diff --git a/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini b/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
index 76b398963ae..dd4ffcf4345 100644
--- a/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
+++ b/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
@@ -1,5 +1,4 @@
 [url-in-tags-revoke.window.html]
-  expected: TIMEOUT
   [Fetching a blob URL immediately before revoking it works in an iframe.]
     expected: FAIL
 
@@ -15,6 +14,3 @@
   [Opening a blob URL in a new window by clicking an <a> tag works immediately before revoking the URL.]
     expected: FAIL
 
-  [Fetching a blob URL immediately before revoking it works in <script> tags.]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini b/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
index 947e223fb28..3a3d15b8406 100644
--- a/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
+++ b/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
@@ -14,6 +14,9 @@
   [Revoke blob URL after creating Request, will fetch]
     expected: FAIL
 
+  [Revoke blob URL after calling fetch, fetch should succeed]
+    expected: FAIL
+
 
 [url-with-fetch.any.html]
   [Untitled]
@@ -34,3 +37,6 @@
   [Revoke blob URL after creating Request, will fetch]
     expected: FAIL
 
+  [Revoke blob URL after calling fetch, fetch should succeed]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index f6ba7e87abc..508d1b952f8 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -54441,6 +54441,18 @@
      {}
     ]
    ],
+   "css/CSS2/linebox/baseline-block-with-overflow-001.html": [
+    [
+     "css/CSS2/linebox/baseline-block-with-overflow-001.html",
+     [
+      [
+       "/css/CSS2/linebox/baseline-block-with-overflow-001-ref.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/CSS2/linebox/border-padding-bleed-001.xht": [
     [
      "css/CSS2/linebox/border-padding-bleed-001.xht",
@@ -166279,6 +166291,18 @@
      {}
     ]
    ],
+   "css/css-values/vh-calc-support.html": [
+    [
+     "css/css-values/vh-calc-support.html",
+     [
+      [
+       "/css/css-values/reference/all-green.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-values/vh-em-inherit.html": [
     [
      "css/css-values/vh-em-inherit.html",
@@ -166387,6 +166411,30 @@
      {}
     ]
    ],
+   "css/css-values/vh-support.html": [
+    [
+     "css/css-values/vh-support.html",
+     [
+      [
+       "/css/css-values/reference/all-green.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
+   "css/css-values/vh-zero-support.html": [
+    [
+     "css/css-values/vh-zero-support.html",
+     [
+      [
+       "/css/css-values/reference/all-green.html",
+       "=="
+      ]
+     ],
+     {}
+    ]
+   ],
    "css/css-values/vh_not_refreshing_on_chrome.html": [
     [
      "css/css-values/vh_not_refreshing_on_chrome.html",
@@ -210722,7 +210770,7 @@
    "WebIDL/META.yml": [
     []
    ],
-   "WebIDL/ecmascript-binding/constructors-support.html": [
+   "WebIDL/ecmascript-binding/support/constructors-support.html": [
     []
    ],
    "WebIDL/invalid/idl/enum.widl": [
@@ -234122,6 +234170,9 @@
    "css/CSS2/linebox/anonymous-inline-inherit-001-ref.html": [
     []
    ],
+   "css/CSS2/linebox/baseline-block-with-overflow-001-ref.html": [
+    []
+   ],
    "css/CSS2/linebox/border-padding-bleed-001-ref.xht": [
     []
    ],
@@ -256802,15 +256853,6 @@
    "css/css-values/urls/support/empty-urls.css": [
     []
    ],
-   "css/css-values/vh-calc-support.html": [
-    []
-   ],
-   "css/css-values/vh-support.html": [
-    []
-   ],
-   "css/css-values/vh-zero-support.html": [
-    []
-   ],
    "css/css-variables/META.yml": [
     []
    ],
@@ -262925,7 +262967,7 @@
    "dom/ranges/Range-test-iframe.html": [
     []
    ],
-   "dom/traversal/traversal-support.js": [
+   "dom/traversal/support/assert-node.js": [
     []
    ],
    "dom/traversal/unfinished/001.xml": [
@@ -263966,9 +264008,6 @@
    "eventsource/README.md": [
     []
    ],
-   "eventsource/eventsource-onmessage-realm-support.htm": [
-    []
-   ],
    "eventsource/resources/accept.event_stream": [
     []
    ],
@@ -263981,6 +264020,9 @@
    "eventsource/resources/cors.py": [
     []
    ],
+   "eventsource/resources/eventsource-onmessage-realm.htm": [
+    []
+   ],
    "eventsource/resources/init.htm": [
     []
    ],
@@ -265355,9 +265397,6 @@
    "fullscreen/api/resources/report-fullscreen-enabled.html": [
     []
    ],
-   "fullscreen/rendering/fullscreen-pseudo-class-support.html": [
-    []
-   ],
    "fullscreen/trusted-click.js": [
     []
    ],
@@ -270521,7 +270560,7 @@
    "html/semantics/forms/form-submission-target/resources/reltester.js": [
     []
    ],
-   "html/semantics/forms/resetting-a-form/reset-form-event-realm-support.html": [
+   "html/semantics/forms/resetting-a-form/support/reset-form-event-realm.html": [
     []
    ],
    "html/semantics/forms/textfieldselection/original-id.json": [
@@ -271457,9 +271496,6 @@
    "html/syntax/parsing-html-fragments/the-input-byte-stream-038.html.headers": [
     []
    ],
-   "html/syntax/parsing/DOMContentLoaded-defer-support.js": [
-    []
-   ],
    "html/syntax/parsing/README": [
     []
    ],
@@ -271499,6 +271535,9 @@
    "html/syntax/parsing/named-character-references-data.js": [
     []
    ],
+   "html/syntax/parsing/support/DOMContentLoaded-defer.js": [
+    []
+   ],
    "html/syntax/parsing/template.js": [
     []
    ],
@@ -271514,7 +271553,7 @@
    "html/the-xhtml-syntax/parsing-xhtml-documents/data-xhtml-with-dtd-ref.html": [
     []
    ],
-   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-support.htm": [
+   "html/the-xhtml-syntax/parsing-xhtml-documents/support/xhtml-mathml-dtd-entity.htm": [
     []
    ],
    "html/tools/META.yml": [
@@ -272594,6 +272633,9 @@
    "interfaces/xhr.idl": [
     []
    ],
+   "interfaces/xslt.idl": [
+    []
+   ],
    "intersection-observer/META.yml": [
     []
    ],
@@ -284036,7 +284078,7 @@
    "touch-events/multi-touch-interactions.js": [
     []
    ],
-   "touch-events/touch-support.js": [
+   "touch-events/support/touch.js": [
     []
    ],
    "trusted-types/META.yml": [
@@ -287482,6 +287524,12 @@
    ],
    "xhr/xmlhttprequest-sync-not-hang-scriptloader-subframe.html": [
     []
+   ],
+   "xslt/META.yml": [
+    []
+   ],
+   "xslt/externalScript.js": [
+    []
    ]
   },
   "testharness": {
@@ -310000,6 +310048,12 @@
      {}
     ]
    ],
+   "css/css-box/parsing/clear-computed.html": [
+    [
+     "css/css-box/parsing/clear-computed.html",
+     {}
+    ]
+   ],
    "css/css-box/parsing/clear-invalid.html": [
     [
      "css/css-box/parsing/clear-invalid.html",
@@ -310012,6 +310066,12 @@
      {}
     ]
    ],
+   "css/css-box/parsing/float-computed.html": [
+    [
+     "css/css-box/parsing/float-computed.html",
+     {}
+    ]
+   ],
    "css/css-box/parsing/float-invalid.html": [
     [
      "css/css-box/parsing/float-invalid.html",
@@ -311316,6 +311376,12 @@
      {}
     ]
    ],
+   "css/css-flexbox/parsing/order-computed.html": [
+    [
+     "css/css-flexbox/parsing/order-computed.html",
+     {}
+    ]
+   ],
    "css/css-flexbox/parsing/order-invalid.html": [
     [
      "css/css-flexbox/parsing/order-invalid.html",
@@ -313942,6 +314008,42 @@
      {}
     ]
    ],
+   "css/css-inline/parsing/alignment-baseline-computed.html": [
+    [
+     "css/css-inline/parsing/alignment-baseline-computed.html",
+     {}
+    ]
+   ],
+   "css/css-inline/parsing/alignment-baseline-invalid.html": [
+    [
+     "css/css-inline/parsing/alignment-baseline-invalid.html",
+     {}
+    ]
+   ],
+   "css/css-inline/parsing/alignment-baseline-valid.html": [
+    [
+     "css/css-inline/parsing/alignment-baseline-valid.html",
+     {}
+    ]
+   ],
+   "css/css-inline/parsing/baseline-shift-computed.html": [
+    [
+     "css/css-inline/parsing/baseline-shift-computed.html",
+     {}
+    ]
+   ],
+   "css/css-inline/parsing/baseline-shift-invalid.html": [
+    [
+     "css/css-inline/parsing/baseline-shift-invalid.html",
+     {}
+    ]
+   ],
+   "css/css-inline/parsing/baseline-shift-valid.html": [
+    [
+     "css/css-inline/parsing/baseline-shift-valid.html",
+     {}
+    ]
+   ],
    "css/css-layout-api/at-supports-rule.https.html": [
     [
      "css/css-layout-api/at-supports-rule.https.html",
@@ -315922,6 +316024,12 @@
      {}
     ]
    ],
+   "css/css-scroll-anchoring/position-change-heuristic-display-none-change.html": [
+    [
+     "css/css-scroll-anchoring/position-change-heuristic-display-none-change.html",
+     {}
+    ]
+   ],
    "css/css-scroll-anchoring/position-change-heuristic-ib-split.html": [
     [
      "css/css-scroll-anchoring/position-change-heuristic-ib-split.html",
@@ -319576,6 +319684,12 @@
      {}
     ]
    ],
+   "css/css-transforms/parsing/transform-box-computed.html": [
+    [
+     "css/css-transforms/parsing/transform-box-computed.html",
+     {}
+    ]
+   ],
    "css/css-transforms/parsing/transform-box-invalid.html": [
     [
      "css/css-transforms/parsing/transform-box-invalid.html",
@@ -343277,6 +343391,12 @@
      }
     ]
    ],
+   "fullscreen/rendering/fullscreen-pseudo-class-support.html": [
+    [
+     "fullscreen/rendering/fullscreen-pseudo-class-support.html",
+     {}
+    ]
+   ],
    "gamepad/idlharness.window.js": [
     [
      "gamepad/idlharness.window.html",
@@ -404793,7 +404913,9 @@
    "webrtc/RTCPeerConnection-iceConnectionState.https.html": [
     [
      "webrtc/RTCPeerConnection-iceConnectionState.https.html",
-     {}
+     {
+      "timeout": "long"
+     }
     ]
    ],
    "webrtc/RTCPeerConnection-iceGatheringState.html": [
@@ -415064,6 +415186,29 @@
      "xhr/xmlhttprequest-unsent.htm",
      {}
     ]
+   ],
+   "xslt/idlharness.window.js": [
+    [
+     "xslt/idlharness.window.html",
+     {
+      "script_metadata": [
+       [
+        "script",
+        "/resources/WebIDLParser.js"
+       ],
+       [
+        "script",
+        "/resources/idlharness.js"
+       ]
+      ]
+     }
+    ]
+   ],
+   "xslt/transformToFragment.tentative.window.js": [
+    [
+     "xslt/transformToFragment.tentative.window.html",
+     {}
+    ]
    ]
   },
   "visual": {
@@ -442132,12 +442277,8 @@
    "e094624c679202bd7035ed1593d83b2686360347",
    "testharness"
   ],
-  "WebIDL/ecmascript-binding/constructors-support.html": [
-   "3b2616170b1d4f48f9dab114e4135222ed10a6ea",
-   "support"
-  ],
   "WebIDL/ecmascript-binding/constructors.html": [
-   "fe7f7a75d4fdb12663ebcf7f83eff241fc0f54bf",
+   "61993a6200ed56f3664ef72c74839b2d1feaa3b1",
    "testharness"
   ],
   "WebIDL/ecmascript-binding/default-iterator-object.html": [
@@ -442204,6 +442345,10 @@
    "4caa5563b56b55ffb01a81e63c69ac0f009bda77",
    "testharness"
   ],
+  "WebIDL/ecmascript-binding/support/constructors-support.html": [
+   "3b2616170b1d4f48f9dab114e4135222ed10a6ea",
+   "support"
+  ],
   "WebIDL/interfaces.html": [
    "2683aae9cb6c5f48083159b67d18c6dedb11b481",
    "testharness"
@@ -494504,6 +494649,14 @@
    "77904d80e459037e029467479db2c101f0d383b8",
    "reftest"
   ],
+  "css/CSS2/linebox/baseline-block-with-overflow-001-ref.html": [
+   "2897c95810d67fe3131c0122b57fa192b4db66e1",
+   "support"
+  ],
+  "css/CSS2/linebox/baseline-block-with-overflow-001.html": [
+   "b0ca8835349b81ae26e3cbbda09ef57a2a370922",
+   "reftest"
+  ],
   "css/CSS2/linebox/border-padding-bleed-001-ref.xht": [
    "10fe3e08b45a5722b27e2a16bf806b116958d9c2",
    "support"
@@ -535000,12 +535153,20 @@
    "5047b8b1df07cb1c774b5f579101d69b2482058a",
    "testharness"
   ],
+  "css/css-box/parsing/clear-computed.html": [
+   "9571cb7e402c4f6fb386ebb80418310d73778e30",
+   "testharness"
+  ],
   "css/css-box/parsing/clear-invalid.html": [
    "38d1821bc8189a5b42c4c0fa75b0195d69b5a91f",
    "testharness"
   ],
   "css/css-box/parsing/clear-valid.html": [
-   "b27350e1791adf0318c556b77c12386c328fef9a",
+   "fc1947f71df5931dd2a3f3e2f248d1224a4ed0bd",
+   "testharness"
+  ],
+  "css/css-box/parsing/float-computed.html": [
+   "9d680e16c6dff2c1494e179a8902e35a6a10af19",
    "testharness"
   ],
   "css/css-box/parsing/float-invalid.html": [
@@ -535013,7 +535174,7 @@
    "testharness"
   ],
   "css/css-box/parsing/float-valid.html": [
-   "a8fc605325ff0dcd027110aecd42bf35f90d316c",
+   "32cf7edefdc027a0711c9bb94cbda2274211edd9",
    "testharness"
   ],
   "css/css-box/parsing/height-invalid.html": [
@@ -542692,6 +542853,10 @@
    "a3a56cc2da080a9edffb711106beed031c0bb66f",
    "testharness"
   ],
+  "css/css-flexbox/parsing/order-computed.html": [
+   "95719961999aa98192eb00e266af5c021df11d81",
+   "testharness"
+  ],
   "css/css-flexbox/parsing/order-invalid.html": [
    "7a60396b681a5fa56c541439ea7882ff8a81e39a",
    "testharness"
@@ -554368,6 +554533,30 @@
    "cfc0fdd269fd334c8c76dfd357ff984df40e3064",
    "testharness"
   ],
+  "css/css-inline/parsing/alignment-baseline-computed.html": [
+   "83137f05645d72d6cb188ec6182e300f34dc1294",
+   "testharness"
+  ],
+  "css/css-inline/parsing/alignment-baseline-invalid.html": [
+   "62cb70f08106ebea78dfae49c53fa86cce5b3c54",
+   "testharness"
+  ],
+  "css/css-inline/parsing/alignment-baseline-valid.html": [
+   "3e895d7733890a5889dbbb327a9d21d3fdbdffa3",
+   "testharness"
+  ],
+  "css/css-inline/parsing/baseline-shift-computed.html": [
+   "3bef5bae3b95304812681dadf82b5d80ae06c6fd",
+   "testharness"
+  ],
+  "css/css-inline/parsing/baseline-shift-invalid.html": [
+   "1bc395c737f4dac0a6f1a1b8c60cd039193f2712",
+   "testharness"
+  ],
+  "css/css-inline/parsing/baseline-shift-valid.html": [
+   "8054ebbb39cfc654192aa97e928264d7859319db",
+   "testharness"
+  ],
   "css/css-layout-api/META.yml": [
    "c85c2d4ccc0b02f3e22ca444952fb7583d96e7c7",
    "support"
@@ -563268,6 +563457,10 @@
    "62b9761552442572aa6665009ff8b8751f8fdf85",
    "testharness"
   ],
+  "css/css-scroll-anchoring/position-change-heuristic-display-none-change.html": [
+   "6e002383822f5c8558950e413e099178cd1311e0",
+   "testharness"
+  ],
   "css/css-scroll-anchoring/position-change-heuristic-ib-split.html": [
    "e9033251128d28de58549810eeab6b26fb11bc08",
    "testharness"
@@ -574744,6 +574937,10 @@
    "2ae12222f1361b6b0016ce235fad92d03b3bff45",
    "testharness"
   ],
+  "css/css-transforms/parsing/transform-box-computed.html": [
+   "d21beb20813fa66f3a47f03633904d2319441fe6",
+   "testharness"
+  ],
   "css/css-transforms/parsing/transform-box-invalid.html": [
    "781601cd26aa43430272011d67447a9079015659",
    "testharness"
@@ -584506,7 +584703,7 @@
   ],
   "css/css-values/vh-calc-support.html": [
    "0e98941ab482144fc948417ab0c21797f97264e2",
-   "support"
+   "reftest"
   ],
   "css/css-values/vh-em-inherit.html": [
    "1affbd093d55d11528bace0155cb138d26a8b0b7",
@@ -584546,11 +584743,11 @@
   ],
   "css/css-values/vh-support.html": [
    "c65b5493feabb40950b8dab27d0f86ba48bd9bb6",
-   "support"
+   "reftest"
   ],
   "css/css-values/vh-zero-support.html": [
    "1c1bcd1761a2ffccfc1a92a10ddf860712606fa1",
-   "support"
+   "reftest"
   ],
   "css/css-values/vh_not_refreshing_on_chrome.html": [
    "e5606a0cb751554602c2d108840300973e92c734",
@@ -606853,7 +607050,7 @@
    "support"
   ],
   "docs/writing-tests/file-names.md": [
-   "5e9e407088eb941c12b03b69319e9fdb589978c2",
+   "220e4ab33dcfc5ed835d522ef5801f8f8f8504c5",
    "support"
   ],
   "docs/writing-tests/general-guidelines.md": [
@@ -608521,46 +608718,46 @@
    "testharness"
   ],
   "dom/traversal/TreeWalker-acceptNode-filter.html": [
-   "e2110aff3b3dec517f70866f908de2f919c089a4",
+   "5d521f016f494905d8b0893ccb37eba137ebf8c3",
    "testharness"
   ],
   "dom/traversal/TreeWalker-basic.html": [
-   "d1147637b139cdd8d215e51f2bc4a2d8cd1012f8",
+   "100cb10de3e91245647e848d83a311a4be9dcc43",
    "testharness"
   ],
   "dom/traversal/TreeWalker-currentNode.html": [
-   "8a09940b1e79a3b01b69532852c5c67a6a06d2f9",
+   "7c5d8810a86b8310499925f8d68ef4d6685e7e76",
    "testharness"
   ],
   "dom/traversal/TreeWalker-previousNodeLastChildReject.html": [
-   "236ab803c593651993586c641fd7653bc30e0bcf",
+   "0147b81112ef72279ca16cc5532fd89a5e2dca37",
    "testharness"
   ],
   "dom/traversal/TreeWalker-previousSiblingLastChildSkip.html": [
-   "17da4d56971b15b6eabbf0985bdaeb116d6bb2ac",
+   "5566564d2403a71dd6951094124657d39be4024a",
    "testharness"
   ],
   "dom/traversal/TreeWalker-traversal-reject.html": [
-   "273b33236f95dd2c8ce2913ccce0de65d71d0a36",
+   "53b734188c477b4be63cb2b667d13bf5a35252fa",
    "testharness"
   ],
   "dom/traversal/TreeWalker-traversal-skip-most.html": [
-   "567ef665569e54436a89a40021391a82342ea511",
+   "173922c15e6827a79adb4ecaf10ea548c4075c24",
    "testharness"
   ],
   "dom/traversal/TreeWalker-traversal-skip.html": [
-   "0e3b81a274f04160da0bfb5d7b758e01a818dd65",
+   "8c6f2bf22be0b31bba84b14f5b5518cbeac87855",
    "testharness"
   ],
   "dom/traversal/TreeWalker-walking-outside-a-tree.html": [
-   "ad4334512ce14dc0d65836f5b05294b72899c09a",
+   "b99e33e01faa6d4a9e6b1044ba0efb689c24e09b",
    "testharness"
   ],
   "dom/traversal/TreeWalker.html": [
    "2570c9a200682ff3844d116308da13c4bdbe5fff",
    "testharness"
   ],
-  "dom/traversal/traversal-support.js": [
+  "dom/traversal/support/assert-node.js": [
    "0d5d8ad74fce7dcd4d60a1a11525c5134407f8ba",
    "support"
   ],
@@ -611748,12 +611945,8 @@
    "6e600fc7b78deea6c027b1edd44b21e5255f7847",
    "testharness"
   ],
-  "eventsource/eventsource-onmessage-realm-support.htm": [
-   "63e6d012b4d82b03bca24ac2b98c01ce67a3a54f",
-   "support"
-  ],
   "eventsource/eventsource-onmessage-realm.htm": [
-   "9bc8c4646a4b7cc8810f5114f466b7c3fbd8f637",
+   "db2218b5168121c00d554d7bac314b783eb88b41",
    "testharness"
   ],
   "eventsource/eventsource-onmessage-trusted.htm": [
@@ -611912,6 +612105,10 @@
    "d01596c8366367b87e4fcfd971208c3e44604f31",
    "support"
   ],
+  "eventsource/resources/eventsource-onmessage-realm.htm": [
+   "63e6d012b4d82b03bca24ac2b98c01ce67a3a54f",
+   "support"
+  ],
   "eventsource/resources/init.htm": [
    "7c56d88800da948b76b5ce818c83f2e4217264a2",
    "support"
@@ -615290,7 +615487,7 @@
   ],
   "fullscreen/rendering/fullscreen-pseudo-class-support.html": [
    "ccd3f0e22be91def3e2117a567c4245a7fea5720",
-   "support"
+   "testharness"
   ],
   "fullscreen/rendering/fullscreen-root-block-scroll-manual.html": [
    "ae57d8a9f238c0b1014a256de7f0ea814120b06b",
@@ -629172,18 +629369,18 @@
    "6ce0040c4a2c52b0e681051449db9c49edbc53e6",
    "testharness"
   ],
-  "html/semantics/forms/resetting-a-form/reset-form-event-realm-support.html": [
-   "f55c651b5458def3d39cafe5fe312c0dc65892d9",
-   "support"
-  ],
   "html/semantics/forms/resetting-a-form/reset-form-event-realm.html": [
-   "ad2cda3ebbc8ec274e352f298ed000e28442a25b",
+   "6c125c46d06a59a3abccbed6d3101866c920f480",
    "testharness"
   ],
   "html/semantics/forms/resetting-a-form/reset-form.html": [
    "c7ac3e085b11601dbc741e0962d7c12e5aa0fd35",
    "testharness"
   ],
+  "html/semantics/forms/resetting-a-form/support/reset-form-event-realm.html": [
+   "f55c651b5458def3d39cafe5fe312c0dc65892d9",
+   "support"
+  ],
   "html/semantics/forms/textfieldselection/defaultSelection.html": [
    "be965bf5cf8eb5053a0650c96d28ed4571ac1495",
    "testharness"
@@ -633128,12 +633325,8 @@
    "156209f9c81ff73b6aaf1a0734ef770ddf0a8e3e",
    "support"
   ],
-  "html/syntax/parsing/DOMContentLoaded-defer-support.js": [
-   "35ce9327bfc3bea185a0717e2acbd82a4967680d",
-   "support"
-  ],
   "html/syntax/parsing/DOMContentLoaded-defer.html": [
-   "bf365c1a09255f6ceb1e3f1f639545518677d7ef",
+   "44946adf4e76d0b3512149626473c6737231e1f1",
    "testharness"
   ],
   "html/syntax/parsing/Document.getElementsByTagName-foreign-01.html": [
@@ -633464,6 +633657,10 @@
    "3d1eaf02a20c7dad80656f69adb26e24e1b1647f",
    "testharness"
   ],
+  "html/syntax/parsing/support/DOMContentLoaded-defer.js": [
+   "35ce9327bfc3bea185a0717e2acbd82a4967680d",
+   "support"
+  ],
   "html/syntax/parsing/template.js": [
    "b249fb64c71c16f1b6cefcc59668699f769a2341",
    "support"
@@ -633596,50 +633793,50 @@
    "fd29905ea30ed987c8d634c7f6df2e9e5e517e96",
    "reftest"
   ],
+  "html/the-xhtml-syntax/parsing-xhtml-documents/support/xhtml-mathml-dtd-entity.htm": [
+   "761655094599be5451e231b30c81241550bee3a5",
+   "support"
+  ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-1.htm": [
-   "4025e2a477fde1dbeb170e7248032e221efdb62f",
+   "a5d2015890c6e714c83aa10f557765108392bf04",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-10.htm": [
-   "698239e1f48460b0ea8cb6df60e00b983fcd97c7",
+   "a8ca0c2256891ae6cb0fcb8b13d603e453d552e9",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-2.htm": [
-   "9f511768a8f69f4d29484637d62d83b2519f585e",
+   "d3e942d5287b825b1e8fe6922cd1bbaf97d16ab7",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-3.htm": [
-   "a86c7a843ee11243ecf68b59559fbdeeccbdf6a2",
+   "b375d50a8d00e87aa3370d009d6c923d0eb52aae",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-4.htm": [
-   "53a68b455c89c2d8d61ccefa4919b0c550dad32c",
+   "dda2893d27a1c14e86011c01ae1474272acb269c",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-5.htm": [
-   "17773322e687ce209e80d8e567356b99802c786c",
+   "2fedc6be55bdd21d247a5671ac8c3bf2aaf8da66",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-6.htm": [
-   "b1589bbac728f0b951d29e8ff1ea5b0ccbc058a4",
+   "c7f7549ac4d475fc1afc3da4d1533dc6a6c994d3",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-7.htm": [
-   "dc821d85582962a2d17a751ce635940728c673cb",
+   "1e61c2fa6ba9500504ee0e7f972b5fede1b0dd2f",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-8.htm": [
-   "b16011c43bdfbc67817666053572301fdd994233",
+   "cf809063e69cb5ac2509bf8ab034a06a5956108e",
    "testharness"
   ],
   "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-9.htm": [
-   "ec4d200560b1410387807757e5e7f20c8106d963",
+   "8f71d48e8a5215eeb99341fa910d1c6e1f6dcab5",
    "testharness"
   ],
-  "html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-support.htm": [
-   "761655094599be5451e231b30c81241550bee3a5",
-   "support"
-  ],
   "html/tools/META.yml": [
    "0f0f7aa96a3d8d59be0a26eaf5c706ae82faf4e4",
    "support"
@@ -636592,6 +636789,10 @@
    "27660bfd573b6dbd38f7c52b514fab9f4bd52996",
    "support"
   ],
+  "interfaces/xslt.idl": [
+   "e97d8b000441bf7c700d377f20f74b44831cffa3",
+   "support"
+  ],
   "intersection-observer/META.yml": [
    "31dddab561edd292a18e5b2cd4fb313a96af65b9",
    "support"
@@ -650185,7 +650386,7 @@
    "testharness"
   ],
   "portals/portals-adopt-predecessor.html": [
-   "91c13277819e6b32c7962ac52638b18199ec1803",
+   "e75c3b59424c111b47b1f29e935b8c52d4a5a1d2",
    "testharness"
   ],
   "portals/portals-cross-origin-load.sub.html": [
@@ -650325,11 +650526,11 @@
    "support"
   ],
   "portals/resources/portals-adopt-predecessor-portal.html": [
-   "78c6af1268cb91e9f43cf3fb41586b94f0d44889",
+   "0cf07f3f41c18c3cbea61b1137c2e797ab262c77",
    "support"
   ],
   "portals/resources/portals-adopt-predecessor.html": [
-   "4bd01c338ed6fc2a7c85a17e7d869aa31635533b",
+   "66d47d12ac28f6d8c415bd7bad3faa3ab85cdbf2",
    "support"
   ],
   "portals/resources/portals-nested-portal.html": [
@@ -671021,7 +671222,7 @@
    "support"
   ],
   "tools/manifest/sourcefile.py": [
-   "a34153d1c721e105abbdc60f980741dcc57255fc",
+   "54cd3b744886f7d1dd13dcd89465c20770603c22",
    "support"
   ],
   "tools/manifest/tests/__init__.py": [
@@ -671041,7 +671242,7 @@
    "support"
   ],
   "tools/manifest/tests/test_sourcefile.py": [
-   "0483311e2d2cdb4d549547fec871bf25c3da68df",
+   "0a7a1ca0b41a9c1b95fcea30954ceff4bcc74ad8",
    "support"
   ],
   "tools/manifest/tests/test_utils.py": [
@@ -676577,7 +676778,7 @@
    "support"
   ],
   "touch-events/historical.html": [
-   "27cc88d8ce0f7889cb60b8d0b7ba9f759745637c",
+   "a6bd80e2bf541e7f19dcfe05bc2dad5fecb5ba9d",
    "testharness"
   ],
   "touch-events/idlharness.window.js": [
@@ -676600,6 +676801,10 @@
    "1b47a64c157ac64f5760ebc0ad2fd114773cdea3",
    "manual"
   ],
+  "touch-events/support/touch.js": [
+   "f4bc0467db8a215fa85fb7e1c483b3d99a458ef7",
+   "support"
+  ],
   "touch-events/touch-globaleventhandler-interface.html": [
    "cb640444fa0b752c90d10fc73d32892facfb7dcf",
    "testharness"
@@ -676608,12 +676813,8 @@
    "8d3e83f054ab8e7f904a529d60b7308b0f852084",
    "testharness"
   ],
-  "touch-events/touch-support.js": [
-   "f4bc0467db8a215fa85fb7e1c483b3d99a458ef7",
-   "support"
-  ],
   "touch-events/touch-touchevent-constructor.html": [
-   "15b2db735fd0d7a01d9e9bd3a1f3719f790d62e5",
+   "1b723b7bb3c5cebc0701e2393e334a1e99ce2ef3",
    "testharness"
   ],
   "trusted-types/DOMParser-parseFromString.tentative.html": [
@@ -680969,7 +681170,7 @@
    "support"
   ],
   "webdriver/tests/element_clear/clear.py": [
-   "a1017745f3d3999d42fda413324890132f4b04a8",
+   "cb34fedb4ef18d67b30a9ed7a5de1e2f86763521",
    "wdspec"
   ],
   "webdriver/tests/element_clear/user_prompts.py": [
@@ -681085,7 +681286,7 @@
    "wdspec"
   ],
   "webdriver/tests/execute_async_script/properties.py": [
-   "207daae12833beff5da158136225663e16cbc155",
+   "394ae3294cd31707dc523310a403996cd8021276",
    "wdspec"
   ],
   "webdriver/tests/execute_async_script/user_prompts.py": [
@@ -681117,7 +681318,7 @@
    "wdspec"
   ],
   "webdriver/tests/execute_script/properties.py": [
-   "92f4722fbf6caa01c8dc1977dfdfa6b6db0af468",
+   "2be4f1f3ccc9720b223dba4ffcb710cc590100d9",
    "wdspec"
   ],
   "webdriver/tests/execute_script/user_prompts.py": [
@@ -682585,7 +682786,7 @@
    "testharness"
   ],
   "webrtc/RTCPeerConnection-iceConnectionState.https.html": [
-   "385bb51719e6ee5049f700f783d0faa6753cdff7",
+   "282771153c4645994a661048d2829859c73d705f",
    "testharness"
   ],
   "webrtc/RTCPeerConnection-iceGatheringState.html": [
@@ -688729,11 +688930,11 @@
    "testharness"
   ],
   "workers/semantics/interface-objects/001.worker.js": [
-   "a2b09fd1a16994494d3b0764cb694933efcb0249",
+   "6d965b6ba33699b498e609f5bf718a67769d32a8",
    "testharness"
   ],
   "workers/semantics/interface-objects/002.worker.js": [
-   "27be44396f57837bd2950f0c5e231e6e5f1b288a",
+   "bbaf66d3383e0957c5ab12ca03688c507081d86d",
    "testharness"
   ],
   "workers/semantics/interface-objects/003.html": [
@@ -690951,6 +691152,22 @@
   "xhr/xmlhttprequest-unsent.htm": [
    "eb52d63eef971895f69f1b0151baa457250dd452",
    "testharness"
+  ],
+  "xslt/META.yml": [
+   "9c059d2e9117d82f20b8dffc29026eb4e2305ef5",
+   "support"
+  ],
+  "xslt/externalScript.js": [
+   "7a2bf3622554937bf483a3b3afa9f16187fdabf6",
+   "support"
+  ],
+  "xslt/idlharness.window.js": [
+   "51b0cd3dbac772f85d50debdf414a5726875b7d4",
+   "testharness"
+  ],
+  "xslt/transformToFragment.tentative.window.js": [
+   "7bb6a5685544bfea53613af5a539d870385e6df0",
+   "testharness"
   ]
  },
  "url_base": "/",
diff --git a/tests/wpt/metadata/css/CSS2/linebox/baseline-block-with-overflow-001.html.ini b/tests/wpt/metadata/css/CSS2/linebox/baseline-block-with-overflow-001.html.ini
new file mode 100644
index 00000000000..ddb64b71a5d
--- /dev/null
+++ b/tests/wpt/metadata/css/CSS2/linebox/baseline-block-with-overflow-001.html.ini
@@ -0,0 +1,2 @@
+[baseline-block-with-overflow-001.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-transforms/parsing/transform-box-computed.html.ini b/tests/wpt/metadata/css/css-transforms/parsing/transform-box-computed.html.ini
new file mode 100644
index 00000000000..3cb6576be8c
--- /dev/null
+++ b/tests/wpt/metadata/css/css-transforms/parsing/transform-box-computed.html.ini
@@ -0,0 +1,16 @@
+[transform-box-computed.html]
+  [Property transform-box value 'content-box' computes to 'content-box']
+    expected: FAIL
+
+  [Property transform-box value 'view-box' computes to 'view-box']
+    expected: FAIL
+
+  [Property transform-box value 'border-box' computes to 'border-box']
+    expected: FAIL
+
+  [Property transform-box value 'stroke-box' computes to 'stroke-box']
+    expected: FAIL
+
+  [Property transform-box value 'fill-box' computes to 'fill-box']
+    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 34c0268d7f4..486ddb7c53b 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -318,21 +318,21 @@
   [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/plain */*]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;" text/plain]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html */*]
     expected: FAIL
 
   [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
+  [<iframe>: combined 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;" \\" text/plain]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/fetch/content-type/script.window.js.ini b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
index d2df9b78483..70333172a2c 100644
--- a/tests/wpt/metadata/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
@@ -56,3 +56,12 @@
   [separate text/javascript x/x]
     expected: FAIL
 
+  [separate text/javascript;charset=windows-1252 error text/javascript]
+    expected: FAIL
+
+  [separate text/javascript error]
+    expected: FAIL
+
+  [separate text/javascript ]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index 87c807a49ff..a63e414f43a 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,3 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%0C]
     expected: FAIL
 
+  [X-Content-Type-Options%3A%20%40%23%24%23%25%25%26%5E%26%5E*()()11!%2Cnosniff]
+    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_3.html.ini
similarity index 71%
rename from tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
rename to tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_3.html.ini
index 385376c7321..51f8272a6de 100644
--- 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_3.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_4.html]
+[traverse_the_history_3.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
deleted file mode 100644
index dc2e45516de..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_5.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
new file mode 100644
index 00000000000..8cc42056d34
--- /dev/null
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
@@ -0,0 +1,10 @@
+[non-active-document.html]
+  [DOMParser]
+    expected: FAIL
+
+  [createHTMLDocument]
+    expected: FAIL
+
+  [<template>]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/semantics/interactive-elements/the-details-element/toggleEvent.html.ini b/tests/wpt/metadata/html/semantics/interactive-elements/the-details-element/toggleEvent.html.ini
new file mode 100644
index 00000000000..9e522297c94
--- /dev/null
+++ b/tests/wpt/metadata/html/semantics/interactive-elements/the-details-element/toggleEvent.html.ini
@@ -0,0 +1,7 @@
+[toggleEvent.html]
+  [Calling open twice on 'details' fires only one toggle event]
+    expected: FAIL
+
+  [Setting open=true to opened 'details' element should not fire a toggle event at the 'details' element]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/resource-timing/resource_TAO_origin.htm.ini b/tests/wpt/metadata/resource-timing/resource_TAO_origin.htm.ini
index 29a30ecee0e..d9f5956bc52 100644
--- a/tests/wpt/metadata/resource-timing/resource_TAO_origin.htm.ini
+++ b/tests/wpt/metadata/resource-timing/resource_TAO_origin.htm.ini
@@ -14,3 +14,6 @@
   [The iframe should have one resource timing entry.]
     expected: FAIL
 
+  [responseEnd should not be 0 in timing-allow cross-origin request.]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/resource-timing/resource_TAO_zero.htm.ini b/tests/wpt/metadata/resource-timing/resource_TAO_zero.htm.ini
index 091a2791657..841d4050464 100644
--- a/tests/wpt/metadata/resource-timing/resource_TAO_zero.htm.ini
+++ b/tests/wpt/metadata/resource-timing/resource_TAO_zero.htm.ini
@@ -23,3 +23,6 @@
   [domainLookupStart should be 0 in cross-origin request.]
     expected: FAIL
 
+  [responseEnd should be greater than 0 in cross-origin request.]
+    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 f5a0c591723..a39775bfccd 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
@@ -101,3 +101,6 @@
   [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[30\]\t9.4836157560348511e-1\t9.5236867666244507e-1\t4.0071010589599609e-3\t4.2075103446311962e-3\t3.8985999999999999e-3\n\t[31\]\t9.2646563053131104e-1\t9.3139332532882690e-1\t4.9276947975158691e-3\t5.2906700783754857e-3\t3.8985999999999999e-3\n\t[32\]\t9.0087991952896118e-1\t9.0675884485244751e-1\t5.8789253234863281e-3\t6.4834496590358351e-3\t3.8985999999999999e-3\n\t[33\]\t8.7170630693435669e-1\t8.7856203317642212e-1\t6.8557262420654297e-3\t7.8033490899654511e-3\t3.8985999999999999e-3\n\t[34\]\t8.3906102180480957e-1\t8.4691369533538818e-1\t7.8526735305786133e-3\t9.2721059699818163e-3\t3.8985999999999999e-3\n\t...and 31037 more errors.\n\tMax AbsError of 4.1812150182355488e+30 at index of 20238.\n\t[20238\]\t4.1812150182355488e+30\t-4.7574958205223083e-1\t4.1812150182355488e+30\t8.7886887891716700e+30\t3.8985999999999999e-3\n\tMax RelError of 8.7886887891716700e+30 at index of 20238.\n\t[20238\]\t4.1812150182355488e+30\t-4.7574958205223083e-1\t4.1812150182355488e+30\t8.7886887891716700e+30\t3.8985999999999999e-3\n]
     expected: FAIL
 
+  [X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[30\]\t9.4836157560348511e-1\t9.5236867666244507e-1\t4.0071010589599609e-3\t4.2075103446311962e-3\t3.8985999999999999e-3\n\t[31\]\t9.2646563053131104e-1\t9.3139332532882690e-1\t4.9276947975158691e-3\t5.2906700783754857e-3\t3.8985999999999999e-3\n\t[32\]\t9.0087991952896118e-1\t9.0675884485244751e-1\t5.8789253234863281e-3\t6.4834496590358351e-3\t3.8985999999999999e-3\n\t[33\]\t8.7170630693435669e-1\t8.7856203317642212e-1\t6.8557262420654297e-3\t7.8033490899654511e-3\t3.8985999999999999e-3\n\t[34\]\t8.3906102180480957e-1\t8.4691369533538818e-1\t7.8526735305786133e-3\t9.2721059699818163e-3\t3.8985999999999999e-3\n\t...and 31037 more errors.\n\tMax AbsError of 9.8276454210281372e-1 at index of 39267.\n\t[39267\]\t2.5962776047338700e-21\t-9.8276454210281372e-1\t9.8276454210281372e-1\t1.0000000000000000e+0\t3.8985999999999999e-3\n\tMax RelError of 3.3137802965303198e+0 at index of 1253.\n\t[1253\]\t-4.3022233992815018e-2\t-9.9732093513011932e-3\t3.3049024641513824e-2\t3.3137802965303198e+0\t3.8985999999999999e-3\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/workers/baseurl/alpha/import-in-moduleworker.html.ini b/tests/wpt/metadata/workers/baseurl/alpha/import-in-moduleworker.html.ini
index bfd4d6dd2d6..bf2a1d61bab 100644
--- a/tests/wpt/metadata/workers/baseurl/alpha/import-in-moduleworker.html.ini
+++ b/tests/wpt/metadata/workers/baseurl/alpha/import-in-moduleworker.html.ini
@@ -1,5 +1,4 @@
 [import-in-moduleworker.html]
-  expected: ERROR
   [Base URL in module dedicated workers: import]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/workers/semantics/interface-objects/001.worker.js.ini b/tests/wpt/metadata/workers/semantics/interface-objects/001.worker.js.ini
index 93c90041ccf..8e9a35c833d 100644
--- a/tests/wpt/metadata/workers/semantics/interface-objects/001.worker.js.ini
+++ b/tests/wpt/metadata/workers/semantics/interface-objects/001.worker.js.ini
@@ -65,3 +65,7 @@
 
   [The IDBTransaction interface object should be exposed.]
     expected: FAIL
+
+  [The TextMetrics interface object should be exposed.]
+    expected: FAIL
+
diff --git a/tests/wpt/mozilla/meta/css/iframe/stacking_context_position_a.html.ini b/tests/wpt/mozilla/meta/css/iframe/stacking_context_position_a.html.ini
deleted file mode 100644
index 7924c2518a6..00000000000
--- a/tests/wpt/mozilla/meta/css/iframe/stacking_context_position_a.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[stacking_context_position_a.html]
-  expected: FAIL
diff --git a/tests/wpt/web-platform-tests/WebIDL/ecmascript-binding/constructors.html b/tests/wpt/web-platform-tests/WebIDL/ecmascript-binding/constructors.html
index fe7f7a75d4f..61993a6200e 100644
--- a/tests/wpt/web-platform-tests/WebIDL/ecmascript-binding/constructors.html
+++ b/tests/wpt/web-platform-tests/WebIDL/ecmascript-binding/constructors.html
@@ -126,7 +126,7 @@ async_test(function() {
       assert_equals(object_realm(dp), "child window");
     }, "Constructor in child window with bad NewTarget from child window that's a proxy for a parent window function");
   });
-  iframe.src = "constructors-support.html";
+  iframe.src = "support/constructors-support.html";
   document.body.appendChild(iframe);
 });
 </script>
diff --git a/tests/wpt/web-platform-tests/WebIDL/ecmascript-binding/constructors-support.html b/tests/wpt/web-platform-tests/WebIDL/ecmascript-binding/support/constructors-support.html
similarity index 100%
rename from tests/wpt/web-platform-tests/WebIDL/ecmascript-binding/constructors-support.html
rename to tests/wpt/web-platform-tests/WebIDL/ecmascript-binding/support/constructors-support.html
diff --git a/tests/wpt/web-platform-tests/css/CSS2/linebox/baseline-block-with-overflow-001-ref.html b/tests/wpt/web-platform-tests/css/CSS2/linebox/baseline-block-with-overflow-001-ref.html
new file mode 100644
index 00000000000..2897c95810d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/CSS2/linebox/baseline-block-with-overflow-001-ref.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<style>
+section {
+  margin-bottom: 1px;
+}
+.outer {
+  display: inline-block;
+  background: orange;
+  padding-bottom: 20px;
+}
+.inner {
+  width: 30px;
+  height: 30px;
+  overflow: hidden;
+  background: blue;
+}
+.inline-block {
+  display: inline-block;
+}
+.margin-bottom {
+  margin-bottom: 30px;
+}
+</style>
+<body>
+  <section>
+    <div class="outer">
+      <div class="inner inline-block">
+      </div>
+    </div>
+    XX
+  </section>
+  <section>
+    <div class="outer" style="height: 30px">
+      <div class="inner inline-block">
+      </div>
+    </div>
+    XX
+  </section>
+  <section>
+    <div class="outer" style="height: 30px">
+      <div class="inner inline-block">
+        XX
+      </div>
+    </div>
+    XX
+  </section>
+  <section>
+    <div class="outer">
+      <div class="inner margin-bottom inline-block">
+        XX
+      </div>
+    </div>
+    XX
+  </section>
+  <section class="margin-bottom">
+    <div class="outer" style="height: 60px">
+      <div class="inner margin-bottom inline-block">
+        XX
+      </div>
+    </div>
+    XX
+  </section>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/CSS2/linebox/baseline-block-with-overflow-001.html b/tests/wpt/web-platform-tests/css/CSS2/linebox/baseline-block-with-overflow-001.html
new file mode 100644
index 00000000000..b0ca8835349
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/CSS2/linebox/baseline-block-with-overflow-001.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<title>CSS Test: Baseline of blocks with `overflow: hidden`</title>
+<link rel="match" href="baseline-block-with-overflow-001-ref.html">
+<link rel="help" href="https://drafts.csswg.org/css2/visudet.html#propdef-vertical-align">
+<link rel="author" title="Koji Ishii" href="mailto:kojii@chromium.org">
+<style>
+section {
+  margin-bottom: 1px;
+}
+.outer {
+  display: inline-block;
+  background: orange;
+  padding-bottom: 20px;
+}
+.inner {
+  width: 30px;
+  height: 30px;
+  overflow: hidden;
+  background: blue;
+}
+.inline-block {
+  display: inline-block;
+}
+.margin-bottom {
+  margin-bottom: 30px;
+}
+</style>
+<body>
+  <section>
+    <div class="outer">
+      <div class="inner inline-block">
+      </div>
+    </div>
+    XX
+  </section>
+  <section>
+    <div class="outer">
+      <div class="inner">
+      </div>
+    </div>
+    XX
+  </section>
+  <section>
+    <div class="outer">
+      <div class="inner">
+        XX
+      </div>
+    </div>
+    XX
+  </section>
+  <section>
+    <div class="outer">
+      <div class="inner margin-bottom inline-block">
+        XX
+      </div>
+    </div>
+    XX
+  </section>
+  <section class="margin-bottom">
+    <div class="outer">
+      <div class="inner margin-bottom">
+        XX
+      </div>
+    </div>
+    XX
+  </section>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-box/parsing/clear-computed.html b/tests/wpt/web-platform-tests/css/css-box/parsing/clear-computed.html
new file mode 100644
index 00000000000..9571cb7e402
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-box/parsing/clear-computed.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS basic box model: getComputedStyle().clear</title>
+<link rel="help" href="https://drafts.csswg.org/css-box-3/#propdef-clear">
+<link rel="help" href="https://drafts.csswg.org/css-logical/#float-clear">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("clear", "none");
+test_computed_value("clear", "left");
+test_computed_value("clear", "right");
+test_computed_value("clear", "both");
+
+test_computed_value("clear", "inline-start");
+test_computed_value("clear", "inline-end");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-box/parsing/clear-valid.html b/tests/wpt/web-platform-tests/css/css-box/parsing/clear-valid.html
index b27350e1791..fc1947f71df 100644
--- a/tests/wpt/web-platform-tests/css/css-box/parsing/clear-valid.html
+++ b/tests/wpt/web-platform-tests/css/css-box/parsing/clear-valid.html
@@ -5,7 +5,9 @@
 <title>CSS basic box model: parsing clear with valid values</title>
 <link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-box-3/#propdef-clear">
+<link rel="help" href="https://drafts.csswg.org/css-logical/#float-clear">
 <meta name="assert" content="clear supports the full grammar 'none | left | right | both'.">
+<meta name="assert" content="clear also supports inline-start and inline-end.">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/css/support/parsing-testcommon.js"></script>
@@ -16,6 +18,9 @@ test_valid_value("clear", "none");
 test_valid_value("clear", "left");
 test_valid_value("clear", "right");
 test_valid_value("clear", "both");
+
+test_valid_value("clear", "inline-start");
+test_valid_value("clear", "inline-end");
 </script>
 </body>
 </html>
diff --git a/tests/wpt/web-platform-tests/css/css-box/parsing/float-computed.html b/tests/wpt/web-platform-tests/css/css-box/parsing/float-computed.html
new file mode 100644
index 00000000000..9d680e16c6d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-box/parsing/float-computed.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS basic box model: getComputedStyle().float</title>
+<link rel="help" href="https://drafts.csswg.org/css-box-3/#propdef-float">
+<link rel="help" href="https://drafts.csswg.org/css-logical/#float-clear">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("float", "none");
+test_computed_value("float", "left");
+test_computed_value("float", "right");
+
+test_computed_value("float", "inline-start");
+test_computed_value("float", "inline-end");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-box/parsing/float-valid.html b/tests/wpt/web-platform-tests/css/css-box/parsing/float-valid.html
index a8fc605325f..32cf7edefdc 100644
--- a/tests/wpt/web-platform-tests/css/css-box/parsing/float-valid.html
+++ b/tests/wpt/web-platform-tests/css/css-box/parsing/float-valid.html
@@ -5,7 +5,9 @@
 <title>CSS basic box model: parsing float with valid values</title>
 <link rel="author" title="Eric Willigers" href="mailto:ericwilligers@chromium.org">
 <link rel="help" href="https://drafts.csswg.org/css-box-3/#propdef-float">
+<link rel="help" href="https://drafts.csswg.org/css-logical/#float-clear">
 <meta name="assert" content="float supports the full grammar 'left | right | top | bottom | start | end | none | <page-floats>'.">
+<meta name="assert" content="float supports 'inline-start | inline-end'.">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <script src="/css/support/parsing-testcommon.js"></script>
@@ -16,6 +18,9 @@ test_valid_value("float", "left");
 test_valid_value("float", "right");
 test_valid_value("float", "none");
 
+test_valid_value("float", "inline-start");
+test_valid_value("float", "inline-end");
+
 // The following are not yet supported by browsers:
 // test_valid_value("float", "top");
 // test_valid_value("float", "bottom");
diff --git a/tests/wpt/web-platform-tests/css/css-flexbox/parsing/order-computed.html b/tests/wpt/web-platform-tests/css/css-flexbox/parsing/order-computed.html
new file mode 100644
index 00000000000..95719961999
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-flexbox/parsing/order-computed.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Flexible Box Layout Module Level 1: getComputedStyle().order</title>
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#propdef-order">
+<meta name="assert" content="order computed value is the specified integer.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("order", "0");
+test_computed_value("order", "123");
+test_computed_value("order", "-45");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-computed.html b/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-computed.html
new file mode 100644
index 00000000000..83137f05645
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-computed.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Inline Layout: getComputedStyle().alignmentBaseline</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#alignment-baseline-property">
+<link rel="help" href="https://www.w3.org/TR/SVG11/text.html#AlignmentBaselineProperty">
+<meta name="assert" content="alignment-baseline computed value is as specified.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("alignment-baseline", "baseline");
+test_computed_value("alignment-baseline", "text-bottom");
+test_computed_value("alignment-baseline", "alphabetic");
+test_computed_value("alignment-baseline", "ideographic");
+test_computed_value("alignment-baseline", "middle");
+test_computed_value("alignment-baseline", "central");
+test_computed_value("alignment-baseline", "mathematical");
+test_computed_value("alignment-baseline", "text-top");
+test_computed_value("alignment-baseline", "bottom");
+test_computed_value("alignment-baseline", "center");
+test_computed_value("alignment-baseline", "top");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-invalid.html b/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-invalid.html
new file mode 100644
index 00000000000..62cb70f0810
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-invalid.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Inline Layout: parsing alignment-baseline with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#alignment-baseline-property">
+<meta name="assert" content="alignment-baseline supports only the grammar 'baseline | text-bottom | alphabetic | ideographic | middle | central | mathematical | text-top | bottom | center | top'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// alignment-baseline 'auto' was valid in SVG 1.1
+// https://www.w3.org/TR/SVG11/text.html#AlignmentBaselineProperty
+test_invalid_value("alignment-baseline", "auto");
+
+test_invalid_value("alignment-baseline", "none");
+test_invalid_value("alignment-baseline", "baseline text-bottom");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-valid.html b/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-valid.html
new file mode 100644
index 00000000000..3e895d77338
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-inline/parsing/alignment-baseline-valid.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Inline Layout: parsing alignment-baseline with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#alignment-baseline-property">
+<meta name="assert" content="alignment-baseline supports the full grammar 'baseline | text-bottom | alphabetic | ideographic | middle | central | mathematical | text-top | bottom | center | top'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("alignment-baseline", "baseline");
+test_valid_value("alignment-baseline", "text-bottom");
+test_valid_value("alignment-baseline", "alphabetic");
+test_valid_value("alignment-baseline", "ideographic");
+test_valid_value("alignment-baseline", "middle");
+test_valid_value("alignment-baseline", "central");
+test_valid_value("alignment-baseline", "mathematical");
+test_valid_value("alignment-baseline", "text-top");
+test_valid_value("alignment-baseline", "bottom");
+test_valid_value("alignment-baseline", "center");
+test_valid_value("alignment-baseline", "top");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-computed.html b/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-computed.html
new file mode 100644
index 00000000000..3bef5bae3b9
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-computed.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Inline Layout: getComputedStyle().baselineShift</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#baseline-shift-property">
+<meta name="assert" content="baseline-shift computed value is the specified keyword or a computed length-percentage value.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<style>
+  #target {
+    font-size: 40px;
+  }
+</style>
+</head>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("baseline-shift", "-10px");
+test_computed_value("baseline-shift", "20%");
+test_computed_value("baseline-shift", "calc(10px - 0.5em)", "-10px");
+
+test_computed_value("baseline-shift", "sub");
+test_computed_value("baseline-shift", "super");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-invalid.html b/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-invalid.html
new file mode 100644
index 00000000000..1bc395c737f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-invalid.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Inline Layout: parsing baseline-shift with invalid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#baseline-shift-property">
+<meta name="assert" content="baseline-shift supports only the grammar 'length-percentage | sub | super'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+// Valid in SVG 1.1. Accepted by Blink and WebKit.
+// https://github.com/w3c/csswg-drafts/issues/3975
+test_invalid_value("baseline-shift", "5");
+
+test_invalid_value("baseline-shift", "-10px 20%");
+test_invalid_value("baseline-shift", "calc(2em + 3ex), 0");
+test_invalid_value("baseline-shift", "sub super");
+test_invalid_value("baseline-shift", "20px sub");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-valid.html b/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-valid.html
new file mode 100644
index 00000000000..8054ebbb39c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-inline/parsing/baseline-shift-valid.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Inline Layout: parsing baseline-shift with valid values</title>
+<link rel="help" href="https://drafts.csswg.org/css-inline-3/#baseline-shift-property">
+<meta name="assert" content="baseline-shift supports the full grammar 'length-percentage | sub | super'.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+</head>
+<body>
+<script>
+test_valid_value("baseline-shift", "-10px");
+test_valid_value("baseline-shift", "20%");
+test_valid_value("baseline-shift", "calc(2em + 3ex)");
+test_valid_value("baseline-shift", "0", "0px");
+test_valid_value("baseline-shift", "sub");
+test_valid_value("baseline-shift", "super");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-scroll-anchoring/position-change-heuristic-display-none-change.html b/tests/wpt/web-platform-tests/css/css-scroll-anchoring/position-change-heuristic-display-none-change.html
new file mode 100644
index 00000000000..6e002383822
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-scroll-anchoring/position-change-heuristic-display-none-change.html
@@ -0,0 +1,72 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="author" title="Mozilla" href="https://mozilla.org">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1543599">
+<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/#suppression-triggers">
+<style>
+#hidden {
+  display: none;
+  background: red;
+}
+#spacer {
+  height: calc(100vh + 200px); /* At least 200px of scroll range */
+}
+</style>
+<table>
+  <thead>
+    <tr>
+      <th>1
+      <th>1
+      <th>1
+      <th>1
+    </tr>
+  </thead>
+  <thead id="hidden">
+    <tr>
+      <th>1
+      <th>1
+      <th>1
+      <th>1
+    </tr>
+  </thead>
+  <tbody>
+    <tr><td>0 <td>0 <td>0 <td>0 </tr>
+    <tr><td>0 <td>0 <td>0 <td>0 </tr>
+    <tr><td>0 <td>0 <td>0 <td>0 </tr>
+    <tr><td>0 <td>0 <td>0 <td>0 </tr>
+    <tr><td>0 <td>0 <td>0 <td>0 </tr>
+    <tr><td>0 <td>0 <td>0 <td>0 </tr>
+    <tr><td>0 <td>0 <td>0 <td>0 </tr>
+  </tbody>
+</table>
+<div id="spacer"></div>
+<script>
+let firstEvent = true;
+const targetScrollPosition = 100;
+const hidden = document.querySelector("#hidden");
+const t = async_test("Scroll offset doesn't change when an element goes back and forth to display: none");
+window.onscroll = t.step_func(function() {
+  hidden.style.display = "block";
+  hidden.style.position = "absolute";
+  hidden.style.visibility = "hidden";
+  window.unused = hidden.offsetHeight;
+  hidden.style.display = "";
+  hidden.style.position = "";
+  hidden.style.visibility = "";
+
+  if (firstEvent) {
+    firstEvent = false;
+    requestAnimationFrame(t.step_func(function() {
+      requestAnimationFrame(t.step_func_done(function() {
+        assert_equals(document.scrollingElement.scrollTop, targetScrollPosition);
+      }));
+    }));
+  }
+});
+
+window.onload = t.step_func(function() {
+  window.scrollTo(0, targetScrollPosition);
+});
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-transforms/parsing/transform-box-computed.html b/tests/wpt/web-platform-tests/css/css-transforms/parsing/transform-box-computed.html
new file mode 100644
index 00000000000..d21beb20813
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-transforms/parsing/transform-box-computed.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS Transform Module Level 1: getComputedStyle().transformBox</title>
+<link rel="help" href="https://drafts.csswg.org/css-transforms/#transform-box-property">
+<meta name="assert" content="Computed transform-box is the specified keyword.">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<body>
+<div id="target"></div>
+<script>
+test_computed_value("transform-box", "content-box");
+test_computed_value("transform-box", "border-box");
+test_computed_value("transform-box", "fill-box");
+test_computed_value("transform-box", "stroke-box");
+test_computed_value("transform-box", "view-box");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/docs/writing-tests/file-names.md b/tests/wpt/web-platform-tests/docs/writing-tests/file-names.md
index 5e9e407088e..220e4ab33dc 100644
--- a/tests/wpt/web-platform-tests/docs/writing-tests/file-names.md
+++ b/tests/wpt/web-platform-tests/docs/writing-tests/file-names.md
@@ -16,11 +16,6 @@ are mutually exclusive.
 `-manual`
  : Indicates that a test is a non-automated test.
 
-`-support`
- : Indicates that a file is not a test but a support file.  Not
-   required for files in a directory called `resources`, `tools` or
-   `support`.
-
 `-visual`
  : Indicates that a file is a visual test.
 
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 e2110aff3b3..5d521f016f4 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
@@ -7,7 +7,7 @@ Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit
 <title>TreeWalker: acceptNode-filter</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <link rel="help" href="https://dom.spec.whatwg.org/#callbackdef-nodefilter">
 <div id=log></div>
 </head>
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 d1147637b13..100cb10de3e 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-basic.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-basic.html
@@ -7,7 +7,7 @@ Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit
 <title>TreeWalker: Basic test</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <div id=log></div>
 </head>
 <body>
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 8a09940b1e7..7c5d8810a86 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-currentNode.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-currentNode.html
@@ -7,7 +7,7 @@ Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit
 <title>TreeWalker: currentNode</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <div id=log></div>
 </head>
 <body>
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 236ab803c59..0147b81112e 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousNodeLastChildReject.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousNodeLastChildReject.html
@@ -7,7 +7,7 @@ Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit
 <title>TreeWalker: previousNodeLastChildReject</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <div id=log></div>
 </head>
 <body>
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 17da4d56971..5566564d240 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousSiblingLastChildSkip.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-previousSiblingLastChildSkip.html
@@ -7,7 +7,7 @@ Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit
 <title>TreeWalker: previousSiblingLastChildSkip</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <div id=log></div>
 </head>
 <body>
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 273b33236f9..53b734188c4 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
@@ -7,7 +7,7 @@ Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit
 <title>TreeWalker: traversal-reject</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <div id=log></div>
 </head>
 <body>
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 567ef665569..173922c15e6 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
@@ -7,7 +7,7 @@ Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit
 <title>TreeWalker: traversal-skip-most</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <div id=log></div>
 </head>
 <body>
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 0e3b81a274f..8c6f2bf22be 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
@@ -7,7 +7,7 @@ Test adapted from https://dxr.mozilla.org/chromium/source/src/third_party/WebKit
 <title>TreeWalker: traversal-skip</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <div id=log></div>
 </head>
 <body>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-walking-outside-a-tree.html b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-walking-outside-a-tree.html
index ad4334512ce..b99e33e01fa 100644
--- a/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-walking-outside-a-tree.html
+++ b/tests/wpt/web-platform-tests/dom/traversal/TreeWalker-walking-outside-a-tree.html
@@ -7,7 +7,7 @@ Test adapted from https://github.com/operasoftware/presto-testo/blob/master/core
 <title>TreeWalker: walking-outside-a-tree</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="traversal-support.js"></script>
+<script src="support/assert-node.js"></script>
 <div id=log></div>
 </head>
 <body>
diff --git a/tests/wpt/web-platform-tests/dom/traversal/traversal-support.js b/tests/wpt/web-platform-tests/dom/traversal/support/assert-node.js
similarity index 100%
rename from tests/wpt/web-platform-tests/dom/traversal/traversal-support.js
rename to tests/wpt/web-platform-tests/dom/traversal/support/assert-node.js
diff --git a/tests/wpt/web-platform-tests/eventsource/eventsource-onmessage-realm.htm b/tests/wpt/web-platform-tests/eventsource/eventsource-onmessage-realm.htm
index 9bc8c4646a4..db2218b5168 100644
--- a/tests/wpt/web-platform-tests/eventsource/eventsource-onmessage-realm.htm
+++ b/tests/wpt/web-platform-tests/eventsource/eventsource-onmessage-realm.htm
@@ -5,14 +5,14 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 
-<iframe src="eventsource-onmessage-realm-support.htm"></iframe>
+<iframe src="resources/eventsource-onmessage-realm.htm"></iframe>
 
 <script>
 "use strict";
 
 async_test(t => {
   window.onload = t.step_func(() => {
-    const source = new frames[0].EventSource("resources/message.py");
+    const source = new frames[0].EventSource("message.py");
     t.add_cleanup(() => {
       source.close();
     });
diff --git a/tests/wpt/web-platform-tests/eventsource/eventsource-onmessage-realm-support.htm b/tests/wpt/web-platform-tests/eventsource/resources/eventsource-onmessage-realm.htm
similarity index 100%
rename from tests/wpt/web-platform-tests/eventsource/eventsource-onmessage-realm-support.htm
rename to tests/wpt/web-platform-tests/eventsource/resources/eventsource-onmessage-realm.htm
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/resetting-a-form/reset-form-event-realm.html b/tests/wpt/web-platform-tests/html/semantics/forms/resetting-a-form/reset-form-event-realm.html
index ad2cda3ebbc..6c125c46d06 100644
--- a/tests/wpt/web-platform-tests/html/semantics/forms/resetting-a-form/reset-form-event-realm.html
+++ b/tests/wpt/web-platform-tests/html/semantics/forms/resetting-a-form/reset-form-event-realm.html
@@ -7,7 +7,7 @@
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 
-<iframe src="reset-form-event-realm-support.html"></iframe>
+<iframe src="support/reset-form-event-realm.html"></iframe>
 <iframe></iframe>
 
 <script>
diff --git a/tests/wpt/web-platform-tests/html/semantics/forms/resetting-a-form/reset-form-event-realm-support.html b/tests/wpt/web-platform-tests/html/semantics/forms/resetting-a-form/support/reset-form-event-realm.html
similarity index 100%
rename from tests/wpt/web-platform-tests/html/semantics/forms/resetting-a-form/reset-form-event-realm-support.html
rename to tests/wpt/web-platform-tests/html/semantics/forms/resetting-a-form/support/reset-form-event-realm.html
diff --git a/tests/wpt/web-platform-tests/html/syntax/parsing/DOMContentLoaded-defer.html b/tests/wpt/web-platform-tests/html/syntax/parsing/DOMContentLoaded-defer.html
index bf365c1a092..44946adf4e7 100644
--- a/tests/wpt/web-platform-tests/html/syntax/parsing/DOMContentLoaded-defer.html
+++ b/tests/wpt/web-platform-tests/html/syntax/parsing/DOMContentLoaded-defer.html
@@ -14,4 +14,4 @@ var t = async_test(function() {
   });
 });
 </script>
-<script defer src=DOMContentLoaded-defer-support.js></script>
+<script defer src=support/DOMContentLoaded-defer.js></script>
diff --git a/tests/wpt/web-platform-tests/html/syntax/parsing/DOMContentLoaded-defer-support.js b/tests/wpt/web-platform-tests/html/syntax/parsing/support/DOMContentLoaded-defer.js
similarity index 100%
rename from tests/wpt/web-platform-tests/html/syntax/parsing/DOMContentLoaded-defer-support.js
rename to tests/wpt/web-platform-tests/html/syntax/parsing/support/DOMContentLoaded-defer.js
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-support.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/support/xhtml-mathml-dtd-entity.htm
similarity index 100%
rename from tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-support.htm
rename to tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/support/xhtml-mathml-dtd-entity.htm
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-1.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-1.htm
index 4025e2a477f..a5d2015890c 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-1.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-1.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-10.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-10.htm
index 698239e1f48..a8ca0c22568 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-10.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-10.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-2.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-2.htm
index 9f511768a8f..d3e942d5287 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-2.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-2.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-3.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-3.htm
index a86c7a843ee..b375d50a8d0 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-3.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-3.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-4.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-4.htm
index 53a68b455c8..dda2893d27a 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-4.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-4.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-5.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-5.htm
index 17773322e68..2fedc6be55b 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-5.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-5.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-6.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-6.htm
index b1589bbac72..c7f7549ac4d 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-6.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-6.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-7.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-7.htm
index dc821d85582..1e61c2fa6ba 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-7.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-7.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-8.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-8.htm
index b16011c43bd..cf809063e69 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-8.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-8.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-9.htm b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-9.htm
index ec4d200560b..8f71d48e8a5 100644
--- a/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-9.htm
+++ b/tests/wpt/web-platform-tests/html/the-xhtml-syntax/parsing-xhtml-documents/xhtml-mathml-dtd-entity-9.htm
@@ -5,7 +5,7 @@
 
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<iframe id="test" src="xhtml-mathml-dtd-entity-support.htm"></iframe>
+<iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe>
 
 <script>
 onload = () => document.getElementById("test").contentWindow.run(
diff --git a/tests/wpt/web-platform-tests/interfaces/xslt.idl b/tests/wpt/web-platform-tests/interfaces/xslt.idl
new file mode 100644
index 00000000000..e97d8b00044
--- /dev/null
+++ b/tests/wpt/web-platform-tests/interfaces/xslt.idl
@@ -0,0 +1,16 @@
+// Content was manually copied July 12 2019
+// Source: https://wiki.whatwg.org/wiki/DOM_XSLTProcessor
+// There is no standard for this API. Only the link above, and notes in
+// the HTML5 standard (https://html.spec.whatwg.org/multipage/scripting.html#scriptTagXSLT)
+
+[Exposed=Window, Constructor]
+interface XSLTProcessor {
+  void importStylesheet(Node style);
+  [CEReactions] DocumentFragment transformToFragment(Node source, Document output);
+  [CEReactions] Document transformToDocument(Node source);
+  void setParameter([TreatNullAs=EmptyString] DOMString namespaceURI, DOMString localName, any value);
+  any getParameter([TreatNullAs=EmptyString] DOMString namespaceURI, DOMString localName);
+  void removeParameter([TreatNullAs=EmptyString] DOMString namespaceURI, DOMString localName);
+  void clearParameters();
+  void reset();
+};
diff --git a/tests/wpt/web-platform-tests/portals/portals-adopt-predecessor.html b/tests/wpt/web-platform-tests/portals/portals-adopt-predecessor.html
index 91c13277819..e75c3b59424 100644
--- a/tests/wpt/web-platform-tests/portals/portals-adopt-predecessor.html
+++ b/tests/wpt/web-platform-tests/portals/portals-adopt-predecessor.html
@@ -35,4 +35,21 @@
     });
     window.open(`resources/portals-adopt-predecessor.html?test=${test}`);
   }, "Tests that trying to adopt the predecessor after the PortalActivateEvent will throw an exception.");
+
+  promise_test(async t => {
+    var test = "adopt-and-activate";
+    window.open(`resources/portals-adopt-predecessor.html?test=${test}`);
+    var message = await waitForCompletion(test);
+    assert_equals(message, "passed");
+  }, "Tests that activating an adopted predecessor without inserting it works");
+
+  async_test(t => {
+    var test = "adopt-attach-remove";
+    var bc = new BroadcastChannel(`test-${test}`);
+    bc.onmessage = t.step_func_done(function(e) {
+      assert_equals(e.data, "passed");
+      bc.close();
+    });
+    window.open(`resources/portals-adopt-predecessor.html?test=${test}`);
+  }, "Tests that an adopting, inserting and then removing a predecessor works correctly");
 </script>
diff --git a/tests/wpt/web-platform-tests/portals/resources/portals-adopt-predecessor-portal.html b/tests/wpt/web-platform-tests/portals/resources/portals-adopt-predecessor-portal.html
index 78c6af1268c..0cf07f3f41c 100644
--- a/tests/wpt/web-platform-tests/portals/resources/portals-adopt-predecessor-portal.html
+++ b/tests/wpt/web-platform-tests/portals/resources/portals-adopt-predecessor-portal.html
@@ -37,5 +37,19 @@
         }
       });
     }
+    if (test == "adopt-and-activate") {
+      var portal = e.adoptPredecessor();
+      portal.activate();
+    }
+    if (test == "adopt-attach-remove") {
+      var portal = e.adoptPredecessor();
+      document.body.appendChild(portal);
+      setTimeout(() => {
+        document.body.removeChild(portal);
+        var bc_test = new BroadcastChannel(`test-${test}`);
+        bc_test.postMessage("passed");
+        bc_test.close();
+      });
+    }
   }
 </script>
diff --git a/tests/wpt/web-platform-tests/portals/resources/portals-adopt-predecessor.html b/tests/wpt/web-platform-tests/portals/resources/portals-adopt-predecessor.html
index 4bd01c338ed..66d47d12ac2 100644
--- a/tests/wpt/web-platform-tests/portals/resources/portals-adopt-predecessor.html
+++ b/tests/wpt/web-platform-tests/portals/resources/portals-adopt-predecessor.html
@@ -8,6 +8,9 @@
   portal.src = `portals-adopt-predecessor-portal.html?test=${test}`;
   portal.onload = () => {
     portal.activate().then(() => {
+      window.addEventListener("portalactivate", e => {
+        window.opener.postMessage({test, message: "passed"}, "*");
+      });
       window.portalHost.addEventListener("message", e => {
         window.opener.postMessage({test, message: e.data}, "*");
       });
diff --git a/tests/wpt/web-platform-tests/tools/manifest/sourcefile.py b/tests/wpt/web-platform-tests/tools/manifest/sourcefile.py
index a34153d1c72..54cd3b74488 100644
--- a/tests/wpt/web-platform-tests/tools/manifest/sourcefile.py
+++ b/tests/wpt/web-platform-tests/tools/manifest/sourcefile.py
@@ -339,7 +339,6 @@ class SourceFile(object):
                 self.filename == "META.yml" or
                 self.filename.startswith(".") or
                 self.filename.endswith(".headers") or
-                self.type_flag == "support" or
                 self.in_non_test_dir())
 
     @property
diff --git a/tests/wpt/web-platform-tests/tools/manifest/tests/test_sourcefile.py b/tests/wpt/web-platform-tests/tools/manifest/tests/test_sourcefile.py
index 0483311e2d2..0a7a1ca0b41 100644
--- a/tests/wpt/web-platform-tests/tools/manifest/tests/test_sourcefile.py
+++ b/tests/wpt/web-platform-tests/tools/manifest/tests/test_sourcefile.py
@@ -35,7 +35,6 @@ def items(s):
     "foo/tools/test.html",
     "foo/resources/test.html",
     "foo/support/test.html",
-    "foo/test-support.html",
     "foo/foo-manual.html.headers",
     "css/common/test.html",
     "css/CSS2/archive/test.html",
@@ -56,6 +55,7 @@ def test_name_is_non_test(rel_path):
     "foo/css21/archive/test.html",
     "foo/CSS2/archive/test.html",
     "css/css21/archive/test.html",
+    "foo/test-support.html",
 ])
 def test_not_name_is_non_test(rel_path):
     s = create(rel_path)
diff --git a/tests/wpt/web-platform-tests/touch-events/historical.html b/tests/wpt/web-platform-tests/touch-events/historical.html
index 27cc88d8ce0..a6bd80e2bf5 100644
--- a/tests/wpt/web-platform-tests/touch-events/historical.html
+++ b/tests/wpt/web-platform-tests/touch-events/historical.html
@@ -3,7 +3,7 @@
 <title>Historical touch events features</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="touch-support.js"></script>
+<script src="support/touch.js"></script>
 <body>
 <script>
 [
diff --git a/tests/wpt/web-platform-tests/touch-events/touch-support.js b/tests/wpt/web-platform-tests/touch-events/support/touch.js
similarity index 100%
rename from tests/wpt/web-platform-tests/touch-events/touch-support.js
rename to tests/wpt/web-platform-tests/touch-events/support/touch.js
diff --git a/tests/wpt/web-platform-tests/touch-events/touch-touchevent-constructor.html b/tests/wpt/web-platform-tests/touch-events/touch-touchevent-constructor.html
index 15b2db735fd..1b723b7bb3c 100644
--- a/tests/wpt/web-platform-tests/touch-events/touch-touchevent-constructor.html
+++ b/tests/wpt/web-platform-tests/touch-events/touch-touchevent-constructor.html
@@ -4,7 +4,7 @@
 <title>Touch and TouchEvent Constructor Tests</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="touch-support.js"></script>
+<script src="support/touch.js"></script>
 </head>
 <body>
 <div id="target0"></div>
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/element_clear/clear.py b/tests/wpt/web-platform-tests/webdriver/tests/element_clear/clear.py
index a1017745f3d..cb34fedb4ef 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/element_clear/clear.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/element_clear/clear.py
@@ -267,7 +267,7 @@ def test_contenteditable(session, add_event_listeners, tracked_events):
     response = element_clear(session, element)
     assert_success(response)
     assert element.property("innerHTML") == ""
-    assert_events_equal(session, ["focus", "change", "blur"])
+    assert_events_equal(session, ["focus", "blur"])
     assert_element_has_focus(session.execute_script("return document.body"))
 
 
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/execute_async_script/properties.py b/tests/wpt/web-platform-tests/webdriver/tests/execute_async_script/properties.py
index 207daae1283..394ae3294cd 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/execute_async_script/properties.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/execute_async_script/properties.py
@@ -14,7 +14,7 @@ def execute_async_script(session, script, args=None):
 def test_content_attribute(session):
     session.url = inline("<input value=foobar>")
     response = execute_async_script(session, """
-        const [resolve] = arguments;
+        const resolve = arguments[0];
         const input = document.querySelector("input");
         resolve(input.value);
         """)
@@ -30,7 +30,7 @@ def test_idl_attribute(session):
         </script>
         """)
     response = execute_async_script(session, """
-        const [resolve] = arguments;
+        const resolve = arguments[0];
         const input = document.querySelector("input");
         resolve(input.value);
         """)
@@ -43,13 +43,15 @@ def test_idl_attribute_element(session):
         <p>bar
 
         <script>
-        const [foo, bar] = document.querySelectorAll("p");
+        const elements = document.querySelectorAll("p");
+        let foo = elements[0];
+        let bar = elements[1];
         foo.bar = bar;
         </script>
         """)
     _foo, bar = session.find.css("p")
     response = execute_async_script(session, """
-        const [resolve] = arguments;
+        const resolve = arguments[0];
         const foo = document.querySelector("p");
         resolve(foo.bar);
         """)
@@ -64,7 +66,7 @@ def test_script_defining_property(session):
         input.foobar = "foobar";
         """)
     response = execute_async_script(session, """
-        const [resolve] = arguments;
+        const resolve = arguments[0];
         const input = document.querySelector("input");
         resolve(input.foobar);
         """)
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/execute_script/properties.py b/tests/wpt/web-platform-tests/webdriver/tests/execute_script/properties.py
index 92f4722fbf6..2be4f1f3ccc 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/execute_script/properties.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/execute_script/properties.py
@@ -41,7 +41,9 @@ def test_idl_attribute_element(session):
         <p>bar
 
         <script>
-        const [foo, bar] = document.querySelectorAll("p");
+        const elements = document.querySelectorAll("p");
+        let foo = elements[0];
+        let bar = elements[1];
         foo.bar = bar;
         </script>
         """)
diff --git a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceConnectionState.https.html b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceConnectionState.https.html
index 385bb51719e..282771153c4 100644
--- a/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceConnectionState.https.html
+++ b/tests/wpt/web-platform-tests/webrtc/RTCPeerConnection-iceConnectionState.https.html
@@ -1,5 +1,6 @@
 <!doctype html>
 <meta charset=utf-8>
+<meta name="timeout" content="long">
 <title>RTCPeerConnection.prototype.iceConnectionState</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
diff --git a/tests/wpt/web-platform-tests/workers/semantics/interface-objects/001.worker.js b/tests/wpt/web-platform-tests/workers/semantics/interface-objects/001.worker.js
index a2b09fd1a16..6d965b6ba33 100644
--- a/tests/wpt/web-platform-tests/workers/semantics/interface-objects/001.worker.js
+++ b/tests/wpt/web-platform-tests/workers/semantics/interface-objects/001.worker.js
@@ -15,6 +15,7 @@ var expected = [
   "CanvasGradient",
   "CanvasPattern",
   "CanvasPath",
+  "TextMetrics",
   "Path2D",
   "PromiseRejectionEvent",
   "EventSource",
diff --git a/tests/wpt/web-platform-tests/workers/semantics/interface-objects/002.worker.js b/tests/wpt/web-platform-tests/workers/semantics/interface-objects/002.worker.js
index 27be44396f5..bbaf66d3383 100644
--- a/tests/wpt/web-platform-tests/workers/semantics/interface-objects/002.worker.js
+++ b/tests/wpt/web-platform-tests/workers/semantics/interface-objects/002.worker.js
@@ -10,7 +10,6 @@ var unexpected = [
   "Audio",
   "HTMLCanvasElement",
   "Path",
-  "TextMetrics",
   "CanvasProxy",
   "CanvasRenderingContext2D",
   "DrawingStyle",
diff --git a/tests/wpt/web-platform-tests/xslt/META.yml b/tests/wpt/web-platform-tests/xslt/META.yml
new file mode 100644
index 00000000000..9c059d2e911
--- /dev/null
+++ b/tests/wpt/web-platform-tests/xslt/META.yml
@@ -0,0 +1,4 @@
+# NOTE: There is no standard for this API, only:
+# https://wiki.whatwg.org/wiki/DOM_XSLTProcessor
+# and the notes in the HTML5 spec, linked.
+spec: https://html.spec.whatwg.org/multipage/scripting.html#scriptTagXSLT
diff --git a/tests/wpt/web-platform-tests/xslt/externalScript.js b/tests/wpt/web-platform-tests/xslt/externalScript.js
new file mode 100644
index 00000000000..7a2bf362255
--- /dev/null
+++ b/tests/wpt/web-platform-tests/xslt/externalScript.js
@@ -0,0 +1 @@
+window.externalScript = true;
diff --git a/tests/wpt/web-platform-tests/xslt/idlharness.window.js b/tests/wpt/web-platform-tests/xslt/idlharness.window.js
new file mode 100644
index 00000000000..51b0cd3dbac
--- /dev/null
+++ b/tests/wpt/web-platform-tests/xslt/idlharness.window.js
@@ -0,0 +1,15 @@
+// META: script=/resources/WebIDLParser.js
+// META: script=/resources/idlharness.js
+
+'use strict';
+
+idl_test(
+  ['xslt'],
+  ['html'],
+  async idlArray => {
+    idlArray.add_objects({
+      XSLTProcessor: ['processor']
+    });
+    self.processor = new XSLTProcessor();
+  }
+);
diff --git a/tests/wpt/web-platform-tests/xslt/transformToFragment.tentative.window.js b/tests/wpt/web-platform-tests/xslt/transformToFragment.tentative.window.js
new file mode 100644
index 00000000000..7bb6a568554
--- /dev/null
+++ b/tests/wpt/web-platform-tests/xslt/transformToFragment.tentative.window.js
@@ -0,0 +1,39 @@
+const cases = {
+  internal: '<script>window.internalScript = true;</script>',
+  external: '<script src="externalScript.js"></script>',
+};
+
+const loaded = new Promise(resolve => {
+  window.addEventListener('load', resolve);
+});
+
+Object.entries(cases).forEach(([k, v]) => {
+  const xsltSrc = `<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+<xsl:output method="html" encoding="utf-8" version="5"/>
+<xsl:template match="/">
+  <section>
+    ${v}
+  </section>
+</xsl:template>
+</xsl:stylesheet>`;
+
+  const processor = new XSLTProcessor();
+  const parser = new DOMParser();
+  processor.importStylesheet(
+    parser.parseFromString(xsltSrc, 'application/xml')
+  );
+  document.body.appendChild(
+    processor.transformToFragment(
+      parser.parseFromString('<x/>', 'application/xml'),
+      document
+    )
+  );
+
+  promise_test(async () => {
+    await loaded;
+    assert_true(
+      window[`${k}Script`],
+      'script element from XSLTProcessor.transformToFragment() is evaluated'
+    );
+  }, `${k} script`);
+})