blank]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini b/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
index d4f62ed7113..faa00f45ecf 100644
--- a/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
+++ b/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
@@ -7,7 +7,7 @@
     expected: FAIL
 
   [Opening a blob URL in a new window immediately before revoking it works.]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Opening a blob URL in a noopener about:blank window immediately before revoking it works.]
     expected: TIMEOUT
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 21cbcdc6e03..9518cfee588 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -14091,13 +14091,6 @@
      ]
     },
     "selectors": {
-     "focus-visible-002-manual.html": [
-      "f86082df8b8988e94cc2fb5ca8705b59251d2908",
-      [
-       null,
-       {}
-      ]
-     ],
      "focus-visible-006-manual.html": [
       "974abc0024e3153008e944ff706156efcb9948e2",
       [
@@ -18503,7 +18496,21 @@
      ]
     ],
     "serialPort_loopback-manual.https.html": [
-     "9e7801d8332f13aff063f6267f645be6ba837529",
+     "201a2dedba82a30fc5450728a6d9bb6bcdc164a0",
+     [
+      null,
+      {}
+     ]
+    ],
+    "serialPort_loopback_BreakError-manual.https.html": [
+     "22b15316e266e7c69262b96937694c2e016859a6",
+     [
+      null,
+      {}
+     ]
+    ],
+    "serialPort_loopback_BufferOverrunError-manual.https.html": [
+     "e90a5b01613c8a145168cdc0ac5f2094909b2301",
      [
       null,
       {}
@@ -121743,7 +121750,7 @@
        ]
       ],
       "attachment-local-clipping-color-5.html": [
-       "7b27a040d53cb44f8034e086bcf250f916d50b5b",
+       "136b704bd699934a0dc206c3847546ee9185a793",
        [
         null,
         [
@@ -121752,7 +121759,23 @@
           "=="
          ]
         ],
-        {}
+        {
+         "fuzzy": [
+          [
+           null,
+           [
+            [
+             0,
+             10
+            ],
+            [
+             0,
+             160
+            ]
+           ]
+          ]
+         ]
+        }
        ]
       ],
       "attachment-local-clipping-color-6.html": [
@@ -121821,7 +121844,7 @@
        ]
       ],
       "attachment-local-clipping-image-5.html": [
-       "376c9cd4c0f4dd2d7e1274feb82029ae47d3d0c6",
+       "ddd02dcfaefdd805188b1b9682f2070d6f81a976",
        [
         null,
         [
@@ -121830,7 +121853,23 @@
           "=="
          ]
         ],
-        {}
+        {
+         "fuzzy": [
+          [
+           null,
+           [
+            [
+             0,
+             10
+            ],
+            [
+             0,
+             160
+            ]
+           ]
+          ]
+         ]
+        }
        ]
       ],
       "attachment-local-clipping-image-6.html": [
@@ -126434,7 +126473,7 @@
       ]
      ],
      "border-image-slice-005.htm": [
-      "1a09732b6dc96ce4c0d5a47b03f7de1fea1c3d45",
+      "e85c1a141d64e87e868ece80c3f0a35c87c97ae5",
       [
        null,
        [
@@ -126443,11 +126482,27 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            35
+           ],
+           [
+            0,
+            1250
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "border-image-slice-007.htm": [
-      "e852867b10ea39c74f159b272ddad3cabb7f3f7c",
+      "0243b8e22e631b6b85262106f0d5e762306eb925",
       [
        null,
        [
@@ -126456,7 +126511,23 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            35
+           ],
+           [
+            0,
+            1250
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "border-image-slice-percentage.html": [
@@ -126694,7 +126765,7 @@
       ]
      ],
      "border-radius-clip-001.html": [
-      "585b62677f4c439deb077a5ab4aba96559366c72",
+      "008ca7367f20b51c55460f8cffa6f85be83d4988",
       [
        null,
        [
@@ -126703,11 +126774,27 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            1
+           ],
+           [
+            0,
+            1000
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "border-radius-clip-002.htm": [
-      "e81871ee50c4498c3ed3a63672725e2e395b5281",
+      "759bd5ce4836899512fe8b435a18bd1aad78cfc2",
       [
        null,
        [
@@ -126716,7 +126803,23 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            70
+           ],
+           [
+            0,
+            50
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "border-radius-clipping-002.html": [
@@ -128752,6 +128855,136 @@
        ],
        {}
       ]
+     ],
+     "widows-orphans-008.html": [
+      "8726e35a7035b834b0676c09dd7d24dd8cecbca8",
+      [
+       null,
+       [
+        [
+         "/css/css-break/reference/widows-orphans-008-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "widows-orphans-009.html": [
+      "2c1fc1b888d55e5e106c7f85e1d9d8902e25dc51",
+      [
+       null,
+       [
+        [
+         "/css/css-break/reference/widows-orphans-009-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "widows-orphans-010.html": [
+      "96de985527c6003e6598c632d38f0ec2828e54a0",
+      [
+       null,
+       [
+        [
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     },
-    "feature-policy-for-sandbox": {
-     "feature-propagation-to-auxiliary-context.html": [
-      "86cdcb3b42702fe3d6dedfe13ddae348c3dd32e6",
-      [
-       null,
-       {}
-      ]
-     ],
-     "sandbox-policies-in-allow-attribute.html": [
-      "c9e2d7119382882a663b3f25a0ba70b581ec9b5d",
-      [
-       null,
-       {}
-      ]
-     ]
-    },
     "feature-policy-frame-policy-allowed-for-all.https.sub.html": [
      "63cd9853dcedac46bff5ddb1554d519ed4a64c23",
      [
@@ -485684,14 +485978,14 @@
         ]
        ],
        "selection-not-application-textarea.html": [
-        "3116cd93523ff9c70879603078e7070762da37a4",
+        "e8e82791880e163f513cf64d5df3049e6c7c3b15",
         [
          null,
          {}
         ]
        ],
        "selection-not-application.html": [
-        "a7d7f1c5518551436b6b4845d0ce205cf3721cfc",
+        "aa98a030a83b8b9506c8e04dc945e022f11073ee",
         [
          null,
          {}
@@ -485705,7 +485999,7 @@
         ]
        ],
        "selection-start-end.html": [
-        "4bcecf234cc042c7d1496f1a814187cdb5386f77",
+        "919d1a4d658367ef845c584d470db0e98509a584",
         [
          null,
          {}
@@ -544509,6 +544803,13 @@
        {}
       ]
      ],
+     "subresource-loading-nested-bundle.tentative.html": [
+      "acca096bfbda306edc42a0deaef434b34ddd509b",
+      [
+       null,
+       {}
+      ]
+     ],
      "subresource-loading-path-restriction.tentative.html": [
       "706bfb97b1142833380024c3f969b1b3b2756ec1",
       [
@@ -546641,6 +546942,13 @@
         {}
        ]
       ],
+      "audioworkletprocessor-param-getter-overridden.https.html": [
+       "e3fb6e533df8ccaa88564f836239e0c9e9c1d5e4",
+       [
+        null,
+        {}
+       ]
+      ],
       "audioworkletprocessor-process-frozen-array.https.html": [
        "33627204a6f538eba77bd8346952404814e4affa",
        [
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-004.html.ini
deleted file mode 100644
index 4bfb0c2053a..00000000000
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-004.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-backgrounds/border-image-slice-005.htm.ini b/tests/wpt/metadata/css/css-backgrounds/border-image-slice-005.htm.ini
deleted file mode 100644
index df5cf5244c0..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/border-image-slice-005.htm.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[border-image-slice-005.htm]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/border-image-slice-007.htm.ini b/tests/wpt/metadata/css/css-backgrounds/border-image-slice-007.htm.ini
deleted file mode 100644
index 2670f31ca12..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/border-image-slice-007.htm.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[border-image-slice-007.htm]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic2.html.ini b/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic2.html.ini
deleted file mode 100644
index 5394b8fab7b..00000000000
--- a/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic2.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[image-orientation-from-image-composited-dynamic2.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-from-image-dynamic2.html.ini b/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-from-image-dynamic2.html.ini
deleted file mode 100644
index f7ee1605d04..00000000000
--- a/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-from-image-dynamic2.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[image-orientation-from-image-dynamic2.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-none-content-images.html.ini b/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-none-content-images.html.ini
deleted file mode 100644
index 8545087eb40..00000000000
--- a/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-none-content-images.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[image-orientation-none-content-images.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-none.html.ini b/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-none.html.ini
deleted file mode 100644
index 262691575b2..00000000000
--- a/tests/wpt/metadata/css/css-images/image-orientation/image-orientation-none.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[image-orientation-none.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-images/image-orientation/svg-image-orientation-none.html.ini b/tests/wpt/metadata/css/css-images/image-orientation/svg-image-orientation-none.html.ini
deleted file mode 100644
index 6f19466fb16..00000000000
--- a/tests/wpt/metadata/css/css-images/image-orientation/svg-image-orientation-none.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[svg-image-orientation-none.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-images/image-orientation/svg-image-orientation.html.ini b/tests/wpt/metadata/css/css-images/image-orientation/svg-image-orientation.html.ini
deleted file mode 100644
index 9e4d35bad36..00000000000
--- a/tests/wpt/metadata/css/css-images/image-orientation/svg-image-orientation.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[svg-image-orientation.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-text-decor/text-decoration-thickness-single.html.ini b/tests/wpt/metadata/css/css-text-decor/text-decoration-thickness-single.html.ini
new file mode 100644
index 00000000000..545045c98e9
--- /dev/null
+++ b/tests/wpt/metadata/css/css-text-decor/text-decoration-thickness-single.html.ini
@@ -0,0 +1,2 @@
+[text-decoration-thickness-single.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-transforms/perspective-transforms-equivalence.html.ini b/tests/wpt/metadata/css/css-transforms/perspective-transforms-equivalence.html.ini
deleted file mode 100644
index 49b7aea325b..00000000000
--- a/tests/wpt/metadata/css/css-transforms/perspective-transforms-equivalence.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[perspective-transforms-equivalence.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini b/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
index f8e7e539aae..4a1e8110f6f 100644
--- a/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
+++ b/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
@@ -2,6 +2,3 @@
   [Hit test intersecting scaled box]
     expected: FAIL
 
-  [Hit test within unscaled box]
-    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 5733d536fd3..85e94926cb3 100644
--- a/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini
+++ b/tests/wpt/metadata/css/cssom-view/elementFromPosition.html.ini
@@ -21,6 +21,3 @@
   [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/cssom-view/elementsFromPoint-iframes.html.ini b/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini
index 171592fc08f..6ef8bb1049f 100644
--- a/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini
+++ b/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini
@@ -2,3 +2,6 @@
   [elementsFromPoint on the root document for points in iframe elements]
     expected: FAIL
 
+  [elementsFromPoint on inner documents]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/cssom/flex-serialization.html.ini b/tests/wpt/metadata/css/cssom/flex-serialization.html.ini
new file mode 100644
index 00000000000..621ae91ce8d
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom/flex-serialization.html.ini
@@ -0,0 +1,4 @@
+[flex-serialization.html]
+  [CSSOM - Flex serialization]
+    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 2e0ee10b019..9fd554c348a 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -309,30 +309,18 @@
   [fetch(): separate response Content-Type: text/plain ]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;" text/plain]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html */*]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html */*]
+  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/plain */*]
+  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/plain;charset=gbk text/html]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
+  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
     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 d2df9b78483..e67f0406fc3 100644
--- a/tests/wpt/metadata/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
@@ -53,6 +53,3 @@
   [combined text/javascript ]
     expected: FAIL
 
-  [separate text/javascript x/x]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index 70efd28ddfc..30e1b851fd4 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,6 +11,3 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
-  [X-Content-Type-Options%3A%20no%0D%0AX-Content-Type-Options%3A%20nosniff]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
deleted file mode 100644
index 385376c7321..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_4.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
deleted file mode 100644
index dc2e45516de..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_5.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini b/tests/wpt/metadata/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
deleted file mode 100644
index 735a9a75a2a..00000000000
--- a/tests/wpt/metadata/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[cross-origin-objects-on-new-window.html]
-  expected: TIMEOUT
diff --git a/tests/wpt/metadata/html/browsers/windows/embedded-opener-remove-frame.html.ini b/tests/wpt/metadata/html/browsers/windows/embedded-opener-remove-frame.html.ini
index 442db3cb549..49b12655f9a 100644
--- a/tests/wpt/metadata/html/browsers/windows/embedded-opener-remove-frame.html.ini
+++ b/tests/wpt/metadata/html/browsers/windows/embedded-opener-remove-frame.html.ini
@@ -5,6 +5,3 @@
   [opener of discarded nested browsing context]
     expected: FAIL
 
-  [opener of discarded auxiliary browsing context]
-    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 f6a7aca3306..5f60c78e73c 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
@@ -1,5 +1,6 @@
 [iframe_sandbox_popups_escaping-3.html]
   type: testharness
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index 9df1ac56f2a..963d4cd20ef 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_nonescaping-1.html]
   type: testharness
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
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 7a36937927c..7d2b5231af2 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
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_nonescaping-3.html]
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit-3.html.ini b/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit-3.html.ini
deleted file mode 100644
index 9f416703229..00000000000
--- a/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit-3.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[form-double-submit-3.html]
-  [<button> should have the same double-submit protection as <input type=submit>]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit.html.ini b/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit.html.ini
deleted file mode 100644
index b193c33c2b6..00000000000
--- a/tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[form-double-submit.html]
-  [default submit action should supersede onclick submit()]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/ignore-opens-during-unload.window.js.ini b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/ignore-opens-during-unload.window.js.ini
index 69bd952d756..910c88d3e81 100644
--- a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/ignore-opens-during-unload.window.js.ini
+++ b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/opening-the-input-stream/ignore-opens-during-unload.window.js.ini
@@ -1,5 +1,5 @@
 [ignore-opens-during-unload.window.html]
-  expected: TIMEOUT
+  expected: CRASH
   [ignore-opens-during-unload]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini b/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
index 01f7b72cbe7..0cef5158fae 100644
--- a/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
+++ b/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
@@ -4,6 +4,3 @@
   [The incumbent settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
     expected: TIMEOUT
 
-  [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
-    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 ef0a84d4f5e..810b01c377d 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
@@ -596,3 +596,9 @@
   [X Stitched sine-wave buffers at sample rate 43800 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":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[28696\]\t5.0049244262884152e-13\t9.3139332532882690e-1\t9.3139332532832642e-1\t9.9999999999946265e-1\t3.8985999999999999e-3\n\t[28697\]\t7.0477002859115601e-1\t9.0675884485244751e-1\t2.0198881626129150e-1\t2.2275913536212616e-1\t3.8985999999999999e-3\n\tMax AbsError of 9.3139332532832642e-1 at index of 28696.\n\tMax RelError of 9.9999999999946265e-1 at index of 28696.\n]
     expected: FAIL
 
+  [X Stitched sine-wave buffers at sample rate 43800 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":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[28696\]\t-5.5035036802291870e-1\t9.3139332532882690e-1\t1.4817436933517456e+0\t1.5908893193201898e+0\t3.8985999999999999e-3\n\t[28697\]\t7.0477002859115601e-1\t9.0675884485244751e-1\t2.0198881626129150e-1\t2.2275913536212616e-1\t3.8985999999999999e-3\n\tMax AbsError of 1.4817436933517456e+0 at index of 28696.\n\tMax RelError of 1.5908893193201898e+0 at index of 28696.\n]
+    expected: FAIL
+
+  [X SNR (39.927354911150644 dB) is not greater than or equal to 65.737. Got 39.927354911150644.]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html.ini
new file mode 100644
index 00000000000..d6820a19dd0
--- /dev/null
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html.ini
@@ -0,0 +1,7 @@
+[audioworkletprocessor-param-getter-overridden.https.html]
+  [Executing "Verifying AudioParam in AudioWorkletNode"]
+    expected: FAIL
+
+  [Executing "Initializing AudioWorklet and Context"]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webmessaging/with-ports/018.html.ini b/tests/wpt/metadata/webmessaging/with-ports/018.html.ini
new file mode 100644
index 00000000000..663a1f8fa30
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/with-ports/018.html.ini
@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/webmessaging/without-ports/017.html.ini b/tests/wpt/metadata/webmessaging/without-ports/017.html.ini
new file mode 100644
index 00000000000..064cf47545b
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/without-ports/017.html.ini
@@ -0,0 +1,5 @@
+[017.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, about:blank]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/background-attachment-local/attachment-local-clipping-color-5.html b/tests/wpt/web-platform-tests/css/css-backgrounds/background-attachment-local/attachment-local-clipping-color-5.html
index 7b27a040d53..136b704bd69 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/background-attachment-local/attachment-local-clipping-color-5.html
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/background-attachment-local/attachment-local-clipping-color-5.html
@@ -2,6 +2,7 @@
 <title>CSS Test: background-{attachment: local; clip: padding-box; color}; border-radius</title>
 <link rel="match" href="attachment-local-clipping-color-4-ref.html" />
 <meta name="flags" content="dom" />
+<meta name=fuzzy content="0-10;0-160">
 <link rel="author" title="Simon Sapin" href="http://exyr.org/about/" />
 <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-attachment" />
 <style>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/background-attachment-local/attachment-local-clipping-image-5.html b/tests/wpt/web-platform-tests/css/css-backgrounds/background-attachment-local/attachment-local-clipping-image-5.html
index 376c9cd4c0f..ddd02dcfaef 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/background-attachment-local/attachment-local-clipping-image-5.html
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/background-attachment-local/attachment-local-clipping-image-5.html
@@ -2,6 +2,7 @@
 <title>CSS Test: background-{attachment: local; clip: padding-box; image}; border-radius</title>
 <link rel="match" href="attachment-local-clipping-image-4-ref.html" />
 <meta name="flags" content="dom" />
+<meta name=fuzzy content="0-10;0-160">
 <link rel="author" title="Simon Sapin" href="http://exyr.org/about/" />
 <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-attachment" />
 <style>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/border-image-slice-005.htm b/tests/wpt/web-platform-tests/css/css-backgrounds/border-image-slice-005.htm
index 1a09732b6dc..e85c1a141d6 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/border-image-slice-005.htm
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/border-image-slice-005.htm
@@ -11,6 +11,7 @@
         <link rel="help" href="http://www.w3.org/TR/css3-background/#the-border-image-slice">
         <link rel="match" href="reference/border-image-slice-005-ref.html">
         <meta name="flags" content="">
+        <meta name="fuzzy" content="0-35;0-1250">
         <meta name="assert" content="This test checks that the border image is sliced into nine regions with inward offsets, '40%' from the top, '30%' from the right,'20%' from the bottom, and '10%' from the left edges of the image. Percentages are relative to the size of the image: the width of the image for the horizontal offsets, the height for vertical offsets.">
         <style>
             div
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/border-image-slice-007.htm b/tests/wpt/web-platform-tests/css/css-backgrounds/border-image-slice-007.htm
index e852867b10e..0243b8e22e6 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/border-image-slice-007.htm
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/border-image-slice-007.htm
@@ -11,6 +11,7 @@
         <link rel="help" href="http://www.w3.org/TR/css3-background/#the-border-image-slice">
         <link rel="match" href="reference/border-image-slice-007-ref.html">
         <meta name="flags" content="">
+        <meta name="fuzzy" content="0-35;0-1250">
         <meta name="assert" content="This test checks that the 'fill' keyword, if present, causes the middle part of the border-image to be preserved.">
         <style>
             div
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.html b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.html
index 585b62677f4..008ca7367f2 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.html
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.html
@@ -12,6 +12,8 @@
 
   <meta name="assert" content="Test passes if a box with border-radius that clips its content to a box edge clips to the border-radius curve in the corners.">
 
+  <meta name="fuzzy" content="0-1;0-1000">
+
   <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
   <style>
   body > div { float: left; }
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-002.htm b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-002.htm
index e81871ee50c..759bd5ce483 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-002.htm
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-002.htm
@@ -7,6 +7,7 @@
         <link rel="match" href="reference/border-radius-clip-002-ref.htm">
         <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#corner-clipping">
         <meta name="assert" content="Background is clipped to the curve of the content-box when 'background-clip: content-box'">
+        <meta name=fuzzy content="0-70;0-50">
         <style type="text/css">
             #test-base
             {
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-008-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-008-ref.html
new file mode 100644
index 00000000000..431d37a4b3c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-008-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 104px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br><br><br>7<br>8<br>9</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br><br><br>7<br>8<br>9</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-009-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-009-ref.html
new file mode 100644
index 00000000000..77e8bd7b46a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-009-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 104px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br><br>8<br>9</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br><br>8<br>9</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-010-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-010-ref.html
new file mode 100644
index 00000000000..431d37a4b3c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-010-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 104px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br><br><br>7<br>8<br>9</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br><br><br>7<br>8<br>9</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-011-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-011-ref.html
new file mode 100644
index 00000000000..8977e4729c7
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-011-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 156px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the numbers inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br><br><br><br><br>9<br>10<br>11<br>12<br>13<br>14</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br><br><br><br><br>9<br>10<br>11<br>12<br>13<br>14</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-012-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-012-ref.html
new file mode 100644
index 00000000000..a03a7993d74
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-012-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 208px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the numbers inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br><br><br><br><br>13<br>14<br>15<br>16<br>17<br>18<br>19</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br><br><br><br><br>13<br>14<br>15<br>16<br>17<br>18<br>19</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-013-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-013-ref.html
new file mode 100644
index 00000000000..7872ac730bf
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-013-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 234px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the numbers inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br>13<br>14<br>15<br><br><br><br>16<br>17<br>18<br>19</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br>13<br>14<br>15<br><br><br><br>16<br>17<br>18<br>19</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-014-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-014-ref.html
new file mode 100644
index 00000000000..795350a0285
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-014-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 234px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br><br><br>8<br>9<br>0</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br><br><br>8<br>9<br>0</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-016-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-016-ref.html
new file mode 100644
index 00000000000..77e8bd7b46a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-016-ref.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 104px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br><br>8<br>9</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7<br><br>8<br>9</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-017-ref.html b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-017-ref.html
new file mode 100644
index 00000000000..0a65a50c29f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/reference/widows-orphans-017-ref.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reftest Reference</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      height: 182px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7</div>
+
+  <div>1<br>2<br>3<br>4<br>5<br>6<br>7</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-008.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-008.html
new file mode 100644
index 00000000000..8726e35a703
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-008.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-008-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="When column boxes are filled sequentially, their content should be distributed and fragmented in accordance with the 'orphans' and the 'widows' declarations. In the test, since the 3rd column box was going to get only 1 line box, then a class B break point should occur between the '6' and the '7' so that there is a minimum of 3 line boxes at the top of the 3rd column box.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 104px; /* Therefore, exactly 4 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 1;
+      widows: 3;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br><br><br>7<br>8<br>9</div>
+
+  <!--     Same as div#test except 2 extra br here   ^    -->
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-009.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-009.html
new file mode 100644
index 00000000000..2c1fc1b888d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-009.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-009-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="When column boxes are filled sequentially, their content should be distributed and fragmented in accordance with the 'orphans' and the 'widows' declarations. In the test, since the 3rd column box was going to get only 1 line box, then a class B break point should occur between the '7' and the '8' so that there is a minimum of 2 line boxes at the top of the 3rd column box. In doing so, the 'orphans: 2' declaration is still honored.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 104px; /* Therefore, exactly 4 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 2;
+      widows: 2;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br>7<br><br>8<br>9</div>
+
+  <!--          Same as div#test except 1 extra br here   ^    -->
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-010.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-010.html
new file mode 100644
index 00000000000..96de985527c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-010.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-010-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="When column boxes are filled sequentially, their content should be distributed and fragmented in accordance with the 'orphans' and the 'widows' declarations. In the test, since the 3rd column box was going to get only 1 line box, then a class B break point should occur between the '6' and the '7' so that there is a minimum of 3 line boxes at the top of the 3rd column box.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 104px; /* Therefore, exactly 4 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 2;
+      widows: 3;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br><br><br>7<br>8<br>9</div>
+
+  <!--     Same as div#test except 2 extra br here   ^    -->
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-011.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-011.html
new file mode 100644
index 00000000000..489e2684309
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-011.html
@@ -0,0 +1,64 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-011-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="When column boxes are filled sequentially, their content should be distributed and fragmented in accordance with the 'orphans' and the 'widows' declarations. In the test, since the 3rd column box was going to get only 2 line boxes, then a class B break point should occur between '8' and the '9' so that there is a minimum of 6 line boxes at the top of the 3rd column box.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 156px; /* Therefore, exactly 6 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 2;
+      widows: 6;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the numbers inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br>13<br>14</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br><br><br><br><br>9<br>10<br>11<br>12<br>13<br>14</div>
+  <!--               Same as div#test except 4 extra br here   ^    -->
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-012.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-012.html
new file mode 100644
index 00000000000..d209cde44a1
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-012.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-012-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="When column boxes are filled sequentially, their content should be distributed and fragmented in accordance with the 'orphans' and the 'widows' declarations. In the test, since the 3rd column box was going to get only 3 line boxes, then a class B break point should occur between the '12' and the '13' so that there is a minimum of 7 line boxes at the top of the 3rd column box.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 208px; /* Therefore, exactly 8 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 3;
+      widows: 7;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the numbers inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br>13<br>14<br>15<br>16<br>17<br>18<br>19</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br><br><br><br><br>13<br>14<br>15<br>16<br>17<br>18<br>19</div>
+
+  <!--                                      Same as div#test except 4 extra br here   ^    -->
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-013.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-013.html
new file mode 100644
index 00000000000..68e0d419306
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-013.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-013-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="When column boxes are filled sequentially, their content should be distributed and fragmented in accordance with the 'orphans' and the 'widows' declarations. In the test, since the 3rd column box was going to get only 1 line box, then a class B break point should occur between the '15' and the '16' so that there is a minimum of 4 line boxes at the top of the 3rd column box. In doing so, the 'orphans: 6' declaration is still honored.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 234px; /* Therefore, exactly 9 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 6;
+      widows: 4;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the numbers inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br>13<br>14<br>15<br>16<br>17<br>18<br>19</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>10<br>11<br>12<br>13<br>14<br>15<br><br><br><br>16<br>17<br>18<br>19</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-014.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-014.html
new file mode 100644
index 00000000000..87a9b877a17
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-014.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-014-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="When column boxes are filled sequentially, their content should be distributed and fragmented in accordance with the 'orphans' and the 'widows' declarations. In the test, since the 3rd column box was going to get only 1 line box, then a class B break point should occur between the '7' and the '8' so that there is a minimum of 3 line boxes at the top of the 3rd column box. In doing so, the 'orphans: 7' declaration is still honored.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 234px; /* Therefore, exactly 9 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 7;
+      widows: 3;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9<br>0</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br>7<br><br><br>8<br>9<br>0</div>
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-015.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-015.html
new file mode 100644
index 00000000000..269279f074a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-015.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: initial 'widows' value and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-016-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="This test checks that 'widows' applies to multi-column containers and that the initial value of 'widows' is '2'. When an UA succeeds at applying 'widows', then there is 2 line boxes at the top of the 3rd column box.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 104px; /* Therefore, exactly 4 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 1;
+      widows: initial;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br>7<br><br>8<br>9</div>
+
+  <!--          Same as div#test except 1 extra br here   ^    -->
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-016.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-016.html
new file mode 100644
index 00000000000..4499a57a0b5
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-016.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and content distribution in columns</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-016-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <!--
+
+  Bug 137367: Implement orphans and widows
+  https://bugzilla.mozilla.org/show_bug.cgi?id=137367
+
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="When column boxes are filled sequentially, their content should be distributed and fragmented in accordance with the 'orphans' and the 'widows' declarations. In the test, since the 3rd column box was going to get only 1 line box, then a class B break point should occur between the '7' and the '8' so that there is a minimum of 2 line boxes at the top of the 3rd column box.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      height: 104px; /* Therefore, exactly 4 line boxes */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+
+      columns: 4 auto;
+
+      column-fill: auto;
+
+      column-gap: 1em; /* computes to 20px */
+
+      column-rule: blue solid 4px;
+    }
+
+  div#test
+    {
+      orphans: 1;
+      widows: 2;
+    }
+
+  div#reference
+    {
+      orphans: 1;
+      widows: 1;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7<br>8<br>9</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br>7<br><br>8<br>9</div>
+
+  <!--          Same as div#test except 1 extra br here   ^    -->
diff --git a/tests/wpt/web-platform-tests/css/css-break/widows-orphans-017.html b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-017.html
new file mode 100644
index 00000000000..bbdbbbbb8bb
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-break/widows-orphans-017.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Fragmentation level 3 Test: 'orphans', 'widows' and auto-height multicolumn container with 'column-fill: auto'</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-break-3/#widows-orphans">
+  <link rel="match" href="reference/widows-orphans-017-ref.html">
+
+  <!--
+  Date created: November 26th 2020
+  Last modified: December 6th 2020
+  -->
+
+  <meta name="flags" content="">
+  <meta name="assert" content="If a multi-column container fills column boxes sequentially and its 'height' is 'auto', then soft breaks are inoperative since content can not overflow the fragmentainer. Therefore, in this test, the 'orphans' and 'widows' requirements can not be honored.">
+
+  <style>
+  div
+    {
+      border: orange solid 4px;
+      font-size: 20px;
+      line-height: 1.3; /* computes to 26px */
+      margin-bottom: 1em;
+      padding: 0.5em; /* computes to 10px */
+      width: 460px;
+    }
+
+  div#test
+    {
+      height: auto;
+
+      columns: 4 auto;
+      column-fill: auto;
+      column-gap: 1em; /* computes to 20px */
+      column-rule: blue solid 4px;
+
+      orphans: 1;
+      widows: 2;
+    }
+
+  div#reference
+    {
+      height: 182px;
+    }
+  </style>
+
+  <p>Test passes if the digits inside both orange-bordered rectangles are <strong>distributed identically</strong>.
+
+  <div id="test">1<br>2<br>3<br>4<br>5<br>6<br>7</div>
+
+  <div id="reference">1<br>2<br>3<br>4<br>5<br>6<br>7</div>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-009.html b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-009.html
index ad2f8b1dc34..4136c44b0d9 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-009.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-009.html
@@ -71,7 +71,6 @@
   setup({ explicit_done: true });
 </script>
 <body onload="document.fonts.ready.then(() => { checkLayout('.grid'); })">
-<!-- The test cases with vertical-rl wirting-mode will fail becauuse of bug 779105 -->
 <div class="grid">
   <div data-offset-x="5"   data-offset-y="0"   data-expected-width="40" data-expected-height="80" class="firstRowFirstColumn verticalLR">X XX X</div>
   <div data-offset-x="180" data-offset-y="60"  data-expected-width="60" data-expected-height="90" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
@@ -83,7 +82,7 @@
   <div data-offset-x="155" data-offset-y="0"   data-expected-width="40" data-expected-height="80" class="firstRowFirstColumn verticalLR">X XX X</div>
   <div data-offset-x="80"  data-offset-y="60"  data-expected-width="60" data-expected-height="90" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
   <div data-offset-x="160" data-offset-y="160" data-expected-width="90" data-expected-height="30" class="secondRowFirstColumn LTR">X XX X</div>
-  <div data-offset-x="35"  data-offset-y="160" data-expected-width="70" data-expected-height="80" class="secondRowSecondColumn verticalRL RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="5"   data-offset-y="160" data-expected-width="70" data-expected-height="80" class="secondRowSecondColumn verticalRL RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 <br><br>
@@ -99,6 +98,6 @@
   <div data-offset-x="105" data-offset-y="70"  data-expected-width="90"  data-expected-height="30" class="firstRowFirstColumn horizontal">X XX X</div>
   <div data-offset-x="140" data-offset-y="150" data-expected-width="100" data-expected-height="50" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
   <div data-offset-x="5"   data-offset-y="10"  data-expected-width="90"  data-expected-height="30" class="secondRowFirstColumn horizontal RTL">X XX X</div>
-  <div data-offset-x="5"   data-offset-y="115" data-expected-width="70"  data-expected-height="80" class="secondRowSecondColumn verticalLR">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="5"   data-offset-y="110" data-expected-width="70"  data-expected-height="80" class="secondRowSecondColumn verticalLR">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 </body>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-010.html b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-010.html
index 856062014d4..86dc3257a60 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-010.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-010.html
@@ -67,7 +67,6 @@
   setup({ explicit_done: true });
 </script>
 <body onload="document.fonts.ready.then(() => { checkLayout('.grid'); })">
-<!-- The test cases with vertical-rl wirting-mode will fail becauuse of bug 779105 -->
 <div class="grid">
   <div data-offset-x="5"   data-offset-y="0"   data-expected-width="40" data-expected-height="80" class="firstRowFirstColumn verticalLR">X XX X</div>
   <div data-offset-x="180" data-offset-y="60"  data-expected-width="60" data-expected-height="90" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
@@ -79,7 +78,7 @@
   <div data-offset-x="155" data-offset-y="0"   data-expected-width="40" data-expected-height="80" class="firstRowFirstColumn verticalLR">X XX X</div>
   <div data-offset-x="80"  data-offset-y="60"  data-expected-width="60" data-expected-height="90" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
   <div data-offset-x="160" data-offset-y="160" data-expected-width="90" data-expected-height="30" class="secondRowFirstColumn LTR">X XX X</div>
-  <div data-offset-x="35"  data-offset-y="160" data-expected-width="70" data-expected-height="80" class="secondRowSecondColumn verticalRL RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="5"   data-offset-y="160" data-expected-width="70" data-expected-height="80" class="secondRowSecondColumn verticalRL RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 <br><br>
@@ -95,6 +94,6 @@
   <div data-offset-x="105" data-offset-y="70"  data-expected-width="90"  data-expected-height="30" class="firstRowFirstColumn horizontal">X XX X</div>
   <div data-offset-x="140" data-offset-y="150" data-expected-width="100" data-expected-height="50" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
   <div data-offset-x="5"   data-offset-y="10"  data-expected-width="90"  data-expected-height="30" class="secondRowFirstColumn horizontal RTL">X XX X</div>
-  <div data-offset-x="5"   data-offset-y="115" data-expected-width="70"  data-expected-height="80" class="secondRowSecondColumn verticalLR">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="5"   data-offset-y="110" data-expected-width="70"  data-expected-height="80" class="secondRowSecondColumn verticalLR">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 </body>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-011.html b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-011.html
index f3a8476ddf9..d12c1826f73 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-011.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-011.html
@@ -73,34 +73,33 @@
   setup({ explicit_done: true });
 </script>
 <body onload="document.fonts.ready.then(() => { checkLayout('.grid'); })">
-<!-- The test cases with vertical-rl wirting-mode will fail becauuse of bug 779105 -->
 <div class="grid">
   <div data-offset-x="13"  data-offset-y="2"   data-expected-width="26" data-expected-height="70" class="firstRowFirstColumn verticalLR">X XX X</div>
-  <div data-offset-x="180" data-offset-y="60"  data-expected-width="46" data-expected-height="80" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
-  <div data-offset-x="0"   data-offset-y="160" data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn RTL">X XX X</div>
-  <div data-offset-x="105" data-offset-y="160" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalLR RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="190" data-offset-y="64"  data-expected-width="46" data-expected-height="80" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
+  <div data-offset-x="8"   data-offset-y="162" data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn RTL">X XX X</div>
+  <div data-offset-x="113" data-offset-y="162" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalLR RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 <div class="grid RTL">
-  <div data-offset-x="155" data-offset-y="0"   data-expected-width="26" data-expected-height="70" class="firstRowFirstColumn verticalLR">X XX X</div>
-  <div data-offset-x="80"  data-offset-y="60"  data-expected-width="46" data-expected-height="80" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
-  <div data-offset-x="160" data-offset-y="160" data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn LTR">X XX X</div>
-  <div data-offset-x="35"  data-offset-y="160" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalRL RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="163" data-offset-y="2"   data-expected-width="26" data-expected-height="70" class="firstRowFirstColumn verticalLR">X XX X</div>
+  <div data-offset-x="90"  data-offset-y="64"  data-expected-width="46" data-expected-height="80" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
+  <div data-offset-x="170" data-offset-y="162" data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn LTR">X XX X</div>
+  <div data-offset-x="13"  data-offset-y="162" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalRL RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 <br><br>
 
 <div class="grid verticalLR">
-  <div data-offset-x="5"   data-offset-y="70"  data-expected-width="76" data-expected-height="20" class="firstRowFirstColumn horizontal">X XX X</div>
-  <div data-offset-x="40"  data-offset-y="150" data-expected-width="86" data-expected-height="40" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
-  <div data-offset-x="180" data-offset-y="10"  data-expected-width="26" data-expected-height="20" class="secondRowFirstColumn verticalRL">X XX X</div>
-  <div data-offset-x="155" data-offset-y="110" data-expected-width="76" data-expected-height="50" class="secondRowSecondColumn horizontal RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="13"  data-offset-y="74"  data-expected-width="76" data-expected-height="20" class="firstRowFirstColumn horizontal">X XX X</div>
+  <div data-offset-x="50"  data-offset-y="153" data-expected-width="86" data-expected-height="40" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
+  <div data-offset-x="189" data-offset-y="12"  data-expected-width="26" data-expected-height="70" class="secondRowFirstColumn verticalRL">X XX X</div>
+  <div data-offset-x="163" data-offset-y="112" data-expected-width="76" data-expected-height="50" class="secondRowSecondColumn horizontal RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 <div class="grid verticalRL">
-  <div data-offset-x="105" data-offset-y="70"  data-expected-width="76" data-expected-height="20" class="firstRowFirstColumn horizontal">X XX X</div>
-  <div data-offset-x="140" data-offset-y="150" data-expected-width="86" data-expected-height="40" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
-  <div data-offset-x="5"   data-offset-y="10"  data-expected-width="76"  data-expected-height="20" class="secondRowFirstColumn horizontal RTL">X XX X</div>
-  <div data-offset-x="5"   data-offset-y="115" data-expected-width="56"  data-expected-height="70" class="secondRowSecondColumn verticalLR">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="113" data-offset-y="74"  data-expected-width="76" data-expected-height="20" class="firstRowFirstColumn horizontal">X XX X</div>
+  <div data-offset-x="150" data-offset-y="153" data-expected-width="86" data-expected-height="40" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
+  <div data-offset-x="14"  data-offset-y="12"  data-expected-width="76"  data-expected-height="20" class="secondRowFirstColumn horizontal RTL">X XX X</div>
+  <div data-offset-x="13"  data-offset-y="112" data-expected-width="56"  data-expected-height="70" class="secondRowSecondColumn verticalLR">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 </body>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-012.html b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-012.html
index 0121846f8a1..003c3bbb378 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-012.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/alignment/grid-self-alignment-non-static-positioned-items-012.html
@@ -77,35 +77,34 @@
   setup({ explicit_done: true });
 </script>
 <body onload="document.fonts.ready.then(() => { checkLayout('.grid'); })">
-<!-- The test cases with vertical-rl wirting-mode will fail becauuse of bug 779105 -->
 <div class="grid">
-  <div data-offset-x="70"  data-offset-y="2"   data-expected-width="26" data-expected-height="70" class="firstRowFirstColumn verticalLR">X XX X</div>
-  <div data-offset-x="154" data-offset-y="64"  data-expected-width="46" data-expected-height="80" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
-  <div data-offset-x="20"  data-offset-y="188" data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn RTL">X XX X</div>
-  <div data-offset-x="108" data-offset-y="152" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalLR RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="73"  data-offset-y="3"   data-expected-width="26" data-expected-height="70" class="firstRowFirstColumn verticalLR">X XX X</div>
+  <div data-offset-x="157" data-offset-y="65"  data-expected-width="46" data-expected-height="80" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
+  <div data-offset-x="23"  data-offset-y="189" data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn RTL">X XX X</div>
+  <div data-offset-x="111" data-offset-y="153" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalLR RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 <div class="grid RTL">
-  <div data-offset-x="220" data-offset-y="2"   data-expected-width="26" data-expected-height="70" class="firstRowFirstColumn verticalLR">X XX X</div>
-  <div data-offset-x="54"  data-offset-y="64"  data-expected-width="46" data-expected-height="80" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
-  <div data-offset-x="158" data-offset-y="188" data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn LTR">X XX X</div>
-  <div data-offset-x="8"   data-offset-y="152" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalRL RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="223" data-offset-y="3"   data-expected-width="26" data-expected-height="70" class="firstRowFirstColumn verticalLR">X XX X</div>
+  <div data-offset-x="57"  data-offset-y="65"  data-expected-width="46" data-expected-height="80" class="firstRowSecondColumn verticalRL">XX X<br>X XXX X<br>XX XXX</div>
+  <div data-offset-x="161" data-offset-y="189" data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn LTR">X XX X</div>
+  <div data-offset-x="11"  data-offset-y="153" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalRL RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 <br><br>
 
 <div class="grid verticalLR">
-  <div data-offset-x="8"   data-offset-y="74"  data-expected-width="76" data-expected-height="20" class="firstRowFirstColumn horizontal">X XX X</div>
-  <div data-offset-x="60"  data-offset-y="153" data-expected-width="86" data-expected-height="40" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
-  <div data-offset-x="189" data-offset-y="2"   data-expected-width="26" data-expected-height="70" class="secondRowFirstColumn verticalRL">X XX X</div>
-  <div data-offset-x="158" data-offset-y="102" data-expected-width="76" data-expected-height="50" class="secondRowSecondColumn horizontal RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="11"  data-offset-y="75"  data-expected-width="76" data-expected-height="20" class="firstRowFirstColumn horizontal">X XX X</div>
+  <div data-offset-x="63"  data-offset-y="154" data-expected-width="86" data-expected-height="40" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
+  <div data-offset-x="192" data-offset-y="3"   data-expected-width="26" data-expected-height="70" class="secondRowFirstColumn verticalRL">X XX X</div>
+  <div data-offset-x="161" data-offset-y="103" data-expected-width="76" data-expected-height="50" class="secondRowSecondColumn horizontal RTL">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 <div class="grid verticalRL">
-  <div data-offset-x="170" data-offset-y="74"  data-expected-width="76" data-expected-height="20" class="firstRowFirstColumn horizontal">X XX X</div>
-  <div data-offset-x="108" data-offset-y="153" data-expected-width="86" data-expected-height="40" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
-  <div data-offset-x="14"  data-offset-y="2"   data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn horizontal RTL">X XX X</div>
-  <div data-offset-x="40"  data-offset-y="102" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalLR">XX X<br>X XXX<br>X<br>XX XXX</div>
+  <div data-offset-x="173" data-offset-y="75"  data-expected-width="76" data-expected-height="20" class="firstRowFirstColumn horizontal">X XX X</div>
+  <div data-offset-x="111" data-offset-y="154" data-expected-width="86" data-expected-height="40" class="firstRowSecondColumn horizontal">XX X<br>X XXX X<br>XX XXX</div>
+  <div data-offset-x="17"  data-offset-y="3"   data-expected-width="76" data-expected-height="20" class="secondRowFirstColumn horizontal RTL">X XX X</div>
+  <div data-offset-x="43"  data-offset-y="103" data-expected-width="56" data-expected-height="70" class="secondRowSecondColumn verticalLR">XX X<br>X XXX<br>X<br>XX XXX</div>
 </div>
 
 </body>
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-background-image.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-background-image.html
index d294b669e35..866e9459602 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-background-image.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-background-image.html
@@ -4,7 +4,7 @@
 <link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-background-image-ref.html">
-<meta name=fuzzy content="2;40">
+<meta name=fuzzy content="0-3;0-50">
 <style>
 div { width: 100px; height: 50px; background-image: url(support/exif-orientation-2-ur.jpg); }
 .no-orient { image-orientation: none; }
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-background-position.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-background-position.html
index cf4fcd4a301..d90035728b8 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-background-position.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-background-position.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-background-position-ref.html">
-<meta name="fuzzy" content="10;100">
+<meta name="fuzzy" content="0-5;0-50">
 <style>
     .exif-2 {
         position: absolute;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-default.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-default.html
index 8a16ff7af49..7487e40db76 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-default.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-default.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-default-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-200">
 <style>
     body {
         overflow: hidden;
@@ -58,4 +58,4 @@
         <br>Undefined (invalid value)
     </div>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic1.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic1.html
index 69043eee850..29355518fde 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic1.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic1.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-from-image-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-200">
 <style>
     body {
         overflow: hidden;}
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic2.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic2.html
index b23ef385fba..053919d2602 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic2.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited-dynamic2.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-none-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-100">
 <style>
     body {
         overflow: hidden;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited.html
index 7caa91d5607..2db88810bca 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-composited.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-from-image-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-200">
 <style>
     body {
         overflow: hidden;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-content-images.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-content-images.html
index 5b89216d518..a5be8c2277c 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-content-images.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-content-images.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-from-image-content-images-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-250">
 <style>
     div.image {
         display: inline-block;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-dynamic1.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-dynamic1.html
index d1617a6408e..d5e00f27cf3 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-dynamic1.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-dynamic1.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-from-image-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-200">
 <style>
     body {
         overflow: hidden;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-dynamic2.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-dynamic2.html
index 5a37a96083c..d70c5f6b3c0 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-dynamic2.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-dynamic2.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-none-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-100">
 <style>
     body {
         overflow: hidden;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-embedded-content.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-embedded-content.html
index d1539358f54..a07db17a5de 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-embedded-content.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image-embedded-content.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-from-image-embedded-content-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-200">
 <style>
     iframe {
         display: inline-block;
@@ -43,4 +43,4 @@
     <br>
     <iframe src="support/exif-orientation-9-u.jpg" frameborder=0></iframe>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image.html
index 9e27bd79051..14b929c0895 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-from-image.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-from-image-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-200">
 <style>
     body {
         overflow: hidden;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-list-style-image.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-list-style-image.html
index 926b3ab9ff0..ac735626dbd 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-list-style-image.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-list-style-image.html
@@ -4,7 +4,7 @@
 <link rel="author" title="Cameron McCormack" href="mailto:cam@mcc.id.au">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-list-style-image-ref.html">
-<meta name=fuzzy content="2;40">
+<meta name=fuzzy content="0-3;0-50">
 <style>
 ul { margin-left: 100px; list-style-image: url(support/exif-orientation-2-ur.jpg); }
 .no-orient { image-orientation: none; }
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none-content-images.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none-content-images.html
index da5b6704143..ed1657505cc 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none-content-images.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none-content-images.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-none-content-images-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-150">
 <style>
     div.image {
         display: inline-block;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none-image-document.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none-image-document.html
index d333b5f4f57..672ed58e6e0 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none-image-document.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none-image-document.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-none-image-document-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-200">
 <style>
     iframe {
         display: inline-block;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none.html
index c903cee741f..dfdfa011aef 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/image-orientation-none.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/image-orientation-none-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-100">
 <style>
     body {
         overflow: hidden;
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/svg-image-orientation-none.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/svg-image-orientation-none.html
index a89de9df7de..f585cdb76bf 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/svg-image-orientation-none.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/svg-image-orientation-none.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/svg-image-orientation-none-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-100">
 </head>
 <body>
     <svg style="width: 500px; height: 650px; image-orientation: none;">
@@ -21,4 +21,4 @@
         <image xlink:href="support/exif-orientation-9-u.jpg" X="0" Y="250"></image>
     </svg>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-images/image-orientation/svg-image-orientation.html b/tests/wpt/web-platform-tests/css/css-images/image-orientation/svg-image-orientation.html
index 9a411ae37b1..758e900e91c 100644
--- a/tests/wpt/web-platform-tests/css/css-images/image-orientation/svg-image-orientation.html
+++ b/tests/wpt/web-platform-tests/css/css-images/image-orientation/svg-image-orientation.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="reference/svg-image-orientation-ref.html">
-<meta name=fuzzy content="10;100">
+<meta name=fuzzy content="0-5;0-200">
 </head>
 <body>
     <svg style="width: 500px; height: 650px">
@@ -21,4 +21,4 @@
         <image xlink:href="support/exif-orientation-9-u.jpg" X="0" Y="250"></image>
     </svg>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/abspos-containing-block-outside-spanner-ref.html b/tests/wpt/web-platform-tests/css/css-multicol/abspos-containing-block-outside-spanner-ref.html
new file mode 100644
index 00000000000..a221907f007
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/abspos-containing-block-outside-spanner-ref.html
@@ -0,0 +1,4 @@
+<!DOCTYPE html>
+<p>There should be no red.</p>
+<div style="position:absolute; top:0; left:0; background-color:green; height:100px; width:100px;"></div>
+<div style="position:absolute; bottom:0; right:0; background-color:green; height:100px; width:100px;"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/abspos-containing-block-outside-spanner.html b/tests/wpt/web-platform-tests/css/css-multicol/abspos-containing-block-outside-spanner.html
new file mode 100644
index 00000000000..2a9ee38df5f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/abspos-containing-block-outside-spanner.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<title>Abspos elements nested inside a column spanner</title>
+<link rel="help" href="href=https://drafts.csswg.org/css-multicol/">
+<link rel="match" href="abspos-containing-block-outside-spanner-ref.html">
+<p>There should be no red.</p>
+<div style="position:absolute; top:0; left:0; background-color:red; height:100px; width:100px;"></div>
+<div style="position:absolute; bottom:0; right:0; background-color:red; height:100px; width:100px;"></div>
+<div style="columns:3; column-gap:1em; width:20em;">
+    <div style="position:relative;">
+        <div style="column-span:all; height:50px;">
+            <div style="position:absolute; top:0; left:0; background-color:green; height:100px; width:100px;"></div>
+            <div style="position:absolute; bottom:0; right:0; background-color:green; height:100px; width:100px;"></div>
+        </div>
+    </div>
+</div>
diff --git a/tests/wpt/web-platform-tests/css/css-text-decor/reference/text-decoration-thickness-single-notref.html b/tests/wpt/web-platform-tests/css/css-text-decor/reference/text-decoration-thickness-single-notref.html
new file mode 100644
index 00000000000..4a86eb189fa
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text-decor/reference/text-decoration-thickness-single-notref.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Non-reference case for text-decoration-thickness</title>
+    <link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
+    <style>
+        div span {
+            font: 20px/1 Ahem;
+            padding-right: 1em;
+
+           text-decoration: underline;
+           text-decoration-thickness: 20px;
+        }
+    </style>
+</head>
+<body>
+    <p>Test passes if the underline thickness is 10px thick.</p>
+    <div><span>XXXX</span></div>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-text-decor/text-decoration-thickness-single.html b/tests/wpt/web-platform-tests/css/css-text-decor/text-decoration-thickness-single.html
new file mode 100644
index 00000000000..b62a4280407
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-text-decor/text-decoration-thickness-single.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>Test case for text-decoration-thickness</title>
+    <meta name="assert" content="text-decoration-thickness: only using the thickness property should change painted result">
+    <link rel="author" title="Dominik Röttsches" href="mailto:drott@chromium.org">
+    <link rel="help" href="https://drafts.csswg.org/css-text-decor-4/#text-decoration-width-property">
+    <link rel="mismatch" href="reference/text-decoration-thickness-single-notref.html">
+    <link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
+    <style>
+        div span {
+            font: 20px/1 Ahem;
+            padding-right: 1em;
+
+            text-decoration: underline;
+            text-decoration-thickness: 10px;
+        }
+    </style>
+</head>
+<body>
+    <p>Test passes if the underline thickness is 10px thick.</p>
+    <div><span>XXXX</span></div>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-transforms/perspective-transforms-equivalence.html b/tests/wpt/web-platform-tests/css/css-transforms/perspective-transforms-equivalence.html
index 2f2ae21f87f..818555f6116 100644
--- a/tests/wpt/web-platform-tests/css/css-transforms/perspective-transforms-equivalence.html
+++ b/tests/wpt/web-platform-tests/css/css-transforms/perspective-transforms-equivalence.html
@@ -9,7 +9,7 @@
 Perspective with different transforms can have small anti-aliasing
 pixel differences, so the test should fuzzy patch to the ref.
 -->
-<meta name="fuzzy" content="maxDifference=10;totalPixels=10">
+<meta name="fuzzy" content="maxDifference=0-10;totalPixels=0-10">
 <style>
 
 #container {
diff --git a/tests/wpt/web-platform-tests/css/cssom/flex-serialization.html b/tests/wpt/web-platform-tests/css/cssom/flex-serialization.html
new file mode 100644
index 00000000000..189481a3947
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/cssom/flex-serialization.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8">
+    <title>CSSOM - Flex serialization</title>
+    <link rel="help" href="https://drafts.csswg.org/cssom/#serialize-a-css-value">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <style>
+        div { flex: initial; }
+        div { flex: 0; }
+        div { flex: initial; flex-basis: initial; flex-shrink: initial; }
+        div { flex: initial; flex-shrink: 0; }
+        div { flex: initial; flex-basis: 0; flex-shrink: 2;}
+    </style>
+
+    <script>
+    test(function () {
+        var styleSheet = document.styleSheets[0];
+
+        assert_equals(styleSheet.cssRules[0].style.cssText, "flex: initial;", "Single value flex with CSS-wide keyword should serialize correctly.");
+        assert_in_array(styleSheet.cssRules[1].style.cssText, ["flex: 0px;", "flex: 0 1 0px;"], "Single value flex with non-CSS-wide keyword should serialize correctly.");
+        assert_equals(styleSheet.cssRules[2].style.cssText, "flex: initial;", "Multiple values flex with CSS-wide keyword should serialize correctly.");
+        assert_equals(styleSheet.cssRules[3].style.cssText, "flex-grow: initial; flex-basis: initial; flex-shrink: 0;", "Multiple values flex with CSS-wide and non-CSS-wide keyword should serialize correctly.");
+        assert_equals(styleSheet.cssRules[4].style.cssText, "flex-grow: initial; flex-basis: 0px; flex-shrink: 2;", "Multiple values flex with CSS-wide and non-CSS-wide keyword should serialize correctly.");
+    });
+    </script>
+</head>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/selectors/focus-visible-002-manual.html b/tests/wpt/web-platform-tests/css/selectors/focus-visible-002.html
similarity index 89%
rename from tests/wpt/web-platform-tests/css/selectors/focus-visible-002-manual.html
rename to tests/wpt/web-platform-tests/css/selectors/focus-visible-002.html
index f86082df8b8..19c937a7abb 100644
--- a/tests/wpt/web-platform-tests/css/selectors/focus-visible-002-manual.html
+++ b/tests/wpt/web-platform-tests/css/selectors/focus-visible-002.html
@@ -8,6 +8,9 @@
   <link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
   <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>
   <style>
     :focus-visible {
       outline: darkgreen dotted 1px; /* fallback for Edge */
@@ -37,7 +40,7 @@
   <div>
     <input data-tested="false" id="input3" type="email" value="Focus me."></input>
   </div>
-  <div>
+   <div>
     <input data-tested="false" id="input4" type="password" value="Focus me."></input>
   </div>
   <div>
@@ -78,6 +81,11 @@
   </div>
   <script>
     async_test(function(t) {
+        function mouseClickInTarget(selector) {
+            let target = document.querySelector(selector);
+            return test_driver.click(target);
+        }
+
         function testNextTarget(e) {
             let el = e.target;
             assert_equals(getComputedStyle(el).outlineColor, "rgb(0, 100, 0)");
@@ -91,6 +99,8 @@
             }
         }
         input1.addEventListener("click", t.step_func(testNextTarget));
+
+        mouseClickInTarget("[data-tested=false]");
     }, "Mouse focus on elements which would show a virtual keyboard should match :focus-visible");
   </script>
 </body>
diff --git a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/feature-propagation-to-auxiliary-context.html b/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/feature-propagation-to-auxiliary-context.html
deleted file mode 100644
index 86cdcb3b427..00000000000
--- a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/feature-propagation-to-auxiliary-context.html
+++ /dev/null
@@ -1,71 +0,0 @@
-<!DOCTYPE html>
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-<body>
-<div id="iframe-embedder"></div>
-<script src="./resources/helper.js"></script>
-<script>
-'use strict';
-
-// TODO(ekaramad): Add cross-origin examples both for the <iframe> and the
-// opened window.
-const iframe_src = "/feature-policy/feature-policy-for-sandbox/resources/window_opener.html";
-const window_url_main = "/feature-policy/feature-policy-for-sandbox/resources/opened_window.html";
-
-promise_test( async () => {
-  const iframe = await add_iframe({
-    src: iframe_src,
-    allow: features_that_propagate.map(feature => `${feature} 'none'`).join(", ")
-  });
-
-  iframe.contentWindow.postMessage(
-    {type: "features", features: features_that_propagate}, "*");
-  const iframe_states = await feature_update();
-  for (const [feature, state] of iframe_states)
-    assert_false(state, `'${feature}' is not disabled in <iframe>.'`);
-
-  iframe.contentWindow.postMessage({
-      type: "open_window",
-      url: `${window_url_main}?${features_that_propagate.join("&")}`
-  }, "*");
-  const window_states = await feature_update();
-  for (const [feature, state] of iframe_states)
-    assert_false(state, `'${feature}' is not disabled in new window.`);
-
-  const did_close = await close_aux_window(iframe);
-  assert_true(did_close);
-  iframe.parentElement.removeChild(iframe);
-}, "Verify feature policies are inherited by the auxiliary browsing context " +
-   "if opened from a non-sandboxed same-origin <iframe>.");
-
-promise_test( async () => {
-  const iframe = await add_iframe({
-    src: iframe_src,
-    allow: features_that_propagate.map(feature => `${feature} 'none'`).join(", "),
-    sandbox: "allow-scripts allow-popups allow-popups-to-escape-sandbox"
-  });
-
-  iframe.contentWindow.postMessage(
-    {type: "features", features: features_that_propagate}, "*");
-  const iframe_states = await feature_update();
-  for (const [feature, state] of iframe_states)
-    assert_false(state, `'${feature}' is not disabled in <iframe>.'`);
-
-  iframe.contentWindow.postMessage({
-      type: "open_window",
-      url: `${window_url_main}?${features_that_propagate.join("&")}`
-  }, "*");
-  const window_states = await feature_update();
-  for (const [feature, state] of window_states)
-    assert_true(state, `'${feature}' is disabled in new window.`);
-
-  const did_close = await close_aux_window(iframe);
-  assert_true(did_close);
-  iframe.parentElement.removeChild(iframe);
-}, "Verify feature policies are NOT inherited by the auxiliary browsing " +
-  "context if opened from a sandboxed same-origin <iframe> which allows " +
-  "popups to escape sandbox.");
-</script>
-</body>
diff --git a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/helper.js b/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/helper.js
deleted file mode 100644
index 4c553525300..00000000000
--- a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/helper.js
+++ /dev/null
@@ -1,118 +0,0 @@
-// The list of all feature policies including the sandbox policies.
-const all_features = document.featurePolicy.allowedFeatures();
-
-// 'popups' is nonsensical in this test and it is not possible to test 'scripts'
-// within this test model.
-const ignore_features_for_auxilary_context = ["popups", "scripts"];
-
-// Feature-policies that represent specific sandbox flags.
-const sandbox_features = [
-    "downloads", "forms", "modals", "orientation-lock",
-    "pointer-lock", "popups", "presentation", "scripts", "top-navigation"];
-
-// TODO(ekaramad): Figure out different inheritance requirements for different
-// policies.
-// Features which will be tested for propagation to auxiliary contexts.
-const features_that_propagate = all_features.filter(
-    (feature) => !ignore_features_for_auxilary_context.includes(feature));
-
-var last_feature_message = null;
-var on_new_feature_callback = null;
-var on_close_window_callback = null;
-
-function add_iframe(options) {
-  assert_true("src" in options, "invalid options");
-  var iframe = document.createElement("iframe");
-  iframe.src = options.src;
-  if ("allow" in options)
-    iframe.setAttribute("allow", options.allow);
-  if ("sandbox" in options)
-    iframe.setAttribute("sandbox", options.sandbox);
-  return new Promise( (r) => {
-    iframe.addEventListener("load", () => r(iframe));
-    document.getElementById("iframe-embedder").appendChild(iframe);
-  });
-}
-
-// Resolves after |c| animation frames.
-function wait_for_raf_count(c) {
-  let count = c;
-  let callback = null;
-  function on_raf() {
-    if (--count === 0) {
-      callback();
-      return;
-    }
-    window.requestAnimationFrame(on_raf);
-  }
-  return new Promise( r => {
-    callback = r;
-    window.requestAnimationFrame(on_raf);
-  });
-}
-
-// Returns a promise which is resolved with the next/already received message
-// with features update for |features|. The resolved value is the state of the
-// features |features|. If |optional_timeout| is provided, after the given delay
-// (in terms of rafs) the promise is resolved with false.
-function feature_update(optional_timeout_rafs) {
-  function reset_for_next_update() {
-    return new Promise((r) => {
-      const states = last_feature_message.states;
-      last_feature_message = null;
-      r(states);
-    });
-  }
-
-  if (last_feature_message)
-    return reset_for_next_update();
-
-  if (optional_timeout_rafs) {
-    wait_for_raf_count(optional_timeout_rafs).then (() => {
-      last_feature_message = {states: []};
-      on_new_feature_callback();
-    });
-  }
-
-  return new Promise((r) => on_new_feature_callback = r)
-            .then(reset_for_next_update);
-}
-
-function close_aux_window(iframe) {
-  return new Promise( (r) => {
-    on_close_window_callback = r;
-    iframe.contentWindow.postMessage({type: "close_window"}, "*");
-  });
-}
-
-function on_message(e) {
-  var msg = e.data;
-  assert_true("type" in msg);
-  switch (msg.type) {
-    case "features":
-      on_feature_msg(msg);
-      break;
-    case "close_window":
-      on_close_window_msg(msg);
-      break;
-  }
-}
-
-function on_feature_msg(msg) {
-  assert_true("states" in msg);
-  last_feature_message = msg;
-  if (on_new_feature_callback) {
-    on_new_feature_callback();
-    on_new_feature_callback = null;
-  }
-}
-
-
-function on_close_window_msg(msg) {
-  if (on_close_window_callback) {
-    on_close_window_callback(msg.result);
-    on_close_window_callback = null;
-  }
-}
-
-window.addEventListener("message", on_message);
diff --git a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/opened_window.html b/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/opened_window.html
deleted file mode 100644
index 53ffbac5ad7..00000000000
--- a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/opened_window.html
+++ /dev/null
@@ -1,5 +0,0 @@
-<!doctype html>
-<title>This page verifies the status of the feature provided in search query.</title>
-<body>
-<script async src="/feature-policy/feature-policy-for-sandbox/resources/opened_window.js"></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/opened_window.js b/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/opened_window.js
deleted file mode 100644
index d69c75cca00..00000000000
--- a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/opened_window.js
+++ /dev/null
@@ -1,9 +0,0 @@
-const features = window.location.search.substr(1).split("&");
-const states = features
-  .map(feature => [feature, document.featurePolicy.allowsFeature(feature)]);
-
-// TODO(ekaramad): We might at some point choose a different propagation
-// strategy with rel=noopener. This test should adapt accordingly (perhaps use
-// broadcast channels).
-window.opener.parent.postMessage(
-    {type: "features", states: states}, "*");
diff --git a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/window_opener.html b/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/window_opener.html
deleted file mode 100644
index 8124ab65179..00000000000
--- a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/window_opener.html
+++ /dev/null
@@ -1,5 +0,0 @@
-<!doctype html>
-<title>Helper document for cross-domain messaging.</title>
-<body>
-<script async src="/feature-policy/feature-policy-for-sandbox/resources/window_opener.js"></script>
-</body>
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/window_opener.js b/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/window_opener.js
deleted file mode 100644
index 6788c25f575..00000000000
--- a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/resources/window_opener.js
+++ /dev/null
@@ -1,22 +0,0 @@
-var auxiliary_context = null;
-window.addEventListener("message", (e) => {
-  var msg = e.data;
-  switch (msg.type) {
-    case "features":
-      e.source.postMessage({
-        type: "features",
-        states:
-          msg.features
-          .map(feature => [feature, document.featurePolicy.allowsFeature(feature)])
-      }, "*");
-      break;
-    case "open_window":
-      auxiliary_context = window.open(msg.url);
-      break;
-    case "close_window":
-      if (auxiliary_context)
-        auxiliary_context.close();
-      e.source.postMessage(
-          {type: "close_window", result: auxiliary_context != null}, "*");
-  }
-});
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/sandbox-policies-in-allow-attribute.html b/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/sandbox-policies-in-allow-attribute.html
deleted file mode 100644
index c9e2d711938..00000000000
--- a/tests/wpt/web-platform-tests/feature-policy/feature-policy-for-sandbox/sandbox-policies-in-allow-attribute.html
+++ /dev/null
@@ -1,64 +0,0 @@
-<!DOCTYPE html>
-<head>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-</head>
-<body>
-<div id="iframe-embedder"></div>
-<script src="./resources/helper.js"></script>
-<script>
-'use strict';
-
-const iframe_src = "/feature-policy/feature-policy-for-sandbox/resources/window_opener.html";
-
-promise_test( async () => {
-  const iframe = await add_iframe({
-    src: iframe_src,
-    allow: sandbox_features.map(feature => `${feature} *`).join(", "),
-    sandbox: ""
-  });
-
-  iframe.contentWindow.postMessage({type: "features", features: sandbox_features}, "*");
-  const iframe_states = await feature_update();
-  for (const [feature, state] of iframe_states)
-    assert_true(state, `'${feature}' should not be disabled in <iframe>.'`);
-
-  iframe.parentElement.removeChild(iframe);
-}, "Verify that when a sandbox related feature is enabled in 'allow' then " +
-   " the feature will be enabled regardless of sandbox attribute's value.");
-
-promise_test( async () => {
-  const non_script_sandbox_features =
-    sandbox_features.filter(feature => feature !== "scripts");
-  const sandbox_flags =
-    sandbox_features.map(feature => `allow-${feature}`).join(" ");
-  const allow_attribute =
-    non_script_sandbox_features.map(feature => `${feature} 'none'`).join(", ");
-
-  const iframe = await add_iframe(
-      {src: iframe_src, allow: allow_attribute, sandbox: sandbox_flags});
-
-  iframe.contentWindow.postMessage(
-    {type: "features", features: non_script_sandbox_features}, "*");
-  const iframe_states = await feature_update();
-  for (const [feature, state] of iframe_states)
-    assert_false(state, `'${feature}' should be disabled in <iframe>.'`);
-
-  iframe.parentElement.removeChild(iframe);
-}, "Verify that when a sandbox related feature (except scripts) is disabled in 'allow' then " +
-   " the feature will be disabled regardless of sandbox attribute's value.");
-
-promise_test( async () => {
-  const iframe = await add_iframe(
-    {src: iframe_src, allow: "scripts 'none'", sandbox: "allow-scripts"});
-
-  iframe.contentWindow.postMessage(
-    {type: "features", features: ['scripts']}, "*");
-  const iframe_states = await feature_update(10);
-
-  assert_equals(iframe_states.length, 0);
-  iframe.parentElement.removeChild(iframe);
-}, "Verify that when scripts is disabled in 'allow' then " +
-  " the feature will be disabled regardless of sandbox attribute's value.");
-</script>
-</body>
diff --git a/tests/wpt/web-platform-tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect.tentative.html b/tests/wpt/web-platform-tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect.tentative.html
index d9d5646aa74..d889e393025 100644
--- a/tests/wpt/web-platform-tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect.tentative.html
+++ b/tests/wpt/web-platform-tests/html/canvas/element/manual/drawing-images-to-the-canvas/image-orientation/drawImage-with-src-rect.tentative.html
@@ -6,7 +6,7 @@
 <link rel="author" title="Stephen Chenney" href="mailto:schenney@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-images-3/#propdef-image-orientation">
 <link rel="match" href="drawImage-with-src-rect-ref.html">
-<meta name=fuzzy content="30;100">
+<meta name=fuzzy content="0-3;0-200">
   <script>
     window.onload = () => {
       const img = document.getElementById('img-element');
@@ -22,4 +22,4 @@
   <img id="img-element" src="/css/css-images/image-orientation/support/exif-orientation-3-lr.jpg">
   <canvas id="bitmap-canvas"></canvas>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-containing-block-ref.html b/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-containing-block-ref.html
index ccb755b347c..282c0d4ef12 100644
--- a/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-containing-block-ref.html
+++ b/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-containing-block-ref.html
@@ -2,7 +2,9 @@
 <title>Reference for fieldset containing block</title>
 <style>
 p { margin: 0; height: 100px }
-div { position: absolute; top: 108px; width: 100px; height: 100px; background: lime; }
+.div1 { position: absolute; top: 108px; width: 100px; height: 100px; background: lime; }
+.div2 { position: absolute; top: 158px; width: 200px; height: 100px; background: lime; }
 </style>
 <p>There should be no red.</p>
-<div></div>
+<div class="div1"></div>
+<div class="div2"></div>
diff --git a/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-containing-block.html b/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-containing-block.html
index e7529946a49..cefb3584eae 100644
--- a/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-containing-block.html
+++ b/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-containing-block.html
@@ -7,7 +7,29 @@ fieldset { position: relative; border: none; padding: 0; margin: 0; }
 legend { padding: 0; width: 100px; height: 50px; background: lime; }
 div { position: absolute; top: 0; width: 100px; height: 50px; background: lime; }
 .behind { height:100px; top: 108px; background: red; }
+
+.fixed-container {
+  filter: invert();
+  overflow: hidden;
+  width: 200px;
+  height: 200px;
+}
+.fixed {
+  position: fixed;
+  width: 400px;
+  height: 100px;
+  background: linear-gradient(to right, #ff00ff 50%, #00ffff 50%);
+}
+.has-fixed {
+  width: 0px;
+  height: 0px;
+}
 </style>
 <p>There should be no red.</p>
 <div class="behind"></div>
 <fieldset><legend></legend><div></div></fieldset>
+
+<fieldset class="fixed-container">
+<legend class="has-fixed"><div style="position:fixed; width:0; height0;"></div></legend>
+<div class="fixed"></div>
+</fieldset>
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-not-application-textarea.html b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-not-application-textarea.html
index 3116cd93523..e8e82791880 100644
--- a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-not-application-textarea.html
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-not-application-textarea.html
@@ -11,8 +11,15 @@
     var el = document.createElement("textarea");
     assert_equals(el.selectionStart, 0, "initial selectionStart");
     assert_equals(el.selectionEnd, 0, "initial selectionEnd");
-    assert_equals(el.selectionDirection, "none", "initial selectionDirection");
+    // The initial selection direction must be "none" if the platform supports that
+    // direction, or "forward" otherwise.
+    assert_in_array(el.selectionDirection, ["none", "forward"]);
 
+    const initialDirection = el.selectionDirection;
+    el.selectionDirection = "none";
+    assert_equals(el.selectionDirection, initialDirection);
+
+    el.value = "foo";
     el.selectionStart = 1;
     el.selectionEnd = 1;
     el.selectionDirection = "forward";
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-not-application.html b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-not-application.html
index a7d7f1c5518..aa98a030a83 100644
--- a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-not-application.html
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-not-application.html
@@ -63,8 +63,11 @@
   });
 
   applicableTypes.forEach(function(type) {
-    var el = document.createElement("input");
-    if (type) el.type = type;
+    const el = document.createElement("input");
+    if (type) {
+      el.type = type;
+    }
+    const initialDirection = el.selectionDirection;
 
     test(() => {
       assert_equals(el.selectionStart, 0);
@@ -78,6 +81,11 @@
       assert_in_array(el.selectionDirection, ["forward", "none"]);
     }, `selectionDirection on an input[type=${type}] returns a value`);
 
+    test(() => {
+      el.selectionDirection = "none";
+      assert_equals(el.selectionDirection, initialDirection);
+    }, `assigning selectionDirection "none" on an input[type=${type}] should give the initial direction`);
+
     test(() => {
       el.selectionStart = 1;
     }, `assigning selectionStart on an input[type=${type}] doesn't throw an exception`);
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-start-end.html b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-start-end.html
index 4bcecf234cc..919d1a4d658 100644
--- a/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-start-end.html
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/textfieldselection/selection-start-end.html
@@ -144,6 +144,31 @@
     }
   }, "selectionEnd edge-case values");
 
+  test(() => {
+    for (const el of createTestElements(testValue)) {
+      el.selectionStart = 200;
+      assert_equals(el.selectionStart, testValue.length);
+      el.remove();
+    }
+  }, "selectionStart should be clamped by the current value length");
+
+  test(() => {
+    for (const el of createTestElements(testValue)) {
+      el.selectionStart = 300;
+      assert_equals(el.selectionEnd, testValue.length);
+      el.remove();
+    }
+  }, "selectionEnd should be clamped by the current value length");
+
+  test(() => {
+    for (const el of createTestElements(testValue)) {
+      el.setSelectionRange(200, 300);
+      assert_equals(el.selectionStart, testValue.length);
+      assert_equals(el.selectionEnd, testValue.length);
+      el.remove();
+    }
+  }, "setSelectionRange should be clamped by the current value length");
+
   test(() => {
     for (let el of createTestElements(testValue)) {
       const start = 1;
diff --git a/tests/wpt/web-platform-tests/lint.ignore b/tests/wpt/web-platform-tests/lint.ignore
index bfbb2965738..86c71544396 100644
--- a/tests/wpt/web-platform-tests/lint.ignore
+++ b/tests/wpt/web-platform-tests/lint.ignore
@@ -708,9 +708,9 @@ WEB-PLATFORM.TEST:signed-exchange/resources/generate-test-sxgs.sh
 
 # Web Bundle files have hard-coded URLs
 WEB-PLATFORM.TEST:web-bundle/resources/generate-test-wbns.sh
+WEB-PLATFORM.TEST:web-bundle/resources/nested/*.wbn
 WEB-PLATFORM.TEST:web-bundle/resources/wbn/*.wbn
-WEB-PLATFORM.TEST:web-bundle/subresource-loading/subresource-loading-from-web-bundle.tentative.html
-WEB-PLATFORM.TEST:web-bundle/subresource-loading/subresource-loading-path-restriction.tentative.html
+WEB-PLATFORM.TEST:web-bundle/subresource-loading/*.html
 
 # Tests that depend on resources in /gen/ in Chromium:
 # https://github.com/web-platform-tests/wpt/issues/16455
diff --git a/tests/wpt/web-platform-tests/serial/serialPort_loopback-manual.https.html b/tests/wpt/web-platform-tests/serial/serialPort_loopback-manual.https.html
index 9e7801d8332..201a2dedba8 100644
--- a/tests/wpt/web-platform-tests/serial/serialPort_loopback-manual.https.html
+++ b/tests/wpt/web-platform-tests/serial/serialPort_loopback-manual.https.html
@@ -92,90 +92,6 @@
 
         await port.close();
       }, 'Canceling the reader discards buffered data.');
-
-      manual_loopback_serial_test(async (t, port) => {
-        await port.open({baudRate: 115200, bufferSize: 1024});
-
-        // Create something much larger than bufferSize above.
-        const data = new Uint8Array(16 * 1024);
-        for (let i = 0; i < data.byteLength; ++i)
-          data[i] = (i / 1024) & 0xff;
-
-        // Completely write |data| to the port without waiting for it to be
-        // received.
-        const writer = port.writable.getWriter();
-        writer.write(data);
-        await writer.close();
-
-        const reader = port.readable.getReader();
-        const chunks = [];
-        let actualLength = 0;
-        while (true) {
-          try {
-            const {value, done} = await reader.read();
-            if (value) {
-              actualLength += value.byteLength;
-              chunks.push(value);
-            }
-            if (done) {
-              assert_unreached("Unexpected end of stream.");
-              break;
-            }
-          } catch (e) {
-            assert_equals(e.name, 'BufferOverrunError');
-            break;
-          }
-        }
-        reader.releaseLock();
-
-        const buffer = new Uint8Array(actualLength);
-        chunks.reduce((offset, chunk) => {
-          buffer.set(chunk, offset);
-          return offset + chunk.byteLength;
-        }, 0);
-
-        assert_greater_than(actualLength, 0);
-        compareArrays(buffer, data.slice(0, actualLength));
-
-        await port.close();
-      }, 'Overflowing the receive buffer triggers an error.');
-
-      manual_loopback_serial_test(async (t, port) => {
-        await port.open({baudRate: 115200, bufferSize: 1024});
-
-        let reader = port.readable.getReader();
-        let readPromise = (async () => {
-          // A single zero byte will be read before the break is detected.
-          const {value, done} = await reader.read();
-          compareArrays(value, new Uint8Array([0]));
-          assert_false(done);
-
-          try {
-            const {value, done} = await reader.read();
-            assert_unreached(`Expected break, got ${value.byteLength} bytes`);
-          } catch (e) {
-            assert_equals(e.constructor, DOMException);
-            assert_equals(e.name, 'BreakError');
-          }
-        })();
-
-        await port.setSignals({break: true});
-        await readPromise;
-        await port.setSignals({break: false});
-
-        const writer = port.writable.getWriter();
-        // |data| is small enough to be completely transmitted.
-        let data = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]);
-        await writer.write(data);
-        writer.releaseLock();
-
-        reader = port.readable.getReader();
-        const buffer = await readWithLength(reader, data.byteLength);;
-        compareArrays(buffer, data);
-        reader.releaseLock();
-
-        await port.close();
-      }, 'Break is detected.');
     </script>
   </body>
 </html>
diff --git a/tests/wpt/web-platform-tests/serial/serialPort_loopback_BreakError-manual.https.html b/tests/wpt/web-platform-tests/serial/serialPort_loopback_BreakError-manual.https.html
new file mode 100644
index 00000000000..22b15316e26
--- /dev/null
+++ b/tests/wpt/web-platform-tests/serial/serialPort_loopback_BreakError-manual.https.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title></title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="resources/common.js"></script>
+    <script src="resources/manual.js"></script>
+  </head>
+  <body>
+    <p>
+      These tests require a connected serial device configured to act as a
+      "loopback" device, with the transmit and receive pins wired together.
+    </p>
+    <script>
+      manual_loopback_serial_test(async (t, port) => {
+        await port.open({baudRate: 115200, bufferSize: 1024});
+
+        let reader = port.readable.getReader();
+        let readPromise = (async () => {
+          // A single zero byte will be read before the break is detected.
+          const {value, done} = await reader.read();
+          compareArrays(value, new Uint8Array([0]));
+          assert_false(done);
+
+          try {
+            const {value, done} = await reader.read();
+            assert_unreached(`Expected break, got ${value.byteLength} bytes`);
+          } catch (e) {
+            assert_equals(e.constructor, DOMException);
+            assert_equals(e.name, 'BreakError');
+          }
+        })();
+
+        await port.setSignals({break: true});
+        await readPromise;
+        await port.setSignals({break: false});
+
+        const writer = port.writable.getWriter();
+        // |data| is small enough to be completely transmitted.
+        let data = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8]);
+        await writer.write(data);
+        writer.releaseLock();
+
+        reader = port.readable.getReader();
+        const buffer = await readWithLength(reader, data.byteLength);;
+        compareArrays(buffer, data);
+        reader.releaseLock();
+
+        await port.close();
+      }, 'Break is detected.');
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/serial/serialPort_loopback_BufferOverrunError-manual.https.html b/tests/wpt/web-platform-tests/serial/serialPort_loopback_BufferOverrunError-manual.https.html
new file mode 100644
index 00000000000..e90a5b01613
--- /dev/null
+++ b/tests/wpt/web-platform-tests/serial/serialPort_loopback_BufferOverrunError-manual.https.html
@@ -0,0 +1,65 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title></title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="resources/common.js"></script>
+    <script src="resources/manual.js"></script>
+  </head>
+  <body>
+    <p>
+      These tests require a connected serial device configured to act as a
+      "loopback" device, with the transmit and receive pins wired together.
+    </p>
+    <script>
+      manual_loopback_serial_test(async (t, port) => {
+        await port.open({baudRate: 115200, bufferSize: 1024});
+
+        // Create something much larger than bufferSize above.
+        const data = new Uint8Array(16 * 1024);
+        for (let i = 0; i < data.byteLength; ++i)
+          data[i] = (i / 1024) & 0xff;
+
+        // Completely write |data| to the port without waiting for it to be
+        // received.
+        const writer = port.writable.getWriter();
+        writer.write(data);
+        await writer.close();
+
+        const reader = port.readable.getReader();
+        const chunks = [];
+        let actualLength = 0;
+        while (true) {
+          try {
+            const {value, done} = await reader.read();
+            if (value) {
+              actualLength += value.byteLength;
+              chunks.push(value);
+            }
+            if (done) {
+              assert_unreached("Unexpected end of stream.");
+              break;
+            }
+          } catch (e) {
+            assert_equals(e.name, 'BufferOverrunError');
+            break;
+          }
+        }
+        reader.releaseLock();
+
+        const buffer = new Uint8Array(actualLength);
+        chunks.reduce((offset, chunk) => {
+          buffer.set(chunk, offset);
+          return offset + chunk.byteLength;
+        }, 0);
+
+        assert_greater_than(actualLength, 0);
+        compareArrays(buffer, data.slice(0, actualLength));
+
+        await port.close();
+      }, 'Overflowing the receive buffer triggers an error.');
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/web-bundle/resources/generate-test-wbns.sh b/tests/wpt/web-platform-tests/web-bundle/resources/generate-test-wbns.sh
index 7100e6a7772..8fc28bb9db7 100755
--- a/tests/wpt/web-platform-tests/web-bundle/resources/generate-test-wbns.sh
+++ b/tests/wpt/web-platform-tests/web-bundle/resources/generate-test-wbns.sh
@@ -55,3 +55,12 @@ gen-bundle \
   -primaryURL $wpt_test_http_origin/web-bundle/resources/wbn/resource.js \
   -dir path-restriction/ \
   -o wbn/path-restriction.wbn
+
+# Create a bundle, nested-main.wbn, which includes nested-sub.wbn.
+cp -a wbn/subresource.wbn nested/nested-sub.wbn
+gen-bundle \
+  -version b1 \
+  -baseURL $wpt_test_http_origin/web-bundle/resources/wbn/ \
+  -primaryURL $wpt_test_http_origin/web-bundle/resources/wbn/resource.js \
+  -dir nested/ \
+  -o wbn/nested-main.wbn
diff --git a/tests/wpt/web-platform-tests/web-bundle/resources/nested/nested-sub.wbn b/tests/wpt/web-platform-tests/web-bundle/resources/nested/nested-sub.wbn
new file mode 100644
index 0000000000000000000000000000000000000000..eabd994ff8bceaf4ef52b329b4faa158c292af12
GIT binary patch
literal 592
zcmd7PK}!Nb6aZlD*e}?iU~WRR?zmaVMj=@!mDxdLud};PT^VPFnK!v!RXTMj`T;^<
zP`}Qf&>{t$>(V>E2k(9Fy@%F%`S`S6zPw#Tl|msq8zQQ}^Cl3viZkp>JuV{{3~H2C
zHtEQUgoCHSNULKo-Xs#9mJ-V&(_26)63CqAG_NZu449o_XZHHn#`Aj7dCwZZ)EOI%
zWnwwx#ChHMa8|QfxL7p<gAA={_>|tnQXmL)ajKxll;Ua3FqOg^v3q7>ohodzI0l8T
zW?}&5GMeUxX>(@K&AX@l6q0bSYvF+S6>?=c@u^P<tp-&;I65ZHcK7ys2nR91;rXE-
x63CR)NcKrz%P}dHy`R|9$@ag1`n7QP3!1NBkmTRB9LXsub*^({tFVc!yHCEK(r5qx

literal 0
HcmV?d00001

diff --git a/tests/wpt/web-platform-tests/web-bundle/resources/wbn/nested-main.wbn b/tests/wpt/web-platform-tests/web-bundle/resources/wbn/nested-main.wbn
new file mode 100644
index 0000000000000000000000000000000000000000..1f9278148313ad4b401a1025b5396a5b9bd60ff3
GIT binary patch
literal 1139
zcmd6mK}#Gl6vx-Kr+$K2Xd$<S;_PJO*y@y))m0SRtsX?C$IQ%IcVspR$%~HHUC|yq
zD4u!}3Kr^z(y!o0FqLgtS_@^{LUT(9FTeNyy&SFGUYwlXUYvhkPMVcUxzs~cQ4s7y
z;;VvVSL%KP!C*8`Y4iR#u_7xV&|sw1DVShC5#M)>U9)`%xyYdOKIZO@lEQ$gO?L;M
z{zma(t5&`7j?0w^IfZKlGT+#w;jo9Tsao}VFo-`~u0{qqTGM8fzD=b-5a{E9g4p9q
z6?w`rmm-iU0{R9u@P3D<DJb+c7dv29k^`4hr{D(tzRdD&4q5zkt7m5joh8eV5=I#%
z^hHEz6fTg}&epqc?-U?*u-BejVDGD&M?WZeJz=X_N*vd5Hl|~0!|C|L!Y(}TOWB@~
z&KYni*#aEmu;pEOmrldsuQhCsTiE4$+@v~J_*)Jv%n;Tj>$Vs<2&0fibI%`eur$kJ
z0;Q4~$urW`vQO%bU>vso^6`HG%I4!IBTzR+28sJ@wm|ZV)HmKZ$hFG-s%{SA;lGLX
Ur_m0-jy4M)h;@;+Mm&$q9rgp2*#H0l

literal 0
HcmV?d00001

diff --git a/tests/wpt/web-platform-tests/web-bundle/subresource-loading/subresource-loading-nested-bundle.tentative.html b/tests/wpt/web-platform-tests/web-bundle/subresource-loading/subresource-loading-nested-bundle.tentative.html
new file mode 100644
index 00000000000..acca096bfbd
--- /dev/null
+++ b/tests/wpt/web-platform-tests/web-bundle/subresource-loading/subresource-loading-nested-bundle.tentative.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<title>A nested bundle is not supported</title>
+<link
+  rel="help"
+  href="https://github.com/WICG/webpackage/blob/master/explainers/subresource-loading.md"
+/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+  <link
+    rel="webbundle"
+    href="http://web-platform.test:8001/web-bundle/resources/wbn/nested-main.wbn"
+    resources="http://web-platform.test:8001/web-bundle/resources/wbn/nested-sub.wbn"
+  />
+  <script>
+    promise_test(async () => {
+      const response = await fetch(
+        "http://web-platform.test:8001/web-bundle/resources/wbn/nested-sub.wbn"
+      );
+      assert_true(response.ok);
+    }, "A nested bundle can be fetched");
+
+    promise_test(async () => {
+      await addLinkAndWaitForError(
+        "http://web-platform.test:8001/web-bundle/resources/wbn/nested-sub.wbn",
+        "http://web-platform.test:8001/web-bundle/resources/wbn/root.js"
+      );
+      const response = await fetch(
+        "http://web-platform.test:8001/web-bundle/resources/wbn/root.js"
+      );
+      assert_false(response.ok);
+    }, "Subresources in a nested bundle should not be loaded");
+
+    function addLinkAndWaitForError(url, resources) {
+      return new Promise((resolve, reject) => {
+        const link = document.createElement("link");
+        link.rel = "webbundle";
+        link.href = url;
+        link.resources = resources;
+        link.onload = reject;
+        link.onerror = () => resolve();
+        document.body.appendChild(link);
+      });
+    }
+  </script>
+</body>
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html
new file mode 100644
index 00000000000..e3fb6e533df
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioworklet-interface/audioworkletprocessor-param-getter-overridden.https.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>
+      Test if AudioWorkletProcessor with invalid parameters array getter
+    </title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/webaudio/resources/audit.js"></script>
+  </head>
+  <body>
+    <script id="layout-test-code">
+      let audit = Audit.createTaskRunner();
+
+      // Arbitrarily determined. Any numbers should work.
+      let sampleRate = 16000;
+      let renderLength = 1280;
+      let context;
+      let filePath = 'processors/invalid-param-array-processor.js';
+
+      audit.define('Initializing AudioWorklet and Context', async (task) => {
+        context = new OfflineAudioContext(1, renderLength, sampleRate);
+        await context.audioWorklet.addModule(filePath);
+        task.done();
+      });
+
+      audit.define('Verifying AudioParam in AudioWorkletNode',
+          async (task, should) => {
+            let buffer = context.createBuffer(1, 2, context.sampleRate);
+            buffer.getChannelData(0)[0] = 1;
+
+            let source = new AudioBufferSourceNode(context);
+            source.buffer = buffer;
+            source.loop = true;
+            source.start();
+
+            let workletNode1 =
+                new AudioWorkletNode(context, 'invalid-param-array-1');
+            let workletNode2 =
+                new AudioWorkletNode(context, 'invalid-param-array-2');
+            workletNode1.connect(workletNode2).connect(context.destination);
+
+            // Manually invoke the param getter.
+            source.connect(workletNode2.parameters.get('invalidParam'));
+
+            const renderedBuffer = await context.startRendering();
+
+            // |workletNode2| should be no-op after the parameter getter is
+            // invoked. Therefore, the rendered result should be silent.
+            should(renderedBuffer.getChannelData(0), 'The rendered buffer')
+                .beConstantValueOf(0);
+            task.done();
+          }
+      );
+
+      audit.run();
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js
new file mode 100644
index 00000000000..e4a5dc39ba1
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audioworklet-interface/processors/invalid-param-array-processor.js
@@ -0,0 +1,47 @@
+/**
+ * @class InvalidParamArrayProcessor
+ * @extends AudioWorkletProcessor
+ *
+ * This processor intentionally returns an array with an invalid size when the
+ * processor's getter is queried.
+ */
+let singleton = undefined;
+let secondFetch = false;
+let useDescriptor = false;
+let processCounter = 0;
+
+class InvalidParamArrayProcessor extends AudioWorkletProcessor {
+  static get parameterDescriptors() {
+    if (useDescriptor)
+      return [{name: 'invalidParam'}];
+    useDescriptor = true;
+    return [];
+  }
+
+  constructor() {
+    super();
+    if (singleton === undefined)
+      singleton = this;
+    return singleton;
+  }
+
+  process(inputs, outputs, parameters) {
+    const output = outputs[0];
+    for (let channel = 0; channel < output.length; ++channel)
+      output[channel].fill(1);
+    return false;
+  }
+}
+
+// This overridden getter is invoked under the hood before process() gets
+// called. After this gets called, process() method above will be invalidated,
+// and mark the worklet node non-functional. (i.e. in an error state)
+Object.defineProperty(Object.prototype, 'invalidParam', {'get': () => {
+  if (secondFetch)
+    return new Float32Array(256);
+  secondFetch = true;
+  return new Float32Array(128);
+}});
+
+registerProcessor('invalid-param-array-1', InvalidParamArrayProcessor);
+registerProcessor('invalid-param-array-2', InvalidParamArrayProcessor);
diff --git a/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini b/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini
index f575f232a13..48356327d0e 100644
--- a/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini
+++ b/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini
@@ -257,3 +257,6 @@
   [WebGL test #48: attachment 3 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 0,57,0,0]
     expected: FAIL
 
+  [WebGL test #44: attachment 7 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 255,0,0,0]
+    expected: FAIL
+