diff --git a/tests/wpt/metadata/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html.ini b/tests/wpt/metadata/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html.ini
index 52f0380ea08..3b2a0ef665d 100644
--- a/tests/wpt/metadata/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html.ini
+++ b/tests/wpt/metadata/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html.ini
@@ -3,3 +3,6 @@
   [Canvas test: 2d.text.measure.width.basic]
     expected: FAIL
 
+  [The width of character is same as font used]
+    expected: FAIL
+
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..6a3af4e2ece 100644
--- a/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
+++ b/tests/wpt/metadata/FileAPI/url/url-with-fetch.any.js.ini
@@ -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]
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 5d2f68f56a7..78e0c31af3c 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -122995,42 +122995,6 @@
      {}
     ]
    ],
-   "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative.html": [
-    [
-     "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative.html",
-     [
-      [
-       "/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
-   "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative.html": [
-    [
-     "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative.html",
-     [
-      [
-       "/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
-   "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative.html": [
-    [
-     "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative.html",
-     [
-      [
-       "/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative-ref.html",
-       "=="
-      ]
-     ],
-     {}
-    ]
-   ],
    "css/css-fonts/quoted-generic-ignored.html": [
     [
      "css/css-fonts/quoted-generic-ignored.html",
@@ -242632,15 +242596,6 @@
    "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative-ref.html": [
     []
    ],
-   "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative-ref.html": [
-    []
-   ],
-   "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative-ref.html": [
-    []
-   ],
-   "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative-ref.html": [
-    []
-   ],
    "css/css-fonts/quoted-generic-ignored-ref.html": [
     []
    ],
@@ -247471,9 +247426,6 @@
    "css/css-grid/animation/grid-template-rows-001-ref.html": [
     []
    ],
-   "css/css-grid/animation/resources/interpolation-testcommon.js": [
-    []
-   ],
    "css/css-grid/grid-definition/grid-template-columns-fit-content-001-ref.html": [
     []
    ],
@@ -256936,9 +256888,6 @@
    "css/motion/animation/reftests/offset-path-path-interpolation-ref.html": [
     []
    ],
-   "css/motion/animation/resources/interpolation-testcommon.js": [
-    []
-   ],
    "css/motion/offset-anchor-transform-box-fill-box-ref.html": [
     []
    ],
@@ -257224,6 +257173,9 @@
    "css/support/inheritance-testcommon.js": [
     []
    ],
+   "css/support/interpolation-testcommon.js": [
+    []
+   ],
    "css/support/parsing-testcommon.js": [
     []
    ],
@@ -312399,6 +312351,12 @@
      {}
     ]
    ],
+   "css/css-position/position-absolute-crash-chrome-008.html": [
+    [
+     "css/css-position/position-absolute-crash-chrome-008.html",
+     {}
+    ]
+   ],
    "css/css-position/position-absolute-dynamic-containing-block.html": [
     [
      "css/css-position/position-absolute-dynamic-containing-block.html",
@@ -321433,6 +321391,30 @@
      {}
     ]
    ],
+   "css/filter-effects/animation/filter-interpolation-001.html": [
+    [
+     "css/filter-effects/animation/filter-interpolation-001.html",
+     {}
+    ]
+   ],
+   "css/filter-effects/animation/filter-interpolation-002.html": [
+    [
+     "css/filter-effects/animation/filter-interpolation-002.html",
+     {}
+    ]
+   ],
+   "css/filter-effects/animation/filter-interpolation-003.html": [
+    [
+     "css/filter-effects/animation/filter-interpolation-003.html",
+     {}
+    ]
+   ],
+   "css/filter-effects/animation/filter-interpolation-004.html": [
+    [
+     "css/filter-effects/animation/filter-interpolation-004.html",
+     {}
+    ]
+   ],
    "css/filter-effects/inheritance.html": [
     [
      "css/filter-effects/inheritance.html",
@@ -321729,6 +321711,12 @@
      {}
     ]
    ],
+   "css/mediaqueries/forced-colors.html": [
+    [
+     "css/mediaqueries/forced-colors.html",
+     {}
+    ]
+   ],
    "css/mediaqueries/prefers-color-scheme.html": [
     [
      "css/mediaqueries/prefers-color-scheme.html",
@@ -368938,6 +368926,66 @@
      {}
     ]
    ],
+   "offscreen-canvas/text/2d.text.measure.actualBoundingBox.html": [
+    [
+     "offscreen-canvas/text/2d.text.measure.actualBoundingBox.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js": [
+    [
+     "offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.advances.html": [
+    [
+     "offscreen-canvas/text/2d.text.measure.advances.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.advances.worker.js": [
+    [
+     "offscreen-canvas/text/2d.text.measure.advances.worker.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.baselines.html": [
+    [
+     "offscreen-canvas/text/2d.text.measure.baselines.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.baselines.worker.js": [
+    [
+     "offscreen-canvas/text/2d.text.measure.baselines.worker.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.emHeights.html": [
+    [
+     "offscreen-canvas/text/2d.text.measure.emHeights.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.emHeights.worker.js": [
+    [
+     "offscreen-canvas/text/2d.text.measure.emHeights.worker.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.fontBoundingBox.html": [
+    [
+     "offscreen-canvas/text/2d.text.measure.fontBoundingBox.html",
+     {}
+    ]
+   ],
+   "offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.js": [
+    [
+     "offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.html",
+     {}
+    ]
+   ],
    "offscreen-canvas/text/2d.text.measure.width.basic.html": [
     [
      "offscreen-canvas/text/2d.text.measure.width.basic.html",
@@ -431485,7 +431533,7 @@
  },
  "paths": {
   ".azure-pipelines.yml": [
-   "72a509e6b19d2d1e3b1b47e134eac8c94eb3bb5f",
+   "1a8950b870fbad7bb343889c9cf5f091bb56a3fa",
    "support"
   ],
   ".codecov.yml": [
@@ -432689,31 +432737,31 @@
    "testharness"
   ],
   "2dcontext/drawing-text-to-the-canvas/2d.text.measure.actualBoundingBox.html": [
-   "484af7c239935c073f29df8fe517000af183cc71",
+   "6ab0c387002f6ce9c6397c9f780b57e8df514819",
    "testharness"
   ],
   "2dcontext/drawing-text-to-the-canvas/2d.text.measure.advances.html": [
-   "ed8c04d0ab791b2aba4b58fdc42935fb936f0bc5",
+   "1830d1dee05e423b95faf2c52c1ddccf0e4fde8b",
    "testharness"
   ],
   "2dcontext/drawing-text-to-the-canvas/2d.text.measure.baselines.html": [
-   "2472889a607f5a39e10d18f9a53d9addb6ddb9c2",
+   "c3e5f6aa3d01b65696813a3676eddb6c3bdfed05",
    "testharness"
   ],
   "2dcontext/drawing-text-to-the-canvas/2d.text.measure.emHeights.html": [
-   "36087e7b035020c51504f9efddb130fda66f4ebd",
+   "6c7d5373f61dbcf00fec60e28210ed94583f04bf",
    "testharness"
   ],
   "2dcontext/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.html": [
-   "1c9bfc492c1d1e57e857cf92ff3cf0172b8b464a",
+   "cbe98ba7628673cb4a649a6f4d2b37b97b0e4478",
    "testharness"
   ],
   "2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html": [
-   "1cfe16438f4910db4b03e40a00ca8a31e0d9fe85",
+   "5a5a57adda757c061b4f23850d79b50f21aee53e",
    "testharness"
   ],
   "2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.empty.html": [
-   "add8ce5ba5f1fcdee619c59f523ae5688166ec93",
+   "70f0f07a9cf9f0b4596868d397912e7590adc5e7",
    "testharness"
   ],
   "2dcontext/fill-and-stroke-styles/2d.fillStyle.default.html": [
@@ -435361,7 +435409,7 @@
    "testharness"
   ],
   "2dcontext/text-styles/2d.text.measure.width.space.html": [
-   "d6e37a19cb631bc1669e868de92a825cd530d838",
+   "82a6118fee94967da02125a01bfd3611eb080eee",
    "testharness"
   ],
   "2dcontext/text-styles/canvas_text_font_001-ref.htm": [
@@ -435521,7 +435569,7 @@
    "support"
   ],
   "2dcontext/tools/tests2dtext.yaml": [
-   "f89d6d48a4f0e364086414d5869565b9358967c4",
+   "0ee476d755dc7647e7b258974f3aad2cf6ea680e",
    "support"
   ],
   "2dcontext/transformations/2d.transformation.order.html": [
@@ -539873,35 +539921,11 @@
    "reftest"
   ],
   "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative-ref.html": [
-   "26d76a1661bf73b6b4862f2d473acc648050fd85",
+   "f98f3ee3e869864b5d75d4bce4be823319b975d7",
    "support"
   ],
   "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative.html": [
-   "151e1552bf23f10fbc75a22542e34b2755287746",
-   "reftest"
-  ],
-  "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative-ref.html": [
-   "4f695e05d1ca432db4d479e5260045e93178c732",
-   "support"
-  ],
-  "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative.html": [
-   "3c5416a86d3ca072c4a5f3bf175f2b782be028ef",
-   "reftest"
-  ],
-  "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative-ref.html": [
-   "d13d90c2b54452d24fbb0b77812e82e9c7a7b29d",
-   "support"
-  ],
-  "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative.html": [
-   "abca2487f4a21b82738dc0845efeb29c61d1bb42",
-   "reftest"
-  ],
-  "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative-ref.html": [
-   "de0dab2e1847894f630e834e7e3d5c536ab0dc05",
-   "support"
-  ],
-  "css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative.html": [
-   "350f086c466de27659ac5baa861311b96c87cdea",
+   "951bc84417be110cba83e885d7124dec274c5d49",
    "reftest"
   ],
   "css/css-fonts/math-script-level-and-math-style/math-style-001.tentative.html": [
@@ -547929,7 +547953,7 @@
    "reftest"
   ],
   "css/css-grid/animation/grid-template-columns-interpolation.html": [
-   "4adba6de3feaa99357f88bb5df68d12103ab06e7",
+   "e42a4243543dc43a876724ce1f74a2c1d496c077",
    "testharness"
   ],
   "css/css-grid/animation/grid-template-rows-001-ref.html": [
@@ -547941,13 +547965,9 @@
    "reftest"
   ],
   "css/css-grid/animation/grid-template-rows-interpolation.html": [
-   "42152bcdf203faf70e2941552b71c7689222df57",
+   "3c650395df082f0240b88f5868fc10ec04960d53",
    "testharness"
   ],
-  "css/css-grid/animation/resources/interpolation-testcommon.js": [
-   "530b4fea5c3d9e231bee887394c75888fad47b8b",
-   "support"
-  ],
   "css/css-grid/grid-definition/fr-unit-with-percentage.html": [
    "82c97abdd5740d466f049d8b45b67e241f204899",
    "reftest"
@@ -554652,6 +554672,10 @@
    "9c24210c2570224f6a1812b84148c4ca468a4473",
    "testharness"
   ],
+  "css/css-position/position-absolute-crash-chrome-008.html": [
+   "3d1c90930cf3f0b794ea34fcdbcb347cb6d3863c",
+   "testharness"
+  ],
   "css/css-position/position-absolute-dynamic-containing-block.html": [
    "3968f685849663574ca213fcb90dc5fb3eaffaa3",
    "testharness"
@@ -587396,6 +587420,22 @@
    "930b762b01a1a75e5b5ab4fb18dedd5939618fe1",
    "support"
   ],
+  "css/filter-effects/animation/filter-interpolation-001.html": [
+   "b4a4b3f4bbad00fb76ee731dd9ed2ac7c2be41bc",
+   "testharness"
+  ],
+  "css/filter-effects/animation/filter-interpolation-002.html": [
+   "1b66c2751d417438bee5c8349cf1359dd2042f4a",
+   "testharness"
+  ],
+  "css/filter-effects/animation/filter-interpolation-003.html": [
+   "5ca1229e297fc65c3a9f4127913d8cc8813de66e",
+   "testharness"
+  ],
+  "css/filter-effects/animation/filter-interpolation-004.html": [
+   "63dd17361a3e01b08435cff90ea7efdf4ebc64ca",
+   "testharness"
+  ],
   "css/filter-effects/backdrop-filter-basic-background-color-ref.html": [
    "a3dbad0b497d0ab7eaab494178fa87be78cf0d3c",
    "support"
@@ -587937,7 +587977,7 @@
    "testharness"
   ],
   "css/filter-effects/parsing/backdrop-filter-computed.html": [
-   "96de7b941bafda4e87c185148f6f11169e1d80a7",
+   "d947e2c8711c65ed0589c8354ecc1d4d11a96134",
    "testharness"
   ],
   "css/filter-effects/parsing/backdrop-filter-parsing-invalid.html": [
@@ -587961,7 +588001,7 @@
    "testharness"
   ],
   "css/filter-effects/parsing/filter-computed.html": [
-   "0c9bb9e19630bf8eb049e2ce2120e6dc87aa7634",
+   "2e7f3b478b576e8351fd5b63ceae37d08a33ae6f",
    "testharness"
   ],
   "css/filter-effects/parsing/filter-parsing-invalid.html": [
@@ -588528,6 +588568,10 @@
    "403829dfd2ad0dec10d17f9915df32a7749a35a8",
    "reftest"
   ],
+  "css/mediaqueries/forced-colors.html": [
+   "005b5cf4a8bd01d9f360d808c1c8700c85de9364",
+   "testharness"
+  ],
   "css/mediaqueries/media-queries-001.xht": [
    "ae8736e9d4b6242544f40fcd1919aa59e7d6264f",
    "visual"
@@ -588645,39 +588689,39 @@
    "support"
   ],
   "css/motion/animation/offset-anchor-interpolation.html": [
-   "414a0bd0d7013839cd43593d8216cf7d041d23ad",
+   "7ad9482a2b4b65eda290a9ed33f3db24acd7bce9",
    "testharness"
   ],
   "css/motion/animation/offset-distance-interpolation.html": [
-   "a56878a0a5ab7d68051bfaba108a697596ec3e5b",
+   "4912b9cf2510b45915756b320f5872dad2cae5d8",
    "testharness"
   ],
   "css/motion/animation/offset-path-interpolation-001.html": [
-   "279152e103380894a2f397eb98cc1118cfb25fd3",
+   "5b90813bb591d0aa7e17eeddcb1a9e3a908670f0",
    "testharness"
   ],
   "css/motion/animation/offset-path-interpolation-002.html": [
-   "742e9d0a9edde810f23f07db617a14a1350324f4",
+   "2841bd9562ebceb7aa294d0bdf8cff2c3b1c45d1",
    "testharness"
   ],
   "css/motion/animation/offset-path-interpolation-003.html": [
-   "a6d4e89efd0c4c869e2013b517a0258f728d8966",
+   "44c0285055ed41d8e3ed0cffb018b2342cbc6b15",
    "testharness"
   ],
   "css/motion/animation/offset-path-interpolation-004.html": [
-   "f3e07ab97b4c5a04a539541e2b1c9a72260b4fc1",
+   "860348649b101755ce2fc63de1789bf840c46b5a",
    "testharness"
   ],
   "css/motion/animation/offset-path-interpolation-005.html": [
-   "617fff0490d961ade48199e72dd63c33f7286415",
+   "afe4bf5774357f0387f1ab63642ab6d02a8e9c6a",
    "testharness"
   ],
   "css/motion/animation/offset-position-interpolation.html": [
-   "c31034d10f8bf62d48aac030b98ed54a60714ded",
+   "5ccca37dc304fbdabf73f0bc074b54d2682c6336",
    "testharness"
   ],
   "css/motion/animation/offset-rotate-interpolation.html": [
-   "3b3d755f4f1faec257abd1a75eba11f8d4616d05",
+   "a55a005747f6d0a45a950b8b2315c8a71970043c",
    "testharness"
   ],
   "css/motion/animation/reftests/offset-distance-interpolation-001.html": [
@@ -588696,10 +588740,6 @@
    "360caeea68242cc80cbdb131884c633a6f3f7b47",
    "reftest"
   ],
-  "css/motion/animation/resources/interpolation-testcommon.js": [
-   "6933733e1970d06fd5473b74f7ba63a9a821624a",
-   "support"
-  ],
   "css/motion/inheritance.html": [
    "4a82f32cd58694f43314b6f52fc5e828ddfd8f01",
    "testharness"
@@ -590916,6 +590956,10 @@
    "8d1645f9b110137408837418423a2ed42a588072",
    "support"
   ],
+  "css/support/interpolation-testcommon.js": [
+   "9bc71ff9d32e372551d5b75cfd329dd6ce114949",
+   "support"
+  ],
   "css/support/parsing-testcommon.js": [
    "7ecd588aaf5160f121b9eb240f58d2739135c829",
    "support"
@@ -606173,7 +606217,7 @@
    "support"
   ],
   "feature-policy/experimental-features/layout-animations-disabled-tentative.html": [
-   "993aa0d5dc9407188725f305a3325acea5855971",
+   "0190eaa84f75e3097b95f70adde89296d47cc1f3",
    "testharness"
   ],
   "feature-policy/experimental-features/layout-animations-disabled-tentative.html.headers": [
@@ -606197,7 +606241,7 @@
    "support"
   ],
   "feature-policy/experimental-features/layout-animations-enabled-tentative.html": [
-   "cf396e9022344f059223421808dd36c7e67b3a54",
+   "19e405496eef72d176d007c93f7262e6a12b3806",
    "testharness"
   ],
   "feature-policy/experimental-features/lazyload/lazyload-disabled-image-tentative.sub.html": [
@@ -641684,28 +641728,68 @@
    "11a96dcd745e3c282f352ad44b8485319846eb89",
    "testharness"
   ],
+  "offscreen-canvas/text/2d.text.measure.actualBoundingBox.html": [
+   "e747d30680318cb8c0a9214219b4eefe9e74cd6c",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js": [
+   "da6eac509f13e7ce3e6e736b2f661b9c4b7e908f",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.advances.html": [
+   "ce03b2bc432499b5b5bc94ebf7bf0820c256ea4c",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.advances.worker.js": [
+   "ff696f896496e6e80ce9a5d413e5838e4996cca5",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.baselines.html": [
+   "7812c4e41ec40b0e67e4e51a7a992ffbfd80aedd",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.baselines.worker.js": [
+   "721eccfe7bbe8e9ca64c9689648f1403d4e61e89",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.emHeights.html": [
+   "be8be39a1043c72c806d3340e6ab6d2383464e70",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.emHeights.worker.js": [
+   "561bcb8dc2d7dd8f2a1faf66e15ded48527fdd8d",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.fontBoundingBox.html": [
+   "91e7f5fdc87a20bea258a983f2d95f027e9f72b7",
+   "testharness"
+  ],
+  "offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.js": [
+   "b9038bc31d0e9104808c3508ebabf37fc8cb1be5",
+   "testharness"
+  ],
   "offscreen-canvas/text/2d.text.measure.width.basic.html": [
-   "a01c1099ebc6b56864e36a0ddbccfd5e4cd0a183",
+   "4712c1cdf3dad7d4353d2d3c675969f2c1f92157",
    "testharness"
   ],
   "offscreen-canvas/text/2d.text.measure.width.basic.worker.js": [
-   "b4ca23b2a40a23e36192f43965675af6be6ea291",
+   "b646b789e3dc28912b4444076f4e0fa0fe4ae607",
    "testharness"
   ],
   "offscreen-canvas/text/2d.text.measure.width.empty.html": [
-   "6173d183ca263f4008248a791ee24809dfddccc0",
+   "1f48f77f3c8b260733d7713367dcd9c6b07f24ec",
    "testharness"
   ],
   "offscreen-canvas/text/2d.text.measure.width.empty.worker.js": [
-   "d9c71afafa6b16d18b0f0ca550818f2c4bf78e50",
+   "35dca25c658325784362f20dbdc4f1d3c84cc0c8",
    "testharness"
   ],
   "offscreen-canvas/text/2d.text.measure.width.space.html": [
-   "b4cdc8b0c6bcfcaf3bfc0072f364e8e8caf17867",
+   "bfe895684f46e922bbb53bc4328f78d48fd0b5e3",
    "testharness"
   ],
   "offscreen-canvas/text/2d.text.measure.width.space.worker.js": [
-   "5fc91b8488233e91a0182af2d02e97e2140bba76",
+   "25b594a1cc662f292f912cee9ba84b5187025a97",
    "testharness"
   ],
   "offscreen-canvas/the-canvas-state/2d.state.saverestore.bitmap.html": [
@@ -642277,7 +642361,7 @@
    "support"
   ],
   "offscreen-canvas/tools/tests2d.yaml": [
-   "ed712922dd15526ef8cbbe784445be2326e299a8",
+   "0aaad783101b5695fe49a9c3869fdb4e6ee69a18",
    "support"
   ],
   "offscreen-canvas/transformations/2d.transformation.order.html": [
@@ -643161,15 +643245,15 @@
    "testharness"
   ],
   "payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html": [
-   "090af39ed76bc2ef45ec608c3bc05f7c74ac0bd2",
+   "b0e0cbacbf2e611139cd30747acaaf1186ae21f6",
    "testharness"
   ],
   "payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html": [
-   "d77024eb7fcb48f02ab4bb7468d395f494cb82bd",
+   "45661de7e0dedd19cda4a7a2f0a76aaa72e91ccc",
    "testharness"
   ],
   "payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html": [
-   "4564d264c4e2c542b25740e92709c9e7c0a14a1d",
+   "06f0c8479da9450c748fe01c6d411f73355210da",
    "testharness"
   ],
   "payment-request/billing-address-changed-manual.https.html": [
diff --git a/tests/wpt/metadata/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative.html.ini b/tests/wpt/metadata/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative.html.ini
deleted file mode 100644
index 1db3bfd05e8..00000000000
--- a/tests/wpt/metadata/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[math-script-level-font-size-clamping-001.tentative.html]
-  expected: FAIL
diff --git a/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-001.html.ini b/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-001.html.ini
new file mode 100644
index 00000000000..a42d2f65e10
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-001.html.ini
@@ -0,0 +1,37 @@
+[filter-interpolation-001.html]
+  [Animation between "hue-rotate(0deg) blur(6px)" and "hue-rotate(180deg) blur(10px)" at progress -0.5]
+    expected: FAIL
+
+  [Animation between "hue-rotate(0deg) blur(6px)" and "hue-rotate(180deg) blur(10px)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "hue-rotate(80deg) blur(6mm)" and "hue-rotate(100grad) blur(1cm)" at progress -0.5]
+    expected: FAIL
+
+  [Animation between "hue-rotate(0deg) blur(6px)" and "hue-rotate(180deg) blur(10px)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "hue-rotate(80deg) blur(6mm)" and "hue-rotate(100grad) blur(1cm)" at progress 1]
+    expected: FAIL
+
+  [Animation between "hue-rotate(0deg) blur(6px)" and "hue-rotate(180deg) blur(10px)" at progress 1]
+    expected: FAIL
+
+  [Animation between "hue-rotate(0deg) blur(6px)" and "hue-rotate(180deg) blur(10px)" at progress 0]
+    expected: FAIL
+
+  [Animation between "hue-rotate(80deg) blur(6mm)" and "hue-rotate(100grad) blur(1cm)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "hue-rotate(0deg) blur(6px)" and "hue-rotate(180deg) blur(10px)" at progress 0.25]
+    expected: FAIL
+
+  [Animation between "hue-rotate(80deg) blur(6mm)" and "hue-rotate(100grad) blur(1cm)" at progress 0.25]
+    expected: FAIL
+
+  [Animation between "hue-rotate(80deg) blur(6mm)" and "hue-rotate(100grad) blur(1cm)" at progress 0]
+    expected: FAIL
+
+  [Animation between "hue-rotate(80deg) blur(6mm)" and "hue-rotate(100grad) blur(1cm)" at progress 0.5]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-002.html.ini b/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-002.html.ini
new file mode 100644
index 00000000000..00ded6318d9
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-002.html.ini
@@ -0,0 +1,49 @@
+[filter-interpolation-002.html]
+  [Animation between "grayscale(0) blur(0px)" and "blur(10px)" at progress -1]
+    expected: FAIL
+
+  [Animation between "grayscale(0) blur(0px)" and "blur(10px)" at progress 2]
+    expected: FAIL
+
+  [Animation between "grayscale(0) blur(0px)" and "blur(10px)" at progress 0.4]
+    expected: FAIL
+
+  [Animation between "blur(6px)" and "blur(10px) hue-rotate(180deg)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "grayscale(0) blur(0px)" and "blur(10px)" at progress 1]
+    expected: FAIL
+
+  [Animation between "blur(6px)" and "blur(10px) hue-rotate(180deg)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "grayscale(0) blur(0px)" and "blur(10px)" at progress 0.6]
+    expected: FAIL
+
+  [Animation between "blur(6px)" and "blur(10px) hue-rotate(180deg)" at progress 1]
+    expected: FAIL
+
+  [Animation between "none" and "opacity(0.5) hue-rotate(180deg)" at progress 0.25]
+    expected: FAIL
+
+  [Animation between "none" and "opacity(0.5) hue-rotate(180deg)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "none" and "opacity(0.5) hue-rotate(180deg)" at progress 1]
+    expected: FAIL
+
+  [Animation between "none" and "opacity(0.5) hue-rotate(180deg)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "grayscale(0) blur(0px)" and "blur(10px)" at progress 0]
+    expected: FAIL
+
+  [Animation between "blur(6px)" and "blur(10px) hue-rotate(180deg)" at progress 0.25]
+    expected: FAIL
+
+  [Animation between "blur(6px)" and "blur(10px) hue-rotate(180deg)" at progress -0.5]
+    expected: FAIL
+
+  [Animation between "none" and "opacity(0.5) hue-rotate(180deg)" at progress -0.5]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-003.html.ini b/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-003.html.ini
new file mode 100644
index 00000000000..4cf2c13b76e
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-003.html.ini
@@ -0,0 +1,145 @@
+[filter-interpolation-003.html]
+  [Animation between "url("#svgfilter")" and "none" at progress 0.4]
+    expected: FAIL
+
+  [Animation between "none" and "blur(10px)" at progress 1]
+    expected: FAIL
+
+  [Animation between "none" and "sepia(1)" at progress -1]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "none" at progress -1]
+    expected: FAIL
+
+  [Animation between "none" and "grayscale(1)" at progress -1]
+    expected: FAIL
+
+  [Animation between "saturate(0)" and "none" at progress 0]
+    expected: FAIL
+
+  [Animation between "saturate(0)" and "none" at progress -1]
+    expected: FAIL
+
+  ["url("#svgfilter")" and "none" are valid filter values]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "none" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "url("#svgfilter")" and "none" at progress 0]
+    expected: FAIL
+
+  [Animation between "url("#svgfilter")" and "none" at progress 1]
+    expected: FAIL
+
+  [Animation between "url("#svgfilter")" and "none" at progress 2]
+    expected: FAIL
+
+  [Animation between "none" and "invert(1)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "none" and "sepia(1)" at progress 1]
+    expected: FAIL
+
+  [Animation between "none" and "invert(1)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "none" and "grayscale(1)" at progress 0.5]
+    expected: FAIL
+
+  ["none" and "drop-shadow(20px 10px green)" are valid filter values]
+    expected: FAIL
+
+  [Animation between "none" and "grayscale(1)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "none" at progress 0]
+    expected: FAIL
+
+  [Animation between "none" and "hue-rotate(360deg)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "none" and "hue-rotate(360deg)" at progress 1]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "none" at progress 0]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "none" at progress -1]
+    expected: FAIL
+
+  [Animation between "none" and "grayscale(1)" at progress 1]
+    expected: FAIL
+
+  [Animation between "none" and "blur(10px)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "saturate(0)" and "none" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "none" and "blur(10px)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "none" and "hue-rotate(360deg)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "none" and "drop-shadow(20px 10px green)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "none" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "none" at progress 0]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "none" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "none" and "drop-shadow(20px 10px green)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "url("#svgfilter")" and "none" at progress 0.6]
+    expected: FAIL
+
+  [Animation between "none" and "blur(10px)" at progress -1]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "none" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "none" and "drop-shadow(20px 10px green)" at progress -1]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "none" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "none" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "none" at progress -1]
+    expected: FAIL
+
+  [Animation between "none" and "invert(1)" at progress -1]
+    expected: FAIL
+
+  [Animation between "none" and "invert(1)" at progress 1]
+    expected: FAIL
+
+  [Animation between "none" and "hue-rotate(360deg)" at progress -1]
+    expected: FAIL
+
+  [Animation between "saturate(0)" and "none" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "url("#svgfilter")" and "none" at progress -1]
+    expected: FAIL
+
+  [Animation between "none" and "drop-shadow(20px 10px green)" at progress 1]
+    expected: FAIL
+
+  [Animation between "none" and "sepia(1)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "none" and "sepia(1)" at progress 1.5]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-004.html.ini b/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-004.html.ini
new file mode 100644
index 00000000000..1cdaaaf6709
--- /dev/null
+++ b/tests/wpt/metadata/css/filter-effects/animation/filter-interpolation-004.html.ini
@@ -0,0 +1,154 @@
+[filter-interpolation-004.html]
+  [Animation between "saturate(0)" and "saturate()" at progress 1]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "opacity()" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "sepia(0)" and "sepia()" at progress 1]
+    expected: FAIL
+
+  [Animation between "invert(0)" and "invert()" at progress -1]
+    expected: FAIL
+
+  [Animation between "invert(0)" and "invert()" at progress 1]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "opacity()" at progress 1]
+    expected: FAIL
+
+  [Animation between "sepia(0)" and "sepia()" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "invert(0)" and "invert()" at progress 0]
+    expected: FAIL
+
+  [Animation between "blur()" and "blur(10px)" at progress 1]
+    expected: FAIL
+
+  [Animation between "blur()" and "blur(10px)" at progress 0]
+    expected: FAIL
+
+  [Animation between "grayscale(0)" and "grayscale()" at progress 1]
+    expected: FAIL
+
+  [Animation between "grayscale(0)" and "grayscale()" at progress 0]
+    expected: FAIL
+
+  [Animation between "saturate(0)" and "saturate()" at progress 1.5]
+    expected: FAIL
+
+  ["drop-shadow(0px 0px)" and "drop-shadow(20px 10px 30px green)" are valid filter values]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "opacity()" at progress 0]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "brightness()" at progress 1]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "brightness()" at progress 0]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "brightness()" at progress -1]
+    expected: FAIL
+
+  [Animation between "drop-shadow(0px 0px)" and "drop-shadow(20px 10px 30px green)" at progress -1]
+    expected: FAIL
+
+  [Animation between "hue-rotate()" and "hue-rotate(360deg)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "brightness()" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "grayscale(0)" and "grayscale()" at progress -1]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "contrast()" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "invert(0)" and "invert()" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "saturate(0)" and "saturate()" at progress 0]
+    expected: FAIL
+
+  [Animation between "sepia(0)" and "sepia()" at progress 0]
+    expected: FAIL
+
+  [Animation between "invert(0)" and "invert()" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "hue-rotate()" and "hue-rotate(360deg)" at progress 1]
+    expected: FAIL
+
+  [Animation between "hue-rotate()" and "hue-rotate(360deg)" at progress 0]
+    expected: FAIL
+
+  [Animation between "blur()" and "blur(10px)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "contrast()" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "blur()" and "blur(10px)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "brightness(0)" and "brightness()" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "hue-rotate()" and "hue-rotate(360deg)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "contrast()" at progress -1]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "contrast()" at progress 1]
+    expected: FAIL
+
+  [Animation between "contrast(0)" and "contrast()" at progress 0]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "opacity()" at progress -1]
+    expected: FAIL
+
+  [Animation between "blur()" and "blur(10px)" at progress -1]
+    expected: FAIL
+
+  [Animation between "sepia(0)" and "sepia()" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "drop-shadow(0px 0px)" and "drop-shadow(20px 10px 30px green)" at progress 0]
+    expected: FAIL
+
+  [Animation between "drop-shadow(0px 0px)" and "drop-shadow(20px 10px 30px green)" at progress 1]
+    expected: FAIL
+
+  [Animation between "grayscale(0)" and "grayscale()" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "saturate(0)" and "saturate()" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "grayscale(0)" and "grayscale()" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "sepia(0)" and "sepia()" at progress -1]
+    expected: FAIL
+
+  [Animation between "drop-shadow(0px 0px)" and "drop-shadow(20px 10px 30px green)" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "drop-shadow(0px 0px)" and "drop-shadow(20px 10px 30px green)" at progress 1.5]
+    expected: FAIL
+
+  [Animation between "opacity(0)" and "opacity()" at progress 0.5]
+    expected: FAIL
+
+  [Animation between "saturate(0)" and "saturate()" at progress -1]
+    expected: FAIL
+
+  [Animation between "hue-rotate()" and "hue-rotate(360deg)" at progress -1]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/filter-effects/parsing/backdrop-filter-computed.html.ini b/tests/wpt/metadata/css/filter-effects/parsing/backdrop-filter-computed.html.ini
index b89270eb2c2..668b41b7a22 100644
--- a/tests/wpt/metadata/css/filter-effects/parsing/backdrop-filter-computed.html.ini
+++ b/tests/wpt/metadata/css/filter-effects/parsing/backdrop-filter-computed.html.ini
@@ -83,3 +83,9 @@
   [Property backdrop-filter value 'blur(100px)' computes to 'blur(100px)']
     expected: FAIL
 
+  [Property backdrop-filter value 'invert()' computes to 'invert(1)']
+    expected: FAIL
+
+  [Property backdrop-filter value 'brightness()' computes to 'brightness(1)']
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/mediaqueries/forced-colors.html.ini b/tests/wpt/metadata/css/mediaqueries/forced-colors.html.ini
new file mode 100644
index 00000000000..fb909430073
--- /dev/null
+++ b/tests/wpt/metadata/css/mediaqueries/forced-colors.html.ini
@@ -0,0 +1,22 @@
+[forced-colors.html]
+  [Should be parseable in JS: '(forced-colors)']
+    expected: FAIL
+
+  [Should be parseable in JS: '(forced-colors: active)']
+    expected: FAIL
+
+  [Should be parseable in JS: '(forced-colors: none)']
+    expected: FAIL
+
+  [Should be parseable in a CSS stylesheet: '(forced-colors: none)']
+    expected: FAIL
+
+  [Should be parseable in a CSS stylesheet: '(forced-colors)']
+    expected: FAIL
+
+  [Check that none evaluates to false in the boolean context]
+    expected: FAIL
+
+  [Should be parseable in a CSS stylesheet: '(forced-colors: active)']
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/encoding/single-byte-decoder.html.ini b/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
index 939a36eb9d9..3d135f3bd66 100644
--- a/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
+++ b/tests/wpt/metadata/encoding/single-byte-decoder.html.ini
@@ -2,6 +2,7 @@
   type: testharness
 
 [single-byte-decoder.html?document]
+  expected: TIMEOUT
   [ISO-8859-4: iso_8859-4:1988 (document.characterSet and document.inputEncoding)]
     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 fd5d7772285..917c8e602c3 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -312,9 +312,6 @@
   [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
     expected: FAIL
 
@@ -324,9 +321,18 @@
   [<iframe>: separate response Content-Type: text/html;charset=gbk text/plain text/html]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: */* text/html]
+  [<iframe>: combined response Content-Type: text/html */*]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
+  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     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 a63e414f43a..536384f36e1 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,6 +11,6 @@
   [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]
+  [X-Content-Type-Options%3A%20%2Cnosniff]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html.ini b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html.ini
new file mode 100644
index 00000000000..e495b626d2e
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/browsing-the-web/navigating-across-documents/navigation-unload-same-origin-fragment.html.ini
@@ -0,0 +1,4 @@
+[navigation-unload-same-origin-fragment.html]
+  [Tests that a fragment navigation in the unload handler will not block the initial navigation]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/005.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/005.html.ini
new file mode 100644
index 00000000000..5b809c1ea07
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/005.html.ini
@@ -0,0 +1,4 @@
+[005.html]
+  [<body onpopstate="..."> should register a listener for the popstate event]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
deleted file mode 100644
index 385376c7321..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_4.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-innerwidth-innerheight.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-innerwidth-innerheight.html.ini
index e02f179ec25..bf50d59df41 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-innerwidth-innerheight.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-innerwidth-innerheight.html.ini
@@ -1,24 +1,5 @@
 [open-features-negative-innerwidth-innerheight.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: negative values for legacy `innerwidth`, `innerheight`]
     expected: FAIL
 
-  [features "innerheight=-404.5" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "innerwidth=-404.5" should NOT set "width=404"]
-    expected: TIMEOUT
-
-  [features "innerwidth=-404" should NOT set "width=404"]
-    expected: TIMEOUT
-
-  [features "innerheight=-404e1" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "innerheight=-404" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "innerwidth=-404e1" should NOT set "width=404"]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-screenx-screeny.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-screenx-screeny.html.ini
index 23eefb8eaf9..e150c9d848f 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-screenx-screeny.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-screenx-screeny.html.ini
@@ -1,24 +1,5 @@
 [open-features-negative-screenx-screeny.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: negative values for legacy `screenx`, `screeny`]
     expected: FAIL
 
-  [features "screenx=-204" should NOT set "left=204"]
-    expected: TIMEOUT
-
-  [features "screeny=-204" should NOT set "top=204"]
-    expected: TIMEOUT
-
-  [features "screeny=-204.5" should NOT set "top=204"]
-    expected: TIMEOUT
-
-  [features "screeny=-0" should NOT set "top=204"]
-    expected: TIMEOUT
-
-  [features "screenx=-0" should NOT set "left=204"]
-    expected: TIMEOUT
-
-  [features "screenx=-204.5" should NOT set "left=204"]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-top-left.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-top-left.html.ini
index 940516ddd33..ad8840fbb68 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-top-left.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-top-left.html.ini
@@ -1,24 +1,5 @@
 [open-features-negative-top-left.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: negative values for `top`, `left`]
     expected: FAIL
 
-  [features "top=-204" should NOT set "top=204"]
-    expected: TIMEOUT
-
-  [features "top=-204.5" should NOT set "top=204"]
-    expected: TIMEOUT
-
-  [features "left=-204" should NOT set "left=204"]
-    expected: TIMEOUT
-
-  [features "top=-0" should NOT set "top=204"]
-    expected: TIMEOUT
-
-  [features "left=-204.5" should NOT set "left=204"]
-    expected: TIMEOUT
-
-  [features "left=-0" should NOT set "left=204"]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-width-height.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-width-height.html.ini
index 9027336b453..d1ed9088b2b 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-width-height.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-negative-width-height.html.ini
@@ -1,24 +1,5 @@
 [open-features-negative-width-height.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: negative values for `width`, `height`]
     expected: FAIL
 
-  [features "height=-404" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "height=-404e1" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "height=-404.5" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "width=-404" should NOT set "width=404"]
-    expected: TIMEOUT
-
-  [features "width=-404e1" should NOT set "width=404"]
-    expected: TIMEOUT
-
-  [features "width=-404.5" should NOT set "width=404"]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-height.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-height.html.ini
index 4e44584b123..a70e9dbad4d 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-height.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-height.html.ini
@@ -1,48 +1,32 @@
 [open-features-non-integer-height.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: non-integer values for feature `height`]
     expected: FAIL
 
   [features "height=405*3" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "height=405.32" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "height=405e1" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "height=405/5" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "height=405^4" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "height=405.5" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "height=405e-1" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "height=405  " should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "height=405LLl" should set "height=405"]
-    expected: TIMEOUT
-
-  [features "height=/404" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [top=0,left=0,width=401,: absence of feature "height" should be treated same as "height=0"]
-    expected: TIMEOUT
-
-  [top=0,left=0: absence of feature "height" should be treated same as "height=0"]
-    expected: TIMEOUT
-
-  [features "height=_404" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "height=L404" should NOT set "height=404"]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-innerheight.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-innerheight.html.ini
index fcaeae5336d..779531b4a98 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-innerheight.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-innerheight.html.ini
@@ -1,42 +1,32 @@
 [open-features-non-integer-innerheight.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: non-integer values for legacy feature `innerheight`]
     expected: FAIL
 
   [features "innerheight=405e-1" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerheight=405LLl" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerheight=405^4" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerheight=405e1" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerheight=405  " should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerheight=405/5" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerheight=405.32" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerheight=405.5" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerheight=405*3" should set "height=405"]
-    expected: TIMEOUT
-
-  [features "innerheight=_404" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "innerheight=L404" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "innerheight=/404" should NOT set "height=404"]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-innerwidth.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-innerwidth.html.ini
index 42327fedd27..7a1b258d52e 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-innerwidth.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-innerwidth.html.ini
@@ -1,42 +1,32 @@
 [open-features-non-integer-innerwidth.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: non-integer values for legacy feature `innerwidth`]
     expected: FAIL
 
   [features "innerwidth=405e-1" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerwidth=405*3" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerwidth=405.5" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerwidth=405e1" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerwidth=405.32" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerwidth=405  " should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerwidth=405LLl" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerwidth=405/5" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "innerwidth=405^4" should set "width=405"]
-    expected: TIMEOUT
-
-  [features "innerwidth=/404" should NOT set "width=404"]
-    expected: TIMEOUT
-
-  [features "innerwidth=_404" should NOT set "width=404"]
-    expected: TIMEOUT
-
-  [features "innerwidth=L404" should NOT set "width=404"]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-left.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-left.html.ini
index a8e4fe06618..caba4124f0b 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-left.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-left.html.ini
@@ -1,42 +1,32 @@
 [open-features-non-integer-left.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: non-integer values for feature `left`]
     expected: FAIL
 
   [features "left=105e1" should set "left=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "left=105  " should set "left=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "left=105/5" should set "left=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "left=105e-1" should set "left=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "left=105^4" should set "left=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "left=105LLl" should set "left=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "left=105.32" should set "left=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "left=105*3" should set "left=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "left=105.5" should set "left=105"]
-    expected: TIMEOUT
-
-  [features "left=L104" should NOT set "left=104"]
-    expected: TIMEOUT
-
-  [features "left=/104" should NOT set "left=104"]
-    expected: TIMEOUT
-
-  [features "left=_104" should NOT set "left=104"]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-screeny.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-screeny.html.ini
index 4f22ef4ef29..a82bd0f981a 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-screeny.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-screeny.html.ini
@@ -1,42 +1,32 @@
 [open-features-non-integer-screeny.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: non-integer values for legacy feature `screeny`]
     expected: FAIL
 
   [features "screeny=405^4" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "screeny=405e-1" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "screeny=405LLl" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "screeny=405e1" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "screeny=405  " should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "screeny=405/5" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "screeny=405*3" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "screeny=405.32" should set "height=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "screeny=405.5" should set "height=405"]
-    expected: TIMEOUT
-
-  [features "screeny=_404" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "screeny=L404" should NOT set "height=404"]
-    expected: TIMEOUT
-
-  [features "screeny=/404" should NOT set "height=404"]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-top.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-top.html.ini
index 8540f53d8d6..10f617db69e 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-top.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-top.html.ini
@@ -1,42 +1,32 @@
 [open-features-non-integer-top.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: non-integer values for feature `top`]
     expected: FAIL
 
   [features "top=105/5" should set "top=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "top=105*3" should set "top=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "top=105LLl" should set "top=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "top=105e-1" should set "top=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "top=105.32" should set "top=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "top=105e1" should set "top=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "top=105  " should set "top=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "top=105^4" should set "top=105"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "top=105.5" should set "top=105"]
-    expected: TIMEOUT
-
-  [features "top=/104" should NOT set "top=104"]
-    expected: TIMEOUT
-
-  [features "top=_104" should NOT set "top=104"]
-    expected: TIMEOUT
-
-  [features "top=L104" should NOT set "top=104"]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-width.html.ini b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-width.html.ini
index 9d841e61bc0..28f93ee71b5 100644
--- a/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-width.html.ini
+++ b/tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/open-features-non-integer-width.html.ini
@@ -1,48 +1,32 @@
 [open-features-non-integer-width.html]
   type: testharness
-  expected: TIMEOUT
   [HTML: window.open `features`: non-integer values for feature `width`]
     expected: FAIL
 
   [features "width=405^4" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "width=405.5" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "width=405e1" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "width=405  " should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "width=405.32" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "width=405LLl" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "width=405*3" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "width=405e-1" should set "width=405"]
-    expected: TIMEOUT
+    expected: FAIL
 
   [features "width=405/5" should set "width=405"]
-    expected: TIMEOUT
-
-  [top=0,left=0: absence of feature "width" should be treated same as "width=0"]
-    expected: TIMEOUT
-
-  [features "width=_404" should NOT set "width=404"]
-    expected: TIMEOUT
-
-  [top=0,left=0,height=401,: absence of feature "width" should be treated same as "width=0"]
-    expected: TIMEOUT
-
-  [features "width=/404" should NOT set "width=404"]
-    expected: TIMEOUT
-
-  [features "width=L404" should NOT set "width=404"]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
deleted file mode 100644
index 8cc42056d34..00000000000
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
+++ /dev/null
@@ -1,10 +0,0 @@
-[non-active-document.html]
-  [DOMParser]
-    expected: FAIL
-
-  [createHTMLDocument]
-    expected: FAIL
-
-  [<template>]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/semantics/interactive-elements/the-details-element/toggleEvent.html.ini b/tests/wpt/metadata/html/semantics/interactive-elements/the-details-element/toggleEvent.html.ini
deleted file mode 100644
index 9e522297c94..00000000000
--- a/tests/wpt/metadata/html/semantics/interactive-elements/the-details-element/toggleEvent.html.ini
+++ /dev/null
@@ -1,7 +0,0 @@
-[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/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
index 034d9baebfa..496bad988c6 100644
--- a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
+++ b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
@@ -1,5 +1,4 @@
 [promise-rejection-events.html]
-  expected: TIMEOUT
   [delayed handling: delaying handling rejected promise created from createImageBitmap will cause both events to fire]
     expected: FAIL
 
@@ -9,6 +8,3 @@
   [no unhandledrejection/rejectionhandled: rejection handler attached synchronously to a promise created from createImageBitmap]
     expected: FAIL
 
-  [rejectionhandled is dispatched from a queued task, and not immediately]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.actualBoundingBox.html.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.actualBoundingBox.html.ini
new file mode 100644
index 00000000000..63e0d7211b4
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.actualBoundingBox.html.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.actualBoundingBox.html]
+  [Testing actualBoundingBox for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js.ini
new file mode 100644
index 00000000000..12a20d87916
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.actualBoundingBox.worker.html]
+  [Testing actualBoundingBox for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.advances.html.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.advances.html.ini
new file mode 100644
index 00000000000..d4d10c1a9ff
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.advances.html.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.advances.html]
+  [Testing width advances for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.advances.worker.js.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.advances.worker.js.ini
new file mode 100644
index 00000000000..631e5f51138
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.advances.worker.js.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.advances.worker.html]
+  [Testing width advances for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.baselines.html.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.baselines.html.ini
new file mode 100644
index 00000000000..dacda0474e0
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.baselines.html.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.baselines.html]
+  [Testing baselines for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.baselines.worker.js.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.baselines.worker.js.ini
new file mode 100644
index 00000000000..a5ea22a47b5
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.baselines.worker.js.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.baselines.worker.html]
+  [Testing baselines for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.emHeights.html.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.emHeights.html.ini
new file mode 100644
index 00000000000..80212ec5dc0
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.emHeights.html.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.emHeights.html]
+  [Testing emHeights for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.emHeights.worker.js.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.emHeights.worker.js.ini
new file mode 100644
index 00000000000..d101015d3b5
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.emHeights.worker.js.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.emHeights.worker.html]
+  [Testing emHeights for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.fontBoundingBox.html.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.fontBoundingBox.html.ini
new file mode 100644
index 00000000000..71d6e8bf76b
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.fontBoundingBox.html.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.fontBoundingBox.html]
+  [Testing fontBoundingBox for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.js.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.js.ini
new file mode 100644
index 00000000000..e11570b0aa4
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.js.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.fontBoundingBox.worker.html]
+  [Testing fontBoundingBox for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.basic.html.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.basic.html.ini
new file mode 100644
index 00000000000..9146392b646
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.basic.html.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.width.basic.html]
+  [The width of character is same as font used for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.basic.worker.js.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.basic.worker.js.ini
new file mode 100644
index 00000000000..b2e48b2d5b9
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.basic.worker.js.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.width.basic.worker.html]
+  [The width of character is same as font used for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.empty.html.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.empty.html.ini
new file mode 100644
index 00000000000..3f013857951
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.empty.html.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.width.empty.html]
+  [The empty string has zero width for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.empty.worker.js.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.empty.worker.js.ini
new file mode 100644
index 00000000000..f78fd87f7e7
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.empty.worker.js.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.width.empty.worker.html]
+  [The empty string has zero width for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.space.html.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.space.html.ini
new file mode 100644
index 00000000000..5ed3378b4f6
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.space.html.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.width.space.html]
+  [Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.space.worker.js.ini b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.space.worker.js.ini
new file mode 100644
index 00000000000..fc8abc87933
--- /dev/null
+++ b/tests/wpt/metadata/offscreen-canvas/text/2d.text.measure.width.space.worker.js.ini
@@ -0,0 +1,4 @@
+[2d.text.measure.width.space.worker.html]
+  [Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas]
+    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/mozilla/meta/css/transition_calc_implicit.html.ini b/tests/wpt/mozilla/meta/css/transition_calc_implicit.html.ini
new file mode 100644
index 00000000000..dbea4f293ad
--- /dev/null
+++ b/tests/wpt/mozilla/meta/css/transition_calc_implicit.html.ini
@@ -0,0 +1,2 @@
+[transition_calc_implicit.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/web-platform-tests/.azure-pipelines.yml b/tests/wpt/web-platform-tests/.azure-pipelines.yml
index 72a509e6b19..1a8950b870f 100644
--- a/tests/wpt/web-platform-tests/.azure-pipelines.yml
+++ b/tests/wpt/web-platform-tests/.azure-pipelines.yml
@@ -256,7 +256,7 @@ jobs:
   - template: tools/ci/azure/install_edge.yml
   - template: tools/ci/azure/update_hosts.yml
   - template: tools/ci/azure/update_manifest.yml
-  - script: python ./wpt run --yes --no-manifest-update --no-restart-on-unexpected --no-fail-on-unexpected --install-fonts --this-chunk $(System.JobPositionInPhase) --total-chunks $(System.TotalJobsInPhase) --chunk-type hash --log-tbpl - --log-tbpl-level info --log-wptreport $(Build.ArtifactStagingDirectory)/wpt_report_$(System.JobPositionInPhase).json --log-wptscreenshot $(Build.ArtifactStagingDirectory)/wpt_screenshot_$(System.JobPositionInPhase).txt edgechromium
+  - script: python ./wpt run --yes --no-manifest-update --no-restart-on-unexpected --no-fail-on-unexpected --install-fonts --this-chunk $(System.JobPositionInPhase) --total-chunks $(System.TotalJobsInPhase) --chunk-type hash --log-tbpl - --log-tbpl-level info --log-wptreport $(Build.ArtifactStagingDirectory)/wpt_report_$(System.JobPositionInPhase).json --log-wptscreenshot $(Build.ArtifactStagingDirectory)/wpt_screenshot_$(System.JobPositionInPhase).txt --channel dev edgechromium
     displayName: 'Run tests (Edge Dev)'
   - task: PublishBuildArtifacts@1
     displayName: 'Publish results'
@@ -270,7 +270,9 @@ jobs:
 
 - job: results_safari
   displayName: 'all tests (Safari)'
-  condition: eq(variables['Build.Reason'], 'Schedule')
+  condition: |
+    or(eq(variables['Build.Reason'], 'Schedule'),
+       and(eq(variables['Build.Reason'], 'Manual'), variables['run_all_safari']))
   strategy:
     parallel: 4 # chosen to make runtime ~2h
   timeoutInMinutes: 360
diff --git a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.actualBoundingBox.html b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.actualBoundingBox.html
index 484af7c2399..6ab0c387002 100644
--- a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.actualBoundingBox.html
+++ b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.actualBoundingBox.html
@@ -27,23 +27,27 @@ var t = async_test("Testing actualBoundingBox");
 _addTest(function(canvas, ctx) {
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    ctx.direction = 'ltr';
-    ctx.align = 'left'
-    ctx.baseline = 'alphabetic'
-    // Some platforms may return '-0'.
-    _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxLeft)", "0");
-    // Different platforms may render text slightly different.
-    _assert(ctx.measureText('A').actualBoundingBoxRight >= 50, "ctx.measureText('A').actualBoundingBoxRight >= 50");
-    _assert(ctx.measureText('A').actualBoundingBoxAscent >= 35, "ctx.measureText('A').actualBoundingBoxAscent >= 35");
-    _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxDescent), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxDescent)", "0");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+document.fonts.add(f);
+document.fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        ctx.baseline = 'alphabetic'
+        // Some platforms may return '-0'.
+        _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxLeft)", "0");
+        // Different platforms may render text slightly different.
+        _assert(ctx.measureText('A').actualBoundingBoxRight >= 50, "ctx.measureText('A').actualBoundingBoxRight >= 50");
+        _assert(ctx.measureText('A').actualBoundingBoxAscent >= 35, "ctx.measureText('A').actualBoundingBoxAscent >= 35");
+        _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxDescent), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxDescent)", "0");
 
-    _assertSame(Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft)", "0");
-    _assert(ctx.measureText('ABCD').actualBoundingBoxRight >= 200, "ctx.measureText('ABCD').actualBoundingBoxRight >= 200");
-    _assert(ctx.measureText('ABCD').actualBoundingBoxAscent >= 85, "ctx.measureText('ABCD').actualBoundingBoxAscent >= 85");
-    _assert(ctx.measureText('ABCD').actualBoundingBoxDescent >= 37, "ctx.measureText('ABCD').actualBoundingBoxDescent >= 37");
-}), 500);
+        _assertSame(Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft)", "0");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxRight >= 200, "ctx.measureText('ABCD').actualBoundingBoxRight >= 200");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxAscent >= 85, "ctx.measureText('ABCD').actualBoundingBoxAscent >= 85");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxDescent >= 37, "ctx.measureText('ABCD').actualBoundingBoxDescent >= 37");
+    }), 500);
+});
 
 
 });
diff --git a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.advances.html b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.advances.html
index ed8c04d0ab7..1830d1dee05 100644
--- a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.advances.html
+++ b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.advances.html
@@ -27,25 +27,29 @@ var t = async_test("Testing width advances");
 _addTest(function(canvas, ctx) {
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    ctx.direction = 'ltr';
-    ctx.align = 'left'
-    // Some platforms may return '-0'.
-    _assertSame(Math.abs(ctx.measureText('Hello').advances[0]), 0, "Math.abs(ctx.measureText('Hello').advances[\""+(0)+"\"])", "0");
-    // Different platforms may render text slightly different.
-    _assert(ctx.measureText('Hello').advances[1] >= 36, "ctx.measureText('Hello').advances[\""+(1)+"\"] >= 36");
-    _assert(ctx.measureText('Hello').advances[2] >= 58, "ctx.measureText('Hello').advances[\""+(2)+"\"] >= 58");
-    _assert(ctx.measureText('Hello').advances[3] >= 70, "ctx.measureText('Hello').advances[\""+(3)+"\"] >= 70");
-    _assert(ctx.measureText('Hello').advances[4] >= 80, "ctx.measureText('Hello').advances[\""+(4)+"\"] >= 80");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+document.fonts.add(f);
+document.fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        // Some platforms may return '-0'.
+        _assertSame(Math.abs(ctx.measureText('Hello').advances[0]), 0, "Math.abs(ctx.measureText('Hello').advances[\""+(0)+"\"])", "0");
+        // Different platforms may render text slightly different.
+        _assert(ctx.measureText('Hello').advances[1] >= 36, "ctx.measureText('Hello').advances[\""+(1)+"\"] >= 36");
+        _assert(ctx.measureText('Hello').advances[2] >= 58, "ctx.measureText('Hello').advances[\""+(2)+"\"] >= 58");
+        _assert(ctx.measureText('Hello').advances[3] >= 70, "ctx.measureText('Hello').advances[\""+(3)+"\"] >= 70");
+        _assert(ctx.measureText('Hello').advances[4] >= 80, "ctx.measureText('Hello').advances[\""+(4)+"\"] >= 80");
 
-    var tm = ctx.measureText('Hello');
-    _assertSame(ctx.measureText('Hello').advances[0], tm.advances[0], "ctx.measureText('Hello').advances[\""+(0)+"\"]", "tm.advances[\""+(0)+"\"]");
-    _assertSame(ctx.measureText('Hello').advances[1], tm.advances[1], "ctx.measureText('Hello').advances[\""+(1)+"\"]", "tm.advances[\""+(1)+"\"]");
-    _assertSame(ctx.measureText('Hello').advances[2], tm.advances[2], "ctx.measureText('Hello').advances[\""+(2)+"\"]", "tm.advances[\""+(2)+"\"]");
-    _assertSame(ctx.measureText('Hello').advances[3], tm.advances[3], "ctx.measureText('Hello').advances[\""+(3)+"\"]", "tm.advances[\""+(3)+"\"]");
-    _assertSame(ctx.measureText('Hello').advances[4], tm.advances[4], "ctx.measureText('Hello').advances[\""+(4)+"\"]", "tm.advances[\""+(4)+"\"]");
-}), 500);
+        var tm = ctx.measureText('Hello');
+        _assertSame(ctx.measureText('Hello').advances[0], tm.advances[0], "ctx.measureText('Hello').advances[\""+(0)+"\"]", "tm.advances[\""+(0)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[1], tm.advances[1], "ctx.measureText('Hello').advances[\""+(1)+"\"]", "tm.advances[\""+(1)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[2], tm.advances[2], "ctx.measureText('Hello').advances[\""+(2)+"\"]", "tm.advances[\""+(2)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[3], tm.advances[3], "ctx.measureText('Hello').advances[\""+(3)+"\"]", "tm.advances[\""+(3)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[4], tm.advances[4], "ctx.measureText('Hello').advances[\""+(4)+"\"]", "tm.advances[\""+(4)+"\"]");
+    }), 500);
+});
 
 
 });
diff --git a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.baselines.html b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.baselines.html
index 2472889a607..c3e5f6aa3d0 100644
--- a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.baselines.html
+++ b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.baselines.html
@@ -27,18 +27,22 @@ var t = async_test("Testing baselines");
 _addTest(function(canvas, ctx) {
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    ctx.direction = 'ltr';
-    ctx.align = 'left'
-    _assertSame(Math.abs(ctx.measureText('A').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('A').getBaselines().alphabetic)", "0");
-    _assertSame(ctx.measureText('A').getBaselines().ideographic, -39, "ctx.measureText('A').getBaselines().ideographic", "-39");
-    _assertSame(ctx.measureText('A').getBaselines().hanging, 68, "ctx.measureText('A').getBaselines().hanging", "68");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+document.fonts.add(f);
+document.fonts.ready.then(() => {
+     step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(Math.abs(ctx.measureText('A').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('A').getBaselines().alphabetic)", "0");
+        _assertSame(ctx.measureText('A').getBaselines().ideographic, -39, "ctx.measureText('A').getBaselines().ideographic", "-39");
+        _assertSame(ctx.measureText('A').getBaselines().hanging, 68, "ctx.measureText('A').getBaselines().hanging", "68");
 
-    _assertSame(Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic)", "0");
-    _assertSame(ctx.measureText('ABCD').getBaselines().ideographic, -39, "ctx.measureText('ABCD').getBaselines().ideographic", "-39");
-    _assertSame(ctx.measureText('ABCD').getBaselines().hanging, 68, "ctx.measureText('ABCD').getBaselines().hanging", "68");
-}), 500);
+        _assertSame(Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic)", "0");
+        _assertSame(ctx.measureText('ABCD').getBaselines().ideographic, -39, "ctx.measureText('ABCD').getBaselines().ideographic", "-39");
+        _assertSame(ctx.measureText('ABCD').getBaselines().hanging, 68, "ctx.measureText('ABCD').getBaselines().hanging", "68");
+    }), 500);
+});
 
 
 });
diff --git a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.emHeights.html b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.emHeights.html
index 36087e7b035..6c7d5373f61 100644
--- a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.emHeights.html
+++ b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.emHeights.html
@@ -27,18 +27,22 @@ var t = async_test("Testing emHeights");
 _addTest(function(canvas, ctx) {
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    ctx.direction = 'ltr';
-    ctx.align = 'left'
-    _assertSame(ctx.measureText('A').emHeightAscent, 37.5, "ctx.measureText('A').emHeightAscent", "37.5");
-    _assertSame(ctx.measureText('A').emHeightDescent, 12.5, "ctx.measureText('A').emHeightDescent", "12.5");
-    _assertSame(ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent, 50, "ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent", "50");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+document.fonts.add(f);
+document.fonts.ready.then(() => {
+     step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(ctx.measureText('A').emHeightAscent, 37.5, "ctx.measureText('A').emHeightAscent", "37.5");
+        _assertSame(ctx.measureText('A').emHeightDescent, 12.5, "ctx.measureText('A').emHeightDescent", "12.5");
+        _assertSame(ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent, 50, "ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent", "50");
 
-    _assertSame(ctx.measureText('ABCD').emHeightAscent, 37.5, "ctx.measureText('ABCD').emHeightAscent", "37.5");
-    _assertSame(ctx.measureText('ABCD').emHeightDescent, 12.5, "ctx.measureText('ABCD').emHeightDescent", "12.5");
-    _assertSame(ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent, 50, "ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent", "50");
-}), 500);
+        _assertSame(ctx.measureText('ABCD').emHeightAscent, 37.5, "ctx.measureText('ABCD').emHeightAscent", "37.5");
+        _assertSame(ctx.measureText('ABCD').emHeightDescent, 12.5, "ctx.measureText('ABCD').emHeightDescent", "12.5");
+        _assertSame(ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent, 50, "ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent", "50");
+    }), 500);
+});
 
 
 });
diff --git a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.html b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.html
index 1c9bfc492c1..cbe98ba7628 100644
--- a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.html
+++ b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.fontBoundingBox.html
@@ -27,16 +27,20 @@ var t = async_test("Testing fontBoundingBox");
 _addTest(function(canvas, ctx) {
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    ctx.direction = 'ltr';
-    ctx.align = 'left'
-    _assertSame(ctx.measureText('A').fontBoundingBoxAscent, 85, "ctx.measureText('A').fontBoundingBoxAscent", "85");
-    _assertSame(ctx.measureText('A').fontBoundingBoxDescent, 39, "ctx.measureText('A').fontBoundingBoxDescent", "39");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+document.fonts.add(f);
+document.fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(ctx.measureText('A').fontBoundingBoxAscent, 85, "ctx.measureText('A').fontBoundingBoxAscent", "85");
+        _assertSame(ctx.measureText('A').fontBoundingBoxDescent, 39, "ctx.measureText('A').fontBoundingBoxDescent", "39");
 
-    _assertSame(ctx.measureText('ABCD').fontBoundingBoxAscent, 85, "ctx.measureText('ABCD').fontBoundingBoxAscent", "85");
-    _assertSame(ctx.measureText('ABCD').fontBoundingBoxDescent, 39, "ctx.measureText('ABCD').fontBoundingBoxDescent", "39");
-}), 500);
+        _assertSame(ctx.measureText('ABCD').fontBoundingBoxAscent, 85, "ctx.measureText('ABCD').fontBoundingBoxAscent", "85");
+        _assertSame(ctx.measureText('ABCD').fontBoundingBoxDescent, 39, "ctx.measureText('ABCD').fontBoundingBoxDescent", "39");
+    }), 500);
+});
 
 
 });
diff --git a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html
index 1cfe16438f4..5a5a57adda7 100644
--- a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html
+++ b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.basic.html
@@ -14,7 +14,7 @@
 <body class="show_output">
 
 <h1>2d.text.measure.width.basic</h1>
-<p class="desc"></p>
+<p class="desc">The width of character is same as font used</p>
 
 
 <span style="font-family: CanvasTest; position: absolute; visibility: hidden">A</span>
@@ -23,19 +23,23 @@
 
 <ul id="d"></ul>
 <script>
-var t = async_test("");
+var t = async_test("The width of character is same as font used");
 _addTest(function(canvas, ctx) {
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText('A').width, 50, "ctx.measureText('A').width", "50");
-    _assertSame(ctx.measureText('AA').width, 100, "ctx.measureText('AA').width", "100");
-    _assertSame(ctx.measureText('ABCD').width, 200, "ctx.measureText('ABCD').width", "200");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+document.fonts.add(f);
+document.fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText('A').width, 50, "ctx.measureText('A').width", "50");
+        _assertSame(ctx.measureText('AA').width, 100, "ctx.measureText('AA').width", "100");
+        _assertSame(ctx.measureText('ABCD').width, 200, "ctx.measureText('ABCD').width", "200");
 
-    ctx.font = '100px CanvasTest';
-    _assertSame(ctx.measureText('A').width, 100, "ctx.measureText('A').width", "100");
-}), 500);
+        ctx.font = '100px CanvasTest';
+        _assertSame(ctx.measureText('A').width, 100, "ctx.measureText('A').width", "100");
+    }), 500);
+});
 
 
 });
diff --git a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.empty.html b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.empty.html
index add8ce5ba5f..70f0f07a9cf 100644
--- a/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.empty.html
+++ b/tests/wpt/web-platform-tests/2dcontext/drawing-text-to-the-canvas/2d.text.measure.width.empty.html
@@ -27,10 +27,14 @@ var t = async_test("The empty string has zero width");
 _addTest(function(canvas, ctx) {
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText("").width, 0, "ctx.measureText(\"\").width", "0");
-}), 500);
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+document.fonts.add(f);
+document.fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText("").width, 0, "ctx.measureText(\"\").width", "0");
+    }), 500);
+});
 
 
 });
diff --git a/tests/wpt/web-platform-tests/2dcontext/text-styles/2d.text.measure.width.space.html b/tests/wpt/web-platform-tests/2dcontext/text-styles/2d.text.measure.width.space.html
index d6e37a19cb6..82a6118fee9 100644
--- a/tests/wpt/web-platform-tests/2dcontext/text-styles/2d.text.measure.width.space.html
+++ b/tests/wpt/web-platform-tests/2dcontext/text-styles/2d.text.measure.width.space.html
@@ -27,16 +27,20 @@ var t = async_test("Space characters are converted to U+0020 and collapsed (per
 _addTest(function(canvas, ctx) {
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText('A B').width, 150, "ctx.measureText('A B').width", "150");
-    _assertSame(ctx.measureText('A  B').width, 150, "ctx.measureText('A  B').width", "150");
-    _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 150, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "150");
-    _assert(ctx.measureText('A \x0b B').width >= 200, "ctx.measureText('A \\x0b B').width >= 200");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+document.fonts.add(f);
+document.fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText('A B').width, 150, "ctx.measureText('A B').width", "150");
+        _assertSame(ctx.measureText('A  B').width, 150, "ctx.measureText('A  B').width", "150");
+        _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 150, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "150");
+        _assert(ctx.measureText('A \x0b B').width >= 200, "ctx.measureText('A \\x0b B').width >= 200");
 
-    _assertSame(ctx.measureText(' AB').width, 100, "ctx.measureText(' AB').width", "100");
-    _assertSame(ctx.measureText('AB ').width, 100, "ctx.measureText('AB ').width", "100");
-}), 500);
+        _assertSame(ctx.measureText(' AB').width, 100, "ctx.measureText(' AB').width", "100");
+        _assertSame(ctx.measureText('AB ').width, 100, "ctx.measureText('AB ').width", "100");
+    }), 500);
+});
 
 
 });
diff --git a/tests/wpt/web-platform-tests/2dcontext/tools/tests2dtext.yaml b/tests/wpt/web-platform-tests/2dcontext/tools/tests2dtext.yaml
index f89d6d48a4f..0ee476d755d 100644
--- a/tests/wpt/web-platform-tests/2dcontext/tools/tests2dtext.yaml
+++ b/tests/wpt/web-platform-tests/2dcontext/tools/tests2dtext.yaml
@@ -967,24 +967,27 @@
   expected: green
 
 
-
-
 - name: 2d.text.measure.width.basic
+  desc: The width of character is same as font used
   testing:
     - 2d.text.measure
   fonts:
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        @assert ctx.measureText('A').width === 50;
-        @assert ctx.measureText('AA').width === 100;
-        @assert ctx.measureText('ABCD').width === 200;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText('A').width === 50;
+            @assert ctx.measureText('AA').width === 100;
+            @assert ctx.measureText('ABCD').width === 200;
 
-        ctx.font = '100px CanvasTest';
-        @assert ctx.measureText('A').width === 100;
-    }), 500);
+            ctx.font = '100px CanvasTest';
+            @assert ctx.measureText('A').width === 100;
+        }), 500);
+    });
 
 - name: 2d.text.measure.width.empty
   desc: The empty string has zero width
@@ -994,10 +997,14 @@
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        @assert ctx.measureText("").width === 0;
-    }), 500);
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText("").width === 0;
+        }), 500);
+    });
 
 - name: 2d.text.measure.width.space
   desc: Space characters are converted to U+0020 and collapsed (per CSS)
@@ -1007,16 +1014,20 @@
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        @assert ctx.measureText('A B').width === 150;
-        @assert ctx.measureText('A  B').width === 150; @moz-todo
-        @assert ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width === 150; @moz-todo
-        @assert ctx.measureText('A \x0b B').width >= 200;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText('A B').width === 150;
+            @assert ctx.measureText('A  B').width === 150; @moz-todo
+            @assert ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width === 150; @moz-todo
+            @assert ctx.measureText('A \x0b B').width >= 200;
 
-        @assert ctx.measureText(' AB').width === 100; @moz-todo
-        @assert ctx.measureText('AB ').width === 100; @moz-todo
-    }), 500);
+            @assert ctx.measureText(' AB').width === 100; @moz-todo
+            @assert ctx.measureText('AB ').width === 100; @moz-todo
+        }), 500);
+    });
 
 - name: 2d.text.measure.advances
   desc: Testing width advances
@@ -1026,25 +1037,29 @@
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        ctx.direction = 'ltr';
-        ctx.align = 'left'
-        // Some platforms may return '-0'.
-        @assert Math.abs(ctx.measureText('Hello').advances[0]) === 0;
-        // Different platforms may render text slightly different.
-        @assert ctx.measureText('Hello').advances[1] >= 36;
-        @assert ctx.measureText('Hello').advances[2] >= 58;
-        @assert ctx.measureText('Hello').advances[3] >= 70;
-        @assert ctx.measureText('Hello').advances[4] >= 80;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            // Some platforms may return '-0'.
+            @assert Math.abs(ctx.measureText('Hello').advances[0]) === 0;
+            // Different platforms may render text slightly different.
+            @assert ctx.measureText('Hello').advances[1] >= 36;
+            @assert ctx.measureText('Hello').advances[2] >= 58;
+            @assert ctx.measureText('Hello').advances[3] >= 70;
+            @assert ctx.measureText('Hello').advances[4] >= 80;
 
-        var tm = ctx.measureText('Hello');
-        @assert ctx.measureText('Hello').advances[0] === tm.advances[0];
-        @assert ctx.measureText('Hello').advances[1] === tm.advances[1];
-        @assert ctx.measureText('Hello').advances[2] === tm.advances[2];
-        @assert ctx.measureText('Hello').advances[3] === tm.advances[3];
-        @assert ctx.measureText('Hello').advances[4] === tm.advances[4];
-    }), 500);
+            var tm = ctx.measureText('Hello');
+            @assert ctx.measureText('Hello').advances[0] === tm.advances[0];
+            @assert ctx.measureText('Hello').advances[1] === tm.advances[1];
+            @assert ctx.measureText('Hello').advances[2] === tm.advances[2];
+            @assert ctx.measureText('Hello').advances[3] === tm.advances[3];
+            @assert ctx.measureText('Hello').advances[4] === tm.advances[4];
+        }), 500);
+    });
 
 - name: 2d.text.measure.actualBoundingBox
   desc: Testing actualBoundingBox
@@ -1054,23 +1069,27 @@
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        ctx.direction = 'ltr';
-        ctx.align = 'left'
-        ctx.baseline = 'alphabetic'
-        // Some platforms may return '-0'.
-        @assert Math.abs(ctx.measureText('A').actualBoundingBoxLeft) === 0;
-        // Different platforms may render text slightly different.
-        @assert ctx.measureText('A').actualBoundingBoxRight >= 50;
-        @assert ctx.measureText('A').actualBoundingBoxAscent >= 35;
-        @assert Math.abs(ctx.measureText('A').actualBoundingBoxDescent) === 0;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            ctx.baseline = 'alphabetic'
+            // Some platforms may return '-0'.
+            @assert Math.abs(ctx.measureText('A').actualBoundingBoxLeft) === 0;
+            // Different platforms may render text slightly different.
+            @assert ctx.measureText('A').actualBoundingBoxRight >= 50;
+            @assert ctx.measureText('A').actualBoundingBoxAscent >= 35;
+            @assert Math.abs(ctx.measureText('A').actualBoundingBoxDescent) === 0;
 
-        @assert Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft) === 0;
-        @assert ctx.measureText('ABCD').actualBoundingBoxRight >= 200;
-        @assert ctx.measureText('ABCD').actualBoundingBoxAscent >= 85;
-        @assert ctx.measureText('ABCD').actualBoundingBoxDescent >= 37;
-    }), 500);
+            @assert Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft) === 0;
+            @assert ctx.measureText('ABCD').actualBoundingBoxRight >= 200;
+            @assert ctx.measureText('ABCD').actualBoundingBoxAscent >= 85;
+            @assert ctx.measureText('ABCD').actualBoundingBoxDescent >= 37;
+        }), 500);
+    });
 
 - name: 2d.text.measure.fontBoundingBox
   desc: Testing fontBoundingBox
@@ -1080,16 +1099,20 @@
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        ctx.direction = 'ltr';
-        ctx.align = 'left'
-        @assert ctx.measureText('A').fontBoundingBoxAscent === 85;
-        @assert ctx.measureText('A').fontBoundingBoxDescent === 39;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert ctx.measureText('A').fontBoundingBoxAscent === 85;
+            @assert ctx.measureText('A').fontBoundingBoxDescent === 39;
 
-        @assert ctx.measureText('ABCD').fontBoundingBoxAscent === 85;
-        @assert ctx.measureText('ABCD').fontBoundingBoxDescent === 39;
-    }), 500);
+            @assert ctx.measureText('ABCD').fontBoundingBoxAscent === 85;
+            @assert ctx.measureText('ABCD').fontBoundingBoxDescent === 39;
+        }), 500);
+    });
 
 - name: 2d.text.measure.emHeights
   desc: Testing emHeights
@@ -1099,18 +1122,22 @@
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        ctx.direction = 'ltr';
-        ctx.align = 'left'
-        @assert ctx.measureText('A').emHeightAscent === 37.5;
-        @assert ctx.measureText('A').emHeightDescent === 12.5;
-        @assert ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent === 50;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+         step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert ctx.measureText('A').emHeightAscent === 37.5;
+            @assert ctx.measureText('A').emHeightDescent === 12.5;
+            @assert ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent === 50;
 
-        @assert ctx.measureText('ABCD').emHeightAscent === 37.5;
-        @assert ctx.measureText('ABCD').emHeightDescent === 12.5;
-        @assert ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent === 50;
-    }), 500);
+            @assert ctx.measureText('ABCD').emHeightAscent === 37.5;
+            @assert ctx.measureText('ABCD').emHeightDescent === 12.5;
+            @assert ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent === 50;
+        }), 500);
+    });
 
 - name: 2d.text.measure.baselines
   desc: Testing baselines
@@ -1120,17 +1147,21 @@
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        ctx.direction = 'ltr';
-        ctx.align = 'left'
-        @assert Math.abs(ctx.measureText('A').getBaselines().alphabetic) === 0;
-        @assert ctx.measureText('A').getBaselines().ideographic === -39;
-        @assert ctx.measureText('A').getBaselines().hanging === 68;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    document.fonts.add(f);
+    document.fonts.ready.then(() => {
+         step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert Math.abs(ctx.measureText('A').getBaselines().alphabetic) === 0;
+            @assert ctx.measureText('A').getBaselines().ideographic === -39;
+            @assert ctx.measureText('A').getBaselines().hanging === 68;
 
-        @assert Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic) === 0;
-        @assert ctx.measureText('ABCD').getBaselines().ideographic === -39;
-        @assert ctx.measureText('ABCD').getBaselines().hanging === 68;
-    }), 500);
+            @assert Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic) === 0;
+            @assert ctx.measureText('ABCD').getBaselines().ideographic === -39;
+            @assert ctx.measureText('ABCD').getBaselines().hanging === 68;
+        }), 500);
+    });
 
 # TODO: shadows, alpha, composite, clip
diff --git a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative-ref.html b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative-ref.html
index 26d76a1661b..f98f3ee3e86 100644
--- a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative-ref.html
+++ b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative-ref.html
@@ -1,20 +1,22 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title>math-script-level and font-max-size (reference)</title>
+    <title>math-script-level (reference)</title>
     <meta charset="utf-8">
     <style>
       .container {
           /* Ahem font does not have a MATH table so the font-size scale factor
              is always 0.71^{computed - inherited math script level} */
-          font: 100px/1 Ahem;
+          font: 12px/1 Ahem;
       }
     </style>
   </head>
   <body>
-    <p>Test passes if you see a square of side 355px.</p>
+    <p>Test passes if you see a square of side 12px.</p>
     <div class="container">
-      <div style="font-size: 355px">X</div>
+      <div>
+        <div>X</div>
+      </div>
     </div>
   </body>
 </html>
diff --git a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative.html b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative.html
index 151e1552bf2..951bc84417b 100644
--- a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative.html
+++ b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-001.tentative.html
@@ -1,23 +1,25 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title>math-script-level and font-max-size</title>
+    <title>math-script-level clamping</title>
     <meta charset="utf-8">
-    <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/3746">
-    <meta name="assert" content="The clamping of font-size implied by font-min-size and font-max-size must apply after the change due to math-script-level.">
+    <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/3739">
+    <meta name="assert" content="Clamping due to browser's min font size only affects the used size.">
     <link rel="match" href="math-script-level-font-size-clamping-001.tentative-ref.html">
     <style>
       .container {
           /* Ahem font does not have a MATH table so the font-size scale factor
              is always 0.71^{computed - inherited math script level} */
-          font: 100px/1 Ahem;
+          font: 12px/1 Ahem;
       }
     </style>
   </head>
   <body>
-    <p>Test passes if you see a square of side 355px.</p>
-    <div class="container" style="font-size: 500px">
-      <div style="math-script-level: add(1); font-max-size: 480px">X</div>
+    <p>Test passes if you see a square of side 12px.</p>
+    <div class="container"><!-- Initial size is 12px. -->
+      <div style="math-script-level: add(8);"><!-- Size is 12*.71^8 = 0.7749042374949131 < 1px. -->
+        <div style="math-script-level: add(-8);">X</div><!-- back to 12px. -->
+      </div>
     </div>
   </body>
 </html>
diff --git a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative-ref.html b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative-ref.html
deleted file mode 100644
index 4f695e05d1c..00000000000
--- a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative-ref.html
+++ /dev/null
@@ -1,20 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>math-script-level and font-min-size (reference)</title>
-    <meta charset="utf-8">
-    <style>
-      .container {
-          /* Ahem font does not have a MATH table so the font-size scale factor
-             is always 0.71^{computed - inherited math script level} */
-          font: 100px/1 Ahem;
-      }
-    </style>
-  </head>
-  <body>
-    <p>Test passes if you see a square of side 520px.</p>
-    <div class="container">
-      <div style="font-size: 520px">X</div>
-    </div>
-  </body>
-</html>
diff --git a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative.html b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative.html
deleted file mode 100644
index 3c5416a86d3..00000000000
--- a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-002.tentative.html
+++ /dev/null
@@ -1,23 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>math-script-level ; font-min-size</title>
-    <meta charset="utf-8">
-    <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/3746">
-    <meta name="assert" content="The clamping of font-size implied by font-min-size and font-max-size must apply after the change due to math-script-level.">
-    <link rel="match" href="math-script-level-font-size-clamping-002.tentative-ref.html">
-    <style>
-      .container {
-          /* Ahem font does not have a MATH table so the font-size scale factor
-             is always 0.71^{computed - inherited math script level} */
-          font: 100px/1 Ahem;
-      }
-    </style>
-  </head>
-  <body>
-    <p>Test passes if you see a square of side 520px.</p>
-    <div class="container" style="font-size: 500px">
-      <div style="math-script-level: add(1); font-min-size: 520px;">X</div>
-    </div>
-  </body>
-</html>
diff --git a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative-ref.html b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative-ref.html
deleted file mode 100644
index d13d90c2b54..00000000000
--- a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative-ref.html
+++ /dev/null
@@ -1,24 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>math-script-level and font-max-size (reference)</title>
-    <meta charset="utf-8">
-    <style>
-      .container {
-          /* Ahem font does not have a MATH table so the font-size scale factor
-             is always 0.71^{computed - inherited math script level} */
-          font: 71px/1 Ahem;
-      }
-    </style>
-  </head>
-  <body>
-    <p>Test passes if you see a square of side 71px.</p>
-    <div class="container">
-      <div>
-        <div>
-          <div>X</div>
-        </div>
-      </div>
-    </div>
-  </body>
-</html>
diff --git a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative.html b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative.html
deleted file mode 100644
index abca2487f4a..00000000000
--- a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-003.tentative.html
+++ /dev/null
@@ -1,27 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>math-script-level and font-max-size</title>
-    <meta charset="utf-8">
-    <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/3739">
-    <meta name="assert" content="font-max-size only affects the used size.">
-    <link rel="match" href="math-script-level-font-size-clamping-003.tentative-ref.html">
-    <style>
-      .container {
-          /* Ahem font does not have a MATH table so the font-size scale factor
-             is always 0.71^{computed - inherited math script level} */
-          font: 71px/1 Ahem;
-      }
-    </style>
-  </head>
-  <body>
-    <p>Test passes if you see a square of side 71px.</p>
-    <div class="container"><!-- Initial size is 71px. -->
-      <div style="math-script-level: add(-1);"><!-- Size is 71/.71 = 100px. -->
-        <div style="font-max-size: 90px"><!-- This only affects used size. -->
-          <div style="math-script-level: add(1);">X</div><!-- back to 71px. -->
-        </div>
-      </div>
-    </div>
-  </body>
-</html>
diff --git a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative-ref.html b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative-ref.html
deleted file mode 100644
index de0dab2e184..00000000000
--- a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative-ref.html
+++ /dev/null
@@ -1,24 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>math-script-level and font-min-size (reference)</title>
-    <meta charset="utf-8">
-    <style>
-      .container {
-          /* Ahem font does not have a MATH table so the font-size scale factor
-             is always 0.71^{computed - inherited math script level} */
-          font: 100px/1 Ahem;
-      }
-    </style>
-  </head>
-  <body>
-    <p>Test passes if you see a square of side 100px.</p>
-    <div class="container">
-      <div>
-        <div>
-          <div>X</div>
-        </div>
-      </div>
-    </div>
-  </body>
-</html>
diff --git a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative.html b/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative.html
deleted file mode 100644
index 350f086c466..00000000000
--- a/tests/wpt/web-platform-tests/css/css-fonts/math-script-level-and-math-style/math-script-level-font-size-clamping-004.tentative.html
+++ /dev/null
@@ -1,27 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>math-script-level and font-min-size</title>
-    <meta charset="utf-8">
-    <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/3739">
-    <meta name="assert" content="font-min-size only affects the used size.">
-    <link rel="match" href="math-script-level-font-size-clamping-004.tentative-ref.html">
-    <style>
-      .container {
-          /* Ahem font does not have a MATH table so the font-size scale factor
-             is always 0.71^{computed - inherited math script level} */
-          font: 100px/1 Ahem;
-      }
-    </style>
-  </head>
-  <body>
-    <p>Test passes if you see a square of side 100px.</p>
-    <div class="container"><!-- Initial size is 100px. -->
-      <div style="math-script-level: add(1);"><!-- Size is 100*.71 = 71px. -->
-        <div style="font-min-size: 90px"><!-- This only affects used size. -->
-          <div style="math-script-level: add(-1);">X</div><!-- back to 100px. -->
-        </div>
-      </div>
-    </div>
-  </body>
-</html>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/animation/grid-template-columns-interpolation.html b/tests/wpt/web-platform-tests/css/css-grid/animation/grid-template-columns-interpolation.html
index 4adba6de3fe..e42a4243543 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/animation/grid-template-columns-interpolation.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/animation/grid-template-columns-interpolation.html
@@ -7,7 +7,7 @@
     <meta name="assert" content="grid-template-columns supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/css-grid/animation/grid-template-rows-interpolation.html b/tests/wpt/web-platform-tests/css/css-grid/animation/grid-template-rows-interpolation.html
index 42152bcdf20..3c650395df0 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/animation/grid-template-rows-interpolation.html
+++ b/tests/wpt/web-platform-tests/css/css-grid/animation/grid-template-rows-interpolation.html
@@ -7,7 +7,7 @@
     <meta name="assert" content="grid-template-rows supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/css-position/position-absolute-crash-chrome-008.html b/tests/wpt/web-platform-tests/css/css-position/position-absolute-crash-chrome-008.html
new file mode 100644
index 00000000000..3d1c90930cf
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-position/position-absolute-crash-chrome-008.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<link rel="author" href="mailto:atotic@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="help" href="https://crbug.com/967977">
+<meta name="assert" content="zero width inline abspos container with borders does not cause a crash">
+<style>
+</style>
+<span style="border-bottom:1px solid; filter:blur(2px);">
+  <div style="position:absolute"></div>
+</span>
+<script>
+document.body.offsetTop;
+ test(() => {
+ }, 'test passes if it does not crash');
+</script>
+
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-001.html b/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-001.html
new file mode 100644
index 00000000000..b4a4b3f4bba
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-001.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>filter interpolation</title>
+    <link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+    <meta name="assert" content="Matching lists interpolate.">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
+    <style>
+      body {
+        color: blue;
+      }
+    </style>
+  </head>
+  <body>
+    <script>
+      'use strict';
+
+      test_interpolation({
+        property: 'filter',
+        from: 'hue-rotate(0deg) blur(6px)',
+        to: 'hue-rotate(180deg) blur(10px)'
+      }, [
+        {at: -0.5, expect: 'hue-rotate(-90deg) blur(4px)'},
+        {at: 0, expect: 'hue-rotate(0deg) blur(6px)'},
+        {at: 0.25, expect: 'hue-rotate(45deg) blur(7px)'},
+        {at: 0.5, expect: 'hue-rotate(90deg) blur(8px)'},
+        {at: 1, expect: 'hue-rotate(180deg) blur(10px)'},
+        {at: 1.5, expect: 'hue-rotate(270deg) blur(12px)'}
+      ]);
+
+      // Matching lists with differing units:
+      test_interpolation({
+        property: 'filter',
+        from: 'hue-rotate(80deg) blur(6mm)',
+        to: 'hue-rotate(100grad) blur(1cm)'
+      }, [
+        {at: -0.5, expect: 'hue-rotate(75deg) blur(4mm)'},
+        {at: 0, expect: 'hue-rotate(80deg) blur(6mm)'},
+        {at: 0.25, expect: 'hue-rotate(82.5deg) blur(7mm)'},
+        {at: 0.5, expect: 'hue-rotate(85deg) blur(8mm)'},
+        {at: 1, expect: 'hue-rotate(90deg) blur(10mm)'},
+        {at: 1.5, expect: 'hue-rotate(95deg) blur(12mm)'}
+      ]);
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-002.html b/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-002.html
new file mode 100644
index 00000000000..1b66c2751d4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-002.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>filter interpolation</title>
+    <link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+    <meta name="assert" content="Partially matching lists interpolate.">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
+    <style>
+      body {
+        color: blue;
+      }
+    </style>
+  </head>
+  <body>
+    <script>
+      'use strict';
+
+      test_interpolation({
+        property: 'filter',
+        from: 'none',
+        to: 'opacity(0.5) hue-rotate(180deg)',
+      }, [
+        {at: -0.5, expect: 'opacity(1) hue-rotate(-90deg)'},
+        {at: 0.25, expect: 'opacity(0.875) hue-rotate(45deg)'},
+        {at: 0.5, expect: 'opacity(0.75) hue-rotate(90deg)'},
+        {at: 1, expect: 'opacity(0.5) hue-rotate(180deg)'},
+        {at: 1.5, expect: 'opacity(0.25) hue-rotate(270deg)'},
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'blur(6px)',
+        to: 'blur(10px) hue-rotate(180deg)'
+      }, [
+        {at: -0.5, expect: 'blur(4px) hue-rotate(-90deg)'},
+        {at: 0.25, expect: 'blur(7px) hue-rotate(45deg)'},
+        {at: 0.5, expect: 'blur(8px) hue-rotate(90deg)'},
+        {at: 1, expect: 'blur(10px) hue-rotate(180deg)'},
+        {at: 1.5, expect: 'blur(12px) hue-rotate(270deg)'},
+      ]);
+
+      // Mismatched lists:
+      test_no_interpolation({
+        property: 'filter',
+        from: 'grayscale(0) blur(0px)',
+        to: 'blur(10px)'
+      });
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-003.html b/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-003.html
new file mode 100644
index 00000000000..5ca1229e297
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-003.html
@@ -0,0 +1,138 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>filter interpolation</title>
+    <link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+    <meta name="assert" content="lacuna matches spec.">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
+    <style>
+      body {
+        color: blue;
+      }
+    </style>
+  </head>
+  <body>
+    <script>
+      'use strict';
+
+      test_interpolation({
+        property: 'filter',
+        from: 'none', // lacuna is 0px
+        to: 'blur(10px)'
+      }, [
+        {at: -1, expect: 'blur(0px)'}, // Negative values are not allowed.
+        {at: 0.5, expect: 'blur(5px)'},
+        {at: 1, expect: 'blur(10px)'},
+        {at: 1.5, expect: 'blur(15px)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'brightness(0)',
+        to: 'none' // lacuna is 1
+      }, [
+        {at: -1, expect: 'brightness(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'brightness(0)'},
+        {at: 0.5, expect: 'brightness(0.5)'},
+        {at: 1.5, expect: 'brightness(1.5)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'contrast(0)',
+        to: 'none' // lacuna is 1
+      }, [
+        {at: -1, expect: 'contrast(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'contrast(0)'},
+        {at: 0.5, expect: 'contrast(0.5)'},
+        {at: 1.5, expect: 'contrast(1.5)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'none', // lacuna is drop-shadow(0px 0px 0px transparent)
+        to: 'drop-shadow(20px 10px green)'
+      }, [
+        {at: -1, expect: 'drop-shadow(-20px -10px transparent)'},
+        {at: 0.5, expect: 'drop-shadow(10px 5px rgba(0, 128, 0, 0.5))'},
+        {at: 1, expect: 'drop-shadow(20px 10px green)'},
+        {at: 1.5, expect: 'drop-shadow(30px 15px #00C000)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'none', // lacuna is 0
+        to: 'grayscale(1)'
+      }, [
+        {at: -1, expect: 'grayscale(0)'}, // Negative values are not allowed.
+        {at: 0.5, expect: 'grayscale(0.5)'},
+        {at: 1, expect: 'grayscale(1)'},
+        {at: 1.5, expect: 'grayscale(1)'} // Should clamp values to 1.
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'none', // lacuna is 0deg
+        to: 'hue-rotate(360deg)'
+      }, [
+        {at: -1, expect: 'hue-rotate(-360deg)'},
+        {at: 0.5, expect: 'hue-rotate(180deg)'},
+        {at: 1, expect: 'hue-rotate(360deg)'},
+        {at: 1.5, expect: 'hue-rotate(540deg)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'none', // lacuna is 0
+        to: 'invert(1)'
+      }, [
+        {at: -1, expect: 'invert(0)'}, // Negative values are not allowed.
+        {at: 0.5, expect: 'invert(0.5)'},
+        {at: 1, expect: 'invert(1)'},
+        {at: 1.5, expect: 'invert(1)'} // Should clamp values to 1.
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'opacity(0)',
+        to: 'none' // lacuna is 1
+      }, [
+        {at: -1, expect: 'opacity(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'opacity(0)'},
+        {at: 0.5, expect: 'opacity(0.5)'},
+        {at: 1.5, expect: 'opacity(1)'} // Should clamp values to 1.
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'saturate(0)',
+        to: 'none' // lacuna is 1
+      }, [
+        {at: -1, expect: 'saturate(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'saturate(0)'},
+        {at: 0.5, expect: 'saturate(0.5)'},
+        {at: 1.5, expect: 'saturate(1.5)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'none', // lacuna is 0
+        to: 'sepia(1)'
+      }, [
+        {at: -1, expect: 'sepia(0)'}, // Negative values are not allowed.
+        {at: 0.5, expect: 'sepia(0.5)'},
+        {at: 1, expect: 'sepia(1)'},
+        {at: 1.5, expect: 'sepia(1)'} // Should clamp values to 1.
+      ]);
+
+      test_no_interpolation({
+        property: 'filter',
+        from: 'url("#svgfilter")',
+        to: 'none', // lacuna is not defined
+      });
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-004.html b/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-004.html
new file mode 100644
index 00000000000..63dd17361a3
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/filter-effects/animation/filter-interpolation-004.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>filter interpolation</title>
+    <link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
+    <meta name="assert" content="Default value when omitted matches spec.">
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
+    <style>
+      body {
+        color: blue;
+      }
+    </style>
+  </head>
+  <body>
+    <script>
+      'use strict';
+
+      test_interpolation({
+        property: 'filter',
+        from: 'blur()', // Default value when omitted is 0px.
+        to: 'blur(10px)'
+      }, [
+        {at: -1, expect: 'blur(0px)'}, // Negative values are not allowed.
+        {at: 0, expect: 'blur()'},
+        {at: 0.5, expect: 'blur(5px)'},
+        {at: 1, expect: 'blur(10px)'},
+        {at: 1.5, expect: 'blur(15px)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'brightness(0)',
+        to: 'brightness()' // Default value when omitted is 1.
+      }, [
+        {at: -1, expect: 'brightness(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'brightness(0)'},
+        {at: 0.5, expect: 'brightness(0.5)'},
+        {at: 1, expect: 'brightness()'},
+        {at: 1.5, expect: 'brightness(1.5)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'contrast(0)',
+        to: 'contrast()' // Default value when omitted is 1.
+      }, [
+        {at: -1, expect: 'contrast(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'contrast(0)'},
+        {at: 0.5, expect: 'contrast(0.5)'},
+        {at: 1, expect: 'contrast()'},
+        {at: 1.5, expect: 'contrast(1.5)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'drop-shadow(0px 0px)', // The default value for omitted values is missing length values set to 0 and the missing used color is taken from the color property.
+        to: 'drop-shadow(20px 10px 30px green)'
+      }, [
+        {at: -1, expect: 'drop-shadow(-20px -10px blue)'},
+        {at: 0, expect: 'drop-shadow(0px 0px blue)'},
+        {at: 0.5, expect: 'drop-shadow(10px 5px 15px rgb(0, 64, 128))'},
+        {at: 1, expect: 'drop-shadow(20px 10px 30px green)'},
+        {at: 1.5, expect: 'drop-shadow(30px 15px 45px rgb(0, 192, 0))'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'grayscale(0)',
+        to: 'grayscale()' // Default value when omitted is 1.
+      }, [
+        {at: -1, expect: 'grayscale(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'grayscale(0)'},
+        {at: 0.5, expect: 'grayscale(0.5)'},
+        {at: 1, expect: 'grayscale()'},
+        {at: 1.5, expect: 'grayscale(1)'} // Should clamp values to 1.
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'hue-rotate()', // Default value when omitted is 0deg.
+        to: 'hue-rotate(360deg)'
+      }, [
+        {at: -1, expect: 'hue-rotate(-360deg)'},
+        {at: 0, expect: 'hue-rotate()'},
+        {at: 0.5, expect: 'hue-rotate(180deg)'},
+        {at: 1, expect: 'hue-rotate(360deg)'},
+        {at: 1.5, expect: 'hue-rotate(540deg)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'invert(0)',
+        to: 'invert()' // Default value when omitted is 1.
+      }, [
+        {at: -1, expect: 'invert(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'invert(0)'},
+        {at: 0.5, expect: 'invert(0.5)'},
+        {at: 1, expect: 'invert()'},
+        {at: 1.5, expect: 'invert(1)'} // Should clamp values to 1.
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'opacity(0)',
+        to: 'opacity()' // Default value when omitted is 1.
+      }, [
+        {at: -1, expect: 'opacity(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'opacity(0)'},
+        {at: 0.5, expect: 'opacity(0.5)'},
+        {at: 1, expect: 'opacity()'},
+        {at: 1.5, expect: 'opacity(1)'} // Should clamp values to 1.
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'saturate(0)',
+        to: 'saturate()' // Default value when omitted is 1.
+      }, [
+        {at: -1, expect: 'saturate(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'saturate(0)'},
+        {at: 0.5, expect: 'saturate(0.5)'},
+        {at: 1, expect: 'saturate()'},
+        {at: 1.5, expect: 'saturate(1.5)'}
+      ]);
+
+      test_interpolation({
+        property: 'filter',
+        from: 'sepia(0)',
+        to: 'sepia()' // Default value when omitted is 1.
+      }, [
+        {at: -1, expect: 'sepia(0)'}, // Negative values are not allowed.
+        {at: 0, expect: 'sepia(0)'},
+        {at: 0.5, expect: 'sepia(0.5)'},
+        {at: 1, expect: 'sepia()'},
+        {at: 1.5, expect: 'sepia(1)'} // Should clamp values to 1.
+      ]);
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/parsing/backdrop-filter-computed.html b/tests/wpt/web-platform-tests/css/filter-effects/parsing/backdrop-filter-computed.html
index 96de7b941ba..d947e2c8711 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/parsing/backdrop-filter-computed.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/parsing/backdrop-filter-computed.html
@@ -25,7 +25,7 @@ test_computed_value("backdrop-filter", "blur()", "blur(0px)");
 
 test_computed_value("backdrop-filter", "brightness(0)");
 test_computed_value("backdrop-filter", "brightness(300%)", "brightness(3)");
-test_computed_value("backdrop-filter", "brightness()", "brightness(0)");
+test_computed_value("backdrop-filter", "brightness()", "brightness(1)");
 
 test_computed_value("backdrop-filter", "contrast(0)");
 test_computed_value("backdrop-filter", "contrast(300%)", "contrast(3)");
@@ -42,7 +42,7 @@ test_computed_value("backdrop-filter", "hue-rotate()", "hue-rotate(0deg)");
 
 test_computed_value("backdrop-filter", "invert(0)");
 test_computed_value("backdrop-filter", "invert(100%)", "invert(1)");
-test_computed_value("backdrop-filter", "invert()", "invert(0)");
+test_computed_value("backdrop-filter", "invert()", "invert(1)");
 
 test_computed_value("backdrop-filter", "opacity(0)");
 test_computed_value("backdrop-filter", "opacity(100%)", "opacity(1)");
diff --git a/tests/wpt/web-platform-tests/css/filter-effects/parsing/filter-computed.html b/tests/wpt/web-platform-tests/css/filter-effects/parsing/filter-computed.html
index 0c9bb9e1963..2e7f3b478b5 100644
--- a/tests/wpt/web-platform-tests/css/filter-effects/parsing/filter-computed.html
+++ b/tests/wpt/web-platform-tests/css/filter-effects/parsing/filter-computed.html
@@ -35,6 +35,7 @@ test_computed_value("filter", "drop-shadow(1px 2px)", "drop-shadow(rgb(0, 255, 0
 test_computed_value("filter", "drop-shadow(rgb(4, 5, 6) 1px 2px 0px)");
 
 test_computed_value("filter", "grayscale(50%)", "grayscale(0.5)");
+test_computed_value("filter", "grayscale(2)", "grayscale(1)");
 test_computed_value("filter", "grayscale()", "grayscale(1)");
 
 test_computed_value("filter", "hue-rotate(90deg)");
@@ -42,10 +43,12 @@ test_computed_value("filter", "hue-rotate()", "hue-rotate(0deg)");
 
 test_computed_value("filter", "invert(0)");
 test_computed_value("filter", "invert(100%)", "invert(1)");
+test_computed_value("filter", "invert(2)", "invert(1)");
 test_computed_value("filter", "invert()", "invert(1)");
 
 test_computed_value("filter", "opacity(0)");
 test_computed_value("filter", "opacity(100%)", "opacity(1)");
+test_computed_value("filter", "opacity(2)", "opacity(1)");
 test_computed_value("filter", "opacity()", "opacity(1)");
 
 test_computed_value("filter", "saturate(0)");
@@ -54,6 +57,7 @@ test_computed_value("filter", "saturate()", "saturate(1)");
 
 test_computed_value("filter", "sepia(0)");
 test_computed_value("filter", "sepia(100%)", "sepia(1)");
+test_computed_value("filter", "sepia(2)", "sepia(1)");
 test_computed_value("filter", "sepia()", "sepia(1)");
 
 test_computed_value("filter", 'blur(10px) url("https://www.example.com/picture.svg#f") contrast(20) brightness(30)');
diff --git a/tests/wpt/web-platform-tests/css/mediaqueries/forced-colors.html b/tests/wpt/web-platform-tests/css/mediaqueries/forced-colors.html
new file mode 100644
index 00000000000..005b5cf4a8b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/mediaqueries/forced-colors.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/mediaqueries-5/#forced-colors" />
+<script type="text/javascript" src="/resources/testharness.js"></script>
+<script type="text/javascript" src="/resources/testharnessreport.js"></script>
+
+<script type="text/javascript" src="resources/matchmedia-utils.js"></script>
+<script>
+query_should_be_css_parseable("(forced-colors)");
+query_should_be_css_parseable("(forced-colors: none)");
+query_should_be_css_parseable("(forced-colors: active)");
+
+query_should_not_be_css_parseable("(forced-colors: 0)");
+query_should_not_be_css_parseable("(forced-colors: no-preference)");
+query_should_not_be_css_parseable("(forced-colors: 10px)");
+query_should_not_be_css_parseable("(forced-colors: active 0)");
+query_should_not_be_css_parseable("(forced-colors: none active)");
+query_should_not_be_css_parseable("(forced-colors: active/none)");
+
+query_should_be_js_parseable("(forced-colors)");
+query_should_be_js_parseable("(forced-colors: none)");
+query_should_be_js_parseable("(forced-colors: active)");
+
+query_should_not_be_js_parseable("(forced-colors: 0)");
+query_should_not_be_js_parseable("(forced-colors: no-preference)");
+query_should_not_be_js_parseable("(forced-colors: 10px)");
+query_should_not_be_js_parseable("(forced-colors: active 0)");
+query_should_not_be_js_parseable("(forced-colors: none active)");
+query_should_not_be_js_parseable("(forced-colors: active/none)");
+
+test(() => {
+  let booleanContext = window.matchMedia("(forced-colors)");
+  let none = window.matchMedia("(forced-colors: none)");
+  assert_equals(booleanContext.matches, !none.matches);
+}, "Check that none evaluates to false in the boolean context");
+</script>
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-anchor-interpolation.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-anchor-interpolation.html
index 414a0bd0d70..7ad9482a2b4 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-anchor-interpolation.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-anchor-interpolation.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-anchor supports <position> animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
     <style>
       body {
         width: 500px;
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-distance-interpolation.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-distance-interpolation.html
index a56878a0a5a..4912b9cf251 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-distance-interpolation.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-distance-interpolation.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-distance supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-001.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-001.html
index 279152e1033..5b90813bb59 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-001.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-001.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-distance supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-002.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-002.html
index 742e9d0a9ed..2841bd9562e 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-002.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-002.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-distance supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-003.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-003.html
index a6d4e89efd0..44c0285055e 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-003.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-003.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-distance supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-004.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-004.html
index f3e07ab97b4..860348649b1 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-004.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-004.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-distance supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-005.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-005.html
index 617fff0490d..afe4bf57743 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-005.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-path-interpolation-005.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-distance supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-position-interpolation.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-position-interpolation.html
index c31034d10f8..5ccca37dc30 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-position-interpolation.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-position-interpolation.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-position supports <position> animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
     <style>
       body {
         width: 500px;
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/offset-rotate-interpolation.html b/tests/wpt/web-platform-tests/css/motion/animation/offset-rotate-interpolation.html
index 3b3d755f4f1..a55a005747f 100644
--- a/tests/wpt/web-platform-tests/css/motion/animation/offset-rotate-interpolation.html
+++ b/tests/wpt/web-platform-tests/css/motion/animation/offset-rotate-interpolation.html
@@ -8,7 +8,7 @@
     <meta name="assert" content="offset-rotate supports animation.">
     <script src="/resources/testharness.js"></script>
     <script src="/resources/testharnessreport.js"></script>
-    <script src="resources/interpolation-testcommon.js"></script>
+    <script src="/css/support/interpolation-testcommon.js"></script>
   </head>
   <body>
     <script>
diff --git a/tests/wpt/web-platform-tests/css/motion/animation/resources/interpolation-testcommon.js b/tests/wpt/web-platform-tests/css/motion/animation/resources/interpolation-testcommon.js
deleted file mode 100644
index 6933733e197..00000000000
--- a/tests/wpt/web-platform-tests/css/motion/animation/resources/interpolation-testcommon.js
+++ /dev/null
@@ -1,66 +0,0 @@
-'use strict';
-function test_interpolation(settings, expectations) {
-  // Returns a timing function that at 0.5 evaluates to progress.
-  function timingFunction(progress) {
-    if (progress === 0)
-      return 'steps(1, end)';
-    if (progress === 1)
-      return 'steps(1, start)';
-    var y = (8 * progress - 1) / 6;
-    return 'cubic-bezier(0, ' + y + ', 1, ' + y + ')';
-  }
-
-  test(function(){
-    assert_true(CSS.supports(settings.property, settings.from), 'Value "' + settings.from + '" is supported by ' + settings.property);
-    assert_true(CSS.supports(settings.property, settings.to), 'Value "' + settings.to + '" is supported by ' + settings.property);
-  }, '"' + settings.from + '" and "' + settings.to + '" are valid ' + settings.property + ' values');
-
-  for (var i = 0; i < expectations.length; ++i) {
-    var progress = expectations[i].at;
-    var expectation = expectations[i].expect;
-    var animationId = 'anim' + i;
-    var targetId = 'target' + i;
-    var referenceId = 'reference' + i;
-    test(function(){
-      assert_true(CSS.supports(settings.property, expectation), 'Value "' + expectation + '" is supported by ' + settings.property);
-
-      var stylesheet = document.createElement('style');
-      stylesheet.textContent =
-        '#' + targetId + ' {\n' +
-        '  animation: 2s ' + timingFunction(progress) + ' -1s paused ' + animationId + ';\n' +
-        '}\n' +
-        '@keyframes ' + animationId + ' {\n' +
-        '  0% { ' + settings.property + ': ' + settings.from + '; }\n' +
-        '  100% { ' + settings.property + ': ' + settings.to + '; }\n' +
-        '}\n' +
-        '#' + referenceId + ' {\n' +
-        '  ' + settings.property + ': ' + expectation + ';\n' +
-        '}\n';
-      document.head.appendChild(stylesheet);
-
-      var target = document.createElement('div');
-      target.id = targetId;
-      document.body.appendChild(target);
-
-      var reference = document.createElement('div');
-      reference.id = referenceId;
-      document.body.appendChild(reference);
-      reference.style = '';
-
-      assert_equals(getComputedStyle(target)[settings.property], getComputedStyle(reference)[settings.property]);
-    }, (settings.test_prefix ? settings.test_prefix : "") +
-       'Animation between "' + settings.from + '" and "' + settings.to +
-       '" at progress ' + progress);
-  }
-}
-
-function test_no_interpolation(settings) {
-  var expectatFrom = [-1, 0, 0.125].map(function (progress) {
-    return {at: progress, expect: settings.from};
-  });
-  var expectatTo = [0.875, 1, 2].map(function (progress) {
-    return {at: progress, expect: settings.to};
-  });
-
-  test_interpolation(settings, expectatFrom.concat(expectatTo));
-}
diff --git a/tests/wpt/web-platform-tests/css/css-grid/animation/resources/interpolation-testcommon.js b/tests/wpt/web-platform-tests/css/support/interpolation-testcommon.js
similarity index 89%
rename from tests/wpt/web-platform-tests/css/css-grid/animation/resources/interpolation-testcommon.js
rename to tests/wpt/web-platform-tests/css/support/interpolation-testcommon.js
index 530b4fea5c3..9bc71ff9d32 100644
--- a/tests/wpt/web-platform-tests/css/css-grid/animation/resources/interpolation-testcommon.js
+++ b/tests/wpt/web-platform-tests/css/support/interpolation-testcommon.js
@@ -11,8 +11,8 @@ function test_interpolation(settings, expectations) {
   }
 
   test(function(){
-    assert_true(CSS.supports(settings.property, settings.from), 'Value "' + settings.from + '" is supported by ' + settings.property);
-    assert_true(CSS.supports(settings.property, settings.to), 'Value "' + settings.to + '" is supported by ' + settings.property);
+    assert_true(CSS.supports(settings.property, settings.from), 'From value "' + settings.from + '" is supported by ' + settings.property);
+    assert_true(CSS.supports(settings.property, settings.to), 'To value "' + settings.to + '" is supported by ' + settings.property);
   }, '"' + settings.from + '" and "' + settings.to + '" are valid ' + settings.property + ' values');
 
   for (var i = 0; i < expectations.length; ++i) {
@@ -22,7 +22,7 @@ function test_interpolation(settings, expectations) {
     var targetId = 'target' + i;
     var referenceId = 'reference' + i;
     test(function(){
-      assert_true(CSS.supports(settings.property, expectation), 'Value "' + expectation + '" is supported by ' + settings.property);
+      assert_true(CSS.supports(settings.property, expectation), 'Expectation value "' + expectation + '" is supported by ' + settings.property);
 
       var stylesheet = document.createElement('style');
       stylesheet.textContent =
diff --git a/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-tentative.html b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-tentative.html
index 993aa0d5dc9..0190eaa84f7 100644
--- a/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-tentative.html
+++ b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-disabled-tentative.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="/css/motion/animation/resources/interpolation-testcommon.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
 <title> 'layout-animations' Policy : Correct behavior for affected and unaffected properties when
          feature is disabled.
 </title>
diff --git a/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-enabled-tentative.html b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-enabled-tentative.html
index cf396e90223..19e405496ee 100644
--- a/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-enabled-tentative.html
+++ b/tests/wpt/web-platform-tests/feature-policy/experimental-features/layout-animations-enabled-tentative.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
-<script src="/css/motion/animation/resources/interpolation-testcommon.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
 <title> 'layout-animations' Policy : Correct behavior for affected and unaffected properties when
          feature is enabled.
 </title>
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.actualBoundingBox.html b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.actualBoundingBox.html
new file mode 100644
index 00000000000..e747d306803
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.actualBoundingBox.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.text.measure.actualBoundingBox</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/canvas-tests.js"></script>
+
+<h1>2d.text.measure.actualBoundingBox</h1>
+<p class="desc">Testing actualBoundingBox for OffscreenCanvas</p>
+
+
+<script>
+var t = async_test("Testing actualBoundingBox for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        ctx.baseline = 'alphabetic'
+        // Some platforms may return '-0'.
+        _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxLeft)", "0");
+        // Different platforms may render text slightly different.
+        _assert(ctx.measureText('A').actualBoundingBoxRight >= 50, "ctx.measureText('A').actualBoundingBoxRight >= 50");
+        _assert(ctx.measureText('A').actualBoundingBoxAscent >= 35, "ctx.measureText('A').actualBoundingBoxAscent >= 35");
+        _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxDescent), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxDescent)", "0");
+
+        _assertSame(Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft)", "0");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxRight >= 200, "ctx.measureText('ABCD').actualBoundingBoxRight >= 200");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxAscent >= 85, "ctx.measureText('ABCD').actualBoundingBoxAscent >= 85");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxDescent >= 37, "ctx.measureText('ABCD').actualBoundingBoxDescent >= 37");
+    }), 500);
+});
+
+t.done();
+
+});
+</script>
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js
new file mode 100644
index 00000000000..da6eac509f1
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.actualBoundingBox.worker.js
@@ -0,0 +1,42 @@
+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.actualBoundingBox
+// Description:Testing actualBoundingBox for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("Testing actualBoundingBox for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        ctx.baseline = 'alphabetic'
+        // Some platforms may return '-0'.
+        _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxLeft)", "0");
+        // Different platforms may render text slightly different.
+        _assert(ctx.measureText('A').actualBoundingBoxRight >= 50, "ctx.measureText('A').actualBoundingBoxRight >= 50");
+        _assert(ctx.measureText('A').actualBoundingBoxAscent >= 35, "ctx.measureText('A').actualBoundingBoxAscent >= 35");
+        _assertSame(Math.abs(ctx.measureText('A').actualBoundingBoxDescent), 0, "Math.abs(ctx.measureText('A').actualBoundingBoxDescent)", "0");
+
+        _assertSame(Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft), 0, "Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft)", "0");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxRight >= 200, "ctx.measureText('ABCD').actualBoundingBoxRight >= 200");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxAscent >= 85, "ctx.measureText('ABCD').actualBoundingBoxAscent >= 85");
+        _assert(ctx.measureText('ABCD').actualBoundingBoxDescent >= 37, "ctx.measureText('ABCD').actualBoundingBoxDescent >= 37");
+    }), 500);
+});
+
+t.done();
+
+});
+done();
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.advances.html b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.advances.html
new file mode 100644
index 00000000000..ce03b2bc432
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.advances.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.text.measure.advances</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/canvas-tests.js"></script>
+
+<h1>2d.text.measure.advances</h1>
+<p class="desc">Testing width advances for OffscreenCanvas</p>
+
+
+<script>
+var t = async_test("Testing width advances for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        // Some platforms may return '-0'.
+        _assertSame(Math.abs(ctx.measureText('Hello').advances[0]), 0, "Math.abs(ctx.measureText('Hello').advances[\""+(0)+"\"])", "0");
+        // Different platforms may render text slightly different.
+        _assert(ctx.measureText('Hello').advances[1] >= 36, "ctx.measureText('Hello').advances[\""+(1)+"\"] >= 36");
+        _assert(ctx.measureText('Hello').advances[2] >= 58, "ctx.measureText('Hello').advances[\""+(2)+"\"] >= 58");
+        _assert(ctx.measureText('Hello').advances[3] >= 70, "ctx.measureText('Hello').advances[\""+(3)+"\"] >= 70");
+        _assert(ctx.measureText('Hello').advances[4] >= 80, "ctx.measureText('Hello').advances[\""+(4)+"\"] >= 80");
+
+        var tm = ctx.measureText('Hello');
+        _assertSame(ctx.measureText('Hello').advances[0], tm.advances[0], "ctx.measureText('Hello').advances[\""+(0)+"\"]", "tm.advances[\""+(0)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[1], tm.advances[1], "ctx.measureText('Hello').advances[\""+(1)+"\"]", "tm.advances[\""+(1)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[2], tm.advances[2], "ctx.measureText('Hello').advances[\""+(2)+"\"]", "tm.advances[\""+(2)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[3], tm.advances[3], "ctx.measureText('Hello').advances[\""+(3)+"\"]", "tm.advances[\""+(3)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[4], tm.advances[4], "ctx.measureText('Hello').advances[\""+(4)+"\"]", "tm.advances[\""+(4)+"\"]");
+    }), 500);
+});
+
+t.done();
+
+});
+</script>
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.advances.worker.js b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.advances.worker.js
new file mode 100644
index 00000000000..ff696f89649
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.advances.worker.js
@@ -0,0 +1,44 @@
+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.advances
+// Description:Testing width advances for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("Testing width advances for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        // Some platforms may return '-0'.
+        _assertSame(Math.abs(ctx.measureText('Hello').advances[0]), 0, "Math.abs(ctx.measureText('Hello').advances[\""+(0)+"\"])", "0");
+        // Different platforms may render text slightly different.
+        _assert(ctx.measureText('Hello').advances[1] >= 36, "ctx.measureText('Hello').advances[\""+(1)+"\"] >= 36");
+        _assert(ctx.measureText('Hello').advances[2] >= 58, "ctx.measureText('Hello').advances[\""+(2)+"\"] >= 58");
+        _assert(ctx.measureText('Hello').advances[3] >= 70, "ctx.measureText('Hello').advances[\""+(3)+"\"] >= 70");
+        _assert(ctx.measureText('Hello').advances[4] >= 80, "ctx.measureText('Hello').advances[\""+(4)+"\"] >= 80");
+
+        var tm = ctx.measureText('Hello');
+        _assertSame(ctx.measureText('Hello').advances[0], tm.advances[0], "ctx.measureText('Hello').advances[\""+(0)+"\"]", "tm.advances[\""+(0)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[1], tm.advances[1], "ctx.measureText('Hello').advances[\""+(1)+"\"]", "tm.advances[\""+(1)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[2], tm.advances[2], "ctx.measureText('Hello').advances[\""+(2)+"\"]", "tm.advances[\""+(2)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[3], tm.advances[3], "ctx.measureText('Hello').advances[\""+(3)+"\"]", "tm.advances[\""+(3)+"\"]");
+        _assertSame(ctx.measureText('Hello').advances[4], tm.advances[4], "ctx.measureText('Hello').advances[\""+(4)+"\"]", "tm.advances[\""+(4)+"\"]");
+    }), 500);
+});
+
+t.done();
+
+});
+done();
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.baselines.html b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.baselines.html
new file mode 100644
index 00000000000..7812c4e41ec
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.baselines.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.text.measure.baselines</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/canvas-tests.js"></script>
+
+<h1>2d.text.measure.baselines</h1>
+<p class="desc">Testing baselines for OffscreenCanvas</p>
+
+
+<script>
+var t = async_test("Testing baselines for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(Math.abs(ctx.measureText('A').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('A').getBaselines().alphabetic)", "0");
+        _assertSame(ctx.measureText('A').getBaselines().ideographic, -39, "ctx.measureText('A').getBaselines().ideographic", "-39");
+        _assertSame(ctx.measureText('A').getBaselines().hanging, 68, "ctx.measureText('A').getBaselines().hanging", "68");
+
+        _assertSame(Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic)", "0");
+        _assertSame(ctx.measureText('ABCD').getBaselines().ideographic, -39, "ctx.measureText('ABCD').getBaselines().ideographic", "-39");
+        _assertSame(ctx.measureText('ABCD').getBaselines().hanging, 68, "ctx.measureText('ABCD').getBaselines().hanging", "68");
+    }), 500);
+});
+
+t.done();
+
+});
+</script>
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.baselines.worker.js b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.baselines.worker.js
new file mode 100644
index 00000000000..721eccfe7bb
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.baselines.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.baselines
+// Description:Testing baselines for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("Testing baselines for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(Math.abs(ctx.measureText('A').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('A').getBaselines().alphabetic)", "0");
+        _assertSame(ctx.measureText('A').getBaselines().ideographic, -39, "ctx.measureText('A').getBaselines().ideographic", "-39");
+        _assertSame(ctx.measureText('A').getBaselines().hanging, 68, "ctx.measureText('A').getBaselines().hanging", "68");
+
+        _assertSame(Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic), 0, "Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic)", "0");
+        _assertSame(ctx.measureText('ABCD').getBaselines().ideographic, -39, "ctx.measureText('ABCD').getBaselines().ideographic", "-39");
+        _assertSame(ctx.measureText('ABCD').getBaselines().hanging, 68, "ctx.measureText('ABCD').getBaselines().hanging", "68");
+    }), 500);
+});
+
+t.done();
+
+});
+done();
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.emHeights.html b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.emHeights.html
new file mode 100644
index 00000000000..be8be39a104
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.emHeights.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.text.measure.emHeights</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/canvas-tests.js"></script>
+
+<h1>2d.text.measure.emHeights</h1>
+<p class="desc">Testing emHeights for OffscreenCanvas</p>
+
+
+<script>
+var t = async_test("Testing emHeights for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(ctx.measureText('A').emHeightAscent, 37.5, "ctx.measureText('A').emHeightAscent", "37.5");
+        _assertSame(ctx.measureText('A').emHeightDescent, 12.5, "ctx.measureText('A').emHeightDescent", "12.5");
+        _assertSame(ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent, 50, "ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent", "50");
+
+        _assertSame(ctx.measureText('ABCD').emHeightAscent, 37.5, "ctx.measureText('ABCD').emHeightAscent", "37.5");
+        _assertSame(ctx.measureText('ABCD').emHeightDescent, 12.5, "ctx.measureText('ABCD').emHeightDescent", "12.5");
+        _assertSame(ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent, 50, "ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent", "50");
+    }), 500);
+});
+
+t.done();
+
+});
+</script>
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.emHeights.worker.js b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.emHeights.worker.js
new file mode 100644
index 00000000000..561bcb8dc2d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.emHeights.worker.js
@@ -0,0 +1,37 @@
+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.emHeights
+// Description:Testing emHeights for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("Testing emHeights for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(ctx.measureText('A').emHeightAscent, 37.5, "ctx.measureText('A').emHeightAscent", "37.5");
+        _assertSame(ctx.measureText('A').emHeightDescent, 12.5, "ctx.measureText('A').emHeightDescent", "12.5");
+        _assertSame(ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent, 50, "ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent", "50");
+
+        _assertSame(ctx.measureText('ABCD').emHeightAscent, 37.5, "ctx.measureText('ABCD').emHeightAscent", "37.5");
+        _assertSame(ctx.measureText('ABCD').emHeightDescent, 12.5, "ctx.measureText('ABCD').emHeightDescent", "12.5");
+        _assertSame(ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent, 50, "ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent", "50");
+    }), 500);
+});
+
+t.done();
+
+});
+done();
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.fontBoundingBox.html b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.fontBoundingBox.html
new file mode 100644
index 00000000000..91e7f5fdc87
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.fontBoundingBox.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.text.measure.fontBoundingBox</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/canvas-tests.js"></script>
+
+<h1>2d.text.measure.fontBoundingBox</h1>
+<p class="desc">Testing fontBoundingBox for OffscreenCanvas</p>
+
+
+<script>
+var t = async_test("Testing fontBoundingBox for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(ctx.measureText('A').fontBoundingBoxAscent, 85, "ctx.measureText('A').fontBoundingBoxAscent", "85");
+        _assertSame(ctx.measureText('A').fontBoundingBoxDescent, 39, "ctx.measureText('A').fontBoundingBoxDescent", "39");
+
+        _assertSame(ctx.measureText('ABCD').fontBoundingBoxAscent, 85, "ctx.measureText('ABCD').fontBoundingBoxAscent", "85");
+        _assertSame(ctx.measureText('ABCD').fontBoundingBoxDescent, 39, "ctx.measureText('ABCD').fontBoundingBoxDescent", "39");
+    }), 500);
+});
+
+t.done();
+
+});
+</script>
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.js b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.js
new file mode 100644
index 00000000000..b9038bc31d0
--- /dev/null
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.fontBoundingBox.worker.js
@@ -0,0 +1,35 @@
+// DO NOT EDIT! This test has been generated by tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.measure.fontBoundingBox
+// Description:Testing fontBoundingBox for OffscreenCanvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/common/canvas-tests.js");
+
+var t = async_test("Testing fontBoundingBox for OffscreenCanvas");
+t.step(function() {
+
+var offscreenCanvas = new OffscreenCanvas(100, 50);
+var ctx = offscreenCanvas.getContext('2d');
+
+deferTest();
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        _assertSame(ctx.measureText('A').fontBoundingBoxAscent, 85, "ctx.measureText('A').fontBoundingBoxAscent", "85");
+        _assertSame(ctx.measureText('A').fontBoundingBoxDescent, 39, "ctx.measureText('A').fontBoundingBoxDescent", "39");
+
+        _assertSame(ctx.measureText('ABCD').fontBoundingBoxAscent, 85, "ctx.measureText('ABCD').fontBoundingBoxAscent", "85");
+        _assertSame(ctx.measureText('ABCD').fontBoundingBoxDescent, 39, "ctx.measureText('ABCD').fontBoundingBoxDescent", "39");
+    }), 500);
+});
+
+t.done();
+
+});
+done();
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.html b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.html
index a01c1099ebc..4712c1cdf3d 100644
--- a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.html
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.html
@@ -6,26 +6,31 @@
 <script src="/common/canvas-tests.js"></script>
 
 <h1>2d.text.measure.width.basic</h1>
-<p class="desc"></p>
+<p class="desc">The width of character is same as font used for OffscreenCanvas</p>
 
 
 <script>
-var t = async_test("");
+var t = async_test("The width of character is same as font used for OffscreenCanvas");
 t.step(function() {
 
 var offscreenCanvas = new OffscreenCanvas(100, 50);
 var ctx = offscreenCanvas.getContext('2d');
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText('A').width, 50, "ctx.measureText('A').width", "50");
-    _assertSame(ctx.measureText('AA').width, 100, "ctx.measureText('AA').width", "100");
-    _assertSame(ctx.measureText('ABCD').width, 200, "ctx.measureText('ABCD').width", "200");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText('A').width, 50, "ctx.measureText('A').width", "50");
+        _assertSame(ctx.measureText('AA').width, 100, "ctx.measureText('AA').width", "100");
+        _assertSame(ctx.measureText('ABCD').width, 200, "ctx.measureText('ABCD').width", "200");
 
-    ctx.font = '100px CanvasTest';
-    _assertSame(ctx.measureText('A').width, 100, "ctx.measureText('A').width", "100");
-}), 500);
+        ctx.font = '100px CanvasTest';
+        _assertSame(ctx.measureText('A').width, 100, "ctx.measureText('A').width", "100");
+    }), 500);
+});
 
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.worker.js b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.worker.js
index b4ca23b2a40..b646b789e3d 100644
--- a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.worker.js
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.basic.worker.js
@@ -1,27 +1,32 @@
 // DO NOT EDIT! This test has been generated by tools/gentest.py.
 // OffscreenCanvas test in a worker:2d.text.measure.width.basic
-// Description:
+// Description:The width of character is same as font used for OffscreenCanvas
 // Note:
 
 importScripts("/resources/testharness.js");
 importScripts("/common/canvas-tests.js");
 
-var t = async_test("");
+var t = async_test("The width of character is same as font used for OffscreenCanvas");
 t.step(function() {
 
 var offscreenCanvas = new OffscreenCanvas(100, 50);
 var ctx = offscreenCanvas.getContext('2d');
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText('A').width, 50, "ctx.measureText('A').width", "50");
-    _assertSame(ctx.measureText('AA').width, 100, "ctx.measureText('AA').width", "100");
-    _assertSame(ctx.measureText('ABCD').width, 200, "ctx.measureText('ABCD').width", "200");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText('A').width, 50, "ctx.measureText('A').width", "50");
+        _assertSame(ctx.measureText('AA').width, 100, "ctx.measureText('AA').width", "100");
+        _assertSame(ctx.measureText('ABCD').width, 200, "ctx.measureText('ABCD').width", "200");
 
-    ctx.font = '100px CanvasTest';
-    _assertSame(ctx.measureText('A').width, 100, "ctx.measureText('A').width", "100");
-}), 500);
+        ctx.font = '100px CanvasTest';
+        _assertSame(ctx.measureText('A').width, 100, "ctx.measureText('A').width", "100");
+    }), 500);
+});
 
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.empty.html b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.empty.html
index 6173d183ca2..1f48f77f3c8 100644
--- a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.empty.html
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.empty.html
@@ -6,21 +6,26 @@
 <script src="/common/canvas-tests.js"></script>
 
 <h1>2d.text.measure.width.empty</h1>
-<p class="desc">The empty string has zero width</p>
+<p class="desc">The empty string has zero width for OffscreenCanvas</p>
 
 
 <script>
-var t = async_test("The empty string has zero width");
+var t = async_test("The empty string has zero width for OffscreenCanvas");
 t.step(function() {
 
 var offscreenCanvas = new OffscreenCanvas(100, 50);
 var ctx = offscreenCanvas.getContext('2d');
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText("").width, 0, "ctx.measureText(\"\").width", "0");
-}), 500);
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText("").width, 0, "ctx.measureText(\"\").width", "0");
+    }), 500);
+});
 
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.empty.worker.js b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.empty.worker.js
index d9c71afafa6..35dca25c658 100644
--- a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.empty.worker.js
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.empty.worker.js
@@ -1,22 +1,27 @@
 // DO NOT EDIT! This test has been generated by tools/gentest.py.
 // OffscreenCanvas test in a worker:2d.text.measure.width.empty
-// Description:The empty string has zero width
+// Description:The empty string has zero width for OffscreenCanvas
 // Note:
 
 importScripts("/resources/testharness.js");
 importScripts("/common/canvas-tests.js");
 
-var t = async_test("The empty string has zero width");
+var t = async_test("The empty string has zero width for OffscreenCanvas");
 t.step(function() {
 
 var offscreenCanvas = new OffscreenCanvas(100, 50);
 var ctx = offscreenCanvas.getContext('2d');
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText("").width, 0, "ctx.measureText(\"\").width", "0");
-}), 500);
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText("").width, 0, "ctx.measureText(\"\").width", "0");
+    }), 500);
+});
 
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.space.html b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.space.html
index b4cdc8b0c6b..bfe895684f4 100644
--- a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.space.html
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.space.html
@@ -6,27 +6,32 @@
 <script src="/common/canvas-tests.js"></script>
 
 <h1>2d.text.measure.width.space</h1>
-<p class="desc">Space characters are converted to U+0020 and collapsed (per CSS)</p>
+<p class="desc">Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas</p>
 
 
 <script>
-var t = async_test("Space characters are converted to U+0020 and collapsed (per CSS)");
+var t = async_test("Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas");
 t.step(function() {
 
 var offscreenCanvas = new OffscreenCanvas(100, 50);
 var ctx = offscreenCanvas.getContext('2d');
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText('A B').width, 150, "ctx.measureText('A B').width", "150");
-    _assertSame(ctx.measureText('A  B').width, 150, "ctx.measureText('A  B').width", "150");
-    _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 150, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "150");
-    _assert(ctx.measureText('A \x0b B').width >= 200, "ctx.measureText('A \\x0b B').width >= 200");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText('A B').width, 150, "ctx.measureText('A B').width", "150");
+        _assertSame(ctx.measureText('A  B').width, 150, "ctx.measureText('A  B').width", "150");
+        _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 150, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "150");
+        _assert(ctx.measureText('A \x0b B').width >= 200, "ctx.measureText('A \\x0b B').width >= 200");
 
-    _assertSame(ctx.measureText(' AB').width, 100, "ctx.measureText(' AB').width", "100");
-    _assertSame(ctx.measureText('AB ').width, 100, "ctx.measureText('AB ').width", "100");
-}), 500);
+        _assertSame(ctx.measureText(' AB').width, 100, "ctx.measureText(' AB').width", "100");
+        _assertSame(ctx.measureText('AB ').width, 100, "ctx.measureText('AB ').width", "100");
+    }), 500);
+});
 
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.space.worker.js b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.space.worker.js
index 5fc91b84882..25b594a1cc6 100644
--- a/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.space.worker.js
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/text/2d.text.measure.width.space.worker.js
@@ -1,28 +1,33 @@
 // DO NOT EDIT! This test has been generated by tools/gentest.py.
 // OffscreenCanvas test in a worker:2d.text.measure.width.space
-// Description:Space characters are converted to U+0020 and collapsed (per CSS)
+// Description:Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas
 // Note:
 
 importScripts("/resources/testharness.js");
 importScripts("/common/canvas-tests.js");
 
-var t = async_test("Space characters are converted to U+0020 and collapsed (per CSS)");
+var t = async_test("Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas");
 t.step(function() {
 
 var offscreenCanvas = new OffscreenCanvas(100, 50);
 var ctx = offscreenCanvas.getContext('2d');
 
 deferTest();
-step_timeout(t.step_func_done(function () {
-    ctx.font = '50px CanvasTest';
-    _assertSame(ctx.measureText('A B').width, 150, "ctx.measureText('A B').width", "150");
-    _assertSame(ctx.measureText('A  B').width, 150, "ctx.measureText('A  B').width", "150");
-    _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 150, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "150");
-    _assert(ctx.measureText('A \x0b B').width >= 200, "ctx.measureText('A \\x0b B').width >= 200");
+var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+let fonts = (self.fonts ? self.fonts : document.fonts);
+fonts.add(f);
+fonts.ready.then(() => {
+    step_timeout(t.step_func_done(function () {
+        ctx.font = '50px CanvasTest';
+        _assertSame(ctx.measureText('A B').width, 150, "ctx.measureText('A B').width", "150");
+        _assertSame(ctx.measureText('A  B').width, 150, "ctx.measureText('A  B').width", "150");
+        _assertSame(ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width, 150, "ctx.measureText('A \\x09\\x0a\\x0c\\x0d  \\x09\\x0a\\x0c\\x0dB').width", "150");
+        _assert(ctx.measureText('A \x0b B').width >= 200, "ctx.measureText('A \\x0b B').width >= 200");
 
-    _assertSame(ctx.measureText(' AB').width, 100, "ctx.measureText(' AB').width", "100");
-    _assertSame(ctx.measureText('AB ').width, 100, "ctx.measureText('AB ').width", "100");
-}), 500);
+        _assertSame(ctx.measureText(' AB').width, 100, "ctx.measureText(' AB').width", "100");
+        _assertSame(ctx.measureText('AB ').width, 100, "ctx.measureText('AB ').width", "100");
+    }), 500);
+});
 
 t.done();
 
diff --git a/tests/wpt/web-platform-tests/offscreen-canvas/tools/tests2d.yaml b/tests/wpt/web-platform-tests/offscreen-canvas/tools/tests2d.yaml
index ed712922dd1..0aaad783101 100644
--- a/tests/wpt/web-platform-tests/offscreen-canvas/tools/tests2d.yaml
+++ b/tests/wpt/web-platform-tests/offscreen-canvas/tools/tests2d.yaml
@@ -10186,52 +10186,208 @@
   expected: green
 
 - name: 2d.text.measure.width.basic
+  desc: The width of character is same as font used for OffscreenCanvas
   testing:
     - 2d.text.measure
   fonts:
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        @assert ctx.measureText('A').width === 50;
-        @assert ctx.measureText('AA').width === 100;
-        @assert ctx.measureText('ABCD').width === 200;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    fonts.add(f);
+    fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText('A').width === 50;
+            @assert ctx.measureText('AA').width === 100;
+            @assert ctx.measureText('ABCD').width === 200;
 
-        ctx.font = '100px CanvasTest';
-        @assert ctx.measureText('A').width === 100;
-    }), 500);
+            ctx.font = '100px CanvasTest';
+            @assert ctx.measureText('A').width === 100;
+        }), 500);
+    });
 
 - name: 2d.text.measure.width.empty
-  desc: The empty string has zero width
+  desc: The empty string has zero width for OffscreenCanvas
   testing:
     - 2d.text.measure
   fonts:
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        @assert ctx.measureText("").width === 0;
-    }), 500);
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    fonts.add(f);
+    fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText("").width === 0;
+        }), 500);
+    });
 
 - name: 2d.text.measure.width.space
-  desc: Space characters are converted to U+0020 and collapsed (per CSS)
+  desc: Space characters are converted to U+0020 and collapsed (per CSS) for OffscreenCanvas
   testing:
     - 2d.text.measure.spaces
   fonts:
     - CanvasTest
   code: |
     deferTest();
-    step_timeout(t.step_func_done(function () {
-        ctx.font = '50px CanvasTest';
-        @assert ctx.measureText('A B').width === 150;
-        @assert ctx.measureText('A  B').width === 150; @moz-todo
-        @assert ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width === 150; @moz-todo
-        @assert ctx.measureText('A \x0b B').width >= 200;
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    fonts.add(f);
+    fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            @assert ctx.measureText('A B').width === 150;
+            @assert ctx.measureText('A  B').width === 150; @moz-todo
+            @assert ctx.measureText('A \x09\x0a\x0c\x0d  \x09\x0a\x0c\x0dB').width === 150; @moz-todo
+            @assert ctx.measureText('A \x0b B').width >= 200;
 
-        @assert ctx.measureText(' AB').width === 100; @moz-todo
-        @assert ctx.measureText('AB ').width === 100; @moz-todo
-    }), 500);
+            @assert ctx.measureText(' AB').width === 100; @moz-todo
+            @assert ctx.measureText('AB ').width === 100; @moz-todo
+        }), 500);
+    });
+
+- name: 2d.text.measure.advances
+  desc: Testing width advances for OffscreenCanvas
+  testing:
+    - 2d.text.measure.advances
+  fonts:
+    - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    fonts.add(f);
+    fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            // Some platforms may return '-0'.
+            @assert Math.abs(ctx.measureText('Hello').advances[0]) === 0;
+            // Different platforms may render text slightly different.
+            @assert ctx.measureText('Hello').advances[1] >= 36;
+            @assert ctx.measureText('Hello').advances[2] >= 58;
+            @assert ctx.measureText('Hello').advances[3] >= 70;
+            @assert ctx.measureText('Hello').advances[4] >= 80;
+
+            var tm = ctx.measureText('Hello');
+            @assert ctx.measureText('Hello').advances[0] === tm.advances[0];
+            @assert ctx.measureText('Hello').advances[1] === tm.advances[1];
+            @assert ctx.measureText('Hello').advances[2] === tm.advances[2];
+            @assert ctx.measureText('Hello').advances[3] === tm.advances[3];
+            @assert ctx.measureText('Hello').advances[4] === tm.advances[4];
+        }), 500);
+    });
+
+- name: 2d.text.measure.actualBoundingBox
+  desc: Testing actualBoundingBox for OffscreenCanvas
+  testing:
+    - 2d.text.measure.actualBoundingBox
+  fonts:
+    - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    fonts.add(f);
+    fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            ctx.baseline = 'alphabetic'
+            // Some platforms may return '-0'.
+            @assert Math.abs(ctx.measureText('A').actualBoundingBoxLeft) === 0;
+            // Different platforms may render text slightly different.
+            @assert ctx.measureText('A').actualBoundingBoxRight >= 50;
+            @assert ctx.measureText('A').actualBoundingBoxAscent >= 35;
+            @assert Math.abs(ctx.measureText('A').actualBoundingBoxDescent) === 0;
+
+            @assert Math.abs(ctx.measureText('ABCD').actualBoundingBoxLeft) === 0;
+            @assert ctx.measureText('ABCD').actualBoundingBoxRight >= 200;
+            @assert ctx.measureText('ABCD').actualBoundingBoxAscent >= 85;
+            @assert ctx.measureText('ABCD').actualBoundingBoxDescent >= 37;
+        }), 500);
+    });
+
+- name: 2d.text.measure.fontBoundingBox
+  desc: Testing fontBoundingBox for OffscreenCanvas
+  testing:
+    - 2d.text.measure.fontBoundingBox
+  fonts:
+    - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    fonts.add(f);
+    fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert ctx.measureText('A').fontBoundingBoxAscent === 85;
+            @assert ctx.measureText('A').fontBoundingBoxDescent === 39;
+
+            @assert ctx.measureText('ABCD').fontBoundingBoxAscent === 85;
+            @assert ctx.measureText('ABCD').fontBoundingBoxDescent === 39;
+        }), 500);
+    });
+
+- name: 2d.text.measure.emHeights
+  desc: Testing emHeights for OffscreenCanvas
+  testing:
+    - 2d.text.measure.emHeights
+  fonts:
+    - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    fonts.add(f);
+    fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert ctx.measureText('A').emHeightAscent === 37.5;
+            @assert ctx.measureText('A').emHeightDescent === 12.5;
+            @assert ctx.measureText('A').emHeightDescent + ctx.measureText('A').emHeightAscent === 50;
+
+            @assert ctx.measureText('ABCD').emHeightAscent === 37.5;
+            @assert ctx.measureText('ABCD').emHeightDescent === 12.5;
+            @assert ctx.measureText('ABCD').emHeightDescent + ctx.measureText('ABCD').emHeightAscent === 50;
+        }), 500);
+    });
+
+- name: 2d.text.measure.baselines
+  desc: Testing baselines for OffscreenCanvas
+  testing:
+    - 2d.text.measure.baselines
+  fonts:
+    - CanvasTest
+  code: |
+    deferTest();
+    var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
+    let fonts = (self.fonts ? self.fonts : document.fonts);
+    fonts.add(f);
+    fonts.ready.then(() => {
+        step_timeout(t.step_func_done(function () {
+            ctx.font = '50px CanvasTest';
+            ctx.direction = 'ltr';
+            ctx.align = 'left'
+            @assert Math.abs(ctx.measureText('A').getBaselines().alphabetic) === 0;
+            @assert ctx.measureText('A').getBaselines().ideographic === -39;
+            @assert ctx.measureText('A').getBaselines().hanging === 68;
+
+            @assert Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic) === 0;
+            @assert ctx.measureText('ABCD').getBaselines().ideographic === -39;
+            @assert ctx.measureText('ABCD').getBaselines().hanging === 68;
+        }), 500);
+    });
 
 # TODO: shadows, alpha, composite, clip
diff --git a/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html b/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html
index 090af39ed76..b0e0cbacbf2 100644
--- a/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html
+++ b/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/removing-allowpaymentrequest.https.sub.html
@@ -48,7 +48,9 @@ async_test((t) => {
       // 8. This is the second message we receive, from the second load.
       // Since the allowpaymentrequest flag was not set, we expect an exception.
       assert_equals(e.data.message, 'Exception', 'after navigation');
-      assert_array_equals(e.data.details, [true /* ex instanceof DOMException*/, 18 /* ex.code */, 'SecurityError' /* ex.name */], 'after navigation');
+      assert_equals(4, e.data.details.length);
+      // The last entry is the error stacktrace. Ignore it in comparison.
+      assert_array_equals(e.data.details.slice(0, 3), [true /* ex instanceof DOMException*/, 18 /* ex.code */, 'SecurityError' /* ex.name */], 'after navigation');
       t.done();
     }
   });
diff --git a/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html b/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html
index d77024eb7fc..45661de7e0d 100644
--- a/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html
+++ b/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/setting-allowpaymentrequest-timing.https.sub.html
@@ -24,7 +24,9 @@ async_test((t) => {
 
   window.onmessage = t.step_func_done((e) => {
     assert_equals(e.data.message, 'Exception');
-    assert_array_equals(e.data.details, [true /* ex instanceof DOMException */, DOMException.SECURITY_ERR, 'SecurityError']);
+    assert_equals(4, e.data.details.length);
+    // The last entry is the error stacktrace. Ignore it in comparison.
+    assert_array_equals(e.data.details.slice(0, 3), [true /* ex instanceof DOMException */, DOMException.SECURITY_ERR, 'SecurityError']);
   });
 
   document.body.appendChild(iframe);
diff --git a/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html b/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html
index 4564d264c4e..06f0c8479da 100644
--- a/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html
+++ b/tests/wpt/web-platform-tests/payment-request/allowpaymentrequest/setting-allowpaymentrequest.https.sub.html
@@ -23,7 +23,9 @@ async_test((t) => {
     i++;
     if (i === 1) {
       assert_equals(e.data.message, 'Exception', 'before navigation');
-      assert_array_equals(e.data.details, [true /* ex instanceof DOMException*/, 18 /* ex.code */, 'SecurityError' /* ex.name */], 'before navigation');
+      assert_equals(4, e.data.details.length);
+      // The last entry is the error stacktrace. Ignore it in comparison.
+      assert_array_equals(e.data.details.slice(0, 3), [true /* ex instanceof DOMException*/, 18 /* ex.code */, 'SecurityError' /* ex.name */], 'before navigation');
 
       // Navigate the iframe. This will fire a second 'load' event on the iframe.
       iframe.contentWindow.location.href = iframe.src + '?2';