From e0938d42338d66787e12d1c544fe586bc5e5a2da Mon Sep 17 00:00:00 2001
From: WPT Sync Bot <josh+wptsync@joshmatthews.net>
Date: Fri, 23 Oct 2020 08:20:58 +0000
Subject: [PATCH] Update web-platform-tests to revision
 4a65f5002f1e2e778f62a9b99f4298dc8948f26c

---
 .../FileAPI/url/url-charset.window.js.ini     |    8 +
 .../CSS2/floats/hit-test-floats-002.html.ini  |    4 +
 ....html.ini => hit-test-floats-003.html.ini} |    2 +-
 .../CSS2/floats/hit-test-floats-005.html.ini  |    4 +
 .../css/cssom-view/CaretPosition-001.html.ini |    4 +
 .../cssom-view/elementFromPosition.html.ini   |    3 -
 .../elementsFromPoint-iframes.html.ini        |    3 -
 .../css/cssom/serialize-media-rule.html.ini   |    5 +-
 .../fetch/content-type/response.window.js.ini |   18 +-
 ...ml.ini => traverse_the_history_2.html.ini} |    2 +-
 .../traverse_the_history_4.html.ini}          |    2 +-
 .../embedded-opener-remove-frame.html.ini     |    4 -
 .../2d.drawImage.zerosource.image.html.ini    |    3 +
 .../2d.drawImage.zerosource.html.ini          |    3 +
 .../2d.drawImage.zerosource.image.html.ini    |    3 +
 ...d.drawImage.zerosource.image.worker.js.ini |    3 +
 .../2d.drawImage.zerosource.worker.js.ini     |    3 +
 .../html/dom/idlharness.https.html.ini        |   21 +
 ...document-under-content-visibility.html.ini |    2 +
 .../iframe_sandbox_popups_escaping-1.html.ini |    2 +-
 .../iframe_sandbox_popups_escaping-2.html.ini |    4 +-
 .../iframe_sandbox_popups_escaping-3.html.ini |    3 +-
 ...rame_sandbox_popups_nonescaping-1.html.ini |    4 +-
 .../document-write/module-delayed.html.ini    |    4 +
 .../promise-job-entry.html.ini                |    3 +-
 .../realtimeanalyser-fft-scaling.html.ini     |    1 +
 .../sub-sample-buffer-stitching.html.ini      |    6 +
 .../tests/switch_to_frame/switch.py.ini       |    9 +-
 .../switch_to_parent_frame/switch.py.ini      |    5 +-
 .../webmessaging/with-ports/017.html.ini      |    5 +
 .../webmessaging/with-ports/018.html.ini      |    5 +
 .../webmessaging/without-ports/017.html.ini   |    5 +
 .../FileAPI/url/url-charset.window.js.ini     |    8 +
 tests/wpt/metadata/MANIFEST.json              | 1442 +++++++++++------
 .../CSS2/floats/hit-test-floats-002.html.ini  |    4 +
 ....html.ini => hit-test-floats-003.html.ini} |    2 +-
 .../CSS2/floats/hit-test-floats-005.html.ini  |    4 +
 .../css/cssom-view/CaretPosition-001.html.ini |    4 +
 .../cssom-view/elementFromPosition.html.ini   |    3 -
 .../elementsFromPoint-iframes.html.ini        |    3 -
 .../css/cssom/serialize-media-rule.html.ini   |    3 +
 ...-block-page-break-inside-avoid-11.html.ini |    3 -
 ...1-float-page-break-inside-avoid-2.html.ini |    3 -
 ...1-float-page-break-inside-avoid-8.html.ini |    3 -
 ...s21-row-page-break-inside-avoid-2.html.ini |    3 -
 .../multicol3/multicol-height-002.xht.ini     |    3 -
 .../fetch/content-type/response.window.js.ini |   18 +-
 .../traverse_the_history_2.html.ini           |    4 +
 .../traverse_the_history_4.html.ini           |    4 +
 .../embedded-opener-remove-frame.html.ini     |    4 -
 .../2d.drawImage.zerosource.image.html.ini    |    3 +
 .../2d.drawImage.zerosource.html.ini          |    3 +
 .../2d.drawImage.zerosource.image.html.ini    |    3 +
 ...d.drawImage.zerosource.image.worker.js.ini |    3 +
 .../2d.drawImage.zerosource.worker.js.ini     |    3 +
 .../html/dom/idlharness.https.html.ini        |   21 +
 ...document-under-content-visibility.html.ini |    2 +
 .../iframe_sandbox_popups_escaping-1.html.ini |    2 +-
 .../iframe_sandbox_popups_escaping-2.html.ini |    4 +-
 .../iframe_sandbox_popups_escaping-3.html.ini |    3 +-
 ...rame_sandbox_popups_nonescaping-1.html.ini |    4 +-
 .../document-write/module-delayed.html.ini    |    4 +
 .../promise-job-entry.html.ini                |    3 +-
 .../realtimeanalyser-fft-scaling.html.ini     |    1 +
 .../sub-sample-buffer-stitching.html.ini      |    6 +
 .../tests/switch_to_frame/switch.py.ini       |    9 +-
 .../switch_to_parent_frame/switch.py.ini      |    3 +
 .../webmessaging/with-ports/017.html.ini      |    5 +
 .../webmessaging/with-ports/018.html.ini      |    5 +
 .../webmessaging/without-ports/017.html.ini   |    5 +
 .../animation-worklet/idlharness.any.js       |    2 +-
 ...html => header-content-type-and-body.html} |   26 +-
 ...ntent-type.py => content-type-and-body.py} |    2 +-
 .../cross-origin-iframe.sub.https.html        |    6 +-
 .../request-from-sandboxed-iframe.https.html  |    6 +-
 .../resources/health-thermometer-iframe.html  |   16 +-
 .../schemeful-websockets.sub.tentative.html   |    9 +-
 .../float-table-align-left-quirk-ref.html     |   34 +
 .../floats/float-table-align-left-quirk.html  |   36 +
 .../js/CSS-supports-CSSStyleDeclaration.html  |  766 +++++++++
 .../webkit-line-clamp-dynamic-001-ref.html    |   16 +
 .../webkit-line-clamp-dynamic-001.html        |   28 +
 .../css/css-paint-api/idlharness.html         |    2 +-
 .../scrollbar-width-parsing.html              |   30 +
 .../properties/scrollbar-gutter.html          |    2 +-
 .../properties/scrollbar-width.html           |   22 +
 .../line-box-height-vlr-003.xht               |    2 +-
 .../line-box-height-vlr-005.xht               |    2 +-
 .../line-box-height-vlr-007.xht               |    2 +-
 .../line-box-height-vlr-009.xht               |    2 +-
 .../line-box-height-vlr-011.xht               |    2 +-
 .../line-box-height-vlr-013.xht               |    2 +-
 .../line-box-height-vlr-021.xht               |    2 +-
 .../line-box-height-vlr-023.xht               |    2 +-
 .../line-box-height-vrl-002.xht               |    2 +-
 .../line-box-height-vrl-004.xht               |    2 +-
 .../line-box-height-vrl-006.xht               |    2 +-
 .../line-box-height-vrl-008.xht               |    2 +-
 .../line-box-height-vrl-010.xht               |    2 +-
 .../line-box-height-vrl-012.xht               |    2 +-
 .../css/cssom/serialize-media-rule.html       |    4 +-
 .../mozilla/mozilla-central-reftests/README   |    7 +-
 ...oz-block-fragmentation-001-print-ref.html} |    0
 ...=> moz-block-fragmentation-001-print.html} |    4 +-
 ...lock-page-break-inside-avoid-1-print.html} |    4 +-
 ...ock-page-break-inside-avoid-10-print.html} |    4 +-
 ...ock-page-break-inside-avoid-11-print.html} |    4 +-
 ...ock-page-break-inside-avoid-12-print.html} |    4 +-
 ...ock-page-break-inside-avoid-13-print.html} |    4 +-
 ...page-break-inside-avoid-14-print-ref.html} |    2 +-
 ...ock-page-break-inside-avoid-14-print.html} |    4 +-
 ...page-break-inside-avoid-15-print-ref.html} |    2 +-
 ...ock-page-break-inside-avoid-15-print.html} |    4 +-
 ...lock-page-break-inside-avoid-2-print.html} |    4 +-
 ...lock-page-break-inside-avoid-3-print.html} |    4 +-
 ...lock-page-break-inside-avoid-4-print.html} |    4 +-
 ...lock-page-break-inside-avoid-5-print.html} |    4 +-
 ...lock-page-break-inside-avoid-6-print.html} |    4 +-
 ...lock-page-break-inside-avoid-7-print.html} |    4 +-
 ...-page-break-inside-avoid-8-print-ref.html} |    2 +-
 ...lock-page-break-inside-avoid-8-print.html} |    4 +-
 ...lock-page-break-inside-avoid-9-print.html} |    4 +-
 ...ck-page-break-inside-avoid-print-ref.html} |    2 +-
 ...loat-page-break-inside-avoid-1-print.html} |    4 +-
 ...-page-break-inside-avoid-2-print-ref.html} |    2 +-
 ...loat-page-break-inside-avoid-2-print.html} |    4 +-
 ...loat-page-break-inside-avoid-3-print.html} |    4 +-
 ...loat-page-break-inside-avoid-4-print.html} |    4 +-
 ...-page-break-inside-avoid-5-print-ref.html} |    2 +-
 ...loat-page-break-inside-avoid-5-print.html} |    4 +-
 ...-page-break-inside-avoid-6-print-ref.html} |    2 +-
 ...loat-page-break-inside-avoid-6-print.html} |    4 +-
 ...-page-break-inside-avoid-7-print-ref.html} |    4 +-
 ...loat-page-break-inside-avoid-7-print.html} |    6 +-
 ...-page-break-inside-avoid-8-print-ref.html} |    4 +-
 ...loat-page-break-inside-avoid-8-print.html} |    6 +-
 ...-page-break-inside-avoid-9-print-ref.html} |    4 +-
 ...loat-page-break-inside-avoid-9-print.html} |    6 +-
 ...-page-break-inside-avoid-1-print-ref.html} |    2 +-
 ...line-page-break-inside-avoid-1-print.html} |    4 +-
 ...-row-page-break-inside-avoid-1-print.html} |    4 +-
 ...-row-page-break-inside-avoid-2-print.html} |    4 +-
 ...roup-page-break-inside-avoid-1-print.html} |    4 +-
 ...roup-page-break-inside-avoid-2-print.html} |    4 +-
 ...roup-page-break-inside-avoid-3-print.html} |    4 +-
 ...-page-break-inside-avoid-4-print-ref.html} |    2 +-
 ...roup-page-break-inside-avoid-4-print.html} |    4 +-
 ...-page-break-inside-avoid-5-print-ref.html} |    2 +-
 ...roup-page-break-inside-avoid-5-print.html} |    4 +-
 ...roup-page-break-inside-avoid-6-print.html} |    4 +-
 ...-page-break-inside-avoid-7-print-ref.html} |    2 +-
 ...roup-page-break-inside-avoid-7-print.html} |    4 +-
 ...-page-break-inside-avoid-8-print-ref.html} |    2 +-
 ...roup-page-break-inside-avoid-8-print.html} |    4 +-
 ...able-page-break-inside-avoid-1-print.html} |    4 +-
 ...-page-break-inside-avoid-2-print-ref.html} |    2 +-
 ...able-page-break-inside-avoid-2-print.html} |    4 +-
 ...-page-break-inside-avoid-3-print-ref.html} |    2 +-
 ...able-page-break-inside-avoid-3-print.html} |    4 +-
 ...-page-break-inside-avoid-4-print-ref.html} |    2 +-
 ...able-page-break-inside-avoid-4-print.html} |    4 +-
 ...-page-break-inside-avoid-5-print-ref.html} |    2 +-
 ...able-page-break-inside-avoid-5-print.html} |    4 +-
 ...-page-break-inside-avoid-6-print-ref.html} |    2 +-
 ...able-page-break-inside-avoid-6-print.html} |    4 +-
 ...-page-break-inside-avoid-7-print-ref.html} |    2 +-
 ...able-page-break-inside-avoid-7-print.html} |    4 +-
 ...able-page-break-inside-avoid-8-print.html} |    4 +-
 ...le-page-break-inside-avoid-print-ref.html} |    2 +-
 .../object-fit-contain-png-001-ref.html       |    2 +-
 .../images3/object-fit-contain-png-001c.html  |    2 +-
 .../images3/object-fit-contain-png-001e.html  |    2 +-
 .../images3/object-fit-contain-png-001i.html  |    2 +-
 .../images3/object-fit-contain-png-001o.html  |    2 +-
 .../images3/object-fit-contain-png-001p.html  |    2 +-
 .../object-fit-contain-png-002-ref.html       |    2 +-
 .../images3/object-fit-contain-png-002c.html  |    2 +-
 .../images3/object-fit-contain-png-002e.html  |    2 +-
 .../images3/object-fit-contain-png-002i.html  |    2 +-
 .../images3/object-fit-contain-png-002o.html  |    2 +-
 .../images3/object-fit-contain-png-002p.html  |    2 +-
 .../images3/object-fit-cover-png-001-ref.html |    2 +-
 .../images3/object-fit-cover-png-001c.html    |    2 +-
 .../images3/object-fit-cover-png-001e.html    |    2 +-
 .../images3/object-fit-cover-png-001i.html    |    2 +-
 .../images3/object-fit-cover-png-001o.html    |    2 +-
 .../images3/object-fit-cover-png-001p.html    |    2 +-
 .../images3/object-fit-cover-png-002-ref.html |    2 +-
 .../images3/object-fit-cover-png-002c.html    |    2 +-
 .../images3/object-fit-cover-png-002e.html    |    2 +-
 .../images3/object-fit-cover-png-002i.html    |    2 +-
 .../images3/object-fit-cover-png-002o.html    |    2 +-
 .../images3/object-fit-cover-png-002p.html    |    2 +-
 .../images3/object-fit-fill-png-001-ref.html  |    2 +-
 .../images3/object-fit-fill-png-001c.html     |    2 +-
 .../images3/object-fit-fill-png-001e.html     |    2 +-
 .../images3/object-fit-fill-png-001i.html     |    2 +-
 .../images3/object-fit-fill-png-001o.html     |    2 +-
 .../images3/object-fit-fill-png-001p.html     |    2 +-
 .../images3/object-fit-fill-png-002-ref.html  |    2 +-
 .../images3/object-fit-fill-png-002c.html     |    2 +-
 .../images3/object-fit-fill-png-002e.html     |    2 +-
 .../images3/object-fit-fill-png-002i.html     |    2 +-
 .../images3/object-fit-fill-png-002o.html     |    2 +-
 .../images3/object-fit-fill-png-002p.html     |    2 +-
 .../images3/object-fit-none-png-001-ref.html  |    2 +-
 .../images3/object-fit-none-png-001c.html     |    2 +-
 .../images3/object-fit-none-png-001e.html     |    2 +-
 .../images3/object-fit-none-png-001i.html     |    2 +-
 .../images3/object-fit-none-png-001o.html     |    2 +-
 .../images3/object-fit-none-png-001p.html     |    2 +-
 .../images3/object-fit-none-png-002-ref.html  |    2 +-
 .../images3/object-fit-none-png-002c.html     |    2 +-
 .../images3/object-fit-none-png-002e.html     |    2 +-
 .../images3/object-fit-none-png-002i.html     |    2 +-
 .../images3/object-fit-none-png-002o.html     |    2 +-
 .../images3/object-fit-none-png-002p.html     |    2 +-
 .../object-fit-scale-down-png-001-ref.html    |    2 +-
 .../object-fit-scale-down-png-001c.html       |    2 +-
 .../object-fit-scale-down-png-001e.html       |    2 +-
 .../object-fit-scale-down-png-001i.html       |    2 +-
 .../object-fit-scale-down-png-001o.html       |    2 +-
 .../object-fit-scale-down-png-001p.html       |    2 +-
 .../object-fit-scale-down-png-002-ref.html    |    2 +-
 .../object-fit-scale-down-png-002c.html       |    2 +-
 .../object-fit-scale-down-png-002e.html       |    2 +-
 .../object-fit-scale-down-png-002i.html       |    2 +-
 .../object-fit-scale-down-png-002o.html       |    2 +-
 .../object-fit-scale-down-png-002p.html       |    2 +-
 .../support/template-object-fit-ref.html      |    2 +-
 .../support/template-object-fit-test.html     |    2 +-
 ....xht => multicol-height-002-print-ref.xht} |    2 +-
 ...-002.xht => multicol-height-002-print.xht} |    4 +-
 .../docs/writing-tests/general-guidelines.md  |   31 +-
 .../TreeWalker-acceptNode-filter.html         |    2 +-
 .../dom/traversal/TreeWalker-basic.html       |    2 +-
 .../dom/traversal/TreeWalker-currentNode.html |    2 +-
 ...reeWalker-previousNodeLastChildReject.html |    2 +-
 ...eeWalker-previousSiblingLastChildSkip.html |    2 +-
 .../TreeWalker-traversal-reject.html          |    2 +-
 .../TreeWalker-traversal-skip-most.html       |    2 +-
 .../traversal/TreeWalker-traversal-skip.html  |    2 +-
 ...n-html-element-having-contenteditable.html |  151 ++
 .../history/the-history-interface/007.html    |   10 +
 .../iframe-cross-origin-print.sub.html        |    6 +
 .../resources/iframe-nested-cross-origin.html |    2 +
 .../2d.drawImage.zerosource.image.html        |   10 +-
 .../2d.drawImage.zerosource.html              |   10 +-
 .../2d.drawImage.zerosource.image.html        |   10 +-
 .../2d.drawImage.zerosource.image.worker.js   |   10 +-
 .../2d.drawImage.zerosource.worker.js         |   10 +-
 .../element/drawing-images-to-the-canvas.yaml |    8 +-
 .../drawing-images-to-the-canvas.yaml         |   16 +-
 .../fieldset-percent-height.html              |   22 -
 .../fieldset-percentage-block-size.html       |   19 +
 ...bed-document-under-content-visibility.html |   25 +
 .../web-platform-tests/interfaces/html.idl    |   12 +
 .../interfaces/worklets.idl                   |   16 -
 ...cit-root-different-document.tentative.html |   27 +
 ...t-in-containing-block-chain.tentative.html |   25 +
 .../target-in-different-window.html           |    4 +
 .../loading/preloader-template.tentative.html |   35 +
 .../loading/resources/dummy.js                |    1 +
 .../longtask-before-observer.window.js        |   16 +
 .../operators/largeop-hit-testing.html        |   63 +
 .../padding-border-margin-002-ref.html        |   18 +
 .../padding-border-margin-002.html            |   34 +
 .../Microsoft/history/history_000.htm         |   70 +-
 .../pointerevent_drag_interaction-manual.html |   34 +-
 .../selection/select-internal.html            |   34 +
 .../web-platform-tests/svg/historical.html    |   17 +
 .../svg/idlharness.window.js                  |   33 -
 .../ci/azure/safari-technology-preview.rb     |    8 +-
 .../web-platform-tests/tools/wpt/testfiles.py |    2 +-
 .../tests/functional/test_handlers.py         |    1 -
 .../wptserve/tests/functional/test_pipes.py   |    7 +-
 .../webaudio/idlharness.https.window.js       |    2 -
 ...ementAudioSourceToScriptProcessorTest.html |    2 +-
 .../tests/release_actions/release.py          |    2 +-
 .../webdriver/tests/switch_to_frame/switch.py |   16 +-
 .../tests/switch_to_parent_frame/switch.py    |   23 +-
 .../RTCPeerConnection-iceGatheringState.html  |   11 +
 282 files changed, 3027 insertions(+), 1009 deletions(-)
 create mode 100644 tests/wpt/metadata-layout-2020/FileAPI/url/url-charset.window.js.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
 rename tests/wpt/metadata-layout-2020/css/CSS2/floats/{hit-test-floats-004.html.ini => hit-test-floats-003.html.ini} (67%)
 create mode 100644 tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/css/cssom-view/CaretPosition-001.html.ini
 rename tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/{traverse_the_history_5.html.ini => traverse_the_history_2.html.ini} (71%)
 rename tests/wpt/{metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini => metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini} (71%)
 create mode 100644 tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
 create mode 100644 tests/wpt/metadata-layout-2020/webmessaging/with-ports/017.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
 create mode 100644 tests/wpt/metadata/FileAPI/url/url-charset.window.js.ini
 create mode 100644 tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
 rename tests/wpt/metadata/css/CSS2/floats/{hit-test-floats-004.html.ini => hit-test-floats-003.html.ini} (67%)
 create mode 100644 tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
 create mode 100644 tests/wpt/metadata/css/cssom-view/CaretPosition-001.html.ini
 delete mode 100644 tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11.html.ini
 delete mode 100644 tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2.html.ini
 delete mode 100644 tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8.html.ini
 delete mode 100644 tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2.html.ini
 delete mode 100644 tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002.xht.ini
 create mode 100644 tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
 create mode 100644 tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
 create mode 100644 tests/wpt/metadata/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html.ini
 create mode 100644 tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
 create mode 100644 tests/wpt/metadata/webmessaging/with-ports/017.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
 rename tests/wpt/web-platform-tests/beacon/headers/{header-content-type.html => header-content-type-and-body.html} (61%)
 rename tests/wpt/web-platform-tests/beacon/resources/{content-type.py => content-type-and-body.py} (92%)
 create mode 100644 tests/wpt/web-platform-tests/css/CSS2/floats/float-table-align-left-quirk-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/CSS2/floats/float-table-align-left-quirk.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-conditional/js/CSS-supports-CSSStyleDeclaration.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-overflow/reference/webkit-line-clamp-dynamic-001-ref.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-overflow/webkit-line-clamp-dynamic-001.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-scrollbars/scrollbar-width-parsing.html
 create mode 100644 tests/wpt/web-platform-tests/css/css-typed-om/the-stylepropertymap/properties/scrollbar-width.html
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/{moz-block-fragmentation-001-ref.html => moz-block-fragmentation-001-print-ref.html} (100%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/{moz-block-fragmentation-001.html => moz-block-fragmentation-001-print.html} (84%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-1.html => moz-css21-block-page-break-inside-avoid-1-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-10.html => moz-css21-block-page-break-inside-avoid-10-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-11.html => moz-css21-block-page-break-inside-avoid-11-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-12.html => moz-css21-block-page-break-inside-avoid-12-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-13.html => moz-css21-block-page-break-inside-avoid-13-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-14-ref.html => moz-css21-block-page-break-inside-avoid-14-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-14.html => moz-css21-block-page-break-inside-avoid-14-print.html} (91%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-15-ref.html => moz-css21-block-page-break-inside-avoid-15-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-15.html => moz-css21-block-page-break-inside-avoid-15-print.html} (91%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-2.html => moz-css21-block-page-break-inside-avoid-2-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-3.html => moz-css21-block-page-break-inside-avoid-3-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-4.html => moz-css21-block-page-break-inside-avoid-4-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-5.html => moz-css21-block-page-break-inside-avoid-5-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-6.html => moz-css21-block-page-break-inside-avoid-6-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-7.html => moz-css21-block-page-break-inside-avoid-7-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-8-ref.html => moz-css21-block-page-break-inside-avoid-8-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-8.html => moz-css21-block-page-break-inside-avoid-8-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-9.html => moz-css21-block-page-break-inside-avoid-9-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-block-page-break-inside-avoid-ref.html => moz-css21-block-page-break-inside-avoid-print-ref.html} (91%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-1.html => moz-css21-float-page-break-inside-avoid-1-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-2-ref.html => moz-css21-float-page-break-inside-avoid-2-print-ref.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-2.html => moz-css21-float-page-break-inside-avoid-2-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-3.html => moz-css21-float-page-break-inside-avoid-3-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-4.html => moz-css21-float-page-break-inside-avoid-4-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-5-ref.html => moz-css21-float-page-break-inside-avoid-5-print-ref.html} (95%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-5.html => moz-css21-float-page-break-inside-avoid-5-print.html} (94%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-6-ref.html => moz-css21-float-page-break-inside-avoid-6-print-ref.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-6.html => moz-css21-float-page-break-inside-avoid-6-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-7-ref.html => moz-css21-float-page-break-inside-avoid-7-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-7.html => moz-css21-float-page-break-inside-avoid-7-print.html} (91%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-8-ref.html => moz-css21-float-page-break-inside-avoid-8-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-8.html => moz-css21-float-page-break-inside-avoid-8-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-9-ref.html => moz-css21-float-page-break-inside-avoid-9-print-ref.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-float-page-break-inside-avoid-9.html => moz-css21-float-page-break-inside-avoid-9-print.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-inline-page-break-inside-avoid-1-ref.html => moz-css21-inline-page-break-inside-avoid-1-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-inline-page-break-inside-avoid-1.html => moz-css21-inline-page-break-inside-avoid-1-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-row-page-break-inside-avoid-1.html => moz-css21-row-page-break-inside-avoid-1-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-row-page-break-inside-avoid-2.html => moz-css21-row-page-break-inside-avoid-2-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-1.html => moz-css21-rowgroup-page-break-inside-avoid-1-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-2.html => moz-css21-rowgroup-page-break-inside-avoid-2-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-3.html => moz-css21-rowgroup-page-break-inside-avoid-3-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-4-ref.html => moz-css21-rowgroup-page-break-inside-avoid-4-print-ref.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-4.html => moz-css21-rowgroup-page-break-inside-avoid-4-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-5-ref.html => moz-css21-rowgroup-page-break-inside-avoid-5-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-5.html => moz-css21-rowgroup-page-break-inside-avoid-5-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-6.html => moz-css21-rowgroup-page-break-inside-avoid-6-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-7-ref.html => moz-css21-rowgroup-page-break-inside-avoid-7-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-7.html => moz-css21-rowgroup-page-break-inside-avoid-7-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-8-ref.html => moz-css21-rowgroup-page-break-inside-avoid-8-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-rowgroup-page-break-inside-avoid-8.html => moz-css21-rowgroup-page-break-inside-avoid-8-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-1.html => moz-css21-table-page-break-inside-avoid-1-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-2-ref.html => moz-css21-table-page-break-inside-avoid-2-print-ref.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-2.html => moz-css21-table-page-break-inside-avoid-2-print.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-3-ref.html => moz-css21-table-page-break-inside-avoid-3-print-ref.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-3.html => moz-css21-table-page-break-inside-avoid-3-print.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-4-ref.html => moz-css21-table-page-break-inside-avoid-4-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-4.html => moz-css21-table-page-break-inside-avoid-4-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-5-ref.html => moz-css21-table-page-break-inside-avoid-5-print-ref.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-5.html => moz-css21-table-page-break-inside-avoid-5-print.html} (93%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-6-ref.html => moz-css21-table-page-break-inside-avoid-6-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-6.html => moz-css21-table-page-break-inside-avoid-6-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-7-ref.html => moz-css21-table-page-break-inside-avoid-7-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-7.html => moz-css21-table-page-break-inside-avoid-7-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-8.html => moz-css21-table-page-break-inside-avoid-8-print.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/{moz-css21-table-page-break-inside-avoid-ref.html => moz-css21-table-page-break-inside-avoid-print-ref.html} (92%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/{reference/multicol-height-002.xht => multicol-height-002-print-ref.xht} (97%)
 rename tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/{multicol-height-002.xht => multicol-height-002-print.xht} (94%)
 create mode 100644 tests/wpt/web-platform-tests/editing/other/select-all-and-delete-in-html-element-having-contenteditable.html
 create mode 100644 tests/wpt/web-platform-tests/html/browsers/windows/iframe-cross-origin-print.sub.html
 create mode 100644 tests/wpt/web-platform-tests/html/browsers/windows/resources/iframe-nested-cross-origin.html
 delete mode 100644 tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-percent-height.html
 create mode 100644 tests/wpt/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html
 delete mode 100644 tests/wpt/web-platform-tests/interfaces/worklets.idl
 create mode 100644 tests/wpt/web-platform-tests/intersection-observer/explicit-root-different-document.tentative.html
 create mode 100644 tests/wpt/web-platform-tests/intersection-observer/not-in-containing-block-chain.tentative.html
 create mode 100644 tests/wpt/web-platform-tests/loading/preloader-template.tentative.html
 create mode 100644 tests/wpt/web-platform-tests/loading/resources/dummy.js
 create mode 100644 tests/wpt/web-platform-tests/longtask-timing/longtask-before-observer.window.js
 create mode 100644 tests/wpt/web-platform-tests/mathml/presentation-markup/operators/largeop-hit-testing.html
 create mode 100644 tests/wpt/web-platform-tests/mathml/relations/css-styling/padding-border-margin/padding-border-margin-002-ref.html
 create mode 100644 tests/wpt/web-platform-tests/mathml/relations/css-styling/padding-border-margin/padding-border-margin-002.html
 create mode 100644 tests/wpt/web-platform-tests/selection/select-internal.html

diff --git a/tests/wpt/metadata-layout-2020/FileAPI/url/url-charset.window.js.ini b/tests/wpt/metadata-layout-2020/FileAPI/url/url-charset.window.js.ini
new file mode 100644
index 00000000000..a9005e45d6e
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/FileAPI/url/url-charset.window.js.ini
@@ -0,0 +1,8 @@
+[url-charset.window.html]
+  expected: TIMEOUT
+  [Blob charset should override any auto-detected charset.]
+    expected: TIMEOUT
+
+  [Blob charset should override <meta charset>.]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
new file mode 100644
index 00000000000..f64b45fea6b
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-002.html]
+  [Hit test float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
similarity index 67%
rename from tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
rename to tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
index 4bfb0c2053a..f29da48a2a0 100644
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
@@ -1,4 +1,4 @@
-[hit-test-floats-004.html]
+[hit-test-floats-003.html]
   [Miss float below something else]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
new file mode 100644
index 00000000000..baa9f1a7541
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-005.html]
+  [Miss clipped float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/cssom-view/CaretPosition-001.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/CaretPosition-001.html.ini
new file mode 100644
index 00000000000..4c79907309b
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/cssom-view/CaretPosition-001.html.ini
@@ -0,0 +1,4 @@
+[CaretPosition-001.html]
+  [Element at (400, 100)]
+    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 6ef8bb1049f..171592fc08f 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
@@ -2,6 +2,3 @@
   [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/serialize-media-rule.html.ini b/tests/wpt/metadata-layout-2020/css/cssom/serialize-media-rule.html.ini
index c0253da1005..1715f79ed09 100644
--- a/tests/wpt/metadata-layout-2020/css/cssom/serialize-media-rule.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/cssom/serialize-media-rule.html.ini
@@ -8,15 +8,12 @@
   [type - omission of all]
     expected: FAIL
 
-  [one rule]
-    expected: FAIL
-
   [media query list]
     expected: FAIL
 
   [type - inclusion of negated all]
     expected: FAIL
 
-  [many rules]
+  [features - no lexicographical sorting]
     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 6b3f7fb96c3..a49f9c9d78c 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
@@ -312,24 +312,24 @@
   [Response: combined response Content-Type: text/html;" \\" text/plain ";charset=GBK]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: text/html;" text/plain]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/plain */*]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html */*]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html */*]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
+  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
+    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_2.html.ini
similarity index 71%
rename from tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
rename to tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
index dc2e45516de..75d75b4cda2 100644
--- a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_5.html]
+[traverse_the_history_2.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/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_4.html.ini
similarity index 71%
rename from tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
rename to tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
index dc2e45516de..385376c7321 100644
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_5.html]
+[traverse_the_history_4.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
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 8e2a63e3b7f..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
@@ -1,8 +1,4 @@
 [embedded-opener-remove-frame.html]
-  expected: CRASH
   [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/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini b/tests/wpt/metadata-layout-2020/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
index c1ee61dcd49..76d431df3a0 100644
--- a/tests/wpt/metadata-layout-2020/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle from image draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html.ini b/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html.ini
index ead7f5f5ad8..efa68741600 100644
--- a/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini b/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
index c1ee61dcd49..76d431df3a0 100644
--- a/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle from image draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js.ini b/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js.ini
index 341b1b43e6f..6f5d45f8dd9 100644
--- a/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js.ini
+++ b/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle from image draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js.ini b/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js.ini
index 9160e3ad144..a9d64261e96 100644
--- a/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js.ini
+++ b/tests/wpt/metadata-layout-2020/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/dom/idlharness.https.html.ini b/tests/wpt/metadata-layout-2020/html/dom/idlharness.https.html.ini
index 0208c7d1560..d8dc617a176 100644
--- a/tests/wpt/metadata-layout-2020/html/dom/idlharness.https.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/dom/idlharness.https.html.ini
@@ -1223,6 +1223,27 @@
   [ElementInternals interface: attribute shadowRoot]
     expected: FAIL
 
+  [Worklet interface object length]
+    expected: FAIL
+
+  [Worklet interface: existence and properties of interface object]
+    expected: FAIL
+
+  [Worklet interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [Worklet interface object name]
+    expected: FAIL
+
+  [Worklet interface: operation addModule(USVString, optional WorkletOptions)]
+    expected: FAIL
+
+  [Worklet interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [Worklet interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
 
 [idlharness.https.html?include=(Document|Window)]
   [Document interface: documentWithHandlers must inherit property "queryCommandEnabled(DOMString)" with the proper type]
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html.ini
new file mode 100644
index 00000000000..a22a706bade
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html.ini
@@ -0,0 +1,2 @@
+[embed-document-under-content-visibility.html]
+  expected: ERROR
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index 42ebcc9d57e..88f4ddd0e9a 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-1.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
index daa518bd0e3..c6f45be1eb2 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-2.html]
-  expected: CRASH
+  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_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 0c89d5253df..d913fcbb129 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: CRASH
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini b/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
new file mode 100644
index 00000000000..59a54fe88e4
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
@@ -0,0 +1,4 @@
+[module-delayed.html]
+  [async document.write in a module]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
index a1effd5f801..d16e3ccb769 100644
--- a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
@@ -1,4 +1,5 @@
 [promise-job-entry.html]
+  expected: TIMEOUT
   [Fulfillment handler on fulfilled promise]
     expected: FAIL
 
@@ -15,5 +16,5 @@
     expected: FAIL
 
   [Fulfillment handler on pending-then-fulfilled promise]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
index 66bd350083b..a56bad443a2 100644
--- a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
@@ -1,4 +1,5 @@
 [realtimeanalyser-fft-scaling.html]
+  expected: TIMEOUT
   [X 2048-point FFT peak position is not equal to 64. Got 0.]
     expected: FAIL
 
diff --git a/tests/wpt/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 81af5dac94b..1e119e6e235 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
@@ -176,3 +176,9 @@
   [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\]\t1.7380608709161053e-27\t9.3139332532882690e-1\t9.3139332532882690e-1\t1.0000000000000000e+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 9.3139332532882690e-1 at index of 28696.\n\tMax RelError of 1.0000000000000000e+0 at index of 28696.\n]
     expected: FAIL
 
+  [X SNR (-95.67336535132387 dB) is not greater than or equal to 65.737. Got -95.67336535132387.]
+    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-9.0234480000000000e+6\t9.3139332532882690e-1\t9.0234489313933253e+6\t9.6881185273768324e+6\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 9.0234489313933253e+6 at index of 28696.\n\tMax RelError of 9.6881185273768324e+6 at index of 28696.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webdriver/tests/switch_to_frame/switch.py.ini b/tests/wpt/metadata-layout-2020/webdriver/tests/switch_to_frame/switch.py.ini
index 5038bc99cc2..b44de3852a9 100644
--- a/tests/wpt/metadata-layout-2020/webdriver/tests/switch_to_frame/switch.py.ini
+++ b/tests/wpt/metadata-layout-2020/webdriver/tests/switch_to_frame/switch.py.ini
@@ -6,13 +6,13 @@
     expected: ERROR
 
   [test_no_top_browsing_context[id2\]]
-    expected: ERROR
+    expected: FAIL
 
   [test_no_top_browsing_context[None\]]
-    expected: ERROR
+    expected: FAIL
 
   [test_no_top_browsing_context[0\]]
-    expected: ERROR
+    expected: FAIL
 
   [test_no_browsing_context[None\]]
     expected: ERROR
@@ -23,3 +23,6 @@
   [test_no_browsing_context[id2\]]
     expected: ERROR
 
+  [test_no_browsing_context_when_already_top_level]
+    expected: ERROR
+
diff --git a/tests/wpt/metadata-layout-2020/webdriver/tests/switch_to_parent_frame/switch.py.ini b/tests/wpt/metadata-layout-2020/webdriver/tests/switch_to_parent_frame/switch.py.ini
index ed61b0f797f..62ae3f4a719 100644
--- a/tests/wpt/metadata-layout-2020/webdriver/tests/switch_to_parent_frame/switch.py.ini
+++ b/tests/wpt/metadata-layout-2020/webdriver/tests/switch_to_parent_frame/switch.py.ini
@@ -6,8 +6,11 @@
     expected: FAIL
 
   [test_no_top_browsing_context]
-    expected: ERROR
+    expected: FAIL
 
   [test_no_browsing_context]
     expected: ERROR
 
+  [test_no_browsing_context_when_already_top_level]
+    expected: ERROR
+
diff --git a/tests/wpt/metadata-layout-2020/webmessaging/with-ports/017.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/017.html.ini
new file mode 100644
index 00000000000..064cf47545b
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webmessaging/with-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-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-charset.window.js.ini b/tests/wpt/metadata/FileAPI/url/url-charset.window.js.ini
new file mode 100644
index 00000000000..a9005e45d6e
--- /dev/null
+++ b/tests/wpt/metadata/FileAPI/url/url-charset.window.js.ini
@@ -0,0 +1,8 @@
+[url-charset.window.html]
+  expected: TIMEOUT
+  [Blob charset should override any auto-detected charset.]
+    expected: TIMEOUT
+
+  [Blob charset should override <meta charset>.]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 2919214c87b..2cdb7142f21 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -14152,311 +14152,6 @@
     "vendor-imports": {
      "mozilla": {
       "mozilla-central-reftests": {
-       "css21": {
-        "pagination": {
-         "moz-css21-block-page-break-inside-avoid-1.html": [
-          "2606712469527d8c874f541eee1b6c5da80215b7",
-          [
-           null,
-           {}
-          ]
-         ],
-         "moz-css21-block-page-break-inside-avoid-10.html": [
-          "89b48c5790f0556529974252f55dba719546799e",
-          [
-           null,
-           {}
-          ]
-         ],
-         "moz-css21-block-page-break-inside-avoid-11.html": [
-          "6bd65bf00ffce9dac23919827c1e65a61a0c50dc",
-          [
-           null,
-           {}
-          ]
-         ],
-         "moz-css21-block-page-break-inside-avoid-12.html": [
-          "8b7c7c3b3573359190d1f33d2918668c18dfded9",
-          [
-           null,
-           {}
-          ]
-         ],
-         "moz-css21-block-page-break-inside-avoid-13.html": [
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+      "1ec9117a2d1c1b6ddef84d75db7427e73a37dd9c",
       []
      ],
      "github-intro.md": [
@@ -336503,6 +336827,10 @@
         "a437fecb2c443b1cfdbc8813b166c0293aec2504",
         []
        ],
+       "iframe-nested-cross-origin.html": [
+        "a1a66ed842542fe7fbc62ac3a444264790b2dfef",
+        []
+       ],
        "message-parent.html": [
         "ba60618ad4325e2980bba71683378b11b26a7dce",
         []
@@ -337717,7 +338045,7 @@
          []
         ],
         "drawing-images-to-the-canvas.yaml": [
-         "208f1289f13b39da2e0704c6e2d8c140c4bde38d",
+         "e71f46f61e2fe999981a04120ba2b17b5c5ff2cc",
          []
         ],
         "drawing-rectangles-to-the-canvas.yaml": [
@@ -337787,7 +338115,7 @@
          []
         ],
         "drawing-images-to-the-canvas.yaml": [
-         "61cdd407fedbe0aca6a3e8575684e5976661faec",
+         "a16518864eed7dac41cbc20207fcc211db2501ab",
          []
         ],
         "drawing-rectangles-to-the-canvas.yaml": [
@@ -348287,7 +348615,7 @@
      []
     ],
     "html.idl": [
-     "37124323e51c25af79ce62ffe017a645c98a6bee",
+     "bf8da3733ec26f4979fed63a17a9180c3355a494",
      []
     ],
     "idle-detection.tentative.idl": [
@@ -348718,10 +349046,6 @@
      "c1b7175765d788b9981d5bd0a6640b46cafb7cb2",
      []
     ],
-    "worklets.idl": [
-     "9c12f6ff9251a67b46ad3050f04388ca3c3c2e61",
-     []
-    ],
     "xhr.idl": [
      "d6d8193e1c36b71bd09c9cedf1b72fa4365d50c8",
      []
@@ -348954,6 +349278,10 @@
      "dummy.css": [
       "30ff5636e245c14e50145821bc5763c849c6beec",
       []
+     ],
+     "dummy.js": [
+      "3cae1be79e47668e89f91d54ae74a992f0f87f2d",
+      []
      ]
     }
    },
@@ -349484,6 +349812,10 @@
        "padding-border-margin-001-ref.html": [
         "150a650bc28434f1811d3d40747d074146ec4a30",
         []
+       ],
+       "padding-border-margin-002-ref.html": [
+        "e13a9f47ff4f68fd1486123735111079989165cf",
+        []
        ]
       },
       "presentational-hints-001-ref.html": [
@@ -359313,7 +359645,7 @@
        []
       ],
       "safari-technology-preview.rb": [
-       "1a3620529c0403522a3ace06f9f1606d1633c5f8",
+       "115dd1b8f210b639a69a8f3cfa21f4edf7579243",
        []
       ],
       "system_info.yml": [
@@ -365848,7 +366180,7 @@
       []
      ],
      "testfiles.py": [
-      "7f966a625262f900f50064c0949ee3f39f202c93",
+      "4d10878d9d5f57310fe0d7300d312fcae67f193c",
       []
      ],
      "tests": {
@@ -366880,7 +367212,7 @@
         []
        ],
        "test_handlers.py": [
-        "8c0e020f41467ac8df2ddba52470914979ae20bf",
+        "261bf3be2c2f728264ee86f969932441f28750a6",
         []
        ],
        "test_input_file.py": [
@@ -366888,7 +367220,7 @@
         []
        ],
        "test_pipes.py": [
-        "0c487c57d4d48bfa02692f5f5b4d0e25c7467ce1",
+        "a00de71d7968551671040a01c5bd5f76abe2b5a7",
         []
        ],
        "test_request.py": [
@@ -385201,7 +385533,7 @@
      ]
     ],
     "idlharness.any.js": [
-     "3517ffc896897c21815c7338035644038bb0e118",
+     "a53ac739f3319e744b01ace51e56507222bfd424",
      [
       "animation-worklet/idlharness.any.html",
       {
@@ -386007,8 +386339,8 @@
      ]
     ],
     "headers": {
-     "header-content-type.html": [
-      "e2f2705ee64943cc595a1cc12488270db83c40fc",
+     "header-content-type-and-body.html": [
+      "0369cffdf473e760003331636b86d8280c342d96",
       [
        null,
        {}
@@ -388097,7 +388429,7 @@
       ]
      },
      "cross-origin-iframe.sub.https.html": [
-      "543c8a586e9148c4c7462f437a3d914ee23d1942",
+      "f3fc924ea708ab72ad0d9625ecb82137045c6252",
       [
        null,
        {
@@ -388178,7 +388510,7 @@
       ]
      ],
      "request-from-sandboxed-iframe.https.html": [
-      "26291b3b4c1589cb40ecc54a3a363e2594a650c1",
+      "21f2cf1c9c6b783b529a6b64bad0c2339f4d2bdf",
       [
        null,
        {
@@ -396821,7 +397153,7 @@
       ]
      ],
      "schemeful-websockets.sub.tentative.html": [
-      "8e7c073c997ad4a60b7f6f551328d879c887a2b8",
+      "2626d1cd9e8e9eaebf6548f37acfcb47827b1818",
       [
        null,
        {}
@@ -400472,6 +400804,13 @@
         {}
        ]
       ],
+      "CSS-supports-CSSStyleDeclaration.html": [
+       "3a9786c510dedc80cf7a5af143960fbeb7a09371",
+       [
+        null,
+        {}
+       ]
+      ],
       "CSS-supports.html": [
        "dbe9506de149be2fbb1e28d1b334dbdd5dcbbbe6",
        [
@@ -408540,7 +408879,7 @@
     },
     "css-paint-api": {
      "idlharness.html": [
-      "5532779d29f46de9382bb9340c6c522adfe89e4e",
+      "3c4aa98d6150717c861842b0a2f1bf90b7fa7c4b",
       [
        null,
        {
@@ -410486,6 +410825,13 @@
        null,
        {}
       ]
+     ],
+     "scrollbar-width-parsing.html": [
+      "2d45fe230a4b8ae22a64aea12d7a9ae72f98bfcc",
+      [
+       null,
+       {}
+      ]
      ]
     },
     "css-shadow-parts": {
@@ -418178,7 +418524,14 @@
         ]
        ],
        "scrollbar-gutter.html": [
-        "5bf8cb07dd8412f1c709031920b5f7b8ef837957",
+        "aeab1cb1143f7d39c3858adaf958f0e5032600dd",
+        [
+         null,
+         {}
+        ]
+       ],
+       "scrollbar-width.html": [
+        "19a6ebd5b95203b8d9ff8eea6389d25c5a4240b1",
         [
          null,
          {}
@@ -421069,7 +421422,7 @@
       ]
      ],
      "serialize-media-rule.html": [
-      "94b37dc1a95f12dd36e59bae82ab9e2c42e9ed1a",
+      "90561fdf70971874adc8db08144a421d03392608",
       [
        null,
        {}
@@ -427569,56 +427922,56 @@
       ]
      ],
      "TreeWalker-acceptNode-filter.html": [
-      "acd3804fade0e7e4a3735cc68276ea5669416407",
+      "282dc9d142b15515463ece25255d5bd6f5ef18be",
       [
        null,
        {}
       ]
      ],
      "TreeWalker-basic.html": [
-      "4e14ac421ef5e998754f5b330c8f51367522766e",
+      "bd8b1128408c93b63c6a6b19529f35a2ac6645a9",
       [
        null,
        {}
       ]
      ],
      "TreeWalker-currentNode.html": [
-      "7c5d8810a86b8310499925f8d68ef4d6685e7e76",
+      "f795abe0d2924adb4b159c07968b2d6c6115125e",
       [
        null,
        {}
       ]
      ],
      "TreeWalker-previousNodeLastChildReject.html": [
-      "0147b81112ef72279ca16cc5532fd89a5e2dca37",
+      "e24ca06e2095462cf69737354b25e3d70dcd08fa",
       [
        null,
        {}
       ]
      ],
      "TreeWalker-previousSiblingLastChildSkip.html": [
-      "5566564d2403a71dd6951094124657d39be4024a",
+      "5e28aa5142f5e6600dd4c5d28e1d1677a451f662",
       [
        null,
        {}
       ]
      ],
      "TreeWalker-traversal-reject.html": [
-      "53b734188c477b4be63cb2b667d13bf5a35252fa",
+      "d6c96adc114f6b8c131ee0e8bf494686bb364da8",
       [
        null,
        {}
       ]
      ],
      "TreeWalker-traversal-skip-most.html": [
-      "173922c15e6827a79adb4ecaf10ea548c4075c24",
+      "b6eafd459682e9e7dd029c96dc46e134fe02a4e8",
       [
        null,
        {}
       ]
      ],
      "TreeWalker-traversal-skip.html": [
-      "8c6f2bf22be0b31bba84b14f5b5518cbeac87855",
+      "6bbebe667ea5ee60a8e9699d79726a61b5c59ab5",
       [
        null,
        {}
@@ -428079,6 +428432,15 @@
        {}
       ]
      ],
+     "select-all-and-delete-in-html-element-having-contenteditable.html": [
+      "e8eb5e5e1abf53e61eac1e6fe871935a8ee14e5c",
+      [
+       null,
+       {
+        "testdriver": true
+       }
+      ]
+     ],
      "white-spaces-after-execCommand-delete.tentative.html": [
       "6aafdddcef01b9fb77a3bfd7f9343170a653913b",
       [
@@ -447866,7 +448228,7 @@
         ]
        ],
        "007.html": [
-        "29ed8bf0e00aa3d74c39f43a1fed38089664eda0",
+        "decb197624ceafd9103634ded675b518976f83c4",
         [
          null,
          {
@@ -450588,7 +450950,7 @@
         ]
        ],
        "2d.drawImage.zerosource.image.html": [
-        "f358d8e2a775caa9827de41f7887befc5d3f5e8e",
+        "8739265a8b25c7c6e41cb127cebd3e336dad2162",
         [
          null,
          {}
@@ -457478,7 +457840,7 @@
         ]
        ],
        "2d.drawImage.zerosource.html": [
-        "3ff3c974fadb24a6034a385d836665a94afcf31c",
+        "d83a935dcf2d47c1a7055dc593179b9f4bcaade4",
         [
          null,
          {
@@ -457487,7 +457849,7 @@
         ]
        ],
        "2d.drawImage.zerosource.image.html": [
-        "ee2e00ffb9215ec021c0988bbba2ad46d59cd8de",
+        "3a9a1c6f7a3284d0a87abab579b69b1afdbd9aec",
         [
          null,
          {
@@ -457496,14 +457858,14 @@
         ]
        ],
        "2d.drawImage.zerosource.image.worker.js": [
-        "f89490da88239d04f68d5fe436c258f23870ef3c",
+        "200a311f7b24bbc517aba78925787a58b7e6a3cb",
         [
          "html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.html",
          {}
         ]
        ],
        "2d.drawImage.zerosource.worker.js": [
-        "5b27ad754614b1387ec3fd271520c023e88e6075",
+        "37ef6d87352571d49d9c7d30f08c5e52b87dab16",
         [
          "html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.html",
          {}
@@ -470638,15 +471000,8 @@
          {}
         ]
        ],
-       "fieldset-percent-height.html": [
-        "bbe40785be2f0738896e648ce23bc90b9f50c558",
-        [
-         null,
-         {}
-        ]
-       ],
        "fieldset-percentage-block-size.html": [
-        "1c221555c305bd9039558389b3f22ee00d65f8b9",
+        "e98de892d3092b337308522c19cc173650036912",
         [
          null,
          {}
@@ -474662,6 +475017,13 @@
          {}
         ]
        ],
+       "embed-document-under-content-visibility.html": [
+        "26a77918e0c6653cd168cd09bc1945d2851a8562",
+        [
+         null,
+         {}
+        ]
+       ],
        "embed-document.html": [
         "3d44678cf161a2b9b252d31f2a66db37979d89de",
         [
@@ -486811,6 +487173,13 @@
       {}
      ]
     ],
+    "explicit-root-different-document.tentative.html": [
+     "15c5e620d5beaadfaa0600049a9492be367d12b8",
+     [
+      null,
+      {}
+     ]
+    ],
     "idlharness.window.js": [
      "2059e1ce638b5f2cac4e4f013c567a56894599a0",
      [
@@ -486906,6 +487275,13 @@
       {}
      ]
     ],
+    "not-in-containing-block-chain.tentative.html": [
+     "4490d0b631ec2e9e95f8d63e1b51df28180d7e99",
+     [
+      null,
+      {}
+     ]
+    ],
     "observer-attributes.html": [
      "9d0b788b331313046045bac564ae18887b02533f",
      [
@@ -487012,7 +487388,7 @@
      ]
     ],
     "target-in-different-window.html": [
-     "645b7ec1908cc2788c8196786537ec5a4f305f88",
+     "fcf5ba94372beaa330d13b981d066cb0b76334a2",
      [
       null,
       {}
@@ -488353,6 +488729,13 @@
       null,
       {}
      ]
+    ],
+    "preloader-template.tentative.html": [
+     "e816309184844a6d46a20e1152c9efca80fe6f0b",
+     [
+      null,
+      {}
+     ]
     ]
    },
    "longtask-timing": {
@@ -488409,6 +488792,13 @@
       {}
      ]
     ],
+    "longtask-before-observer.window.js": [
+     "b7d4eb9d1de1ac1b91a2e6c9b5d124413b6dc0b9",
+     [
+      "longtask-timing/longtask-before-observer.window.html",
+      {}
+     ]
+    ],
     "longtask-in-childiframe-crossorigin.html": [
      "d0fdf742804d722a6682e8f2b455284dc83fa4b9",
      [
@@ -488725,6 +489115,13 @@
         {}
        ]
       ],
+      "largeop-hit-testing.html": [
+       "4f6a7782f2797294b6f4ea3739df399312838101",
+       [
+        null,
+        {}
+       ]
+      ],
       "mo-axis-height-1.html": [
        "3b28d976f0cf999fe4fd1f684696823eaff47749",
        [
@@ -495726,7 +496123,7 @@
       },
       "history": {
        "history_000.htm": [
-        "d592f10dc2fed5bd92372f08e024ede93fcc56c4",
+        "0e335c7deb18ed7cc9cdde4f4394c116c6bb15b0",
         [
          null,
          {}
@@ -513383,6 +513780,15 @@
       {}
      ]
     ],
+    "select-internal.html": [
+     "305e26d4057c066758dc587d7180b809ed9c9da7",
+     [
+      null,
+      {
+       "testdriver": true
+      }
+     ]
+    ],
     "selectAllChildren.html": [
      "9a472a4b2fe5ef4b0e5283e3d957ceefef387ff1",
      [
@@ -524147,14 +524553,14 @@
      ]
     },
     "historical.html": [
-     "1b73ca8d2236c7afdb9b331c532c84b6083f2968",
+     "23cc3fd1cc3953e6cac2ead71fa3549ebaf76da4",
      [
       null,
       {}
      ]
     ],
     "idlharness.window.js": [
-     "500f058259f9b83d0946838b6dbcdafb8bc8eab6",
+     "67cf8f37a585918ff0d82925c049ab82c5433b1d",
      [
       "svg/idlharness.window.html",
       {
@@ -534228,7 +534634,7 @@
      ]
     ],
     "idlharness.https.window.js": [
-     "c2bae34510412f0180efb1a53369ad9b24cbd1c4",
+     "e941a75c26752c6359ccef31b0635759cd784c0c",
      [
       "webaudio/idlharness.https.window.html",
       {
@@ -535583,7 +535989,7 @@
        ]
       ],
       "mediaElementAudioSourceToScriptProcessorTest.html": [
-       "b1f18d397d4fbcf3150e76aa478ce1a00a64e217",
+       "6a1a894b121e7c6107210bfbd7736a38ae6090a6",
        [
         null,
         {}
@@ -537522,7 +537928,7 @@
      ]
     ],
     "RTCPeerConnection-iceGatheringState.html": [
-     "e7d8f220e66818698686ca8e8ee4bc66156c1c70",
+     "870e6ad72ec356ecefbca68878da731e347ed17c",
      [
       null,
       {}
@@ -573786,7 +574192,7 @@
      },
      "release_actions": {
       "release.py": [
-       "1f486f7759fda53a325498931a8330ea2a98ed84",
+       "5df1ff4be902874529fcc5573bcf4df2755b9ae7",
        [
         null,
         {}
@@ -573867,7 +574273,7 @@
        ]
       ],
       "switch.py": [
-       "705fa79a5de021b96bd566aec06832a8f16e828a",
+       "33ea967f801144d1958a2fdb4ba269d09351de5a",
        [
         null,
         {}
@@ -573890,7 +574296,7 @@
      },
      "switch_to_parent_frame": {
       "switch.py": [
-       "ef2da45f16254c0d86ae5a80c0f4ac160b96ed83",
+       "d23dc522a1307d9ef9a2768522e9934d18407f96",
        [
         null,
         {}
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
new file mode 100644
index 00000000000..f64b45fea6b
--- /dev/null
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-002.html]
+  [Hit test float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
similarity index 67%
rename from tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
rename to tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
index 4bfb0c2053a..f29da48a2a0 100644
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
@@ -1,4 +1,4 @@
-[hit-test-floats-004.html]
+[hit-test-floats-003.html]
   [Miss float below something else]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
new file mode 100644
index 00000000000..baa9f1a7541
--- /dev/null
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-005.html]
+  [Miss clipped float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/cssom-view/CaretPosition-001.html.ini b/tests/wpt/metadata/css/cssom-view/CaretPosition-001.html.ini
new file mode 100644
index 00000000000..4c79907309b
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom-view/CaretPosition-001.html.ini
@@ -0,0 +1,4 @@
+[CaretPosition-001.html]
+  [Element at (400, 100)]
+    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 6ef8bb1049f..171592fc08f 100644
--- a/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini
+++ b/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini
@@ -2,6 +2,3 @@
   [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/serialize-media-rule.html.ini b/tests/wpt/metadata/css/cssom/serialize-media-rule.html.ini
index 913fbe04c31..1715f79ed09 100644
--- a/tests/wpt/metadata/css/cssom/serialize-media-rule.html.ini
+++ b/tests/wpt/metadata/css/cssom/serialize-media-rule.html.ini
@@ -14,3 +14,6 @@
   [type - inclusion of negated all]
     expected: FAIL
 
+  [features - no lexicographical sorting]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11.html.ini b/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11.html.ini
deleted file mode 100644
index 68f1a7ec3a5..00000000000
--- a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[moz-css21-block-page-break-inside-avoid-11.html]
-  type: reftest
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2.html.ini b/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2.html.ini
deleted file mode 100644
index bd50c27ef9b..00000000000
--- a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[moz-css21-float-page-break-inside-avoid-2.html]
-  type: reftest
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8.html.ini b/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8.html.ini
deleted file mode 100644
index f6e6c5be750..00000000000
--- a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[moz-css21-float-page-break-inside-avoid-8.html]
-  type: reftest
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2.html.ini b/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2.html.ini
deleted file mode 100644
index b287cadf2f3..00000000000
--- a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[moz-css21-row-page-break-inside-avoid-2.html]
-  type: reftest
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002.xht.ini b/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002.xht.ini
deleted file mode 100644
index 6dbba402d52..00000000000
--- a/tests/wpt/metadata/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002.xht.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[multicol-height-002.xht]
-  type: reftest
-  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 63bdce56dbf..7750efe23e6 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -312,24 +312,24 @@
   [fetch(): separate response Content-Type: text/plain ]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: text/html;" text/plain]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/plain */*]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html */*]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html */*]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
   [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
+  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
new file mode 100644
index 00000000000..75d75b4cda2
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_2.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_4.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
new file mode 100644
index 00000000000..385376c7321
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_4.html]
+  [Multiple history traversals, last would be aborted]
+    expected: FAIL
+
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 2532dceabac..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
@@ -1,11 +1,7 @@
 [embedded-opener-remove-frame.html]
-  expected: CRASH
   [opener and "removed" embedded documents]
     expected: FAIL
 
   [opener of discarded nested browsing context]
     expected: FAIL
 
-  [opener of discarded auxiliary browsing context]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini b/tests/wpt/metadata/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
index c1ee61dcd49..76d431df3a0 100644
--- a/tests/wpt/metadata/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
+++ b/tests/wpt/metadata/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle from image draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html.ini b/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html.ini
index ead7f5f5ad8..efa68741600 100644
--- a/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html.ini
+++ b/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini b/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
index c1ee61dcd49..76d431df3a0 100644
--- a/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
+++ b/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle from image draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js.ini b/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js.ini
index 341b1b43e6f..6f5d45f8dd9 100644
--- a/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js.ini
+++ b/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle from image draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js.ini b/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js.ini
index 9160e3ad144..a9d64261e96 100644
--- a/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js.ini
+++ b/tests/wpt/metadata/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js.ini
@@ -2,3 +2,6 @@
   [drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR]
     expected: FAIL
 
+  [drawImage with zero-sized source rectangle draws nothing without exception]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/dom/idlharness.https.html.ini b/tests/wpt/metadata/html/dom/idlharness.https.html.ini
index 72ac2418645..ccf7eb53a20 100644
--- a/tests/wpt/metadata/html/dom/idlharness.https.html.ini
+++ b/tests/wpt/metadata/html/dom/idlharness.https.html.ini
@@ -1361,6 +1361,27 @@
   [ElementInternals interface: attribute shadowRoot]
     expected: FAIL
 
+  [Worklet interface object length]
+    expected: FAIL
+
+  [Worklet interface: existence and properties of interface object]
+    expected: FAIL
+
+  [Worklet interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [Worklet interface object name]
+    expected: FAIL
+
+  [Worklet interface: operation addModule(USVString, optional WorkletOptions)]
+    expected: FAIL
+
+  [Worklet interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [Worklet interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
 
 [idlharness.https.html?include=(Document|Window)]
   [Document interface: documentWithHandlers must inherit property "queryCommandEnabled(DOMString)" with the proper type]
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html.ini
new file mode 100644
index 00000000000..a22a706bade
--- /dev/null
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html.ini
@@ -0,0 +1,2 @@
+[embed-document-under-content-visibility.html]
+  expected: ERROR
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index fc37df7e3fa..2a166bb97b7 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_escaping-1.html]
   type: testharness
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
index daa518bd0e3..c6f45be1eb2 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-2.html]
-  expected: CRASH
+  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_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 4bc0524f105..9df1ac56f2a 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: CRASH
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
new file mode 100644
index 00000000000..59a54fe88e4
--- /dev/null
+++ b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
@@ -0,0 +1,4 @@
+[module-delayed.html]
+  [async document.write in a module]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
index a1effd5f801..d16e3ccb769 100644
--- a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
+++ b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
@@ -1,4 +1,5 @@
 [promise-job-entry.html]
+  expected: TIMEOUT
   [Fulfillment handler on fulfilled promise]
     expected: FAIL
 
@@ -15,5 +16,5 @@
     expected: FAIL
 
   [Fulfillment handler on pending-then-fulfilled promise]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
index 66bd350083b..a56bad443a2 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
@@ -1,4 +1,5 @@
 [realtimeanalyser-fft-scaling.html]
+  expected: TIMEOUT
   [X 2048-point FFT peak position is not equal to 64. Got 0.]
     expected: FAIL
 
diff --git a/tests/wpt/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 75e8ddbd5b9..c305bcf3226 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
@@ -404,3 +404,9 @@
   [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\]\t1.7380608709161053e-27\t9.3139332532882690e-1\t9.3139332532882690e-1\t1.0000000000000000e+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 9.3139332532882690e-1 at index of 28696.\n\tMax RelError of 1.0000000000000000e+0 at index of 28696.\n]
     expected: FAIL
 
+  [X SNR (-95.67336535132387 dB) is not greater than or equal to 65.737. Got -95.67336535132387.]
+    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-9.0234480000000000e+6\t9.3139332532882690e-1\t9.0234489313933253e+6\t9.6881185273768324e+6\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 9.0234489313933253e+6 at index of 28696.\n\tMax RelError of 9.6881185273768324e+6 at index of 28696.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webdriver/tests/switch_to_frame/switch.py.ini b/tests/wpt/metadata/webdriver/tests/switch_to_frame/switch.py.ini
index f94632c8263..49878d78ced 100644
--- a/tests/wpt/metadata/webdriver/tests/switch_to_frame/switch.py.ini
+++ b/tests/wpt/metadata/webdriver/tests/switch_to_frame/switch.py.ini
@@ -21,13 +21,13 @@
     expected: FAIL
 
   [test_no_top_browsing_context[id2\]]
-    expected: ERROR
+    expected: FAIL
 
   [test_no_top_browsing_context[None\]]
-    expected: ERROR
+    expected: FAIL
 
   [test_no_top_browsing_context[0\]]
-    expected: ERROR
+    expected: FAIL
 
   [test_no_browsing_context[None\]]
     expected: ERROR
@@ -38,3 +38,6 @@
   [test_no_browsing_context[id2\]]
     expected: ERROR
 
+  [test_no_browsing_context_when_already_top_level]
+    expected: ERROR
+
diff --git a/tests/wpt/metadata/webdriver/tests/switch_to_parent_frame/switch.py.ini b/tests/wpt/metadata/webdriver/tests/switch_to_parent_frame/switch.py.ini
index d17e5107b94..a66819fd23f 100644
--- a/tests/wpt/metadata/webdriver/tests/switch_to_parent_frame/switch.py.ini
+++ b/tests/wpt/metadata/webdriver/tests/switch_to_parent_frame/switch.py.ini
@@ -9,5 +9,8 @@
     expected: FAIL
 
   [test_no_top_browsing_context]
+    expected: FAIL
+
+  [test_no_browsing_context_when_already_top_level]
     expected: ERROR
 
diff --git a/tests/wpt/metadata/webmessaging/with-ports/017.html.ini b/tests/wpt/metadata/webmessaging/with-ports/017.html.ini
new file mode 100644
index 00000000000..064cf47545b
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/with-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/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/animation-worklet/idlharness.any.js b/tests/wpt/web-platform-tests/animation-worklet/idlharness.any.js
index 3517ffc8968..a53ac739f33 100644
--- a/tests/wpt/web-platform-tests/animation-worklet/idlharness.any.js
+++ b/tests/wpt/web-platform-tests/animation-worklet/idlharness.any.js
@@ -8,7 +8,7 @@
 
 idl_test(
   ['css-animation-worklet'],
-  ['worklets', 'web-animations', 'html', 'cssom', 'dom'],
+  ['web-animations', 'html', 'cssom', 'dom'],
   idl_array => {
     idl_array.add_objects({
       WorkletAnimation: ['new WorkletAnimation("name")'],
diff --git a/tests/wpt/web-platform-tests/beacon/headers/header-content-type.html b/tests/wpt/web-platform-tests/beacon/headers/header-content-type-and-body.html
similarity index 61%
rename from tests/wpt/web-platform-tests/beacon/headers/header-content-type.html
rename to tests/wpt/web-platform-tests/beacon/headers/header-content-type-and-body.html
index e2f2705ee64..0369cffdf47 100644
--- a/tests/wpt/web-platform-tests/beacon/headers/header-content-type.html
+++ b/tests/wpt/web-platform-tests/beacon/headers/header-content-type-and-body.html
@@ -12,13 +12,13 @@
     <script>
 const RESOURCES_DIR = "/beacon/resources/";
 
-function testContentTypeHeader(what, contentType, title) {
+function testContentTypeAndBody(what, expected, title) {
   function wait(ms) {
     return new Promise(resolve => step_timeout(resolve, ms));
   }
   promise_test(async t => {
     const id = self.token();
-    const testUrl = new Request(RESOURCES_DIR + "content-type.py?cmd=put&id=" + id).url;
+    const testUrl = new Request(RESOURCES_DIR + "content-type-and-body.py?cmd=put&id=" + id).url;
     assert_equals(performance.getEntriesByName(testUrl).length, 0);
     assert_true(navigator.sendBeacon(testUrl, what), "SendBeacon Succeeded");
 
@@ -26,13 +26,17 @@ function testContentTypeHeader(what, contentType, title) {
       await wait(50);
     } while (performance.getEntriesByName(testUrl).length === 0);
     assert_equals(performance.getEntriesByName(testUrl).length, 1);
-    const checkUrl = RESOURCES_DIR + "content-type.py?cmd=get&id=" + id;
+    const checkUrl = RESOURCES_DIR + "content-type-and-body.py?cmd=get&id=" + id;
     const response = await fetch(checkUrl);
     const text = await response.text();
-    if (contentType === "multipart/form-data") {
+    if (expected.startsWith("multipart/form-data")) {
+      const split = expected.split(":");
+      const contentType = split[0];
+      const contentDisposition = "Content-Disposition: form-data; name=\"" + split[1] + "\"; filename=\"blob\"";
       assert_true(text.startsWith(contentType), "Correct Content-Type header result");
+      assert_true(text.includes(contentDisposition), "Body included value");
     } else {
-      assert_equals(text, contentType, "Correct Content-Type header result");
+      assert_equals(text, expected, "Correct Content-Type header result");
     }
   }, "Test content-type header for a body " + title);
 }
@@ -74,12 +78,12 @@ function stringToURLSearchParams(input)
   return new URLSearchParams(input);
 }
 
-testContentTypeHeader("hi!", "text/plain;charset=UTF-8", "string");
-testContentTypeHeader(stringToArrayBufferView("123"), "", "ArrayBufferView");
-testContentTypeHeader(stringToArrayBuffer("123"), "", "ArrayBuffer");
-testContentTypeHeader(stringToBlob("123"), "text/plain", "Blob");
-testContentTypeHeader(stringToFormData("qwerty"), "multipart/form-data", "FormData");
-testContentTypeHeader(stringToURLSearchParams("key1=value1&key2=value2"), "application/x-www-form-urlencoded;charset=UTF-8", "URLSearchParams");
+testContentTypeAndBody("hi!", "text/plain;charset=UTF-8: hi!", "string");
+testContentTypeAndBody(stringToArrayBufferView("123"), ": 1\0" + "2\0" + "3\0", "ArrayBufferView");
+testContentTypeAndBody(stringToArrayBuffer("123"), ": 1\0" + "2\0" + "3\0", "ArrayBuffer");
+testContentTypeAndBody(stringToBlob("123"), "text/plain: 123", "Blob");
+testContentTypeAndBody(stringToFormData("qwerty"), "multipart/form-data:qwerty", "FormData");
+testContentTypeAndBody(stringToURLSearchParams("key1=value1&key2=value2"), "application/x-www-form-urlencoded;charset=UTF-8: key1=value1&key2=value2", "URLSearchParams");
     </script>
   </body>
 </html>
diff --git a/tests/wpt/web-platform-tests/beacon/resources/content-type.py b/tests/wpt/web-platform-tests/beacon/resources/content-type-and-body.py
similarity index 92%
rename from tests/wpt/web-platform-tests/beacon/resources/content-type.py
rename to tests/wpt/web-platform-tests/beacon/resources/content-type-and-body.py
index d3be7d4dc12..1c8c4c7ec16 100644
--- a/tests/wpt/web-platform-tests/beacon/resources/content-type.py
+++ b/tests/wpt/web-platform-tests/beacon/resources/content-type-and-body.py
@@ -2,7 +2,7 @@ def main(request, response):
     command = request.GET.first(b"cmd").lower()
     test_id = request.GET.first(b"id")
     if command == b"put":
-        request.server.stash.put(test_id, request.headers.get(b"Content-Type", b""))
+        request.server.stash.put(test_id, request.headers.get(b"Content-Type", b"") + ": " + request.body)
         return [(b"Content-Type", b"text/plain")], u""
 
     if command == b"get":
diff --git a/tests/wpt/web-platform-tests/bluetooth/requestDevice/cross-origin-iframe.sub.https.html b/tests/wpt/web-platform-tests/bluetooth/requestDevice/cross-origin-iframe.sub.https.html
index 543c8a586e9..f3fc924ea70 100644
--- a/tests/wpt/web-platform-tests/bluetooth/requestDevice/cross-origin-iframe.sub.https.html
+++ b/tests/wpt/web-platform-tests/bluetooth/requestDevice/cross-origin-iframe.sub.https.html
@@ -24,10 +24,8 @@ bluetooth_test(
                     }))
               // 2. Request the device from the iframe.
               .then(() => new Promise(resolve => {
-                      callWithTrustedClick(() => {
-                        iframe.contentWindow.postMessage(
-                            {type: 'RequestDevice'}, '*');
-                      });
+                      iframe.contentWindow.postMessage(
+                          {type: 'RequestDevice'}, '*');
 
                       window.onmessage = messageEvent => {
                         assert_equals(
diff --git a/tests/wpt/web-platform-tests/bluetooth/requestDevice/request-from-sandboxed-iframe.https.html b/tests/wpt/web-platform-tests/bluetooth/requestDevice/request-from-sandboxed-iframe.https.html
index 26291b3b4c1..21f2cf1c9c6 100644
--- a/tests/wpt/web-platform-tests/bluetooth/requestDevice/request-from-sandboxed-iframe.https.html
+++ b/tests/wpt/web-platform-tests/bluetooth/requestDevice/request-from-sandboxed-iframe.https.html
@@ -27,10 +27,8 @@ bluetooth_test(
                     }))
               // 2. Request the device from the iframe.
               .then(() => new Promise(resolve => {
-                      callWithTrustedClick(() => {
-                        iframe.contentWindow.postMessage(
-                            {type: 'RequestDevice'}, '*');
-                      });
+                      iframe.contentWindow.postMessage(
+                          {type: 'RequestDevice'}, '*');
 
                       window.onmessage = messageEvent => {
                         assert_equals(messageEvent.data, expected);
diff --git a/tests/wpt/web-platform-tests/bluetooth/resources/health-thermometer-iframe.html b/tests/wpt/web-platform-tests/bluetooth/resources/health-thermometer-iframe.html
index 367b778c454..78774b4d158 100644
--- a/tests/wpt/web-platform-tests/bluetooth/resources/health-thermometer-iframe.html
+++ b/tests/wpt/web-platform-tests/bluetooth/resources/health-thermometer-iframe.html
@@ -1,10 +1,17 @@
 <!DOCTYPE html>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<body>
+<button>Click me!</button>
 <script>
 let device, gatt;
 
+test_driver.set_test_context(parent);
+
 function requestDeviceWithOptionsAndConnect(options) {
-  return navigator.bluetooth.requestDevice(options).then(
-      device => device.gatt.connect());
+  return test_driver.click(document.getElementsByTagName("button")[0])
+      .then(() => navigator.bluetooth.requestDevice(options))
+      .then(device => device.gatt.connect());
 }
 
 window.addEventListener('message', (messageEvent) => {
@@ -14,8 +21,9 @@ window.addEventListener('message', (messageEvent) => {
           availability => parent.postMessage(availability, '*'));
       break;
     case 'RequestDevice':
-      navigator.bluetooth
-          .requestDevice({filters: [{services: ['generic_access']}]})
+      test_driver.click(document.getElementsByTagName("button")[0])
+          .then(() => navigator.bluetooth
+              .requestDevice({filters: [{services: ['generic_access']}]}))
           .then(device => {
             if (device.constructor.name === 'BluetoothDevice') {
               parent.postMessage('Success', '*');
diff --git a/tests/wpt/web-platform-tests/cookies/schemeful-same-site/schemeful-websockets.sub.tentative.html b/tests/wpt/web-platform-tests/cookies/schemeful-same-site/schemeful-websockets.sub.tentative.html
index 8e7c073c997..2626d1cd9e8 100644
--- a/tests/wpt/web-platform-tests/cookies/schemeful-same-site/schemeful-websockets.sub.tentative.html
+++ b/tests/wpt/web-platform-tests/cookies/schemeful-same-site/schemeful-websockets.sub.tentative.html
@@ -5,6 +5,7 @@
   <script src="/resources/testharness.js"></script>
   <script src="/resources/testharnessreport.js"></script>
   <script src="/cookies/resources/testharness-helpers.js"></script>
+  <script src="/cookies/resources/cookie-helper.sub.js"></script>
 </head>
 <body>
 <div id=log></div>
@@ -12,6 +13,11 @@
   async_test(function (t) {
     document.cookie = `samesite_strict=1; sameSite=strict; path=/`;
     document.cookie = `samesite_lax=1; sameSite=lax; path=/`;
+    t.add_cleanup(function() {
+      credFetch(origin + "/cookies/resources/drop.py?name=" + "samesite_strict");
+      credFetch(origin + "/cookies/resources/drop.py?name=" + "samesite_lax");
+    });
+
 
     var ws = new WebSocket("ws://{{host}}:{{ports[ws][0]}}/echo-cookie");
     ws.onclose = t.step_func_done(function () {
@@ -32,10 +38,9 @@
         ws2.onclose = null;
         ws2.close();
         // Cross-scheme WebSockets shouldn't get anything.
-        assert_regexp_match(e2.data, /(none)/, "Cross-scheme");
+        assert_regexp_match(e2.data, /^\(none\)$/, "Cross-scheme");
       });
     });
-
   }, "Cross-scheme WebSockets are cross-site");
 </script>
 </body>
diff --git a/tests/wpt/web-platform-tests/css/CSS2/floats/float-table-align-left-quirk-ref.html b/tests/wpt/web-platform-tests/css/CSS2/floats/float-table-align-left-quirk-ref.html
new file mode 100644
index 00000000000..6b46fb8eb9b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/CSS2/floats/float-table-align-left-quirk-ref.html
@@ -0,0 +1,34 @@
+<!-- intentionally quirks mode -->
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <title>Reference: Check that the old IE quirk for &lt;table align=left&gt; is NOT implemented</title>
+  <meta name="assert" content="1 and 2 should all be on separate lines below.">
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+</head>
+<body>
+
+<div style="width:0">
+<table><td>1</td></table>
+<table><td>2</td></table>
+</div>
+
+<div style="width:0">
+<table><td>1</td></table>
+<table><td>2</td></table>
+</div>
+
+<div style="width:0">
+<table><td>1</td></table>
+<table><td>2</td></table>
+</div>
+
+<div style="width:0">
+<table><td>1</td></table>
+<table><td>2</td></table>
+</div>
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/CSS2/floats/float-table-align-left-quirk.html b/tests/wpt/web-platform-tests/css/CSS2/floats/float-table-align-left-quirk.html
new file mode 100644
index 00000000000..60e219078a0
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/CSS2/floats/float-table-align-left-quirk.html
@@ -0,0 +1,36 @@
+<!-- intentionally quirks mode -->
+<!--
+     Any copyright is dedicated to the Public Domain.
+     http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+  <title>CSS2: Check that the old IE quirk for &lt;table align=left&gt; is NOT implemented</title>
+  <meta name="assert" content="1 and 2 should all be on separate lines below.">
+  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+  <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#floats" />
+  <link rel="match" href="float-table-align-left-quirk-ref.html">
+</head>
+<body>
+
+<div style="width:0">
+<table align="left"><td>1</td></table>
+<table align="left"><td>2</td></table>
+</div>
+
+<div style="width:0">
+<table align="left"><td>1</td></table>
+<table style="float:left"><td>2</td></table>
+</div>
+
+<div style="width:0">
+<table style="float:left"><td>1</td></table>
+<table align="left"><td>2</td></table>
+</div>
+
+<div style="width:0">
+<table style="float:left"><td>1</td></table>
+<table style="float:left"><td>2</td></table>
+</div>
+
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-conditional/js/CSS-supports-CSSStyleDeclaration.html b/tests/wpt/web-platform-tests/css/css-conditional/js/CSS-supports-CSSStyleDeclaration.html
new file mode 100644
index 00000000000..3a9786c510d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-conditional/js/CSS-supports-CSSStyleDeclaration.html
@@ -0,0 +1,766 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS.supports v. CSSStyleDeclaration</title>
+<link rel="help" href="https://drafts.csswg.org/css-conditional/#dom-css-supports">
+<link rel="help" href="https://drafts.csswg.org/cssom/#the-cssstyledeclaration-interface">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="testElement"></div>
+<script>
+// This gigantic list of properties is derived from the union of pretty much everything ever
+// exposed via CSSStyleDeclaration since 2010 in a major browser; this deliberately includes all
+// the vendor-prefixed properties _because_ they're often where bugs lie
+
+const properties = [
+  "-apple-color-filter",
+  "-apple-pay-button-style",
+  "-apple-pay-button-type",
+  "-apple-trailing-word",
+  "-epub-caption-side",
+  "-epub-text-combine",
+  "-epub-text-emphasis",
+  "-epub-text-emphasis-color",
+  "-epub-text-emphasis-style",
+  "-epub-text-orientation",
+  "-epub-text-transform",
+  "-epub-word-break",
+  "-epub-writing-mode",
+  "-moz-animation",
+  "-moz-animation-delay",
+  "-moz-animation-direction",
+  "-moz-animation-duration",
+  "-moz-animation-fill-mode",
+  "-moz-animation-iteration-count",
+  "-moz-animation-name",
+  "-moz-animation-play-state",
+  "-moz-animation-timing-function",
+  "-moz-appearance",
+  "-moz-backface-visibility",
+  "-moz-binding",
+  "-moz-border-bottom-colors",
+  "-moz-border-end",
+  "-moz-border-end-color",
+  "-moz-border-end-style",
+  "-moz-border-end-width",
+  "-moz-border-image",
+  "-moz-border-left-colors",
+  "-moz-border-right-colors",
+  "-moz-border-start",
+  "-moz-border-start-color",
+  "-moz-border-start-style",
+  "-moz-border-start-width",
+  "-moz-border-top-colors",
+  "-moz-box-align",
+  "-moz-box-direction",
+  "-moz-box-flex",
+  "-moz-box-ordinal-group",
+  "-moz-box-orient",
+  "-moz-box-pack",
+  "-moz-box-sizing",
+  "-moz-column-count",
+  "-moz-column-fill",
+  "-moz-column-gap",
+  "-moz-column-rule",
+  "-moz-column-rule-color",
+  "-moz-column-rule-style",
+  "-moz-column-rule-width",
+  "-moz-column-span",
+  "-moz-column-width",
+  "-moz-columns",
+  "-moz-float-edge",
+  "-moz-font-feature-settings",
+  "-moz-font-language-override",
+  "-moz-force-broken-image-icon",
+  "-moz-hyphens",
+  "-moz-image-region",
+  "-moz-margin-end",
+  "-moz-margin-start",
+  "-moz-orient",
+  "-moz-osx-font-smoothing",
+  "-moz-outline-radius",
+  "-moz-outline-radius-bottomleft",
+  "-moz-outline-radius-bottomright",
+  "-moz-outline-radius-topleft",
+  "-moz-outline-radius-topright",
+  "-moz-padding-end",
+  "-moz-padding-start",
+  "-moz-perspective",
+  "-moz-perspective-origin",
+  "-moz-stack-sizing",
+  "-moz-tab-size",
+  "-moz-text-align-last",
+  "-moz-text-size-adjust",
+  "-moz-transform",
+  "-moz-transform-origin",
+  "-moz-transform-style",
+  "-moz-transition",
+  "-moz-transition-delay",
+  "-moz-transition-duration",
+  "-moz-transition-property",
+  "-moz-transition-timing-function",
+  "-moz-user-focus",
+  "-moz-user-input",
+  "-moz-user-modify",
+  "-moz-user-select",
+  "-moz-window-dragging",
+  "-ms-content-zoom-chaining",
+  "-ms-content-zoom-limit",
+  "-ms-content-zoom-limit-max",
+  "-ms-content-zoom-limit-min",
+  "-ms-content-zoom-snap",
+  "-ms-content-zoom-snap-points",
+  "-ms-content-zoom-snap-type",
+  "-ms-content-zooming",
+  "-ms-flow-from",
+  "-ms-flow-into",
+  "-ms-font-feature-settings",
+  "-ms-grid-column",
+  "-ms-grid-column-align",
+  "-ms-grid-column-span",
+  "-ms-grid-columns",
+  "-ms-grid-row",
+  "-ms-grid-row-align",
+  "-ms-grid-row-span",
+  "-ms-grid-rows",
+  "-ms-high-contrast-adjust",
+  "-ms-hyphenate-limit-chars",
+  "-ms-hyphenate-limit-lines",
+  "-ms-hyphenate-limit-zone",
+  "-ms-hyphens",
+  "-ms-ime-align",
+  "-ms-overflow-style",
+  "-ms-scroll-chaining",
+  "-ms-scroll-limit",
+  "-ms-scroll-limit-x-max",
+  "-ms-scroll-limit-x-min",
+  "-ms-scroll-limit-y-max",
+  "-ms-scroll-limit-y-min",
+  "-ms-scroll-rails",
+  "-ms-scroll-snap-points-x",
+  "-ms-scroll-snap-points-y",
+  "-ms-scroll-snap-type",
+  "-ms-scroll-snap-x",
+  "-ms-scroll-snap-y",
+  "-ms-scroll-translation",
+  "-ms-text-combine-horizontal",
+  "-ms-text-size-adjust",
+  "-ms-touch-select",
+  "-ms-user-select",
+  "-ms-wrap-flow",
+  "-ms-wrap-margin",
+  "-ms-wrap-through",
+  "-webkit-align-content",
+  "-webkit-align-items",
+  "-webkit-align-self",
+  "-webkit-animation",
+  "-webkit-animation-delay",
+  "-webkit-animation-direction",
+  "-webkit-animation-duration",
+  "-webkit-animation-fill-mode",
+  "-webkit-animation-iteration-count",
+  "-webkit-animation-name",
+  "-webkit-animation-play-state",
+  "-webkit-animation-timing-function",
+  "-webkit-appearance",
+  "-webkit-backface-visibility",
+  "-webkit-background-clip",
+  "-webkit-background-origin",
+  "-webkit-background-size",
+  "-webkit-border-bottom-left-radius",
+  "-webkit-border-bottom-right-radius",
+  "-webkit-border-image",
+  "-webkit-border-radius",
+  "-webkit-border-top-left-radius",
+  "-webkit-border-top-right-radius",
+  "-webkit-box-align",
+  "-webkit-box-direction",
+  "-webkit-box-flex",
+  "-webkit-box-ordinal-group",
+  "-webkit-box-orient",
+  "-webkit-box-pack",
+  "-webkit-box-shadow",
+  "-webkit-box-sizing",
+  "-webkit-filter",
+  "-webkit-flex",
+  "-webkit-flex-basis",
+  "-webkit-flex-direction",
+  "-webkit-flex-flow",
+  "-webkit-flex-grow",
+  "-webkit-flex-shrink",
+  "-webkit-flex-wrap",
+  "-webkit-justify-content",
+  "-webkit-line-clamp",
+  "-webkit-mask",
+  "-webkit-mask-clip",
+  "-webkit-mask-composite",
+  "-webkit-mask-image",
+  "-webkit-mask-origin",
+  "-webkit-mask-position",
+  "-webkit-mask-position-x",
+  "-webkit-mask-position-y",
+  "-webkit-mask-repeat",
+  "-webkit-mask-size",
+  "-webkit-order",
+  "-webkit-perspective",
+  "-webkit-perspective-origin",
+  "-webkit-text-fill-color",
+  "-webkit-text-size-adjust",
+  "-webkit-text-stroke",
+  "-webkit-text-stroke-color",
+  "-webkit-text-stroke-width",
+  "-webkit-transform",
+  "-webkit-transform-origin",
+  "-webkit-transform-style",
+  "-webkit-transition",
+  "-webkit-transition-delay",
+  "-webkit-transition-duration",
+  "-webkit-transition-property",
+  "-webkit-transition-timing-function",
+  "-webkit-user-select",
+  "align-content",
+  "align-items",
+  "align-self",
+  "alignment-baseline",
+  "all",
+  "alt",
+  "animation",
+  "animation-delay",
+  "animation-direction",
+  "animation-duration",
+  "animation-fill-mode",
+  "animation-iteration-count",
+  "animation-name",
+  "animation-play-state",
+  "animation-timing-function",
+  "appearance",
+  "backdrop-filter",
+  "backface-visibility",
+  "background",
+  "background-attachment",
+  "background-blend-mode",
+  "background-clip",
+  "background-color",
+  "background-image",
+  "background-origin",
+  "background-position",
+  "background-position-x",
+  "background-position-y",
+  "background-repeat",
+  "background-repeat-x",
+  "background-repeat-y",
+  "background-size",
+  "baseline-shift",
+  "block-size",
+  "border",
+  "border-block",
+  "border-block-color",
+  "border-block-end",
+  "border-block-end-color",
+  "border-block-end-style",
+  "border-block-end-width",
+  "border-block-start",
+  "border-block-start-color",
+  "border-block-start-style",
+  "border-block-start-width",
+  "border-block-style",
+  "border-block-width",
+  "border-bottom",
+  "border-bottom-color",
+  "border-bottom-left-radius",
+  "border-bottom-right-radius",
+  "border-bottom-style",
+  "border-bottom-width",
+  "border-collapse",
+  "border-color",
+  "border-end-end-radius",
+  "border-end-start-radius",
+  "border-image",
+  "border-image-outset",
+  "border-image-repeat",
+  "border-image-slice",
+  "border-image-source",
+  "border-image-width",
+  "border-inline",
+  "border-inline-color",
+  "border-inline-end",
+  "border-inline-end-color",
+  "border-inline-end-style",
+  "border-inline-end-width",
+  "border-inline-start",
+  "border-inline-start-color",
+  "border-inline-start-style",
+  "border-inline-start-width",
+  "border-inline-style",
+  "border-inline-width",
+  "border-left",
+  "border-left-color",
+  "border-left-style",
+  "border-left-width",
+  "border-radius",
+  "border-right",
+  "border-right-color",
+  "border-right-style",
+  "border-right-width",
+  "border-spacing",
+  "border-start-end-radius",
+  "border-start-start-radius",
+  "border-style",
+  "border-top",
+  "border-top-color",
+  "border-top-left-radius",
+  "border-top-right-radius",
+  "border-top-style",
+  "border-top-width",
+  "border-width",
+  "bottom",
+  "box-decoration-break",
+  "box-shadow",
+  "box-sizing",
+  "break-after",
+  "break-before",
+  "break-inside",
+  "buffered-rendering",
+  "caption-side",
+  "caret-color",
+  "clear",
+  "clip",
+  "clip-path",
+  "clip-rule",
+  "color",
+  "color-adjust",
+  "color-interpolation",
+  "color-interpolation-filters",
+  "color-profile",
+  "color-rendering",
+  "color-scheme",
+  "column-count",
+  "column-fill",
+  "column-gap",
+  "column-progression",
+  "column-rule",
+  "column-rule-color",
+  "column-rule-style",
+  "column-rule-width",
+  "column-span",
+  "column-width",
+  "columns",
+  "contain",
+  "contain-intrinsic-size",
+  "content",
+  "content-visibility",
+  "counter-increment",
+  "counter-reset",
+  "counter-set",
+  "cursor",
+  "cx",
+  "cy",
+  "d",
+  "direction",
+  "display",
+  "dominant-baseline",
+  "empty-cells",
+  "enable-background",
+  "fill",
+  "fill-opacity",
+  "fill-rule",
+  "filter",
+  "flex",
+  "flex-basis",
+  "flex-direction",
+  "flex-flow",
+  "flex-grow",
+  "flex-shrink",
+  "flex-wrap",
+  "float",
+  "flood-color",
+  "flood-opacity",
+  "font",
+  "font-display",
+  "font-family",
+  "font-feature-settings",
+  "font-kerning",
+  "font-language-override",
+  "font-optical-sizing",
+  "font-size",
+  "font-size-adjust",
+  "font-stretch",
+  "font-style",
+  "font-synthesis",
+  "font-variant",
+  "font-variant-alternates",
+  "font-variant-caps",
+  "font-variant-east-asian",
+  "font-variant-ligatures",
+  "font-variant-numeric",
+  "font-variant-position",
+  "font-variation-settings",
+  "font-weight",
+  "gap",
+  "glyph-orientation-horizontal",
+  "glyph-orientation-vertical",
+  "grid",
+  "grid-area",
+  "grid-auto-columns",
+  "grid-auto-flow",
+  "grid-auto-rows",
+  "grid-column",
+  "grid-column-end",
+  "grid-column-gap",
+  "grid-column-start",
+  "grid-gap",
+  "grid-row",
+  "grid-row-end",
+  "grid-row-gap",
+  "grid-row-start",
+  "grid-template",
+  "grid-template-areas",
+  "grid-template-columns",
+  "grid-template-rows",
+  "hanging-punctuation",
+  "height",
+  "hyphens",
+  "image-orientation",
+  "image-rendering",
+  "ime-mode",
+  "inherits",
+  "initial-value",
+  "inline-size",
+  "inset",
+  "inset-block",
+  "inset-block-end",
+  "inset-block-start",
+  "inset-inline",
+  "inset-inline-end",
+  "inset-inline-start",
+  "internal-text-autosizing-status",
+  "isolation",
+  "justify-content",
+  "justify-items",
+  "justify-self",
+  "kerning",
+  "layout-grid",
+  "layout-grid-char",
+  "layout-grid-line",
+  "layout-grid-mode",
+  "layout-grid-type",
+  "left",
+  "letter-spacing",
+  "lighting-color",
+  "line-break",
+  "line-height",
+  "list-style",
+  "list-style-image",
+  "list-style-position",
+  "list-style-type",
+  "margin",
+  "margin-block",
+  "margin-block-end",
+  "margin-block-start",
+  "margin-bottom",
+  "margin-inline",
+  "margin-inline-end",
+  "margin-inline-start",
+  "margin-left",
+  "margin-right",
+  "margin-top",
+  "marker",
+  "marker-end",
+  "marker-mid",
+  "marker-offset",
+  "marker-start",
+  "mask",
+  "mask-clip",
+  "mask-composite",
+  "mask-image",
+  "mask-mode",
+  "mask-origin",
+  "mask-position",
+  "mask-position-x",
+  "mask-position-y",
+  "mask-repeat",
+  "mask-size",
+  "mask-type",
+  "max-block-size",
+  "max-height",
+  "max-inline-size",
+  "max-width",
+  "max-zoom",
+  "min-block-size",
+  "min-height",
+  "min-inline-size",
+  "min-width",
+  "min-zoom",
+  "mix-blend-mode",
+  "motion",
+  "motion-offset",
+  "motion-path",
+  "motion-rotation",
+  "object-fit",
+  "object-position",
+  "offset",
+  "offset-anchor",
+  "offset-block-end",
+  "offset-block-start",
+  "offset-distance",
+  "offset-inline-end",
+  "offset-inline-start",
+  "offset-path",
+  "offset-rotate",
+  "offset-rotation",
+  "opacity",
+  "order",
+  "orientation",
+  "orphans",
+  "outline",
+  "outline-color",
+  "outline-offset",
+  "outline-style",
+  "outline-width",
+  "overflow",
+  "overflow-anchor",
+  "overflow-block",
+  "overflow-inline",
+  "overflow-wrap",
+  "overflow-x",
+  "overflow-y",
+  "overscroll-behavior",
+  "overscroll-behavior-block",
+  "overscroll-behavior-inline",
+  "overscroll-behavior-x",
+  "overscroll-behavior-y",
+  "padding",
+  "padding-block",
+  "padding-block-end",
+  "padding-block-start",
+  "padding-bottom",
+  "padding-inline",
+  "padding-inline-end",
+  "padding-inline-start",
+  "padding-left",
+  "padding-right",
+  "padding-top",
+  "page",
+  "page-break-after",
+  "page-break-before",
+  "page-break-inside",
+  "page-orientation",
+  "paint-order",
+  "pen-action",
+  "perspective",
+  "perspective-origin",
+  "perspective-origin-x",
+  "perspective-origin-y",
+  "place-content",
+  "place-items",
+  "place-self",
+  "pointer-events",
+  "position",
+  "quotes",
+  "r",
+  "resize",
+  "right",
+  "rotate",
+  "row-gap",
+  "ruby-align",
+  "ruby-overhang",
+  "ruby-position",
+  "rx",
+  "ry",
+  "scale",
+  "scroll-behavior",
+  "scroll-margin",
+  "scroll-margin-block",
+  "scroll-margin-block-end",
+  "scroll-margin-block-start",
+  "scroll-margin-bottom",
+  "scroll-margin-inline",
+  "scroll-margin-inline-end",
+  "scroll-margin-inline-start",
+  "scroll-margin-left",
+  "scroll-margin-right",
+  "scroll-margin-top",
+  "scroll-padding",
+  "scroll-padding-block",
+  "scroll-padding-block-end",
+  "scroll-padding-block-start",
+  "scroll-padding-bottom",
+  "scroll-padding-inline",
+  "scroll-padding-inline-end",
+  "scroll-padding-inline-start",
+  "scroll-padding-left",
+  "scroll-padding-right",
+  "scroll-padding-top",
+  "scroll-snap-align",
+  "scroll-snap-coordinate",
+  "scroll-snap-destination",
+  "scroll-snap-margin",
+  "scroll-snap-margin-bottom",
+  "scroll-snap-margin-left",
+  "scroll-snap-margin-right",
+  "scroll-snap-margin-top",
+  "scroll-snap-points-x",
+  "scroll-snap-points-y",
+  "scroll-snap-stop",
+  "scroll-snap-type",
+  "scroll-snap-type-x",
+  "scroll-snap-type-y",
+  "scrollbar-color",
+  "scrollbar-width",
+  "shape-image-threshold",
+  "shape-margin",
+  "shape-outside",
+  "shape-rendering",
+  "size",
+  "speak",
+  "speak-as",
+  "src",
+  "stop-color",
+  "stop-opacity",
+  "stroke",
+  "stroke-color",
+  "stroke-dasharray",
+  "stroke-dashoffset",
+  "stroke-linecap",
+  "stroke-linejoin",
+  "stroke-miterlimit",
+  "stroke-opacity",
+  "stroke-width",
+  "supported-color-schemes",
+  "syntax",
+  "tab-size",
+  "table-layout",
+  "text-align",
+  "text-align-last",
+  "text-anchor",
+  "text-combine-upright",
+  "text-decoration",
+  "text-decoration-color",
+  "text-decoration-line",
+  "text-decoration-skip",
+  "text-decoration-skip-ink",
+  "text-decoration-style",
+  "text-decoration-thickness",
+  "text-emphasis",
+  "text-emphasis-color",
+  "text-emphasis-position",
+  "text-emphasis-style",
+  "text-indent",
+  "text-justify",
+  "text-kashida",
+  "text-kashida-space",
+  "text-line-through",
+  "text-line-through-color",
+  "text-line-through-mode",
+  "text-line-through-style",
+  "text-line-through-width",
+  "text-orientation",
+  "text-overflow",
+  "text-overline",
+  "text-overline-color",
+  "text-overline-mode",
+  "text-overline-style",
+  "text-overline-width",
+  "text-rendering",
+  "text-shadow",
+  "text-size-adjust",
+  "text-transform",
+  "text-underline",
+  "text-underline-color",
+  "text-underline-mode",
+  "text-underline-offset",
+  "text-underline-position",
+  "text-underline-style",
+  "text-underline-width",
+  "top",
+  "touch-action",
+  "transform",
+  "transform-box",
+  "transform-origin",
+  "transform-origin-x",
+  "transform-origin-y",
+  "transform-origin-z",
+  "transform-style",
+  "transition",
+  "transition-delay",
+  "transition-duration",
+  "transition-property",
+  "transition-timing-function",
+  "translate",
+  "unicode-bidi",
+  "unicode-range",
+  "user-select",
+  "user-zoom",
+  "vector-effect",
+  "vertical-align",
+  "viewport-fit",
+  "visibility",
+  "white-space",
+  "widows",
+  "width",
+  "will-change",
+  "word-break",
+  "word-spacing",
+  "word-wrap",
+  "writing-mode",
+  "x",
+  "y",
+  "z-index",
+  "zoom"
+];
+
+function CSSPropertyToIDLAttribute(property, lowercaseFirstFlag=false) {
+  let output = "";
+  let uppercaseNext = false;
+  if (lowercaseFirstFlag) {
+    property = property.substring(1);
+  }
+  for (let c of property) {
+    if (c === "-") {
+      uppercaseNext = true;
+    } else if (uppercaseNext) {
+      uppercaseNext = false;
+      if (c >= "a" && c <= "z") {
+        output += c.toUpperCase();
+      } else {
+        output += c;
+      }
+    } else {
+      output += c;
+    }
+  }
+  return output;
+}
+
+const styledecl = document.getElementById("testElement").style;
+
+for (let prop of properties) {
+  test(() => {
+    const camelCase = CSSPropertyToIDLAttribute(prop);
+    const supports = CSS.supports(prop, "inherit"); // inherit is always a valid value
+    assert_equals(supports, camelCase in styledecl);
+  }, `${prop}: _camel_cased_attribute v. CSS.supports`);
+
+  if (prop[0] == "-") {
+    if (prop.startsWith("-webkit-")) {
+      test(() => {
+        const webkitCased = CSSPropertyToIDLAttribute(prop, true);
+        const supports = CSS.supports(prop, "inherit"); // inherit is always a valid value
+        assert_equals(supports, webkitCased in styledecl);
+      }, `${prop}: _webkit_cased_attribute v. CSS.supports`);
+    } else {
+      test(() => {
+        const webkitCased = CSSPropertyToIDLAttribute(prop, true);
+        assert_false(webkitCased in styledecl);
+      }, `${prop}: _webkit_cased_attribute must only exist for -webkit-`);
+    }
+  }
+
+  if (prop.indexOf("-") >= 0) {
+    test(() => {
+      const supports = CSS.supports(prop, "inherit"); // inherit is always a valid value
+      assert_equals(supports, prop in styledecl);
+    }, `${prop}: _dashed_attribute v. CSS.supports`);
+  }
+}
+
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-overflow/reference/webkit-line-clamp-dynamic-001-ref.html b/tests/wpt/web-platform-tests/css/css-overflow/reference/webkit-line-clamp-dynamic-001-ref.html
new file mode 100644
index 00000000000..21458953df9
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-overflow/reference/webkit-line-clamp-dynamic-001-ref.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<style>
+#container {
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  font-size: 20px;
+  width: 10ch;
+}
+</style>
+<body>
+  <div id="container">
+    abc def ghi jkl mno pqr stu vwx yz
+    123 456 789
+  </div>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-overflow/webkit-line-clamp-dynamic-001.html b/tests/wpt/web-platform-tests/css/css-overflow/webkit-line-clamp-dynamic-001.html
new file mode 100644
index 00000000000..fc4f2f9e4db
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-overflow/webkit-line-clamp-dynamic-001.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<title>CSS Overflow: appending to a box with -webkit-line-clamp</title>
+<link rel="help" href="https://drafts.csswg.org/css-overflow-3/#webkit-line-clamp">
+<link rel="match" href="reference/webkit-line-clamp-dynamic-001-ref.html">
+<link rel="author" title="Koji Ishii" href="mailto:kojii@chromium.org">
+<style>
+#container {
+  display: -webkit-box;
+  -webkit-line-clamp: 2;
+  -webkit-box-orient: vertical;
+  font-size: 20px;
+  width: 10ch;
+}
+</style>
+<body>
+  <div id="container">
+    abc def ghi jkl mno pqr stu vwx yz
+  </div>
+<script>
+testAppend();
+function testAppend() {
+  document.body.offsetTop;
+  let span = document.createElement('span');
+  span.textContent = '123 456 789';
+  container.appendChild(span);
+}
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-paint-api/idlharness.html b/tests/wpt/web-platform-tests/css/css-paint-api/idlharness.html
index 5532779d29f..3c4aa98d615 100644
--- a/tests/wpt/web-platform-tests/css/css-paint-api/idlharness.html
+++ b/tests/wpt/web-platform-tests/css/css-paint-api/idlharness.html
@@ -11,7 +11,7 @@
 
   idl_test(
     ["css-paint-api"],
-    ["cssom", "html", "worklets"]
+    ["cssom", "html"]
     // No objects in Window global
   );
 </script>
diff --git a/tests/wpt/web-platform-tests/css/css-scrollbars/scrollbar-width-parsing.html b/tests/wpt/web-platform-tests/css/css-scrollbars/scrollbar-width-parsing.html
new file mode 100644
index 00000000000..2d45fe230a4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-scrollbars/scrollbar-width-parsing.html
@@ -0,0 +1,30 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>CSS Overflow: parsing scrollbar-width declarations</title>
+<link rel="author" title="Felipe Erias Morandeira" href="mailto:felipeerias@gmail.com"/>
+<link rel="help" href="https://drafts.csswg.org/css-scrollbars/"/>
+<meta name="assert" content="Parsing scrollbar-width declarations">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+
+<script>
+
+    test_valid_value("scrollbar-width", "auto");
+    test_valid_value("scrollbar-width", "thin");
+    test_valid_value("scrollbar-width", "none");
+
+    test_invalid_value("scrollbar-width", "");
+    test_invalid_value("scrollbar-width", "auto none");
+    test_invalid_value("scrollbar-width", "thin auto");
+    test_invalid_value("scrollbar-width", "none thin");
+    test_invalid_value("scrollbar-width", "auto thin none");
+    test_invalid_value("scrollbar-width", "tiny");
+    test_invalid_value("scrollbar-width", "enormous");
+    test_invalid_value("scrollbar-width", "12px");
+    test_invalid_value("scrollbar-width", "3em");
+    test_invalid_value("scrollbar-width", "20%");
+    test_invalid_value("scrollbar-width", "#FF0000");
+    test_invalid_value("scrollbar-width", "red green");
+
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-typed-om/the-stylepropertymap/properties/scrollbar-gutter.html b/tests/wpt/web-platform-tests/css/css-typed-om/the-stylepropertymap/properties/scrollbar-gutter.html
index 5bf8cb07dd8..aeab1cb1143 100644
--- a/tests/wpt/web-platform-tests/css/css-typed-om/the-stylepropertymap/properties/scrollbar-gutter.html
+++ b/tests/wpt/web-platform-tests/css/css-typed-om/the-stylepropertymap/properties/scrollbar-gutter.html
@@ -1,6 +1,6 @@
 <!doctype html>
 <meta charset="utf-8">
-<title>'display' property</title>
+<title>'scrollbar-gutter' property</title>
 <link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymap-get">
 <link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymap-set">
 <link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#property-stle-value-normalization">
diff --git a/tests/wpt/web-platform-tests/css/css-typed-om/the-stylepropertymap/properties/scrollbar-width.html b/tests/wpt/web-platform-tests/css/css-typed-om/the-stylepropertymap/properties/scrollbar-width.html
new file mode 100644
index 00000000000..19a6ebd5b95
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-typed-om/the-stylepropertymap/properties/scrollbar-width.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>'scrollbar-width' property</title>
+<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymap-get">
+<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#dom-stylepropertymap-set">
+<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#property-stle-value-normalization">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../../resources/testhelper.js"></script>
+<script src="resources/testsuite.js"></script>
+<body>
+<div id="log"></div>
+<script>
+'use strict';
+
+runPropertyTests('scrollbar-width', [
+  { syntax: 'auto' },
+  { syntax: 'thin' },
+  { syntax: 'none' },
+]);
+
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-003.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-003.xht
index 2dda4210797..7f882988f5e 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-003.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-003.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-005.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-005.xht
index a0e8943493e..13e093b37b5 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-005.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-005.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-007.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-007.xht
index c43d7d2eb2c..109eae24653 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-007.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-007.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-009.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-009.xht
index 746fab562a8..abea2c06dcf 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-009.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-009.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-011.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-011.xht
index db8eb019631..9cf287c3368 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-011.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-011.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-013.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-013.xht
index 7721919ac6f..890a2b48903 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-013.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-013.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-021.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-021.xht
index 4da9a5fbd6a..043c0cd22b2 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-021.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-021.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-023.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-023.xht
index ae5a2f53025..ac3a5d275c1 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-023.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vlr-023.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-002.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-002.xht
index 422f7d75d67..c2d8b434903 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-002.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-002.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-004.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-004.xht
index 4f3f06f578e..ddc8e201c0b 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-004.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-004.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-006.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-006.xht
index 0776ff9280c..a02d96dcb3e 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-006.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-006.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-008.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-008.xht
index 69485d7010b..08bec439e37 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-008.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-008.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-010.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-010.xht
index ca6f77d83e2..845fac0e6d9 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-010.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-010.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-012.xht b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-012.xht
index 9376aee0ff0..7460f18c527 100644
--- a/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-012.xht
+++ b/tests/wpt/web-platform-tests/css/css-writing-modes/line-box-height-vrl-012.xht
@@ -8,7 +8,7 @@
 
   <!--
   Test inspired by
-  https://dxr.mozilla.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
+  https://searchfox.org/mozilla-central/source/layout/reftests/writing-mode/1130907-intrinsic-sizing-2.html
   -->
 
   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
diff --git a/tests/wpt/web-platform-tests/css/cssom/serialize-media-rule.html b/tests/wpt/web-platform-tests/css/cssom/serialize-media-rule.html
index 94b37dc1a95..90561fdf709 100644
--- a/tests/wpt/web-platform-tests/css/cssom/serialize-media-rule.html
+++ b/tests/wpt/web-platform-tests/css/cssom/serialize-media-rule.html
@@ -132,9 +132,9 @@ test(function(t) {
   );
   assert_equals(
     sheet.cssRules[1].cssText,
-    '@media screen and (color) and (max-width: 0px) {\n}'
+    '@media screen and (max-width: 0px) and (color) {\n}'
   );
-}, 'features - lexicographical sorting');
+}, 'features - no lexicographical sorting');
 
 test(function(t) {
   var sheet = makeSheet(t);
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/README b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/README
index d6aa03a9181..7b0be875a7d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/README
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/README
@@ -1,4 +1,5 @@
-THIS DIRECTORY IS NOT THE MASTER COPY!  DO NOT EDIT TESTS HERE!
+This directory is the remains of an earlier wpt sync system.
 
-This directory is automatically synced from layout/reftests/w3c-css/submitted/
-(which is the master copy) in https://hg.mozilla.org/mozilla-central/
+Tests should be moved into the correct directory under css/.
+
+In the meantime, feel free to fix any test bugs in the usual way.
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001-print-ref.html
similarity index 100%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001-print-ref.html
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001-print.html
similarity index 84%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001-print.html
index e2e00f99b44..61b72e2ab96 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/break3/moz-block-fragmentation-001-print.html
@@ -1,11 +1,11 @@
 <!DOCTYPE html>
-<html class="reftest-paged">
+<html>
 <title>
   Overflowing content does not affect whether a fixed-height box fits on a page,
   but does get printed on the next page.
 </title>
 <meta name="flags" content="may print">
-<link rel="match" href="moz-block-fragmentation-001-ref.html">
+<link rel="match" href="moz-block-fragmentation-001-print-ref.html">
 <link rel="help" href="https://www.w3.org/TR/css-break-3/#parallel-flows">
 <style>
   * {
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-1.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-1-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-1.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-1-print.html
index 26067124695..25e1c44c78b 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-1.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-1-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-10.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-10-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-10.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-10-print.html
index 89b48c5790f..3b1c13ee91d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-10.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-10-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11-print.html
index 6bd65bf00ff..e4fed2afe3e 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-11-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-12.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-12-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-12.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-12-print.html
index 8b7c7c3b357..74e01baf54b 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-12.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-12-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-13.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-13-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-13.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-13-print.html
index f5296abab0b..b91b27efdeb 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-13.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-13-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-8-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-8-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-print-ref.html
index 26a67faddf5..434ecac9456 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-print.html
similarity index 91%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-print.html
index a1f77d6a3a7..8d4d5b10579 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-14-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-14-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-14-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-print-ref.html
index 0a88ee436dc..b46ea73e77e 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-print.html
similarity index 91%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-print.html
index 6732def1450..88109bbcd16 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-15-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-15-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-15-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-2.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-2-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-2.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-2-print.html
index aaeb1b6c7af..0f744520c07 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-2.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-2-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-3.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-3-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-3.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-3-print.html
index 21ffc279b2e..7421667b5d6 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-3.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-3-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-4.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-4-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-4.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-4-print.html
index 3c7b6d5da17..57c74da91be 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-4.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-4-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-5.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-5-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-5.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-5-print.html
index 3047e8b22f9..c79952314d2 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-5.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-5-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-6.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-6-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-6.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-6-print.html
index d65052abcc7..a66a8b25278 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-6.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-6-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-7.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-7-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-7.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-7-print.html
index 2ce9933e29a..790f65027c7 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-7.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-7-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-print-ref.html
index 796ac545e51..6c47d6af765 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-print.html
index 2e13cff74fd..66d7caa1cc4 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-8-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-8-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-8-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-9.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-9-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-9.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-9-print.html
index 7bcd746171d..63e6a6e84f6 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-9.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-9-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-print-ref.html
similarity index 91%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-print-ref.html
index a340bc1d5c4..7dfe3f126be 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-block-page-break-inside-avoid-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-1.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-1-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-1.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-1-print.html
index 4f24e6f260c..863598e2c12 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-1.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-1-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-print-ref.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-print-ref.html
index e1189155922..3e4f04cc72b 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-print.html
index 6995d93a1a1..da98a6e8a2d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-2-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-float-page-break-inside-avoid-2-ref.html">
+  <link rel="match" href="moz-css21-float-page-break-inside-avoid-2-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-3.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-3-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-3.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-3-print.html
index d4f6af8aef5..98536cc9f13 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-3.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-3-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-4.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-4-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-4.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-4-print.html
index 0646884a97c..005adc6619d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-4.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-4-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-block-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-block-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-print-ref.html
similarity index 95%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-print-ref.html
index 01331f22761..0da2e292f15 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-print.html
similarity index 94%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-print.html
index 5990392f841..856cd98674b 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-5-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-float-page-break-inside-avoid-5-ref.html">
+  <link rel="match" href="moz-css21-float-page-break-inside-avoid-5-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-print-ref.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-print-ref.html
index a5a075f4890..5f45af72e09 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-print.html
index 3cd0a5fb1c4..b8642fe5686 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-6-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-float-page-break-inside-avoid-6-ref.html">
+  <link rel="match" href="moz-css21-float-page-break-inside-avoid-6-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-print-ref.html
index 922165e6ab4..9698e5018d8 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
@@ -9,7 +9,7 @@ html,body {
     color:black; background-color:white; font-size:16px; padding:0; margin:0; height:100%;
 }
 
-.test { 
+.test {
   height:60%;
   float:left;
   clear:left;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-print.html
similarity index 91%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-print.html
index 01c33da0181..1a80825c523 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-7-print.html
@@ -1,17 +1,17 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-float-page-break-inside-avoid-7-ref.html">
+  <link rel="match" href="moz-css21-float-page-break-inside-avoid-7-print-ref.html">
   <meta name="flags" content="paged"><style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
 html,body {
     color:black; background-color:white; font-size:16px; padding:0; margin:0; height:100%;
 }
 
-.test { 
+.test {
   page-break-inside:avoid;
   height:60%;
   float:left;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-print-ref.html
index a6f5e07b246..d80fc4b0b62 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
@@ -9,7 +9,7 @@ html,body {
     color:black; background-color:white; font-size:16px; padding:0; margin:0; height:100%;
 }
 
-.test { 
+.test {
   height:60%;
   float:left;
   clear:left;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-print.html
index 1c146aa919e..83806d551e2 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-8-print.html
@@ -1,17 +1,17 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-float-page-break-inside-avoid-8-ref.html">
+  <link rel="match" href="moz-css21-float-page-break-inside-avoid-8-print-ref.html">
   <meta name="flags" content="paged"><style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
 html,body {
     color:black; background-color:white; font-size:16px; padding:0; margin:0; height:100%;
 }
 
-.test { 
+.test {
   page-break-inside:avoid;
   height:60%;
   float:left;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-print-ref.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-print-ref.html
index 023495fe660..69e213c8763 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
@@ -9,7 +9,7 @@ html,body {
     color:black; background-color:white; font-size:16px; padding:0; margin:0; height:100%;
 }
 
-.test { 
+.test {
   height:60%;
   float:left;
   clear:left;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-print.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-print.html
index cb708cb768c..8a601fa6d84 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-float-page-break-inside-avoid-9-print.html
@@ -1,17 +1,17 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-float-page-break-inside-avoid-9-ref.html">
+  <link rel="match" href="moz-css21-float-page-break-inside-avoid-9-print-ref.html">
   <meta name="flags" content="paged"><style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
 html,body {
     color:black; background-color:white; font-size:16px; padding:0; margin:0; height:100%;
 }
 
-.test { 
+.test {
   page-break-inside:avoid;
   height:60%;
   float:left;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-print-ref.html
index b07f4d56954..ac129c03aa2 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-print.html
index ff00c41cbce..7993051103c 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-inline-page-break-inside-avoid-1-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-inline-page-break-inside-avoid-1-ref.html">
+  <link rel="match" href="moz-css21-inline-page-break-inside-avoid-1-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-1.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-1-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-1.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-1-print.html
index 5053fa80598..64793ae1056 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-1.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-1-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-5-ref.html">
+  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-5-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2-print.html
index 0ec44645329..bad70cedcdb 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-row-page-break-inside-avoid-2-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-5-ref.html">
+  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-5-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-1.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-1-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-1.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-1-print.html
index e59646e25b3..e3b4be6c7a0 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-1.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-1-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-2.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-2-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-2.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-2-print.html
index 3f82437bc02..0d05e60fcd8 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-2.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-2-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-3.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-3-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-3.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-3-print.html
index 32484c3f4c9..3a238673b6c 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-3.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-3-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-print-ref.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-print-ref.html
index c0850a7cf00..c7c0abdf196 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-print.html
index 306a7fc1285..d3d65813e6d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-4-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-4-ref.html">
+  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-4-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-print-ref.html
index c6c482abc7a..c08a376bfaf 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-print.html
index d3534bb5361..1e5a5f63eb7 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-5-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-5-ref.html">
+  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-5-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-6.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-6-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-6.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-6-print.html
index c0d64e92253..683d9922436 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-6.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-6-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-5-ref.html">
+  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-5-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-print-ref.html
index 0496203450f..e425f034acb 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-print.html
index d6b53e85cce..0c4b35b9035 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-7-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-7-ref.html">
+  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-7-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-print-ref.html
index e2bac8885b9..0ff37fc97e9 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-print.html
index 1caa4764985..8cde0d5aa5b 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-rowgroup-page-break-inside-avoid-8-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-8-ref.html">
+  <link rel="match" href="moz-css21-rowgroup-page-break-inside-avoid-8-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-1.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-1-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-1.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-1-print.html
index 073f7eb89c6..ea4ded5d1bf 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-1.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-1-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-print-ref.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-print-ref.html
index 377ce2083ad..61f1c9735b6 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-print.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-print.html
index cc6a55933f6..14e529e12a9 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-2-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-2-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-2-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-print-ref.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-print-ref.html
index 374675b8f05..19b0c40b209 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-print.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-print.html
index 852145f8937..bd236d1adf5 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-3-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-3-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-3-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-print-ref.html
index 73f4c86b274..87abef85414 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-print.html
index e71c0b1d8ba..0c22aff7a0d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-4-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-4-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-4-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-print-ref.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-print-ref.html
index 1101c4bc06b..ddb23f6f447 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-print.html
similarity index 93%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-print.html
index e7443b08f5a..a1a9c5844fb 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-5-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-5-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-5-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-print-ref.html
index f83247cdfd0..b9adb9082fc 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-print.html
index fbe1ee46371..622129945ce 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-6-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-6-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-6-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-print-ref.html
index cc4a31c2901..46b41fb0c15 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-print.html
index 52eca20f2a8..1248e747091 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-7-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-7-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-7-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-8.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-8-print.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-8.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-8-print.html
index f0caa18aea9..c1740f2c63c 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-8.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-8-print.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
   <link rel="help" href="http://www.w3.org/TR/CSS21/page.html#propdef-page-break-inside">
-  <link rel="match" href="moz-css21-table-page-break-inside-avoid-6-ref.html">
+  <link rel="match" href="moz-css21-table-page-break-inside-avoid-6-print-ref.html">
   <meta name="flags" content="paged">
 <style type="text/css">
 @page { size:5in 3in; margin:0.5in; }
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-print-ref.html
similarity index 92%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-ref.html
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-print-ref.html
index d52a38713ac..afbaf992cf8 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/css21/pagination/moz-css21-table-page-break-inside-avoid-print-ref.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en-US" class="reftest-paged">
+<html lang="en-US">
 <head>
   <title>CSS Test: CSS 2.1 page-break-inside:avoid</title>
   <link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=685012">
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001-ref.html
index d799648c2bc..b9f158093e7 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-16x8.png");
         background-size: contain;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .bigWide {
         width: 48px;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001c.html
index fa7a72fc39f..4fb7f113897 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001e.html
index e9376ef0603..20a5f8ae560 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001i.html
index c84aeaac4ed..6605be2e1a4 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001o.html
index 967a2d7dc57..36761156bb3 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001p.html
index 44b4b7265d0..ac00ec44d1d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-001p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002-ref.html
index 8c0530eeede..804bde94c1b 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-8x16.png");
         background-size: contain;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .bigWide {
         width: 48px;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002c.html
index 08164cc4c5f..738c015a52e 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002e.html
index abff8e6c574..6132fdc27d6 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002i.html
index 27f3c1d9615..222ac9e7356 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002o.html
index 5ff31b9983a..6e0b555e57e 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002p.html
index 5252629c6f9..97a150e582a 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-contain-png-002p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: contain;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001-ref.html
index 70efcde8e12..96a1ec64b21 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-16x8.png");
         background-size: cover;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .bigWide {
         width: 48px;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001c.html
index 596b61f7182..2a0071a01ce 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001e.html
index 8817a70fb73..1091e01b7aa 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001i.html
index f81d2da220b..8db4683c274 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001o.html
index 609e55a20c1..8e40b532ca4 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001p.html
index ffb58421da0..a75a977a37b 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-001p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002-ref.html
index 5d66cb70014..9dc589abeb6 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-8x16.png");
         background-size: cover;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .bigWide {
         width: 48px;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002c.html
index 07c00f86c60..66836651fb4 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002e.html
index 703fe3a5d7c..8dab30ccfd1 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002i.html
index a930cbcbe5d..1866fde155d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002o.html
index 3ffc359d121..a36ddbfce8e 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002p.html
index 9b63ceb9141..36222054b03 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-cover-png-002p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: cover;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001-ref.html
index 0ef38c0e7f9..19a03a19e47 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-16x8.png");
         background-size: 100% 100%;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .bigWide {
         width: 48px;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001c.html
index cc2c55883ba..36031175e63 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001e.html
index fa3a3e2749c..08aa6b23fe2 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001i.html
index 40ef57ff8f4..90692c30cb5 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001o.html
index 5016e6add42..b57528b125d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001p.html
index 7b169b83133..1e30e7aef4c 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-001p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002-ref.html
index 0307fd7e2fd..b05469cf6e3 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-8x16.png");
         background-size: 100% 100%;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .bigWide {
         width: 48px;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002c.html
index 5c27b817d92..a332c37f4f0 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002e.html
index 9df2152a441..d5903c2004d 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002i.html
index af4cf7d3cce..b5abd3d8001 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002o.html
index d1f31f52855..a8904f2a4ed 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002p.html
index b26ec99836e..e0b44135ec9 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-fill-png-002p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: fill;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001-ref.html
index 9538667987b..bd25ed754e0 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-16x8.png");
         background-size: auto auto;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .bigWide {
         width: 48px;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001c.html
index c45525dd257..fe483baa963 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001e.html
index 1b91595736c..91be966a408 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001i.html
index d585c64289c..39d7e475c3b 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001o.html
index 46718044256..f1d702a5c64 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001p.html
index 8e1aedc30b7..85edee90804 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-001p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002-ref.html
index 8b511a06350..8273d3b21e5 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-8x16.png");
         background-size: auto auto;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .bigWide {
         width: 48px;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002c.html
index 8f90673f080..09bc836d024 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002e.html
index 4ffb1cb0acb..ce3e07e7df5 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002i.html
index 0e9a742c466..1f33b5758ac 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002o.html
index 937a65ee8de..2b1083628e5 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002p.html
index 16a731f9030..656515ddebd 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-none-png-002p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: none;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001-ref.html
index f17ef04aaf2..abf3788be2a 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-16x8.png");
         background-size: auto auto;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .objectOuter > .small { background-size: contain; }
       .bigWide {
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001c.html
index 8fda7abbd98..5b8116ecbcb 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001e.html
index d8d9df903b9..c2f587405fd 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001i.html
index 29cffb57b36..0fd12092459 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001o.html
index 182cad288c5..bed477d0481 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001p.html
index c44b29131d9..ff152315ff9 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-001p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002-ref.html
index ce2dd46ae53..3e516985f8c 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002-ref.html
@@ -18,7 +18,7 @@
         background-image: url("support/colors-8x16.png");
         background-size: auto auto;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       .objectOuter > .small { background-size: contain; }
       .bigWide {
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002c.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002c.html
index ad1497d6d2d..626f379f1c7 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002c.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002c.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002e.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002e.html
index bdc4307cf72..4190c5f1f38 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002e.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002e.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002i.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002i.html
index fbf42679500..dc3fcc2a41a 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002i.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002i.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002o.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002o.html
index 34de3135c61..f7dcca2ecc5 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002o.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002o.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002p.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002p.html
index 1ed858ff88e..6d05ee0b254 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002p.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/object-fit-scale-down-png-002p.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: scale-down;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/support/template-object-fit-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/support/template-object-fit-ref.html
index 14a38e45897..068c74b4e41 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/support/template-object-fit-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/support/template-object-fit-ref.html
@@ -18,7 +18,7 @@
         background-image: url("REPLACEME_IMAGE_FILENAME");
         background-size: REPLACEME_BACKGROUND_SIZE_VAL;
         background-repeat: no-repeat;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
       }
       REPLACEME_SCALE_DOWN_EXTRA_RULE
       .bigWide {
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/support/template-object-fit-test.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/support/template-object-fit-test.html
index d939f87829e..8ec4664db92 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/support/template-object-fit-test.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/images3/support/template-object-fit-test.html
@@ -17,7 +17,7 @@
         border: 1px dashed gray;
         padding: 1px;
         object-fit: REPLACEME_OBJECT_FIT_VAL;
-        image-rendering: pixelated;
+        image-rendering: crisp-edges;
         float: left;
       }
 
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/reference/multicol-height-002.xht b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002-print-ref.xht
similarity index 97%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/reference/multicol-height-002.xht
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002-print-ref.xht
index 16e7f1b3ddb..24943560c30 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/reference/multicol-height-002.xht
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002-print-ref.xht
@@ -1,6 +1,6 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml">
- <head class="reftest-paged">
+ <head>
   <title>CSS Reftest Reference</title>
   <link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact" />
   <style type="text/css"><![CDATA[
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002.xht b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002-print.xht
similarity index 94%
rename from tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002.xht
rename to tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002-print.xht
index aaf544cb16b..ccc78803d47 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002.xht
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/multicol3/multicol-height-002-print.xht
@@ -1,13 +1,13 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml">
- <head class="reftest-paged">
+ <head>
   <title>CSS Test: Percentage Computed Height on Multicol Child (Definite Multicol Height)</title>
   <link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact" />
   <link rel="help" href="http://www.w3.org/TR/css3-multicol/#the-multi-column-model" />
   <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#the-height-property"/>
   <meta name="flags" content="" />
   <meta name="assert" content="Percentage heights with a multi-column element are relative to the computed height of the multicolumn box, and this works even when the multi-column element is paginated." />
-  <link rel="match" href="reference/multicol-height-002.xht" />
+  <link rel="match" href="multicol-height-002-print-ref.xht" />
   <style type="text/css"><![CDATA[
     html, body { height: 100%; }
     * { margin: 0; }
diff --git a/tests/wpt/web-platform-tests/docs/writing-tests/general-guidelines.md b/tests/wpt/web-platform-tests/docs/writing-tests/general-guidelines.md
index b8b8e49af51..1ec9117a2d1 100644
--- a/tests/wpt/web-platform-tests/docs/writing-tests/general-guidelines.md
+++ b/tests/wpt/web-platform-tests/docs/writing-tests/general-guidelines.md
@@ -106,7 +106,7 @@ the test (for a typical testharness test, the only content on the page
 will be rendered by the harness itself).
 
 
-### Be Minimal
+### Be Conservative
 
 Tests should generally avoid depending on edge case behavior of
 features that they don't explicitly intend on testing. For example,
@@ -117,6 +117,30 @@ This is not, however, to discourage testing of edge cases or
 interactions between multiple features; such tests are an essential
 part of ensuring interoperability of the web platform.
 
+Tests should pass when the feature under test exposes the expected behavior,
+and they should fail when the feature under test is not implemented or is
+implemented incorrectly. Tests should not rely on unrelated features if doing
+so causes failures in the latest stable release of [Apple
+Safari][apple-safari], [Google Chrome][google-chrome], or [Mozilla
+Firefox][mozilla-firefox]. They should, therefore, not rely on any features
+aside from the one under test unless they are supported in all three browsers.
+
+Existing tests can be used as a guide to identify acceptable features. For
+language features that are not used in existing tests, community-maintained
+projects such as [the ECMAScript compatibility tables][es-compat] and
+[caniuse.com][caniuse] provide an overview of basic feature support across the
+browsers listed above.
+
+For JavaScript code that is re-used across many tests (e.g. `testharness.js`
+and the files located in the directory named `common`), only use language
+features that have been supported by each of the major browser engines above
+for over a year. This practice avoids introducing test failures for consumers
+maintaining older JavaScript runtimes.
+
+Patches to make tests run on older versions or other browsers will be accepted
+provided they are relatively simple and do not add undue complexity to the
+test.
+
 
 ### Be Cross-Platform
 
@@ -197,3 +221,8 @@ for CSS have some additional requirements for:
 [css-metadata]: css-metadata
 [css-user-styles]: css-user-styles
 [file-name-flags]: file-names
+[mozilla-firefox]: https://mozilla.org/firefox
+[google-chrome]: https://google.com/chrome/browser/desktop/
+[apple-safari]: https://apple.com/safari
+[es-compat]: https://kangax.github.io/compat-table/
+[caniuse]: https://caniuse.com/
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-acceptNode-filter.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-acceptNode-filter.html
index acd3804fade..282dc9d142b 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-acceptNode-filter.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-acceptNode-filter.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <!--
-Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/acceptNode-filter.js
+Test adapted from chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/acceptNode-filter.js
 -->
 <head>
 <title>TreeWalker: acceptNode-filter</title>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-basic.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-basic.html
index 4e14ac421ef..bd8b1128408 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-basic.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-basic.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <!--
-Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/TreeWalker-basic.html
+Test adapted from chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/TreeWalker-basic.html
 -->
 <head>
 <title>TreeWalker: Basic test</title>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-currentNode.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-currentNode.html
index 7c5d8810a86..f795abe0d29 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-currentNode.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-currentNode.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <!--
-Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/resources/TreeWalker-currentNode.js
+Test adapted from chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/resources/TreeWalker-currentNode.js
 -->
 <head>
 <title>TreeWalker: currentNode</title>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousNodeLastChildReject.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousNodeLastChildReject.html
index 0147b81112e..e24ca06e209 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousNodeLastChildReject.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousNodeLastChildReject.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <!--
-Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/previousNodeLastChildReject.js
+Test adapted from chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/previousNodeLastChildReject.js
 -->
 <head>
 <title>TreeWalker: previousNodeLastChildReject</title>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousSiblingLastChildSkip.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousSiblingLastChildSkip.html
index 5566564d240..5e28aa5142f 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousSiblingLastChildSkip.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousSiblingLastChildSkip.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <!--
-Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/previousSiblingLastChildSkip.js
+Test adapted from chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/previousSiblingLastChildSkip.js
 -->
 <head>
 <title>TreeWalker: previousSiblingLastChildSkip</title>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-reject.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-reject.html
index 53b734188c4..d6c96adc114 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-reject.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-reject.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <!--
-Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/traversal-reject.js
+Test adapted from chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/traversal-reject.js
 -->
 <head>
 <title>TreeWalker: traversal-reject</title>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-skip-most.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-skip-most.html
index 173922c15e6..b6eafd45968 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-skip-most.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-skip-most.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <!--
-Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/traversal-skip-most.js
+Test adapted from chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/traversal-skip-most.js
 -->
 <head>
 <title>TreeWalker: traversal-skip-most</title>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-skip.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-skip.html
index 8c6f2bf22be..6bbebe667ea 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-skip.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-traversal-skip.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html>
 <!--
-Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/traversal-skip.js
+Test adapted from chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/traversal-skip.js
 -->
 <head>
 <title>TreeWalker: traversal-skip</title>
diff --git a/tests/wpt/web-platform-tests/editing/other/select-all-and-delete-in-html-element-having-contenteditable.html b/tests/wpt/web-platform-tests/editing/other/select-all-and-delete-in-html-element-having-contenteditable.html
new file mode 100644
index 00000000000..e8eb5e5e1ab
--- /dev/null
+++ b/tests/wpt/web-platform-tests/editing/other/select-all-and-delete-in-html-element-having-contenteditable.html
@@ -0,0 +1,151 @@
+<!doctype html>
+<html contenteditable>
+<head>
+<meta charset=utf-8>
+<title>Test "Select all" and deletion work with &lt;html contenteditable&gt;</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+</head>
+<body>
+<script>
+"use strict";
+
+const kBackspaceKey = "\uE003";
+const kDeleteKey = "\uE017";
+const kMeta = "\uE03d";
+const kControl = "\uE009";
+
+async function selectAllWithKey(elementToSelectAll) {
+  if (elementToSelectAll.length === 0) {
+    throw "element to select all must not be empty";
+  }
+  getSelection().collapse(elementToSelectAll, 0);
+  try {
+    await new test_driver.Actions()
+      .keyDown(kControl)
+      .keyDown("a")
+      .keyUp("a")
+      .keyUp(kControl)
+      .send();
+    if (!getSelection().isCollapsed) {
+      return;
+    }
+    await new test_driver.Actions()
+      .keyDown(kMeta)
+      .keyDown("a")
+      .keyUp("a")
+      .keyUp(kMeta)
+      .send();
+    if (!getSelection().isCollapsed) {
+      return;
+    }
+  } catch (ex) {
+    throw ex;
+  }
+  throw "Neither Control-A nor Meta-A does not select all contents";
+}
+
+function deleteWithBackspaceKey() {
+  return new test_driver.Actions()
+    .keyDown(kBackspaceKey)
+    .keyUp(kBackspaceKey)
+    .send();
+}
+
+function deleteWithDeleteKey() {
+  return new test_driver.Actions()
+    .keyDown(kDeleteKey)
+    .keyUp(kDeleteKey)
+    .send();
+}
+
+promise_test(async () => {
+  document.body.innerHTML = "abc";
+  await selectAllWithKey(document.body);
+  await deleteWithBackspaceKey();
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, "Select All, then, Backspace");
+
+promise_test(async () => {
+  document.body.innerHTML = "abc";
+  await selectAllWithKey(document.body);
+  await deleteWithDeleteKey();
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, "Select All, then, Delete");
+
+promise_test(async () => {
+  document.body.innerHTML = "abc";
+  document.execCommand("selectall");
+  await deleteWithBackspaceKey();
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'execCommand("selectall"), then, Backspace');
+
+promise_test(async () => {
+  document.body.innerHTML = "abc";
+  document.execCommand("selectall");
+  await deleteWithDeleteKey();
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'execCommand("selectall"), then, Delete');
+
+promise_test(async () => {
+  document.body.innerHTML = "abc";
+  await selectAllWithKey(document.body);
+  document.execCommand("forwarddelete", false, false);
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'Select All, then, execCommand("forwarddelete")');
+
+promise_test(async () => {
+  document.body.innerHTML = "abc";
+  await selectAllWithKey(document.body);
+  document.execCommand("delete", false, false);
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'Select All, then, execCommand("delete")');
+
+test(() => {
+  document.body.innerHTML = "abc";
+  document.execCommand("selectall");
+  document.execCommand("forwarddelete", false, false);
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'execCommand("selectall"), then, execCommand("forwarddelete")');
+
+test(() => {
+  document.body.innerHTML = "abc";
+  document.execCommand("selectall");
+  document.execCommand("delete", false, false);
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'execCommand("selectall"), then, execCommand("delete")');
+
+promise_test(async () => {
+  document.body.innerHTML = "abc";
+  getSelection().selectAllChildren(document.documentElement);
+  await deleteWithBackspaceKey();
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'getSelection().selectAllChildren(document.documentElement), then, Backspace');
+
+promise_test(async () => {
+  document.body.innerHTML = "abc";
+  getSelection().selectAllChildren(document.documentElement);
+  await deleteWithDeleteKey();
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'getSelection().selectAllChildren(document.documentElement), then, Delete');
+
+test(() => {
+  document.body.innerHTML = "abc";
+  getSelection().selectAllChildren(document.documentElement);
+  document.execCommand("forwarddelete", false, false);
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'getSelection().selectAllChildren(document.documentElement), then, execCommand("forwarddelete")');
+
+test(() => {
+  document.body.innerHTML = "abc";
+  getSelection().selectAllChildren(document.documentElement);
+  document.execCommand("delete", false, false);
+  assert_in_array(document.body.innerHTML, ["", "<br>"]);
+}, 'getSelection().selectAllChildren(document.documentElement), then, execCommand("delete")');
+
+</script>
+</body>
+</html>
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/html/browsers/history/the-history-interface/007.html b/tests/wpt/web-platform-tests/html/browsers/history/the-history-interface/007.html
index 29ed8bf0e00..decb197624c 100644
--- a/tests/wpt/web-platform-tests/html/browsers/history/the-history-interface/007.html
+++ b/tests/wpt/web-platform-tests/html/browsers/history/the-history-interface/007.html
@@ -52,5 +52,15 @@ window.onload = function () {
 
     </script>
 
+  <!--
+    Reuse an existing server side script to slow down page load so that
+    history.go(-1); above gets run before load event fires.
+  -->
+  <script>
+    // define TEST_DELAY so that executing delay.py doesn't warn about use
+    // of undefined variable.
+    var TEST_DELAY;
+  </script>
+  <script src="/xhr/resources/delay.py?ms=2500"></script>
   </body>
 </html>
diff --git a/tests/wpt/web-platform-tests/html/browsers/windows/iframe-cross-origin-print.sub.html b/tests/wpt/web-platform-tests/html/browsers/windows/iframe-cross-origin-print.sub.html
new file mode 100644
index 00000000000..d07db137767
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/browsers/windows/iframe-cross-origin-print.sub.html
@@ -0,0 +1,6 @@
+<!doctype html>
+<link rel=match href="iframe-nested-print-ref.html">
+<style>
+  body { margin: 0 }
+</style>
+<iframe frameborder=0 scrolling=no src="//{{hosts[alt][www]}}:{{ports[http][0]}}{{location[path]}}/../resources/iframe-nested-cross-origin.html"></iframe>
diff --git a/tests/wpt/web-platform-tests/html/browsers/windows/resources/iframe-nested-cross-origin.html b/tests/wpt/web-platform-tests/html/browsers/windows/resources/iframe-nested-cross-origin.html
new file mode 100644
index 00000000000..a1a66ed8425
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/browsers/windows/resources/iframe-nested-cross-origin.html
@@ -0,0 +1,2 @@
+<!doctype html>
+<iframe scrolling=no frameborder=0 srcdoc='PASS'></iframe>
diff --git a/tests/wpt/web-platform-tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html b/tests/wpt/web-platform-tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
index f358d8e2a77..8739265a8b2 100644
--- a/tests/wpt/web-platform-tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
+++ b/tests/wpt/web-platform-tests/html/canvas/element/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
@@ -8,7 +8,7 @@
 <body class="show_output">
 
 <h1>2d.drawImage.zerosource.image</h1>
-<p class="desc">drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR</p>
+<p class="desc">drawImage with zero-sized source rectangle from image draws nothing without exception</p>
 
 
 <p class="output">Actual output:</p>
@@ -16,14 +16,14 @@
 <p class="output expectedtext">Expected output:<p><img src="/images/green-100x50.png" class="output expected" id="expected" alt="">
 <ul id="d"></ul>
 <script>
-var t = async_test("drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR");
+var t = async_test("drawImage with zero-sized source rectangle from image draws nothing without exception");
 _addTest(function(canvas, ctx) {
 
 ctx.fillStyle = '#0f0';
 ctx.fillRect(0, 0, 100, 50);
-assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(document.getElementById('red-zerowidth.svg'), 0, 0, 100, 50); });
-assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(document.getElementById('red-zeroheight.svg'), 0, 0, 100, 50); });
-assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(document.getElementById('red-zerosize.svg'), 0, 0, 100, 50); });
+ctx.drawImage(document.getElementById('red-zerowidth.svg'), 0, 0, 100, 50);
+ctx.drawImage(document.getElementById('red-zeroheight.svg'), 0, 0, 100, 50);
+ctx.drawImage(document.getElementById('red-zerosize.svg'), 0, 0, 100, 50);
 _assertPixel(canvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255");
 
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html
index 3ff3c974fad..d83a935dcf2 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.html
@@ -7,11 +7,11 @@
 <script src="/html/canvas/resources/canvas-tests.js"></script>
 
 <h1>2d.drawImage.zerosource</h1>
-<p class="desc">drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR</p>
+<p class="desc">drawImage with zero-sized source rectangle draws nothing without exception</p>
 
 
 <script>
-var t = async_test("drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR");
+var t = async_test("drawImage with zero-sized source rectangle draws nothing without exception");
 var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
@@ -34,9 +34,9 @@ var promise = new Promise(function(resolve, reject) {
 });
 promise.then(function(response) {
     createImageBitmap(response).then(bitmap => {
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50); });
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50); });
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50); });
+        ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50);
+        ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50);
+        ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50);
         _assertPixelApprox(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2);
     }, t_fail);
 }).then(t_pass, t_fail);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html b/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
index ee2e00ffb92..3a9a1c6f7a3 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.html
@@ -7,11 +7,11 @@
 <script src="/html/canvas/resources/canvas-tests.js"></script>
 
 <h1>2d.drawImage.zerosource.image</h1>
-<p class="desc">drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR</p>
+<p class="desc">drawImage with zero-sized source rectangle from image draws nothing without exception</p>
 
 
 <script>
-var t = async_test("drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR");
+var t = async_test("drawImage with zero-sized source rectangle from image draws nothing without exception");
 var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
@@ -34,9 +34,9 @@ var promise = new Promise(function(resolve, reject) {
 });
 promise.then(function(response) {
     createImageBitmap(response).then(bitmap => {
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 0, 0, 100, 50); });
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 0, 0, 100, 50); });
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 0, 0, 100, 50); });
+        ctx.drawImage(bitmap, 0, 0, 100, 50);
+        ctx.drawImage(bitmap, 0, 0, 100, 50);
+        ctx.drawImage(bitmap, 0, 0, 100, 50);
         _assertPixel(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255");
     }, t_fail);
 }).then(t_pass, t_fail);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js
index f89490da882..200a311f7b2 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.image.worker.js
@@ -1,12 +1,12 @@
 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
 // OffscreenCanvas test in a worker:2d.drawImage.zerosource.image
-// Description:drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR
+// Description:drawImage with zero-sized source rectangle from image draws nothing without exception
 // Note:
 
 importScripts("/resources/testharness.js");
 importScripts("/html/canvas/resources/canvas-tests.js");
 
-var t = async_test("drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR");
+var t = async_test("drawImage with zero-sized source rectangle from image draws nothing without exception");
 var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
@@ -29,9 +29,9 @@ var promise = new Promise(function(resolve, reject) {
 });
 promise.then(function(response) {
     createImageBitmap(response).then(bitmap => {
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 0, 0, 100, 50); });
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 0, 0, 100, 50); });
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 0, 0, 100, 50); });
+        ctx.drawImage(bitmap, 0, 0, 100, 50);
+        ctx.drawImage(bitmap, 0, 0, 100, 50);
+        ctx.drawImage(bitmap, 0, 0, 100, 50);
         _assertPixel(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255");
     }, t_fail);
 }).then(t_pass, t_fail);
diff --git a/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js b/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js
index 5b27ad75461..37ef6d87352 100644
--- a/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js
+++ b/tests/wpt/web-platform-tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.zerosource.worker.js
@@ -1,12 +1,12 @@
 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
 // OffscreenCanvas test in a worker:2d.drawImage.zerosource
-// Description:drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR
+// Description:drawImage with zero-sized source rectangle draws nothing without exception
 // Note:
 
 importScripts("/resources/testharness.js");
 importScripts("/html/canvas/resources/canvas-tests.js");
 
-var t = async_test("drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR");
+var t = async_test("drawImage with zero-sized source rectangle draws nothing without exception");
 var t_pass = t.done.bind(t);
 var t_fail = t.step_func(function(reason) {
     throw reason;
@@ -29,9 +29,9 @@ var promise = new Promise(function(resolve, reject) {
 });
 promise.then(function(response) {
     createImageBitmap(response).then(bitmap => {
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50); });
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50); });
-        assert_throws_dom("INDEX_SIZE_ERR", function() { ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50); });
+        ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50);
+        ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50);
+        ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50);
         _assertPixelApprox(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2);
     }, t_fail);
 }).then(t_pass, t_fail);
diff --git a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/drawing-images-to-the-canvas.yaml b/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/drawing-images-to-the-canvas.yaml
index 208f1289f13..e71f46f61e2 100644
--- a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/drawing-images-to-the-canvas.yaml
+++ b/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/drawing-images-to-the-canvas.yaml
@@ -235,7 +235,7 @@
   expected: green
 
 - name: 2d.drawImage.zerosource.image
-  desc: drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR
+  desc: drawImage with zero-sized source rectangle from image draws nothing without exception
   testing:
   - 2d.drawImage.zerosource
   images:
@@ -245,9 +245,9 @@
   code: |
     ctx.fillStyle = '#0f0';
     ctx.fillRect(0, 0, 100, 50);
-    @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red-zerowidth.svg'), 0, 0, 100, 50);
-    @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red-zeroheight.svg'), 0, 0, 100, 50);
-    @assert throws INDEX_SIZE_ERR ctx.drawImage(document.getElementById('red-zerosize.svg'), 0, 0, 100, 50);
+    ctx.drawImage(document.getElementById('red-zerowidth.svg'), 0, 0, 100, 50);
+    ctx.drawImage(document.getElementById('red-zeroheight.svg'), 0, 0, 100, 50);
+    ctx.drawImage(document.getElementById('red-zerosize.svg'), 0, 0, 100, 50);
     @assert pixel 50,25 == 0,255,0,255;
   expected: green
 
diff --git a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/offscreen/drawing-images-to-the-canvas.yaml b/tests/wpt/web-platform-tests/html/canvas/tools/yaml/offscreen/drawing-images-to-the-canvas.yaml
index 61cdd407fed..a16518864ee 100644
--- a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/offscreen/drawing-images-to-the-canvas.yaml
+++ b/tests/wpt/web-platform-tests/html/canvas/tools/yaml/offscreen/drawing-images-to-the-canvas.yaml
@@ -373,7 +373,7 @@
     }).then(t_pass, t_fail);
 
 - name: 2d.drawImage.zerosource
-  desc: drawImage with zero-sized source rectangle throws INDEX_SIZE_ERR
+  desc: drawImage with zero-sized source rectangle draws nothing without exception
   testing:
   - 2d.drawImage.zerosource
   timeout: long
@@ -393,15 +393,15 @@
     });
     promise.then(function(response) {
         createImageBitmap(response).then(bitmap => {
-            @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50);
-            @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50);
-            @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50);
+            ctx.drawImage(bitmap, 10, 10, 0, 1, 0, 0, 100, 50);
+            ctx.drawImage(bitmap, 10, 10, 1, 0, 0, 0, 100, 50);
+            ctx.drawImage(bitmap, 10, 10, 0, 0, 0, 0, 100, 50);
             @assert pixel 50,25 ==~ 0,255,0,255;
         }, t_fail);
     }).then(t_pass, t_fail);
 
 - name: 2d.drawImage.zerosource.image
-  desc: drawImage with zero-sized source rectangle from image throws INDEX_SIZE_ERR
+  desc: drawImage with zero-sized source rectangle from image draws nothing without exception
   testing:
   - 2d.drawImage.zerosource
   images:
@@ -423,9 +423,9 @@
     });
     promise.then(function(response) {
         createImageBitmap(response).then(bitmap => {
-            @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap, 0, 0, 100, 50);
-            @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap, 0, 0, 100, 50);
-            @assert throws INDEX_SIZE_ERR ctx.drawImage(bitmap, 0, 0, 100, 50);
+            ctx.drawImage(bitmap, 0, 0, 100, 50);
+            ctx.drawImage(bitmap, 0, 0, 100, 50);
+            ctx.drawImage(bitmap, 0, 0, 100, 50);
             @assert pixel 50,25 == 0,255,0,255;
         }, t_fail);
     }).then(t_pass, t_fail);
diff --git a/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-percent-height.html b/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-percent-height.html
deleted file mode 100644
index bbe40785be2..00000000000
--- a/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-percent-height.html
+++ /dev/null
@@ -1,22 +0,0 @@
-<!DOCTYPE html>
-<script src="/resources/testharness.js"></script>
-<script src="/resources/testharnessreport.js"></script>
-<table cellspacing="0" cellpadding="0" style="width:100px; height:60px;">
-  <tr>
-    <td>
-      <fieldset style="border:none; padding:0; height:100%; margin:0; margin-top:13px;">
-        <div><div id="elm"></div></div>
-      </fieldset>
-    </td>
-  </tr>
-</table>
-<script>
-// crbug.com/1138204. Though the specification doesn't mention this behavior,
-// there must be no doubt about the expected behavior.
-test(() => {
-  const fieldset = document.querySelector('fieldset');
-  const initialHeight = fieldset.offsetHeight;
-  document.querySelector('#elm').style.display = 'none';
-  assert_equals(fieldset.offsetHeight, initialHeight);
-}, 'Fieldset with a percent height should not increase the height on every reflow.');
-</script>
diff --git a/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-percentage-block-size.html b/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-percentage-block-size.html
index 1c221555c30..e98de892d30 100644
--- a/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-percentage-block-size.html
+++ b/tests/wpt/web-platform-tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-percentage-block-size.html
@@ -32,6 +32,16 @@
  </fieldset>
 </div>
 
+<table cellspacing="0" cellpadding="0" style="width:100px; height:60px;">
+  <tr>
+    <td>
+      <fieldset style="border:none; padding:0; height:100%; margin:0; margin-top:13px;">
+        <div><div id="elm"></div></div>
+      </fieldset>
+    </td>
+  </tr>
+</table>
+
 <script>
  for (const div of document.querySelectorAll('div[style]')) {
    for (const el of div.firstElementChild.children) {
@@ -42,4 +52,13 @@
      }, `${el.textContent} (${div.getAttribute('style')})`);
    }
  }
+
+// crbug.com/1138204. Though the specification doesn't mention this behavior,
+// there must be no doubt about the expected behavior.
+test(() => {
+  const fieldset = document.querySelector('table fieldset');
+  const initialHeight = fieldset.offsetHeight;
+  document.querySelector('#elm').style.display = 'none';
+  assert_equals(fieldset.offsetHeight, initialHeight);
+}, 'Fieldset with a percentage height should not increase the height on every reflow.');
 </script>
diff --git a/tests/wpt/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html b/tests/wpt/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html
new file mode 100644
index 00000000000..26a77918e0c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/semantics/embedded-content/the-embed-element/embed-document-under-content-visibility.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>HTML Test: The embed element represents a document</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<meta name="assert" content="Ensure document finishes load when focus is attempted before the embed is finished loading">
+
+<style>
+.hidden { content-visibility: hidden; }
+</style>
+<body>
+  <script>
+  async_test(t => {
+    window.onload = () => t.done();
+  }, "ensure onload happens");
+  </script>
+  <div class=hidden>
+    <embed id=target src="embed-iframe.html">
+  </div>
+  <script>
+    // Ensure we process style in the hidden object, which normally delays
+    // load until the embed object is finished loading.
+    target.focus();
+  </script>
+</body>
diff --git a/tests/wpt/web-platform-tests/interfaces/html.idl b/tests/wpt/web-platform-tests/interfaces/html.idl
index 37124323e51..bf8da3733ec 100644
--- a/tests/wpt/web-platform-tests/interfaces/html.idl
+++ b/tests/wpt/web-platform-tests/interfaces/html.idl
@@ -2357,6 +2357,18 @@ interface WorkerLocation {
   readonly attribute USVString hash;
 };
 
+[Exposed=Worklet, SecureContext]
+interface WorkletGlobalScope {};
+
+[Exposed=Window, SecureContext]
+interface Worklet {
+  [NewObject] Promise<undefined> addModule(USVString moduleURL, optional WorkletOptions options = {});
+};
+
+dictionary WorkletOptions {
+  RequestCredentials credentials = "same-origin";
+};
+
 [Exposed=Window]
 interface Storage {
   readonly attribute unsigned long length;
diff --git a/tests/wpt/web-platform-tests/interfaces/worklets.idl b/tests/wpt/web-platform-tests/interfaces/worklets.idl
deleted file mode 100644
index 9c12f6ff925..00000000000
--- a/tests/wpt/web-platform-tests/interfaces/worklets.idl
+++ /dev/null
@@ -1,16 +0,0 @@
-// GENERATED CONTENT - DO NOT EDIT
-// Content was automatically extracted by Reffy into webref
-// (https://github.com/w3c/webref)
-// Source: HTML Standard (https://html.spec.whatwg.org/multipage/worklets.html)
-
-[Exposed=Worklet, SecureContext]
-interface WorkletGlobalScope {};
-
-[Exposed=Window, SecureContext]
-interface Worklet {
-  [NewObject] Promise<undefined> addModule(USVString moduleURL, optional WorkletOptions options = {});
-};
-
-dictionary WorkletOptions {
-  RequestCredentials credentials = "same-origin";
-};
diff --git a/tests/wpt/web-platform-tests/intersection-observer/explicit-root-different-document.tentative.html b/tests/wpt/web-platform-tests/intersection-observer/explicit-root-different-document.tentative.html
new file mode 100644
index 00000000000..15c5e620d5b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/intersection-observer/explicit-root-different-document.tentative.html
@@ -0,0 +1,27 @@
+<!doctype html>
+<meta name="viewport" content="width=device-width,initial-scale=1">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="help" href="https://github.com/w3c/IntersectionObserver/issues/457">
+<style>
+  div {
+    width: 100px;
+    height: 100px;
+    background: blue;
+    margin: 10px
+  }
+</style>
+<div id="root"></div>
+<script>
+let t = async_test("IntersectionObserver reports a (non-intersecting) entry if different-document from the doc");
+let doc = document.implementation.createHTMLDocument("");
+let target = doc.createElement("div");
+doc.body.appendChild(target);
+new IntersectionObserver(
+  t.step_func_done(function(records) {
+    assert_equals(records.length, 1);
+    assert_false(records[0].isIntersecting);
+  }),
+  { root: document.querySelector("#root") }
+).observe(target);
+</script>
diff --git a/tests/wpt/web-platform-tests/intersection-observer/not-in-containing-block-chain.tentative.html b/tests/wpt/web-platform-tests/intersection-observer/not-in-containing-block-chain.tentative.html
new file mode 100644
index 00000000000..4490d0b631e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/intersection-observer/not-in-containing-block-chain.tentative.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<meta name="viewport" content="width=device-width,initial-scale=1">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="help" href="https://github.com/w3c/IntersectionObserver/issues/457">
+<style>
+  div {
+    width: 100px;
+    height: 100px;
+    background: blue;
+    margin: 10px
+  }
+</style>
+<div id="target"></div>
+<div id="root"></div>
+<script>
+let t = async_test("IntersectionObserver reports a (non-intersecting) entry even if not in the containing block chain");
+new IntersectionObserver(
+  t.step_func_done(function(records) {
+    assert_equals(records.length, 1);
+    assert_false(records[0].isIntersecting);
+  }),
+  { root: document.querySelector("#root") }
+).observe(document.querySelector("#target"));
+</script>
diff --git a/tests/wpt/web-platform-tests/intersection-observer/target-in-different-window.html b/tests/wpt/web-platform-tests/intersection-observer/target-in-different-window.html
index 645b7ec1908..fcf5ba94372 100644
--- a/tests/wpt/web-platform-tests/intersection-observer/target-in-different-window.html
+++ b/tests/wpt/web-platform-tests/intersection-observer/target-in-different-window.html
@@ -1,5 +1,9 @@
 <!DOCTYPE html>
 <meta name="viewport" content="width=device-width,initial-scale=1">
+<!--
+  NOTE(emilio): This tests Chrome's behavior but it's not clear that's what the
+  spec asks for, see https://github.com/w3c/IntersectionObserver/issues/456
+-->
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="./resources/intersection-observer-test-utils.js"></script>
diff --git a/tests/wpt/web-platform-tests/loading/preloader-template.tentative.html b/tests/wpt/web-platform-tests/loading/preloader-template.tentative.html
new file mode 100644
index 00000000000..e8163091848
--- /dev/null
+++ b/tests/wpt/web-platform-tests/loading/preloader-template.tentative.html
@@ -0,0 +1,35 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<template>
+  <script src="resources/dummy.js?in-template"></script>
+  <link rel=stylesheet href="resources/dummy.css?in-template-1">
+  <style>
+    @import url("resources/dummy.css?in-template-2");
+  </style>
+</template>
+<script>
+  let t = async_test("Things inside templates are not preloaded");
+  window.addEventListener("load", t.step_func(function() {
+    let script = document.createElement("script");
+    script.onload = t.step_func_done(function() {
+      let entries = performance.getEntriesByType('resource');
+      let found_outside_template = false;
+      let found_in_template = [];
+      for (let entry of entries) {
+        if (entry.name.includes("outside-template")) {
+          found_outside_template = true;
+        }
+        if (entry.name.includes("in-template")) {
+          found_in_template.push(entry.name);
+        }
+      }
+      assert_equals(found_in_template.length, 0, "Should not have preloaded stuff inside template element, got: " + found_in_template.join(", "));
+      assert_true(found_outside_template, "Should have loaded script outside template element");
+    });
+    // The test is a bit racy because it expects that the first load ends
+    // before this one. We try to make it the case via the tickle mechanism.
+    script.src = "resources/dummy.js?outside-template&pipe=trickle(d1)";
+    document.body.appendChild(script);
+  }));
+</script>
diff --git a/tests/wpt/web-platform-tests/loading/resources/dummy.js b/tests/wpt/web-platform-tests/loading/resources/dummy.js
new file mode 100644
index 00000000000..3cae1be79e4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/loading/resources/dummy.js
@@ -0,0 +1 @@
+/* Nothing to see here */
diff --git a/tests/wpt/web-platform-tests/longtask-timing/longtask-before-observer.window.js b/tests/wpt/web-platform-tests/longtask-timing/longtask-before-observer.window.js
new file mode 100644
index 00000000000..b7d4eb9d1de
--- /dev/null
+++ b/tests/wpt/web-platform-tests/longtask-timing/longtask-before-observer.window.js
@@ -0,0 +1,16 @@
+async_test(t => {
+  assert_implements(window.PerformanceLongTaskTiming, 'Longtasks are not supported.');
+  // Create a long task before any observer.
+  const begin = window.performance.now();
+  while (window.performance.now() < begin + 60);
+  // After a timeout, add an observer with buffered flag.
+  t.step_timeout(() => {
+    new PerformanceObserver(t.step_func_done(list => {
+      list.getEntries().forEach(entry => {
+        assert_equals(entry.entryType, 'longtask');
+        assert_equals(entry.name, 'self');
+        assert_greater_than(entry.duration, 50);
+      });
+    })).observe({type: 'longtask', buffered: true});
+  }, 0);
+}, 'PerformanceObserver with buffered flag can see previous longtask entries.');
diff --git a/tests/wpt/web-platform-tests/mathml/presentation-markup/operators/largeop-hit-testing.html b/tests/wpt/web-platform-tests/mathml/presentation-markup/operators/largeop-hit-testing.html
new file mode 100644
index 00000000000..4f6a7782f27
--- /dev/null
+++ b/tests/wpt/web-platform-tests/mathml/presentation-markup/operators/largeop-hit-testing.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Test hit testing on large operators</title>
+<meta name="assert" content="Verify that hit testing works on large operators.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/mathml/support/feature-detection.js"></script>
+<style>
+  @font-face {
+    font-family: TestFont;
+    src: url("/fonts/math/largeop-displayoperatorminheight5000.woff");
+  }
+  mo  {
+    font-family: TestFont;
+    font-size: 16px;
+  }
+</style>
+<script>
+  function getBox(aId) {
+    return document.getElementById(aId).getBoundingClientRect();
+  }
+
+  setup({ explicit_done: true });
+  window.addEventListener("load", () => { document.fonts.ready.then(runTests); });
+
+  function runTests() {
+
+    test(function() {
+      assert_true(MathMLFeatureDetection.has_operator_spacing());
+
+      let bbox = getBox("largeop");
+      let hit = document.getElementById("largeop");
+      let reference = getBox("reference");
+      assert_true(bbox.height > reference.height, "height of large op is bigger than the equivalent normal operator");
+      assert_equals(hit, document.elementFromPoint(bbox.left + 1, bbox.top + 1), "hit testing top-left corner of large op works");
+      assert_equals(hit, document.elementFromPoint(bbox.right - 1, bbox.bottom - 1), "hit testing bottom-right corner of large op works");
+    }, "Large op hit testing");
+
+    done();
+  }
+</script>
+</head>
+<body>
+  <math>
+    <mtable>
+      <mtr>
+        <mtd>
+          <mstyle displaystyle="false">
+            <mo id="reference">&#x2AFF;</mo>
+          </mstyle>
+        </mtd>
+        <mtd>
+          <mstyle displaystyle="true">
+            <mo id="largeop">&#x2AFF;</mo>
+          </mstyle>
+        </mtd>
+      </mtr>
+    </mtable>
+  </math>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/mathml/relations/css-styling/padding-border-margin/padding-border-margin-002-ref.html b/tests/wpt/web-platform-tests/mathml/relations/css-styling/padding-border-margin/padding-border-margin-002-ref.html
new file mode 100644
index 00000000000..e13a9f47ff4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/mathml/relations/css-styling/padding-border-margin/padding-border-margin-002-ref.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8"/>
+<title>Padding/border/margin on largeop (reference)</title>
+<body>
+  <p>This test passes if you see a cyan rectangle of width 300px and
+    height 1500px, surrounded by a 10px blue padding, surrounded by a 10px
+    blue/yellow dashed border, itself
+    surrounded by a 10px pink margin.</p>
+  </div>
+    <div style="background: pink; position: absolute; left: 10px; top: 4em;">
+      <div style="background: blue; border: 10px dashed yellow; padding: 10px; margin: 10px;">
+        <div style="width: 300px; height: 1500px; background: cyan;"></div>
+      </div>
+    </div>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/mathml/relations/css-styling/padding-border-margin/padding-border-margin-002.html b/tests/wpt/web-platform-tests/mathml/relations/css-styling/padding-border-margin/padding-border-margin-002.html
new file mode 100644
index 00000000000..1ccfbb7005f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/mathml/relations/css-styling/padding-border-margin/padding-border-margin-002.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8"/>
+<title>Padding/border/margin on largeop</title>
+<link rel="help" href="https://mathml-refresh.github.io/mathml-core/#layout-algorithms">
+<link rel="help" href="https://mathml-refresh.github.io/mathml-core/#the-math-style-property">
+<link rel="help" href="https://mathml-refresh.github.io/mathml-core/#layout-of-operators">
+<link rel="match" href="padding-border-margin-002-ref.html"/>
+<meta name="assert" content="Verify visual rendering of padding/border/margin on a displaystyle mo element with the largeop property.">
+<style>
+  @font-face {
+    font-family: TestFont;
+    src: url("/fonts/math/largeop-displayoperatorminheight5000.woff");
+  }
+  math  {
+    /* Largeop variant for U+2AFF has width 100px
+       and height 300 * 5000 / 1000 = 1500px */
+    font-family: TestFont;
+    font-size: 300px;
+  }
+</style>
+<body>
+  <p>This test passes if you see a cyan rectangle of width 300px and
+    height 1500px, surrounded by a 10px blue padding, surrounded by a 10px
+    blue/yellow dashed border, itself
+    surrounded by a 10px pink margin.</p>
+  <div style="background: pink; position: absolute; left: 10px; top: 4em;">
+    <math displaystyle="true">
+      <mo largeop="true" lspace="0" rspace="0" style="background: blue; border: 10px dashed yellow; padding: 10px; margin: 10px; color: cyan;">&#x2AFF;</mo>
+    </math>
+  </div>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/old-tests/submission/Microsoft/history/history_000.htm b/tests/wpt/web-platform-tests/old-tests/submission/Microsoft/history/history_000.htm
index d592f10dc2f..0e335c7deb1 100644
--- a/tests/wpt/web-platform-tests/old-tests/submission/Microsoft/history/history_000.htm
+++ b/tests/wpt/web-platform-tests/old-tests/submission/Microsoft/history/history_000.htm
@@ -72,20 +72,20 @@
                         //there should now be three extra
                         assert_equals(history.length, length+3, "Three additional travel entries add to history.length");
 
+                        let popstateCount = 0;
+                        onpopstate = t.step_func(function(e) {
+                          if (++popstateCount == 3) {
+                            onpopstate = null;
+                            //once the .back navigations have completed, push again and verify length is one more than starting value
+                            history.pushState(null, null);
+                            assert_equals(history.length, length+1, "History.length should now only be one more than original value");
+                            t.done();
+                          }
+                        });
                         //travel back to the entry that the test started on
                         history.back();
                         history.back();
                         history.back();
-
-                        //if the back navs are queued, queue verification task after them
-                        queue(
-                            t.step_func(function() {
-                                //once the .back navigations have completed, push again and verify length is one more than starting value
-                                history.pushState(null, null);
-                                assert_equals(history.length, length+1, "History.length should now only be one more than original value");
-                                t.done();
-                            })
-                        );
                     });
                 },
 
@@ -152,19 +152,20 @@
                         //there should now be three extra
                         assert_equals(history.length, length+3, "Three additional travel entries add to history.length");
 
+                        let popstateCount = 0;
+                        onpopstate = t.step_func(function(e) {
+                          if (++popstateCount == 2) {
+                            onpopstate = null;
+                            //once the .back navigations have fired, replace and verify the length has not changed since the last check
+                            history.replaceState(null, null);
+                            assert_equals(history.length, length+3, "History.length should still be three more than original value");
+                            t.done();
+                          }
+                        });
+
                         //travel back two entries to land in the middle
                         history.back();
                         history.back();
-
-                        //if the back navs are queued, queue verification task after them
-                        queue(
-                            t.step_func(function() {
-                                //once the .back navigations have fired, push again and verify length has not changed since the last check
-                                history.replaceState(null, null);
-                                assert_equals(history.length, length+3, "History.length should still be three more than original value");
-                                t.done();
-                            })
-                        );
                     });
                 },
 
@@ -227,22 +228,19 @@
 
                 function() {
                     var t = async_test("PopStateEvent fires on Forward navigation");
-                    t.step( function() {
-                    onpopstate = null;
-                    history.pushState(null, null);
-                    history.pushState(null, null);
-                    history.back();
-                    //if the back navigation is queued, set up the rest of the test after it is done
-                    queue(
-                        t.step_func(function() {
+                    t.step(function() {
+                        onpopstate = null;
+                        history.pushState(null, null);
+                        history.pushState(null, null);
+                        onpopstate = function(e) {
                             //prepare to end the test as soon as popstate fires
                             onpopstate = function(e) {
                                 t.done();
-                            }
+                            };
                             //go forward to fire the popstate event
                             history.forward();
-                        })
-                    );
+                        };
+                        history.back();
                     });
                 },
 
@@ -309,17 +307,13 @@
         //serves to make test execution sequential despite asynchronous behaviors
         function testFinished(test) {
             if(testIndex < testCollection.length - 1) {
-                //queue the function so that stack remains shallow
-                queue(testCollection[++testIndex]);
+                //Run the function asynchronously so that the stack remains shallow
+                setTimeout(testCollection[++testIndex]);
             } else {
                 //when the last test has run, explicitly end test suite
                 done();
             }
         }
-        function queue(func) {
-            //50 allows adequate time for .back and .forward navigations to queue first
-            setTimeout(func, 50);
-        }
 
         add_result_callback(testFinished);
 
@@ -332,7 +326,7 @@
           testframe2.removeEventListener('load', startTestsWhenIframesLoaded, false);
 
           //start the first test
-          queue(testCollection[testIndex]);
+          setTimeout(testCollection[testIndex]);
         }
 
         // add listeners to trigger the tests once the iframes are loaded,
diff --git a/tests/wpt/web-platform-tests/pointerevents/html/pointerevent_drag_interaction-manual.html b/tests/wpt/web-platform-tests/pointerevents/html/pointerevent_drag_interaction-manual.html
index b316ba917ec..1a80d239b89 100644
--- a/tests/wpt/web-platform-tests/pointerevents/html/pointerevent_drag_interaction-manual.html
+++ b/tests/wpt/web-platform-tests/pointerevents/html/pointerevent_drag_interaction-manual.html
@@ -8,16 +8,18 @@
         <!-- Additional helper script for common checks across event types -->
         <script type="text/javascript" src="../pointerevent_support.js"></script>
         <script>
-           var eventList = ['pointerdown', 'pointerup', 'pointercancel', 'gotpointercapture', 'lostpointercapture', 'dragstart'];
+           var eventList = ['pointerdown', 'pointerup', 'pointercancel', 'gotpointercapture', 'lostpointercapture', 'dragstart', 'mousedown'];
 
            PhaseEnum = {
               DndWithoutCapture:   0,
               DndWithCapture:      1,
-              DndPrevented:        2,
-              Done:                3,
+              DndWithCaptureMouse: 2,
+              DndPrevented:        3,
+              Done:                4,
             };
             var phase = PhaseEnum.DndWithoutCapture;
             var received_events = [];
+            var pointerId = -1;
 
             function resetTestState() {
                 phase = PhaseEnum.DndWithoutCapture;
@@ -31,9 +33,17 @@
 
                 function handleEvent(e) {
                     if (e.type == 'pointerdown') {
-                       received_events = [];
-                       if (phase == PhaseEnum.DndWithCapture)
-                          target0.setPointerCapture(e.pointerId);
+                        received_events = [];
+                        if (phase == PhaseEnum.DndWithCapture) {
+                            target0.setPointerCapture(e.pointerId);
+                        } else if (phase == PhaseEnum.DndWithCaptureMouse) {
+                            pointerId = e.pointerId;
+                        }
+                    }
+                    if (e.type == 'mousedown') {
+                        if (phase == PhaseEnum.DndWithCaptureMouse) {
+                            target0.setPointerCapture(pointerId);
+                        }
                     }
                     received_events.push(e.type + "@" + e.target.id);
                     if (e.type == 'dragstart') {
@@ -44,16 +54,21 @@
                     if (phase == PhaseEnum.DndWithoutCapture && e.type == 'pointercancel') {
                         phase++;
                         test(() => {
-                            assert_equals(received_events.join(', '), "pointerdown@target0, dragstart@target0, pointercancel@target0", "Pointercancel should be fired with the expected order when drag operation starts.");
+                            assert_equals(received_events.join(', '), "pointerdown@target0, mousedown@target0, dragstart@target0, pointercancel@target0", "Pointercancel should be fired with the expected order when drag operation starts.");
                         }, "Pointercancel when drag operation starts");
                     } else if (phase == PhaseEnum.DndWithCapture && e.type == 'lostpointercapture') {
                         test(() => {
-                            assert_equals(received_events.join(', '), "pointerdown@target0, gotpointercapture@target0, dragstart@target0, pointercancel@target0, lostpointercapture@target0", "Pointercancel and lostpointercapture should be fired with the expected order when drag operation starts.");
+                            assert_equals(received_events.join(', '), "pointerdown@target0, mousedown@target0, gotpointercapture@target0, dragstart@target0, pointercancel@target0, lostpointercapture@target0", "Pointercancel and lostpointercapture should be fired with the expected order when drag operation starts.");
                         }, "Pointercancel while capturing when drag operation starts");
                         phase++;
+                    } else if (phase == PhaseEnum.DndWithCaptureMouse && e.type == 'lostpointercapture') {
+                        test(() => {
+                            assert_equals(received_events.join(', '), "pointerdown@target0, mousedown@target0, gotpointercapture@target0, dragstart@target0, pointercancel@target0, lostpointercapture@target0", "Pointercancel and lostpointercapture should be fired with the expected order when drag operation starts.");
+                        }, "Pointercancel while capturing on mousedown when drag operation starts");
+                        phase++;
                     } else if (phase == PhaseEnum.DndPrevented && e.type == 'pointerup') {
                         test(() => {
-                            assert_equals(received_events.join(', '), "pointerdown@target0, dragstart@target0, pointerup@target1", "Pointerevent stream shouldn't get interrupted when drag is prevented.");
+                            assert_equals(received_events.join(', '), "pointerdown@target0, mousedown@target0, dragstart@target0, pointerup@target1", "Pointerevent stream shouldn't get interrupted when drag is prevented.");
                         }, "Pointerevent stream when drag is prevented.");
                         phase++;
                         test_pointerEvent.done();
@@ -76,6 +91,7 @@
                  <li>Move your pointer to purple square and release.</li>
                  <li>Repeat the first two steps.</li>
                  <li>Repeat the first two steps once again.</li>
+                 <li>Repeat the first two steps once again.</li>
             </ol>
             Test passes if the proper behavior of the events is observed.
         </h4>
diff --git a/tests/wpt/web-platform-tests/selection/select-internal.html b/tests/wpt/web-platform-tests/selection/select-internal.html
new file mode 100644
index 00000000000..305e26d4057
--- /dev/null
+++ b/tests/wpt/web-platform-tests/selection/select-internal.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Selecting internal node</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<link rel="stylesheet" href="/fonts/ahem.css">
+<style>
+  details {
+    font: 16px/1 Ahem;
+  }
+</style>
+<details id="details"></details>
+<script>
+promise_test(async () => {
+  await new test_driver.Actions()
+    .pointerMove(5, 5, {origin: details})
+    .pointerDown()
+    .pointerMove(50, 50)
+    .pointerUp()
+    .send();
+  const selection = getSelection();
+  // Gecko throws when accessing any property from DOM-invisible node
+  // so check we can access something
+  assert_equals(selection.anchorNode.constructor.name, "HTMLDetailsElement");
+  assert_equals(selection.anchorOffset, 0);
+  // Gecko limits the selection inside <details> while Blink does not
+  // so check something general
+  assert_equals(selection.focusNode.nodeType, Node.ELEMENT_NODE);
+  assert_equals(selection.focusOffset, 0);
+}, "Selecting the default summary of <details> should report a DOM-visible ancestor");
+</script>
diff --git a/tests/wpt/web-platform-tests/svg/historical.html b/tests/wpt/web-platform-tests/svg/historical.html
index 1b73ca8d223..23cc3fd1cc3 100644
--- a/tests/wpt/web-platform-tests/svg/historical.html
+++ b/tests/wpt/web-platform-tests/svg/historical.html
@@ -4,18 +4,35 @@
 <script src="/resources/testharnessreport.js"></script>
 <script>
 var removedInterfaces = [
+  "SVGAltGlyphElement",
+  "SVGAltGlyphDefElement",
+  "SVGAltGlyphItemElement",
   "SVGAnimatedPathData",
   "SVGColor",
+  "SVGColorProfileElement",
+  "SVGColorProfileRule",
+  "SVGCursorElement",
   "SVGDocument",
   "SVGElementInstanceList",
   "SVGExternalResourcesRequired",
+  "SVGFontElement",
+  "SVGFontFaceElement",
+  "SVGFontFaceSrcElement",
+  "SVGFontFaceUriElement",
+  "SVGFontFaceFormatElement",
+  "SVGGlyphElement",
+  "SVGGlyphRefElement",
+  "SVGHKernElement",
   "SVGICCColor",
   "SVGLangSpace",
   "SVGLocatable",
+  "SVGMissingGlyphElement",
   "SVGTransformable",
+  "SVGTRefElement",
   "SVGPaint",
   "SVGPathSeg",
   "SVGStylable",
+  "SVGVKernElement",
   "SVGViewSpec",
   "SVGZoomEvent"
 ]
diff --git a/tests/wpt/web-platform-tests/svg/idlharness.window.js b/tests/wpt/web-platform-tests/svg/idlharness.window.js
index 500f058259f..67cf8f37a58 100644
--- a/tests/wpt/web-platform-tests/svg/idlharness.window.js
+++ b/tests/wpt/web-platform-tests/svg/idlharness.window.js
@@ -28,14 +28,8 @@ const elements = [
   'polygon',
   'text',
   'tspan',
-  'tref',
   'textPath',
-  'altGlyph',
-  'altGlyphDef',
-  'altGlyphItem',
-  'glyphRef',
   'marker',
-  'colorProfile',
   'linearGradient',
   'radialGradient',
   'meshGradient',
@@ -43,7 +37,6 @@ const elements = [
   'pattern',
   'clipPath',
   'mask',
-  'cursor',
   'a',
   'view',
   'script',
@@ -53,16 +46,6 @@ const elements = [
   'mpath',
   'animateColor',
   'animateTransform',
-  'font',
-  'glyph',
-  'missingglyph',
-  'khern',
-  'vkern',
-  'fontface',
-  'fontfacesrc',
-  'fontfaceuri',
-  'fontfaceformat',
-  'fontfacename',
   'metadata',
   'foreignObject',
   'filter',
@@ -171,14 +154,8 @@ idl_test(
       SVGPolygonElement: ['objects.polygon'],
       SVGTextElement: ['objects.text'],
       SVGTSpanElement: ['objects.tspan'],
-      SVGTRefElement: ['objects.tref'],
       SVGTextPathElement: ['objects.textPath'],
-      SVGAltGlyphElement: ['objects.altGlyph'],
-      SVGAltGlyphDefElement: ['objects.altGlyphDef'],
-      SVGAltGlyphItemElement: ['objects.altGlyphItem'],
-      SVGGlyphRefElement: ['objects.glyphRef'],
       SVGMarkerElement: ['objects.marker'],
-      SVGColorProfileElement: ['objects.colorProfile'],
       SVGLinearGradientElement: ['objects.linearGradient'],
       SVGRadialGradientElement: ['objects.radialGradient'],
       SVGMeshGradientElement: ['objects.meshGradient'],
@@ -186,7 +163,6 @@ idl_test(
       SVGPatternElement: ['objects.pattern'],
       SVGClipPathElement: ['objects.clipPath'],
       SVGMaskElement: ['objects.mask'],
-      SVGCursorElement: ['objects.cursor'],
       SVGAElement: ['objects.a'],
       SVGViewElement: ['objects.view'],
       SVGScriptElement: ['objects.script'],
@@ -196,15 +172,6 @@ idl_test(
       SVGMPathElement: ['objects.mpath'],
       SVGAnimateColorElement: ['objects.animateColor'],
       SVGAnimateTransformElement: ['objects.animateTransform'],
-      SVGFontElement: ['objects.font'],
-      SVGGlyphElement: ['objects.glyph'],
-      SVGMissingGlyphElement: ['objects.missingglyph'],
-      SVGHKernElement: ['objects.hkern'],
-      SVGVKernElement: ['objects.vkern'],
-      SVGFontFaceElement: ['objects.fontface'],
-      SVGFontFaceSrcElement: ['objects.fontfacesrc'],
-      SVGFontFaceUriElement: ['objects.fontfaceuri'],
-      SVGFontFaceFormatElement: ['objects.fontfaceformat'],
       SVGMetadataElement: ['objects.metadata'],
       SVGForeignObjectElement: ['objects.foreignObject'],
       SVGFilterElement: ['objects.filter'],
diff --git a/tests/wpt/web-platform-tests/tools/ci/azure/safari-technology-preview.rb b/tests/wpt/web-platform-tests/tools/ci/azure/safari-technology-preview.rb
index 1a3620529c0..115dd1b8f21 100644
--- a/tests/wpt/web-platform-tests/tools/ci/azure/safari-technology-preview.rb
+++ b/tests/wpt/web-platform-tests/tools/ci/azure/safari-technology-preview.rb
@@ -1,10 +1,10 @@
 cask "safari-technology-preview" do
   if MacOS.version <= :catalina
-    version "114,001-54431-20201007-6899e5c7-457d-484b-bf38-fce2fcc967da"
-    sha256 "1803c0affc0e7b28d945e122e99ed5741c19b9f2a949b473133adf916023db5b"
+    version "115,001-62651-20201022-6cd92e18-bfbe-48cc-9385-d84da8f3c24c"
+    sha256 "e4b29ac2a0d60e48bae7d9c635853ff7dadc59a82dd53f340b623eeb5538f657"
   else
-    version "114,001-53239-20201007-7bed156d-ab68-4db2-8ff0-3fa2e23fa2c0"
-    sha256 "c93ff3b5d485fce80b86f9656ffba3f5b967b189776cd20aea16a4c681419414"
+    version "115,001-62679-20201022-42e0d63a-527a-45af-beb1-02cd4095e341"
+    sha256 "815276ca814e49a6b2e8eb8429d6e6644de2db89527fbbce83cb9d69f54783f7"
   end
 
   url "https://secure-appldnld.apple.com/STP/#{version.after_comma}/SafariTechnologyPreview.dmg"
diff --git a/tests/wpt/web-platform-tests/tools/wpt/testfiles.py b/tests/wpt/web-platform-tests/tools/wpt/testfiles.py
index 7f966a62526..4d10878d9d5 100644
--- a/tests/wpt/web-platform-tests/tools/wpt/testfiles.py
+++ b/tests/wpt/web-platform-tests/tools/wpt/testfiles.py
@@ -152,7 +152,7 @@ def repo_files_changed(revish, include_uncommitted=False, include_new=False):
         assert not entries[-1]
         entries = entries[:-1]
         for item in entries:
-            status, path = item.split()
+            status, path = item.split(" ", 1)
             if status == "??" and not include_new:
                 continue
             else:
diff --git a/tests/wpt/web-platform-tests/tools/wptserve/tests/functional/test_handlers.py b/tests/wpt/web-platform-tests/tools/wptserve/tests/functional/test_handlers.py
index 8c0e020f414..261bf3be2c2 100644
--- a/tests/wpt/web-platform-tests/tools/wptserve/tests/functional/test_handlers.py
+++ b/tests/wpt/web-platform-tests/tools/wptserve/tests/functional/test_handlers.py
@@ -195,7 +195,6 @@ class TestFunctionHandler(TestUsingServer):
         assert resp.read() == b""
 
 
-@pytest.mark.xfail((3,) <= sys.version_info < (3, 6), reason="wptserve only works on Py2")
 class TestJSONHandler(TestUsingServer):
     def test_json_0(self):
         @wptserve.handlers.json_handler
diff --git a/tests/wpt/web-platform-tests/tools/wptserve/tests/functional/test_pipes.py b/tests/wpt/web-platform-tests/tools/wptserve/tests/functional/test_pipes.py
index 0c487c57d4d..a00de71d796 100644
--- a/tests/wpt/web-platform-tests/tools/wptserve/tests/functional/test_pipes.py
+++ b/tests/wpt/web-platform-tests/tools/wptserve/tests/functional/test_pipes.py
@@ -3,6 +3,7 @@ import unittest
 import time
 import json
 
+from six import assertRegex
 from six.moves import urllib
 
 import pytest
@@ -43,11 +44,11 @@ class TestHeader(TestUsingServer):
         self.assertEqual(resp.info()["Refresh"], "3;url=http://example.com")
 
     def test_escape_comma(self):
-        resp = self.request("/document.txt", query="pipe=header(Expires,Thu\,%2014%20Aug%201986%2018:00:00%20GMT)")
+        resp = self.request("/document.txt", query=r"pipe=header(Expires,Thu\,%2014%20Aug%201986%2018:00:00%20GMT)")
         self.assertEqual(resp.info()["Expires"], "Thu, 14 Aug 1986 18:00:00 GMT")
 
     def test_escape_parenthesis(self):
-        resp = self.request("/document.txt", query="pipe=header(User-Agent,Mozilla/5.0%20(X11;%20Linux%20x86_64;%20rv:12.0\)")
+        resp = self.request("/document.txt", query=r"pipe=header(User-Agent,Mozilla/5.0%20(X11;%20Linux%20x86_64;%20rv:12.0\)")
         self.assertEqual(resp.info()["User-Agent"], "Mozilla/5.0 (X11; Linux x86_64; rv:12.0)")
 
 class TestSlice(TestUsingServer):
@@ -120,7 +121,7 @@ server: http://localhost:{0}""".format(self.server.port).encode("ascii")
 
     def test_sub_uuid(self):
         resp = self.request("/sub_uuid.sub.txt")
-        self.assertRegexpMatches(resp.read().rstrip(), b"Before [a-f0-9-]+ After")
+        assertRegex(self, resp.read().rstrip(), b"Before [a-f0-9-]+ After")
 
     def test_sub_var(self):
         resp = self.request("/sub_var.sub.txt")
diff --git a/tests/wpt/web-platform-tests/webaudio/idlharness.https.window.js b/tests/wpt/web-platform-tests/webaudio/idlharness.https.window.js
index c2bae345104..e941a75c267 100644
--- a/tests/wpt/web-platform-tests/webaudio/idlharness.https.window.js
+++ b/tests/wpt/web-platform-tests/webaudio/idlharness.https.window.js
@@ -11,8 +11,6 @@ idl_test(
   ['cssom', 'uievents', 'mediacapture-streams', 'html', 'dom'],
   async idl_array => {
     idl_array.add_untested_idls('interface SVGElement {};');
-    idl_array.add_untested_idls('interface WorkletGlobalScope {};');
-    idl_array.add_untested_idls('interface Worklet {};');
 
     idl_array.add_objects({
       BaseAudioContext: [],
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/mediaElementAudioSourceToScriptProcessorTest.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/mediaElementAudioSourceToScriptProcessorTest.html
index b1f18d397d4..6a1a894b121 100644
--- a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/mediaElementAudioSourceToScriptProcessorTest.html
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/mediaElementAudioSourceToScriptProcessorTest.html
@@ -8,7 +8,7 @@ array, and after the playback has stopped, the contents are compared
 to those of a loaded AudioBuffer with the same source.
 
 Somewhat similiar to a test from Mozilla:
-(http://dxr.mozilla.org/mozilla-central/source/content/media/webaudio/test/test_mediaElementAudioSourceNode.html?force=1)
+https://searchfox.org/mozilla-central/source/dom/media/webaudio/test/test_mediaElementAudioSourceNode.html
 -->
 
 <html class="a">
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/release_actions/release.py b/tests/wpt/web-platform-tests/webdriver/tests/release_actions/release.py
index 1f486f7759f..5df1ff4be90 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/release_actions/release.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/release_actions/release.py
@@ -20,4 +20,4 @@ def test_no_top_browsing_context(session, closed_window):
 
 def test_no_browsing_context(session, closed_frame):
     response = release_actions(session)
-    assert_success(response)
+    assert_error(response, "no such window")
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/switch_to_frame/switch.py b/tests/wpt/web-platform-tests/webdriver/tests/switch_to_frame/switch.py
index 705fa79a5de..33ea967f801 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/switch_to_frame/switch.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/switch_to_frame/switch.py
@@ -42,7 +42,16 @@ def test_null_response_value(session):
     0,
     {"element-6066-11e4-a52e-4f735466cecf": "foo"},
 ])
-def test_no_top_browsing_context(session, closed_window, id):
+def test_no_top_browsing_context(session, url, id):
+    session.window_handle = session.new_window()
+
+    session.url = url("/webdriver/tests/support/html/frames.html")
+
+    subframe = session.find.css("#sub-frame", all=False)
+    session.switch_frame(subframe)
+
+    session.window.close()
+
     response = switch_to_frame(session, id)
     assert_error(response, "no such window")
 
@@ -61,6 +70,11 @@ def test_no_browsing_context(session, closed_frame, id):
         assert_error(response, "no such window")
 
 
+def test_no_browsing_context_when_already_top_level(session, closed_window):
+    response = switch_to_frame(session, None)
+    assert_error(response, "no such window")
+
+
 @pytest.mark.parametrize("value", ["foo", True, [], {}])
 def test_frame_id_invalid_types(session, value):
     response = switch_to_frame(session, value)
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/switch_to_parent_frame/switch.py b/tests/wpt/web-platform-tests/webdriver/tests/switch_to_parent_frame/switch.py
index ef2da45f162..d23dc522a13 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/switch_to_parent_frame/switch.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/switch_to_parent_frame/switch.py
@@ -21,7 +21,16 @@ def test_null_response_value(session):
     assert value is None
 
 
-def test_no_top_browsing_context(session, closed_window):
+def test_no_top_browsing_context(session, url):
+    session.window_handle = session.new_window()
+
+    session.url = url("/webdriver/tests/support/html/frames.html")
+
+    subframe = session.find.css("#sub-frame", all=False)
+    session.switch_frame(subframe)
+
+    session.window.close()
+
     response = switch_to_parent_frame(session)
     assert_error(response, "no such window")
 
@@ -49,7 +58,12 @@ def test_no_browsing_context(session, closed_frame):
     session.find.css("#delete", all=False)
 
 
-def test_stale_element_from_iframe(session):
+def test_no_browsing_context_when_already_top_level(session, closed_window):
+    response = switch_to_parent_frame(session)
+    assert_error(response, "no such window")
+
+
+def test_switch_from_iframe(session):
     session.url = inline(iframe("<p>foo"))
     frame_element = session.find.css("iframe", all=False)
     session.switch_frame(frame_element)
@@ -63,5 +77,10 @@ def test_stale_element_from_iframe(session):
 
 
 def test_switch_from_top_level(session):
+    session.url = inline("<p>foo")
+    element = session.find.css("p", all=False)
+
     result = switch_to_parent_frame(session)
     assert_success(result)
+
+    assert element.text == "foo"
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceGatheringState.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceGatheringState.html
index e7d8f220e66..870e6ad72ec 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceGatheringState.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceGatheringState.html
@@ -101,6 +101,17 @@
     await new Promise(r => t.step_timeout(r, 500));
   }, 'setLocalDescription(reoffer) with no new transports should not cause iceGatheringState to change');
 
+  promise_test(async t => {
+    const pc1 = new RTCPeerConnection();
+    t.add_cleanup(() => pc1.close());
+
+    expectNoMoreGatheringStateChanges(t, pc1);
+
+    await pc1.setLocalDescription(await pc1.createOffer());
+
+    await new Promise(r => t.step_timeout(r, 500));
+  }, 'setLocalDescription() with no transports should not cause iceGatheringState to change');
+
   promise_test(async t => {
     const pc1 = new RTCPeerConnection();
     t.add_cleanup(() => pc1.close());