diff --git a/tests/wpt/meta-legacy-layout/MANIFEST.json b/tests/wpt/meta-legacy-layout/MANIFEST.json
index 323adab70c5..260a5519e4d 100644
--- a/tests/wpt/meta-legacy-layout/MANIFEST.json
+++ b/tests/wpt/meta-legacy-layout/MANIFEST.json
@@ -4145,6 +4145,13 @@
        {}
       ]
      ],
+     "getComputedStyle-insets-absolute-crash.html": [
+      "e28828bab1fe74955d97a0601fa1d64b98822273",
+      [
+       null,
+       {}
+      ]
+     ],
      "removerule-invalidation-crash.html": [
       "a83f43d5faf62338cfb442468a6e9e0e011c79f2",
       [
@@ -4957,7 +4964,7 @@
       ]
      ],
      "remove-editing-host-during-forwarddelete.html": [
-      "9c803dc132763213b089cdb490c6c9b2357ff027",
+      "2b23c34607c3241e863cf5ea118ff08d2a9286b8",
       [
        null,
        {}
@@ -30087,6 +30094,45 @@
        {}
       ]
      ],
+     "page-size-001-print.html": [
+      "19d72b0231f4240206f14564103a61c08008e17d",
+      [
+       null,
+       [
+        [
+         "/css/printing/page-size-001-print-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "page-size-002-print.html": [
+      "8ecf38107b87968692292a227812d7d6c8dbd625",
+      [
+       null,
+       [
+        [
+         "/css/printing/page-size-002-print-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "page-size-003-print.html": [
+      "805ff0e568a1b52fce857893a7d5a13078559730",
+      [
+       null,
+       [
+        [
+         "/css/printing/page-size-003-print-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "paused-animations-print.html": [
       "03ef1bab3c3430891ed9f37ca913c1339d36e682",
       [
@@ -31547,7 +31593,7 @@
        ]
       ],
       "abspos-containing-block-initial-007.xht": [
-       "5adbb6daf44aa5b246575d28230a8e700a8b7a4b",
+       "0b70e1e63e7bd8edf806bfd961ed37124886388f",
        [
         null,
         [
@@ -31663,6 +31709,19 @@
         {}
        ]
       ],
+      "static-fixed-inside-abspos.html": [
+       "e3c3aa450d42505557b1f3eefd0aee8ea63fa4d6",
+       [
+        null,
+        [
+         [
+          "/css/reference/ref-filled-green-100px-square.xht",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "static-inside-inline-block.html": [
        "327e8e6dacdeabb4d2d57ab700d80f966ccde76b",
        [
@@ -61729,6 +61788,35 @@
         {}
        ]
       ],
+      "clear-on-replaced-element.html": [
+       "e5566b38326da17455d54c3d06d498f72bc4c693",
+       [
+        null,
+        [
+         [
+          "/css/CSS2/reference/ref-filled-green-100px-square.xht",
+          "=="
+         ]
+        ],
+        {
+         "fuzzy": [
+          [
+           null,
+           [
+            [
+             0,
+             2
+            ],
+            [
+             0,
+             1500
+            ]
+           ]
+          ]
+         ]
+        }
+       ]
+      ],
       "clear-with-top-margin-after-cleared-empty-block.html": [
        "5d0fba7981f3f688b22442c1e8bef2ff8b146f5e",
        [
@@ -303470,7 +303558,7 @@
       ]
      ],
      "offset-path-coord-box-001.html": [
-      "d4e903e69dfc5535a109b84868e77af03a9c27ee",
+      "15f378e038615dafa6b6ddbf00ca3155f81686b9",
       [
        null,
        [
@@ -303499,7 +303587,7 @@
       ]
      ],
      "offset-path-coord-box-002.html": [
-      "0446e2caa16c43ece32a0f3c0659c3d227f01ce9",
+      "40b94727d373fd47859ff29d909a28c00276a6e3",
       [
        null,
        [
@@ -303512,7 +303600,7 @@
       ]
      ],
      "offset-path-coord-box-003.html": [
-      "d3ea7f92a8ed17521a957aebcd631906b0ceb86b",
+      "e793c18830df60560a6fa746081fd714ea9ad3ab",
       [
        null,
        [
@@ -303524,13 +303612,13 @@
        {}
       ]
      ],
-     "offset-path-geometry-box.html": [
-      "1e9399441c2ec31e868e7fca6d2fa6d1169f366c",
+     "offset-path-coord-box-004.html": [
+      "c84bae6832ee6154862d472e0997989ca54dad59",
       [
        null,
        [
         [
-         "/css/motion/offset-path-geometry-box-ref.html",
+         "/css/motion/offset-path-coord-box-004-ref.html",
          "=="
         ]
        ],
@@ -303853,7 +303941,7 @@
       ]
      ],
      "offset-path-shape-circle-001.html": [
-      "4874ba339298a18fb0a733e0254053579bbe50ac",
+      "2205d9d3f69b24c29347f92c870bfc014c648e93",
       [
        null,
        [
@@ -303869,7 +303957,7 @@
           [
            [
             0,
-            1
+            35
            ],
            [
             0,
@@ -303895,7 +303983,7 @@
       ]
      ],
      "offset-path-shape-circle-003.html": [
-      "1911d425a16997d6a6da3edb0474e527c8b1e2b6",
+      "ef69e7e41b623e00663e3512cab838d4abf4a4ae",
       [
        null,
        [
@@ -303911,11 +303999,11 @@
           [
            [
             0,
-            10
+            110
            ],
            [
             0,
-            20
+            500
            ]
           ]
          ]
@@ -303924,7 +304012,7 @@
       ]
      ],
      "offset-path-shape-circle-004.html": [
-      "f0a8523dd16f15075828d9bcbbf31f62a97ff35d",
+      "d22665636e62e7369b50b97da768e55c3d3f1918",
       [
        null,
        [
@@ -303933,11 +304021,27 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            80
+           ],
+           [
+            0,
+            310
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-circle-005.html": [
-      "0ca93306c609fbf77da660636b23d0aebfff2c02",
+      "2ba5bc1650a4e497124a948b3b5ceefa22ec84ee",
       [
        null,
        [
@@ -303946,11 +304050,27 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            18
+           ],
+           [
+            0,
+            400
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-ellipse-001.html": [
-      "b8254458d38d71038f47dd80ffddbd971190b665",
+      "be3ade57c6ddcfed63b9796c3c3eb0b32530fb26",
       [
        null,
        [
@@ -303966,7 +304086,7 @@
           [
            [
             0,
-            1
+            24
            ],
            [
             0,
@@ -303992,7 +304112,7 @@
       ]
      ],
      "offset-path-shape-ellipse-003.html": [
-      "540c56dba7b39ccb93f29e766c9178585c82238a",
+      "38ef5eb9bbfa9c955c2d4fd53440ab2d21c8a26e",
       [
        null,
        [
@@ -304001,7 +304121,23 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            25
+           ],
+           [
+            0,
+            450
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-ellipse-004.html": [
@@ -304018,7 +304154,7 @@
       ]
      ],
      "offset-path-shape-ellipse-005.html": [
-      "27eae4a5c491907c3455e5adae7c226190ee8f83",
+      "2b2c0abeff95564680680bd231752a8a0fa46544",
       [
        null,
        [
@@ -304027,7 +304163,23 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            18
+           ],
+           [
+            0,
+            400
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-inset-001.html": [
@@ -304060,7 +304212,7 @@
       ]
      ],
      "offset-path-shape-inset-002.html": [
-      "6279cdd35ebe1c1e977c67b30733fe82524a56dd",
+      "5ca502e8b1c30124204d9fd61d2db9fdcb630312",
       [
        null,
        [
@@ -304069,7 +304221,23 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            75
+           ],
+           [
+            0,
+            500
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-polygon-001.html": [
@@ -322925,7 +323093,7 @@
       ]
      ],
      "deferred-timeline-composited.html": [
-      "239c0ca50a97458f01402a104c40a4c4a8c2254e",
+      "e2437911b3993db5940e9113e077a005f71f7012",
       [
        null,
        [
@@ -323212,6 +323380,21 @@
        {}
       ]
      ]
+    },
+    "view-timelines": {
+     "range-boundary.html": [
+      "e2ca394ec0c9587b5e5b0be9eb1b2c3897a67764",
+      [
+       null,
+       [
+        [
+         "/scroll-animations/view-timelines/range-boundary-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ]
     }
    },
    "selection": {
@@ -326952,6 +327135,19 @@
    "web-animations": {
     "animation-model": {
      "keyframe-effects": {
+      "effect-value-opacity-replaced-effect.html": [
+       "bef3bd3e8d27fd721dd373e4f33cbae1f6b5b2c0",
+       [
+        null,
+        [
+         [
+          "/web-animations/animation-model/keyframe-effects/effect-value-opacity-replaced-effect-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "transform-and-opacity-on-inline-001.html": [
        "f76b53cd4c49152b1527bae481d76ace94243c7b",
        [
@@ -333518,6 +333714,12 @@
      ]
     }
    },
+   "captured-mouse-events": {
+    "META.yml": [
+     "90b8af85ee98035f893000e1acb4df59510bd10c",
+     []
+    ]
+   },
    "clear-site-data": {
     "META.yml": [
      "65ca96dbb9d774e97cc3a60f6b6dde952104893b",
@@ -333711,6 +333913,34 @@
      "66ad9243c7dc54e59052fa4fe64124cd63d0e84e",
      []
     ],
+    "clear-site-data": {
+     "clear-site-data-all.https.html.headers": [
+      "226bb1c3b10489842901a1184b2b8822d2976075",
+      []
+     ],
+     "clear-site-data-cache.https.html.headers": [
+      "226bb1c3b10489842901a1184b2b8822d2976075",
+      []
+     ],
+     "clear-site-data-cookies.https.html.headers": [
+      "226bb1c3b10489842901a1184b2b8822d2976075",
+      []
+     ],
+     "clear-site-data-storage.https.html.headers": [
+      "226bb1c3b10489842901a1184b2b8822d2976075",
+      []
+     ],
+     "resources": {
+      "check-client-hints.py": [
+       "f5172300028711ca36c1812230d4ce0148cb0390",
+       []
+      ],
+      "clear-site-data.py": [
+       "fd16be9fbcb0ffba3c440b5525e0580efd088f37",
+       []
+      ]
+     }
+    },
     "critical-ch": {
      "critical-ch.navigation-timing.restart.https.html.headers": [
       "b221a32886fffa1fd8dc5562fa211b8446db835b",
@@ -355381,7 +355611,7 @@
       ]
      },
      "fedcm-helper.sub.js": [
-      "79136b5958fa584842daf5455e6f419851842d00",
+      "e548e8e9c9d4d6aa53114368770455420e66f9d4",
       []
      ],
      "fedcm-iframe-level2.html": [
@@ -375691,6 +375921,14 @@
        "57bf3ddc5213d06e0975de38f330ffb7c441b268",
        []
       ],
+      "12x12-green.png": [
+       "1b9284844852a853624cc9c5848a6b1cef876e02",
+       []
+      ],
+      "1pxgreen-98pxred.png": [
+       "0f8571a94550493b483a4f0988fcb6ce1df1d412",
+       []
+      ],
       "1x1-green.png": [
        "b98ca0ba0a03c580ac339e4a3653539cfa8edc71",
        []
@@ -379943,7 +380181,7 @@
       []
      ],
      "align-items-baseline-row-vert-ref.html": [
-      "dec8ac3b353c97f55a40df7965a23b642c53149f",
+      "c9cbc39416d43ab5075287c23c45b8b4c3c7620f",
       []
      ],
      "anonymous-flex-item-split-ref.html": [
@@ -411593,18 +411831,18 @@
       []
      ],
      "offset-path-coord-box-001-ref.html": [
-      "e9a7fbb808feefff1838dcd1476b1829231ddbba",
+      "8b86ce26e1652bd3d06bbc0a7852084470cc7e17",
       []
      ],
      "offset-path-coord-box-002-ref.html": [
-      "b7bee52a1e389b84b3fe0f8ae0749ecf5a2647a5",
+      "41f65dc0164b896c3f84da20e6d8efee78c99d0b",
       []
      ],
      "offset-path-coord-box-003-ref.html": [
-      "5b9b445dd8fbc921416db58e95834aa699a9a3d2",
+      "0fa94d4c31b4fbeeb44603e1f1c3e50ca08b2bf2",
       []
      ],
-     "offset-path-geometry-box-ref.html": [
+     "offset-path-coord-box-004-ref.html": [
       "60870c815e140ac15502e723ea477678cdc848a7",
       []
      ],
@@ -411685,7 +411923,7 @@
       []
      ],
      "offset-path-shape-circle-001-ref.html": [
-      "7bc29af79c6ce74f1b7748f0234ac8346984e18e",
+      "6d6b64d32e3c622be1b27a9dae4c7293207fcab3",
       []
      ],
      "offset-path-shape-circle-002-ref.html": [
@@ -411693,11 +411931,11 @@
       []
      ],
      "offset-path-shape-circle-003-ref.html": [
-      "327d325137c399499b681f6552750ff3d008968c",
+      "c005984f768aed32b96779045addf9264c09da2b",
       []
      ],
      "offset-path-shape-circle-004-ref.html": [
-      "86c67dcdedcb2625216cd064384545113f2a96fc",
+      "925abdb8b4f04decd267bae83486b02730438eec",
       []
      ],
      "offset-path-shape-circle-005-ref.html": [
@@ -411705,7 +411943,7 @@
       []
      ],
      "offset-path-shape-ellipse-001-ref.html": [
-      "32236bbc239a98c6a512d64037fcda32a8c5e976",
+      "0e53fa2d355e16156f1f6e313910f688c7e97d0c",
       []
      ],
      "offset-path-shape-ellipse-002-ref.html": [
@@ -411713,7 +411951,7 @@
       []
      ],
      "offset-path-shape-ellipse-003-ref.html": [
-      "4a9fed4c86ab7d08bbe1d32ff74d26e42f50e675",
+      "2239210e49b563d4df210b2084d50d4c32a8d9bc",
       []
      ],
      "offset-path-shape-ellipse-004-ref.html": [
@@ -411729,7 +411967,7 @@
       []
      ],
      "offset-path-shape-inset-002-ref.html": [
-      "28195129f3282fadc8a2e691321425f886eef6c3",
+      "1bb649474aacd6d83601936bf12b918d2d1f9ed8",
       []
      ],
      "offset-path-shape-polygon-001-ref.html": [
@@ -411752,10 +411990,6 @@
       "7e9e07cccf3d26c8090ba98ee788565eca799b07",
       []
      ],
-     "offset-path-shape-ref.html": [
-      "a659b287fdab1ed7bda453c36c17140e0c2740f2",
-      []
-     ],
      "offset-path-shape-xywh-001-ref.html": [
       "12f9668dd5c8884368fe89104474d287bb04b28b",
       []
@@ -411902,6 +412136,18 @@
       "52ea6bfffcbf187acdeeeacdf960896a2d695986",
       []
      ],
+     "page-size-001-print-ref.html": [
+      "8bfd2717fa5def1e90513537fa34cf4f3ea2f9e4",
+      []
+     ],
+     "page-size-002-print-ref.html": [
+      "aa8cb6edcd242b8619caf2e67a35c7b4f2684daa",
+      []
+     ],
+     "page-size-003-print-ref.html": [
+      "38ea1508781e6313e9102bf4c307f91b290df4c4",
+      []
+     ],
      "paused-animations-print-ref.html": [
       "c22ecd174585100fd5faae8402f5a6e141b8264e",
       []
@@ -413652,6 +413898,14 @@
       "scroll_support.js": [
        "52c2f58723a2a39e9d652036d82d59475497c76e",
        []
+      ],
+      "scrollend-event-fires-to-iframe-inner-frame.html": [
+       "3657a8b87714f5b03f52def89847dd8df986f174",
+       []
+      ],
+      "scrollend-user-scroll-common.js": [
+       "4bf8f927ff2d7250326b75207831b1aa1e3975b9",
+       []
       ]
      }
     },
@@ -414349,7 +414603,7 @@
     },
     "include": {
      "editor-test-utils.js": [
-      "a4c24c94edb8e7b0660c7dfdac10b77add02a43c",
+      "24527d4a7931f7f41d34ec1150f82fe0867f6b3b",
       []
      ],
      "implementation.js": [
@@ -420520,7 +420774,7 @@
          []
         ],
         "remote-context-helper.js": [
-         "6978cef83211e5b5e65367c363a35e23b78bd25f",
+         "047d5cf821e5502f03736b2120541e7ff20dbb1d",
          []
         ]
        }
@@ -423940,7 +424194,7 @@
       "yaml": {
        "element": {
         "drawing-text-to-the-canvas.yaml": [
-         "7c3df028ac7b2940d98e41b87aec7eeef8fd6137",
+         "5d050477af1ad358eb40cc88b23389ba68d9d19a",
          []
         ],
         "meta.yaml": [
@@ -423948,7 +424202,7 @@
          []
         ],
         "text-styles.yaml": [
-         "76149894b6c4d6cff15b4b3462a87e2f1f1c3671",
+         "ee319c4fef183405b9bd855644941c32f995f833",
          []
         ],
         "the-canvas-element.yaml": [
@@ -423962,7 +424216,7 @@
          []
         ],
         "text.yaml": [
-         "80818bc29cfc8ba4607da1972fe7c6e58f9f10df",
+         "b66ae4f82068061bb3b635b2d387219f245708c5",
          []
         ],
         "the-offscreen-canvas.yaml": [
@@ -436262,11 +436516,11 @@
          []
         ],
         "penPointerEventProperties.html.ini": [
-         "d808b1793cfdbbb5c1acfdd5542c8e96d9de0e3d",
+         "f3a973c0f508da1e7a721481515887d2cabceeb0",
          []
         ],
         "penPointerEvents.html.ini": [
-         "39e05a8f0906b254649a4f4dcedd7c6535045064",
+         "d66b8470ea460bc3edce26a845941e4b740c4c1e",
          []
         ],
         "touchPointerEventProperties.html.ini": [
@@ -437347,8 +437601,12 @@
      "1e84e79cd1503946088888d02a5da45d5af7c5fe",
      []
     ],
+    "screen-capture-mouse-events.tentative.idl": [
+     "7b081cd9fd8a8a161c98b0bce2597c8a8ffd9df6",
+     []
+    ],
     "screen-capture.idl": [
-     "9abd4d2c1adf02fd063d24aeaeecb10e994fee1b",
+     "830b96d16fa976f739c73b11433ae0f3fac7b052",
      []
     ],
     "screen-orientation.idl": [
@@ -438114,11 +438372,11 @@
        []
       ],
       "modulepreload-in-early-hints.h2.py": [
-       "231b3bc69cb9dd47e3e298398214f3f9e0a433e9",
+       "cefd02a96a83acac7297b7dbab1f5eb9270a4dee",
        []
       ],
       "modulepreload-in-early-hints.html": [
-       "44aebf720a05d90db5f12477dbe83327c0e25a7b",
+       "64a02855040dbaa1af595487f80460f7106f2f0c",
        []
       ],
       "multiple-early-hints-responses.h2.py": [
@@ -444690,6 +444948,10 @@
         "b6460a486888a91c6cccc20d42d0426472406b0d",
         []
        ],
+       "assert-throws-dom.html": [
+        "4dd66b2372a06aa0fdd3d98cca73978b9833d599",
+        []
+       ],
        "force_timeout.html": [
         "2058fdb8621e7d55ea2b1e22839ff0afe999f7b8",
         []
@@ -445056,7 +445318,7 @@
      []
     ],
     "testdriver.js": [
-     "e582477da9ba9785a714c77fd2d302b9450c1398",
+     "a9ab7220aad069de3f6e2bf2c4fe34599658b899",
      []
     ],
     "testdriver.js.headers": [
@@ -445064,7 +445326,7 @@
      []
     ],
     "testharness.js": [
-     "112790bb1eeb8784a5a0e1cb29b1ae36be4c0c5c",
+     "413993089be6561cbad621c61ac4d4ab20bc8278",
      []
     ],
     "testharness.js.headers": [
@@ -445296,6 +445558,10 @@
      ]
     },
     "view-timelines": {
+     "range-boundary-ref.html": [
+      "057d0afabcdf579765cc1de8df4c63a6edeea8c4",
+      []
+     ],
      "testcommon.js": [
       "a798fe918ddc46781ad59d53e44f17cc5812bdf9",
       []
@@ -446852,7 +447118,7 @@
        []
       ],
       "fetch-access-control.py": [
-       "446af87b24974f77051161950113685b14ecd1c5",
+       "380a7d62225a1b0b473fdedf61d2ab565b7b2edf",
        []
       ],
       "fetch-canvas-tainting-double-write-worker.js": [
@@ -449210,7 +449476,7 @@
        []
       ],
       "utils.js": [
-       "f012d2d0e41ef61be278d05d6cd0fab1d0944f31",
+       "311d37f0a0198a0c0f669d603522ad17f26b9748",
        []
       ],
       "wake-lock.https.html": [
@@ -451243,7 +451509,7 @@
       ]
      },
      "commands.json": [
-      "769675e0ee42c6efc36fc1150778682f933a6465",
+      "cef6d22473b0fb3ea51f3477fcdab2f6afb26cd0",
       []
      ],
      "download.py": [
@@ -451251,7 +451517,7 @@
       []
      ],
      "item.py": [
-      "500ca109a74e3ef37031fa51240b69626cfa59dd",
+      "86f7bd6020b4e44f21359566fb65f4fe9ae3d775",
       []
      ],
      "jsonlib.py": [
@@ -451263,7 +451529,7 @@
       []
      ],
      "manifest.py": [
-      "f602727cb09b393d9877a04591f56fc28854cfee",
+      "0b00c71ac518967bdcd9c18d5a7faa657a343fd0",
       []
      ],
      "requirements.txt": [
@@ -451271,7 +451537,11 @@
       []
      ],
      "sourcefile.py": [
-      "386833722e7d64675b85a495e9664e32a4eb3fab",
+      "cf0bbf334b7f24597304dbb80dfb1d81ec609f31",
+      []
+     ],
+     "spec.py": [
+      "5148fceb3e63812c7801cfc089c3f1c6f5e3600a",
       []
      ],
      "testpaths.py": [
@@ -451292,11 +451562,11 @@
        []
       ],
       "test_manifest.py": [
-       "91b39f213a8e526c8fd6abd3d308c2d539ef3855",
+       "fc2314b8356a21074ba5f7aa0650cb15b59bd72d",
        []
       ],
       "test_sourcefile.py": [
-       "c0b281d244c9b0229108778cd9c26dfc3fcfeabc",
+       "d3411084f3ce681a456e8882a5c42cd5c57c84b2",
        []
       ],
       "test_utils.py": [
@@ -459259,11 +459529,11 @@
         []
        ],
        "client.py": [
-        "9bb03b34f96343bff885d89be37ddc2c3130b41a",
+        "c0505dde1d1ffd44ab3834fe15739cf3809f7b2d",
         []
        ],
        "error.py": [
-        "21c9f720a8eb3c004fcb9148b3f151057995279e",
+        "b681660f1a8eda58a0f51108af02b861035cd440",
         []
        ],
        "modules": {
@@ -459272,11 +459542,11 @@
          []
         ],
         "_module.py": [
-         "e28a83584a8ac4de6747a4c3894c9728d5682acb",
+         "060010b2a331f8c93b8b6f98828d133e68ebe8bf",
          []
         ],
         "browsing_context.py": [
-         "f2abb4764e213506b0bb22499dc19dc45338eb3f",
+         "a9b8d3f76824a86e62b8d351c9a88eae5794bca2",
          []
         ],
         "input.py": [
@@ -459288,12 +459558,12 @@
          []
         ],
         "session.py": [
-         "cdcef11b94f24cfa24232812126b28a12ed4c13a",
+         "fe1c0385105a13fda3087117779a1e8b83c8d07a",
          []
         ]
        },
        "transport.py": [
-        "2d5d8ee9224ff549cb9256741be79cf3e4b076ed",
+        "d61ebaddea7b7e3cac008781a8dcf1dc8326700d",
         []
        ]
       },
@@ -459663,7 +459933,7 @@
         []
        ],
        "firefox_android.py": [
-        "7065d07a647f88ed6526856e03ee86ab8635c623",
+        "bf69e8f6083fe592c72d1a43665ec9ca0356bbb2",
         []
        ],
        "ie.py": [
@@ -459731,7 +460001,7 @@
         []
        ],
        "base.py": [
-        "c537e8271c7efe2cb73c81c0e07596346e371e08",
+        "17be0cec39f25e5cc169740eb6c2f632d7454ac7",
         []
        ],
        "executorchrome.py": [
@@ -459743,7 +460013,7 @@
         []
        ],
        "executormarionette.py": [
-        "9c9c18735a64caa7614efb431ebe0ee9174896f9",
+        "95f186082042e322ccf53faa308f429f972523a1",
         []
        ],
        "executorselenium.py": [
@@ -460024,7 +460294,7 @@
        []
       ],
       "wptcommandline.py": [
-       "d4950e14c0cb9e555d284993967a4349dfe8d081",
+       "875ba7e66a90738bf763d9abb7d6092abdcffd98",
        []
       ],
       "wptlogging.py": [
@@ -461833,6 +462103,10 @@
       ]
      },
      "keyframe-effects": {
+      "effect-value-opacity-replaced-effect-ref.html": [
+       "792ca214cfb0c9b02609b484a95891bd1683bfe3",
+       []
+      ],
       "transform-and-opacity-on-inline-001-ref.html": [
        "1e7f250c48fb093160a509b3d98c0b265085179f",
        []
@@ -461886,7 +462160,7 @@
      ]
     },
     "testcommon.js": [
-     "8597ca28df9a6cc9c17fe21b40eab000bf606b05",
+     "a106cd9ac67464f16cb2a5c104e1dbf742bfc289",
      []
     ],
     "timing-model": {
@@ -463050,7 +463324,7 @@
      ],
      "bidi": {
       "__init__.py": [
-       "033978e19364d033bd68233a607073f1b4e0f294",
+       "821684620973f3f8a16557ae9839f9c8cb5574c7",
        []
       ],
       "browsing_context": {
@@ -463060,7 +463334,7 @@
        ],
        "capture_screenshot": {
         "__init__.py": [
-         "c4d8dd5252c3eefecbe9877f296c0a910d961a4a",
+         "64f25b9b861f879127a31f3aa8ed33fffbfb9caf",
          []
         ]
        },
@@ -463110,37 +463384,7 @@
         "__init__.py": [
          "9b7d28f6dacd441177e2810370709fdfc303f6f0",
          []
-        ],
-        "support": {
-         "black_dot.png": [
-          "613754cfaf74a7a2d86984231479d5671731f18a",
-          []
-         ],
-         "empty.html": [
-          "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
-          []
-         ],
-         "empty.js": [
-          "3918c74e446336be4151ea3bdad00f4d9e6df47a",
-          []
-         ],
-         "empty.svg": [
-          "e0af766e8ff5de780818b9d0712714dd5638e882",
-          []
-         ],
-         "other.html": [
-          "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
-          []
-         ],
-         "other.svg": [
-          "7c20a99a4b545aa204a8b09667c480fc7f8f1918",
-          []
-         ],
-         "red_dot.png": [
-          "c5916f289705642eec4975cf51458b9afeefe46c",
-          []
-         ]
-        }
+        ]
        },
        "print": {
         "__init__.py": [
@@ -463153,6 +463397,42 @@
          "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
          []
         ]
+       },
+       "set_viewport": {
+        "__init__.py": [
+         "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+         []
+        ]
+       },
+       "support": {
+        "black_dot.png": [
+         "613754cfaf74a7a2d86984231479d5671731f18a",
+         []
+        ],
+        "empty.html": [
+         "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+         []
+        ],
+        "empty.js": [
+         "3918c74e446336be4151ea3bdad00f4d9e6df47a",
+         []
+        ],
+        "empty.svg": [
+         "e0af766e8ff5de780818b9d0712714dd5638e882",
+         []
+        ],
+        "other.html": [
+         "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+         []
+        ],
+        "other.svg": [
+         "7c20a99a4b545aa204a8b09667c480fc7f8f1918",
+         []
+        ],
+        "red_dot.png": [
+         "c5916f289705642eec4975cf51458b9afeefe46c",
+         []
+        ]
        }
       },
       "errors": {
@@ -463806,7 +464086,7 @@
        []
       ],
       "fixtures.py": [
-       "ba166ae8da87de03ec68c9c112f67c0d2a6036f3",
+       "957be6b0f462b1a7f1b61bcfb48cadb01c5f8f7d",
        []
       ],
       "fixtures_bidi.py": [
@@ -463898,7 +464178,7 @@
        []
       ],
       "inline.py": [
-       "a0a8d3881ef5f48644c4ef1d6398dbad77dcc11f",
+       "26f0491d1a87a0977813ed8264c684d94ad0ae93",
        []
       ],
       "keys.py": [
@@ -464150,7 +464430,7 @@
        []
       ],
       "conv_transpose2d.json": [
-       "c7026f91ee5011747d1ba058e07ebc4a54a45a60",
+       "2fcb317268cb9b48731ae137f514f904918613de",
        []
       ],
       "cos.json": [
@@ -464297,6 +464577,10 @@
        "52ea57c7632d0d27b1745ddd4e983c37becf9832",
        []
       ],
+      "softplus.json": [
+       "2b26e1439e30cd8c2f7bd504d9553ab6eb38138a",
+       []
+      ],
       "softsign.json": [
        "e3208b18ad49a64dbbeb6a939dc69d2ea5ab3c43",
        []
@@ -464327,7 +464611,7 @@
       ]
      },
      "utils.js": [
-      "37748fd57a405e645798a3bb92e3138d48a9941a",
+      "920459275d4bceac6d501b750bfaacbaecdb2a4d",
       []
      ]
     }
@@ -464588,7 +464872,7 @@
      []
     ],
     "constants.sub.js": [
-     "d8e340d304b26fb51be84ba76f68acbd0924ada7",
+     "fd3c3b84b96a0a2537ac65dc4f626c4be03d9077",
      []
     ],
     "cookies": {
@@ -490945,6 +491229,36 @@
       {}
      ]
     ],
+    "clear-site-data": {
+     "clear-site-data-all.https.html": [
+      "4abc620c9dc3e8586f715d43a4f839c9821133fe",
+      [
+       null,
+       {}
+      ]
+     ],
+     "clear-site-data-cache.https.html": [
+      "bb1f8aa43e7930d0484e5cc8c18e2ba1c6b22d34",
+      [
+       null,
+       {}
+      ]
+     ],
+     "clear-site-data-cookies.https.html": [
+      "72b7f6794e9fceed910dfe0b309aa1fb16e5559f",
+      [
+       null,
+       {}
+      ]
+     ],
+     "clear-site-data-storage.https.html": [
+      "49578134f56767923415287c5ce60b8713713066",
+      [
+       null,
+       {}
+      ]
+     ]
+    },
     "critical-ch": {
      "critical-ch.navigation-timing.no-restart.https.html": [
       "a7c2ad705db844db61f6038ed0bba496a0598ce2",
@@ -502873,7 +503187,7 @@
      ]
     ],
     "fedcm-context.https.html": [
-     "7675866272116b72d4ce41c286d2c178847a5a4e",
+     "67ba8256341a1d95af14a8c83b3e68f568f0e13e",
      [
       null,
       {
@@ -504501,13 +504815,27 @@
        {}
       ]
      ],
-     "anchor-getComputedStyle.html": [
+     "anchor-getComputedStyle-001.html": [
       "6d77cf9a9d4cc34f5b2c787502f0d7753ff41c94",
       [
        null,
        {}
       ]
      ],
+     "anchor-getComputedStyle-002.html": [
+      "ae697fcc7498917e165b471ae169068880ef46e0",
+      [
+       null,
+       {}
+      ]
+     ],
+     "anchor-getComputedStyle-003.html": [
+      "f9fca976544f1aaac8d84e9acd918c7538b7e86d",
+      [
+       null,
+       {}
+      ]
+     ],
      "anchor-name-001.html": [
       "4caf3ee2100327b03b73c5180ac4ecc8a3761173",
       [
@@ -504865,6 +505193,13 @@
        {}
       ]
      ],
+     "anchor-scroll-005.html": [
+      "82f3a23ac9c79184cdb033305364b8cf215536b7",
+      [
+       null,
+       {}
+      ]
+     ],
      "anchor-scroll-basics.html": [
       "6b2d96708bd44808f0cb7ce10a1b52e708e09eba",
       [
@@ -505075,6 +505410,13 @@
        {}
       ]
      ],
+     "position-fallback-bounds-basics.html": [
+      "3b8b67bd978f3361512222f75cd71f08143007b1",
+      [
+       null,
+       {}
+      ]
+     ],
      "position-fallback-cascade-layer-reorder.html": [
       "ec1a64205c55788b021040b278ce1e51c2cbfc5e",
       [
@@ -507929,7 +508271,7 @@
       ]
      ],
      "scope-invalidation.html": [
-      "d5ba17159e0be6f6c41c4617dfbadef7fd733308",
+      "c5bdb6165852f445f870e78d5e77e812cff3a069",
       [
        null,
        {}
@@ -508221,7 +508563,7 @@
        ]
       ],
       "color-valid-color-mix-function.html": [
-       "d664525effd6c05f0d88d9028eefed13c7f352f3",
+       "361f7488a13c3d4f49747d11ab21487f740a490c",
        [
         null,
         {}
@@ -508953,14 +509295,14 @@
        ]
       ],
       "font-relative-units-dynamic.html": [
-       "63a07c61dbd31f1529f3fab10cf348c098a5ff30",
+       "9dfaceeed6b41c7f0366ac6288809efb9a3e1e52",
        [
         null,
         {}
        ]
       ],
       "font-relative-units.html": [
-       "7f711ebf96c60efd793bcf4c03b92450cbfcdcd8",
+       "ba4a60dda21962a8956180b601984942c3dc94ff",
        [
         null,
         {}
@@ -509022,6 +509364,13 @@
         {}
        ]
       ],
+      "inheritance-from-container.html": [
+       "97dfff2fd02fe6e825f3d547caeb88fefef2d0ca",
+       [
+        null,
+        {}
+       ]
+      ],
       "inline-size-and-min-width.html": [
        "8ddcbc614cae184b65295ab722ce392df4491f5d",
        [
@@ -509922,7 +510271,7 @@
     },
     "css-easing": {
      "cubic-bezier-timing-functions-output.html": [
-      "168f4cd907ec93d84bafcd11b00a7c78878569c8",
+      "4e14ef3bb3e5db60f501ff64ee87cc9401b372f7",
       [
        null,
        {}
@@ -510743,21 +511092,21 @@
        ]
       ],
       "flex-align-baseline-table-001.html": [
-       "b90f840b10acaaac3af7adf4d91a1d3c30762019",
+       "e804c33cb4c6abd7b50f7a82a1a22d8f9725b7de",
        [
         null,
         {}
        ]
       ],
       "flex-align-baseline-table-002.html": [
-       "9126e4246cad69d7efb753b5afa75f0e579909f0",
+       "c7d2c8af70400f65df3a36df4f4f3508e9041c48",
        [
         null,
         {}
        ]
       ],
       "flex-align-baseline-table-003.html": [
-       "2092a898540d02c794c75d65f63a58ecfd4a707f",
+       "15f35401756e4b189ee871c3f93e0e7549871b6d",
        [
         null,
         {}
@@ -512710,7 +513059,7 @@
       ]
      ],
      "format-specifiers-variations.html": [
-      "480396ea16f81e96b411b7c75a7cd33e758b3e34",
+      "32b8ebed67ebdfd5d10ef374e68d4effb8d9028d",
       [
        null,
        {}
@@ -512797,7 +513146,7 @@
        ]
       ],
       "font-face-src-list.html": [
-       "c87705109fd1b39731c5ef1c1e1aa6e4d89ea487",
+       "07aeacd2eeccbb383e45e6dd3cc61aecd6b1e8f3",
        [
         null,
         {}
@@ -516975,7 +517324,7 @@
        ]
       ],
       "grid-template-shorthand-areas-valid.html": [
-       "4a22784332f4aa95d5a2b08345dd3cde171e79e4",
+       "2d2b2433a4102326ecd2fbdd1c33d12c0ffae009",
        [
         null,
         {}
@@ -517268,7 +517617,7 @@
      },
      "image-set": {
       "image-set-computed.sub.html": [
-       "6d54fd0d09b4ade26a254a0a9c8cb5a76097e88a",
+       "532e48e6e869e322e6816f2f0d3289aeea7786c6",
        [
         null,
         {}
@@ -518868,6 +519217,13 @@
        {}
       ]
      ],
+     "hit-test-in-vertical-rl.html": [
+      "526e33d7924668782fd0116c5a13d2aeda570b08",
+      [
+       null,
+       {}
+      ]
+     ],
      "hit-test-transformed-child.html": [
       "ac0fd54c9f35dda0f01f5b8eb92fd7df7a3b5bb7",
       [
@@ -519288,14 +519644,14 @@
     },
     "css-nesting": {
      "cssom.html": [
-      "b5bd80d1b46e3cda7714f4e047737a3057c35fac",
+      "fa22b2fb45368ed37a2f971d58c6ecb8736b7360",
       [
        null,
        {}
       ]
      ],
      "invalid-inner-rules.html": [
-      "ffb53420e2dacfead07094be6c8521f87633c9ed",
+      "87c7c9a93481c95345223c2a7a4f8cab62529826",
       [
        null,
        {}
@@ -521140,7 +521496,7 @@
       ]
      ],
      "register-property-syntax-parsing.html": [
-      "16cbdf0c571a5f5d7fa328b6d9a6295bfd3a5db0",
+      "5bda1c4c5b23ecc95ac98ef939a9bbba62cf196d",
       [
        null,
        {}
@@ -522196,7 +522552,7 @@
      ],
      "input": {
       "keyboard.html": [
-       "7b0c6c057420e98b0122cbcb2f7502037e370e21",
+       "187ac0fb9e3ee5b12e73ec75d3cd4f465e6b319e",
        [
         null,
         {
@@ -529559,6 +529915,13 @@
        {}
       ]
      ],
+     "idlharness-2.html": [
+      "236bf5642bcb92f81c241e80cb34482c46185cf3",
+      [
+       null,
+       {}
+      ]
+     ],
      "idlharness.html": [
       "4cc7ee50eb4915fcf95843f7eeee266abfa7b81a",
       [
@@ -533096,7 +533459,7 @@
      ],
      "animations": {
       "calc-interpolation.html": [
-       "40379a13fb2736ed5839e55a58c7cba581155e77",
+       "f2c49a5cb9f503f204dd09e2e9542beff2db67c7",
        [
         null,
         {}
@@ -533306,6 +533669,13 @@
        {}
       ]
      ],
+     "cap-invalidation.html": [
+      "0becd0d093d680c1c18323da51fc39812c3709cd",
+      [
+       null,
+       {}
+      ]
+     ],
      "ch-empty-pseudo-recalc-on-font-load.html": [
       "7ad2b85fa469d6c43806e2e0fffee8af4ae4a96b",
       [
@@ -533370,7 +533740,7 @@
       ]
      ],
      "exp-log-serialize.html": [
-      "9eca44e68290dc8b96a915db6da6a843bab75f43",
+      "6108278d9624daad216f2bde26e6d65b7dd6f50f",
       [
        null,
        {}
@@ -533607,6 +533977,13 @@
        {}
       ]
      ],
+     "rcap-invalidation.html": [
+      "562161b4e5d474651ce91c39af90f8fcfd250c1f",
+      [
+       null,
+       {}
+      ]
+     ],
      "rch-invalidation.html": [
       "fa85e94c72778c424b5cf9f525baf119a40b9f65",
       [
@@ -533671,7 +534048,7 @@
       ]
      ],
      "round-mod-rem-serialize.html": [
-      "39569995b3ab09d834796f94bea9605dae7846f6",
+      "aa7c768b952b3fa4c28618fbbd59451b827e828f",
       [
        null,
        {}
@@ -535569,6 +535946,13 @@
        {}
       ]
      ],
+     "getComputedStyle-insets-grid.html": [
+      "08b55733a1595abca152e75cb24f0b1219fce8d1",
+      [
+       null,
+       {}
+      ]
+     ],
      "getComputedStyle-insets-nobox.html": [
       "236abf17f9cab8652b350c1168f2c27c1f84a631",
       [
@@ -535583,6 +535967,13 @@
        {}
       ]
      ],
+     "getComputedStyle-insets-relpos-inline.html": [
+      "d5f197ee9bc6cd53ec636889773438391d698120",
+      [
+       null,
+       {}
+      ]
+     ],
      "getComputedStyle-insets-static.html": [
       "aa7dbee95667a5e3b829b7d3774311da49c01deb",
       [
@@ -537737,7 +538128,7 @@
        ]
       ],
       "offset-path-interpolation-005.html": [
-       "13de65d8a73bc6eafcbffe6f3f0155f6ad6819e6",
+       "11234bf31a325fd43b8c2d32f9e503ff8770c62d",
        [
         null,
         {}
@@ -537809,7 +538200,7 @@
        ]
       ],
       "offset-anchor-parsing-valid.html": [
-       "97a3c54131f1af3b71c635ee5ff37be8a3502ff0",
+       "6cb4d44117fa6361fc87efdee22e79bc6df749b5",
        [
         null,
         {}
@@ -537886,7 +538277,7 @@
        ]
       ],
       "offset-position-parsing-valid.html": [
-       "032a5b42b46d5bae228e6a112c50623d76dbc1b1",
+       "bc0d19a460f4f22f9a061ae6932f31637c7231d6",
        [
         null,
         {}
@@ -539037,6 +539428,13 @@
         {}
        ]
       ],
+      "is-pseudo-containing-sibling-relationship-in-has.html": [
+       "bd5f96a3e27a3875ec2bf08a16f424ea851bee6e",
+       [
+        null,
+        {}
+       ]
+      ],
       "is.html": [
        "8490f096976340bc970ed2c6156fb60f433768e9",
        [
@@ -539104,6 +539502,13 @@
         {}
        ]
       ],
+      "not-pseudo-containing-sibling-relationship-in-has.html": [
+       "ec6d86198b063475fa237d7a39f7a699ec19a9ae",
+       [
+        null,
+        {}
+       ]
+      ],
       "quirks-mode-stylesheet-dynamic-add-001.html": [
        "3d7be982378fe2414f818d1682eca8f38f3575ac",
        [
@@ -540405,7 +540810,7 @@
      }
     },
     "throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml": [
-     "c0a7f622fbe2e56fba7eab1ea71ffde0fc269fca",
+     "c2913a1312e05beb8f198832a0030a84568157c7",
      [
       null,
       {}
@@ -540419,7 +540824,7 @@
      ]
     ],
     "throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml": [
-     "13f664550be01d7fab3757732634dd02e56c723e",
+     "4a3c8ec43b0f23cd890a1daeeeb4c20941c96b2a",
      [
       null,
       {}
@@ -542313,8 +542718,17 @@
         }
        ]
       ],
+      "scrollend-event-fires-to-iframe-window.html": [
+       "1a20751bd53b1d4e838fd13d8eed09bf9b3f6dfb",
+       [
+        null,
+        {
+         "testdriver": true
+        }
+       ]
+      ],
       "scrollend-event-for-user-scroll.html": [
-       "561c90ca94c6af8c0335a962a16273e44c2d3717",
+       "a06843a35e7ec9c827d70fd8f6eefa5f9bfdf724",
        [
         null,
         {
@@ -583321,7 +583735,7 @@
       },
       "read-media": {
        "cross-origin-video.html": [
-        "b99658facb29b59964c29e910e1435d201321fb4",
+        "5f3e95cce40e2a00611583d7623cad8a4a3eeb27",
         [
          null,
          {}
@@ -588442,6 +588856,13 @@
          {}
         ]
        ],
+       "2d.text.drawing.style.fontStretch.settings.html": [
+        "b19eced89171199dcfb57f1d5aea4b8f7e83c427",
+        [
+         null,
+         {}
+        ]
+       ],
        "2d.text.drawing.style.fontVariant.settings.html": [
         "cff5ad183a084adddc905ef76ff58e7a3ad6a5f9",
         [
@@ -588478,7 +588899,7 @@
         ]
        ],
        "2d.text.drawing.style.textRendering.settings.html": [
-        "03b35dfaa9d2af989f2a6251685dc88f7e379988",
+        "dee856842ae8e764ddf454e77749c098e8d8ce6d",
         [
          null,
          {}
@@ -588513,7 +588934,7 @@
         ]
        ],
        "2d.text.measure.baselines.html": [
-        "95fac522d941f234ff1208b518dadf66bcd9a4c5",
+        "f5d149239611a932da0785cabf6e18db653d1305",
         [
          null,
          {}
@@ -593477,14 +593898,14 @@
         ]
        ],
        "2d.text.draw.baseline.hanging.html": [
-        "3ad15f31501a0f47a3b95e5c1f8567fcf66a20d2",
+        "7b3a0a9373bc87de31ce263c5bd6d2fc482ef43b",
         [
          null,
          {}
         ]
        ],
        "2d.text.draw.baseline.ideographic.html": [
-        "8d402223a4f213b5ecfedf78f7b5d292305177cc",
+        "8da9aabb942a17ad8cd63534539be447f9f4d09e",
         [
          null,
          {}
@@ -604940,28 +605361,28 @@
         ]
        ],
        "2d.text.draw.baseline.hanging.html": [
-        "0bd15ff0068e7b238d359e772b2c0fad01e04b04",
+        "0b8228343289fe59d269b4ccf63dc48b6008edda",
         [
          null,
          {}
         ]
        ],
        "2d.text.draw.baseline.hanging.worker.js": [
-        "4a5ced7b38f95fc9cef8ef3b6290b8ebd8b6338b",
+        "fca74d6938184d68f11790b86fbdb0240cd11d8e",
         [
          "html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.html",
          {}
         ]
        ],
        "2d.text.draw.baseline.ideographic.html": [
-        "3a1d6e5159c052eadc9fd3073fd3b6dbc70344ef",
+        "c996444b860a079402dbeb20344578c94877e58d",
         [
          null,
          {}
         ]
        ],
        "2d.text.draw.baseline.ideographic.worker.js": [
-        "b39c10b74f0c3ce27eb79f81bef5903616722bd7",
+        "0ffa6fe299a0cb9a03778f0f32a57141074d0b7c",
         [
          "html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.html",
          {}
@@ -605299,6 +605720,20 @@
          {}
         ]
        ],
+       "2d.text.drawing.style.fontStretch.settings.html": [
+        "95405a18a5682c2eb954b37d150a0f0c54f31af4",
+        [
+         null,
+         {}
+        ]
+       ],
+       "2d.text.drawing.style.fontStretch.settings.worker.js": [
+        "ff10a742b5843ced57142d1678010082625a940f",
+        [
+         "html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.worker.html",
+         {}
+        ]
+       ],
        "2d.text.drawing.style.fontVariant.settings.html": [
         "9756d095ba74fd386b1249b2c1cf24c9381c29ba",
         [
@@ -605426,14 +605861,14 @@
         ]
        ],
        "2d.text.drawing.style.textRendering.settings.html": [
-        "47094dc91fa9a9fffbef111ccbc91d02b46cc61e",
+        "3fc07d547886caac218c9cac27d9a2c835d466ea",
         [
          null,
          {}
         ]
        ],
        "2d.text.drawing.style.textRendering.settings.worker.js": [
-        "ca5741de95404ef84cf4b174737d7f3625d8a8c5",
+        "c37f2e342f20d68898a656b97e96891b52aaa0b9",
         [
          "html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.html",
          {}
@@ -605636,14 +606071,14 @@
         ]
        ],
        "2d.text.measure.baselines.html": [
-        "e58f9be455b0cd573da530ff0b37a64117af2740",
+        "09fd0f408223fae715cfea3cdb00000e76f9fcb2",
         [
          null,
          {}
         ]
        ],
        "2d.text.measure.baselines.worker.js": [
-        "6f157f4e653ef609aceaab2043da6e71234bb86c",
+        "c6288a569da0172d7c5f43bdb6c08d3a0e5b2256",
         [
          "html/canvas/offscreen/text/2d.text.measure.baselines.worker.html",
          {}
@@ -624412,7 +624847,7 @@
        ]
       ],
       "popover-focus-2.html": [
-       "be6923e604a18cef5b5f2150ec8345e62bebfbd5",
+       "2fa1b7a23dee262e19c4c04f7243cecef1c0f0fd",
        [
         null,
         {
@@ -628657,7 +629092,7 @@
         ]
        ],
        "disabled.html": [
-        "8808675eb69b17c7763b407ea7ce4458e9e08fda",
+        "142a12dd122b555dcc6eee18334f796dc9269961",
         [
          null,
          {}
@@ -635695,7 +636130,7 @@
        ]
       ],
       "penPointerEventProperties.html": [
-       "ba6c15f022539cd1ec86c23559064e205746c5b1",
+       "05f85d299e9802344bb9705c9f0a7c60843667fe",
        [
         null,
         {
@@ -635704,7 +636139,7 @@
        ]
       ],
       "penPointerEvents.html": [
-       "7141fb56556795fdd25a8ed740c25b2d7edcac9d",
+       "f885ad501a24113131a7a930f93e7e279106fead",
        [
         null,
         {
@@ -638907,8 +639342,62 @@
        {}
       ]
      ],
+     "modulepreload-as-worker-cross-origin.h2.window.js": [
+      "3756d7f7fa24e943e7e90a42a71806faadba358d",
+      [
+       "loading/early-hints/modulepreload-as-worker-cross-origin.h2.window.html",
+       {
+        "script_metadata": [
+         [
+          "script",
+          "/common/utils.js"
+         ],
+         [
+          "script",
+          "resources/early-hints-helpers.sub.js"
+         ]
+        ]
+       }
+      ]
+     ],
+     "modulepreload-as-worker.h2.window.js": [
+      "2fd36dfbf3dc0898f020715afdfb0a71eeb6f81a",
+      [
+       "loading/early-hints/modulepreload-as-worker.h2.window.html",
+       {
+        "script_metadata": [
+         [
+          "script",
+          "/common/utils.js"
+         ],
+         [
+          "script",
+          "resources/early-hints-helpers.sub.js"
+         ]
+        ]
+       }
+      ]
+     ],
+     "modulepreload-cross-origin.h2.window.js": [
+      "3499b4d60d0743d1ce118a4e16b50e29f8428126",
+      [
+       "loading/early-hints/modulepreload-cross-origin.h2.window.html",
+       {
+        "script_metadata": [
+         [
+          "script",
+          "/common/utils.js"
+         ],
+         [
+          "script",
+          "resources/early-hints-helpers.sub.js"
+         ]
+        ]
+       }
+      ]
+     ],
      "modulepreload-in-early-hints.h2.window.js": [
-      "5627f04a0fefe1c6996e493ef280826c924ec7bd",
+      "bd592b0396dd7bcb5b8ba479ba06739b224f59d1",
       [
        "loading/early-hints/modulepreload-in-early-hints.h2.window.html",
        {
@@ -642153,14 +642642,14 @@
      ]
     ],
     "MediaStreamTrack-applyConstraints-fast.html": [
-     "38fabdcdfac2f898a2b2e485215611600b75433d",
+     "792179801779219749de642a6c36b90883a6f2b2",
      [
       null,
       {}
      ]
     ],
     "MediaStreamTrack-applyConstraints-getSettings.https.html": [
-     "c6401570b8ba3e370be5b8414efb8e8d158c9a4d",
+     "e18480aae1a8314548dc588880195b04d98a0b30",
      [
       null,
       {
@@ -642169,7 +642658,7 @@
      ]
     ],
     "MediaStreamTrack-applyConstraints-reject.https.html": [
-     "5050ed27dd8e31a84dba7428d6008a3ab7932e45",
+     "0bb4c9f74eb76fa5e8f701a1714601b619a0a9f7",
      [
       null,
       {
@@ -642187,7 +642676,7 @@
      ]
     ],
     "MediaStreamTrack-clone.https.html": [
-     "3ee21031eb016b47b5fc6ae0e74cf9ffe14b7234",
+     "8945c1d9ea02d75fd12fe7c10d40089f6d241a4c",
      [
       null,
       {
@@ -650391,7 +650880,7 @@
       ]
      ],
      "performance-navigation-timing-redirect-on-history.tentative.window.js": [
-      "acb70ebfae469d8fce37aa9acc54c335bf65cb67",
+      "7191456cc845bddcd774efdbb71e4981b91bd066",
       [
        "performance-timeline/not-restored-reasons/performance-navigation-timing-redirect-on-history.tentative.window.html",
        {
@@ -652829,6 +653318,15 @@
       }
      ]
     ],
+    "pointerevent_pointerout_no_pointer_movement.html": [
+     "856f2ce37cec59f70dc1a9ad4d3fe0436da3e4cd",
+     [
+      null,
+      {
+       "testdriver": true
+      }
+     ]
+    ],
     "pointerevent_pointerout_pen.html": [
      "210055e6539a369461aa30e609489310891570fd",
      [
@@ -669982,6 +670480,13 @@
     }
    },
    "screen-capture": {
+    "capture-controller-event-target.https.window.js": [
+     "379f35956837c47bc7d732af222189442fd40d0e",
+     [
+      "screen-capture/capture-controller-event-target.https.window.html",
+      {}
+     ]
+    ],
     "delegate-request.https.sub.html": [
      "8cc81c13832d9cd051e35a884d354a0835e58f81",
      [
@@ -670578,7 +671083,7 @@
       ]
      ],
      "animation-timeline-parsing.html": [
-      "f0061c5705dd78484133968c414bfea9103ff6f1",
+      "9e3c1078b5b416ac8402abe8901ca8e1c8d0a9fa",
       [
        null,
        {}
@@ -670592,7 +671097,7 @@
       ]
      ],
      "animation-timeline-view-functional-notation.tentative.html": [
-      "3ac94478e5955b09d2625c5cc8785514d8cee76f",
+      "d91dfe924b7756e111bdc9ef6a2fc8fefa5245d4",
       [
        null,
        {}
@@ -670830,7 +671335,7 @@
       ]
      ],
      "view-timeline-animation.html": [
-      "d1ea2f6c07f56e848ed9d178b85af484c668a59c",
+      "1bf034a742f3b30be5070b78536614c1b53823fe",
       [
        null,
        {}
@@ -670858,7 +671363,7 @@
       ]
      ],
      "view-timeline-inset-animation.html": [
-      "9ba88fde507aceae168e1c0b31d38f90ebe6c7f3",
+      "f9aa0f291895ba15bead50f6e7efbc328a41a18e",
       [
        null,
        {}
@@ -670886,7 +671391,7 @@
       ]
      ],
      "view-timeline-lookup.html": [
-      "98f11b85429c02af8033ad4af1515de7997c69bf",
+      "067ac1fa969f119e252d3415f172cbb6e6129d82",
       [
        null,
        {}
@@ -671062,7 +671567,7 @@
       ]
      ],
      "scroll-animation-effect-phases.tentative.html": [
-      "67bc36ca104258b970489898872d9932201e3823",
+      "41ae0e0612f61a88f023cde8f32ff5fcf095df37",
       [
        null,
        {
@@ -671166,21 +671671,21 @@
       ]
      ],
      "block-view-timeline-current-time-vertical-rl.tentative.html": [
-      "5bc459845229196bc075a0f27a6461b5519700fc",
+      "beb380060e1b51e86f9f1cfd1ad6885754cab0c4",
       [
        null,
        {}
       ]
      ],
      "block-view-timeline-current-time.tentative.html": [
-      "a6530f663121c2e0b97a1ec41de8c35326435525",
+      "c24d04412fc99f1d227d8ac6202acb985f3c67d8",
       [
        null,
        {}
       ]
      ],
      "block-view-timeline-nested-subject.tentative.html": [
-      "2cc8af882ff87cbcacb7cbb84aa78824dff532fa",
+      "6fdc7c68229a8abba8b1e6f0409e483eed94fe93",
       [
        null,
        {}
@@ -671201,12 +671706,63 @@
       ]
      ],
      "inline-view-timeline-current-time.tentative.html": [
-      "5b37798fe89035a5eb459ae479fc94ac42a05689",
+      "59d73d0cdf772475f0f0f573562ac840ae0b958d",
       [
        null,
        {}
       ]
      ],
+     "sticky": {
+      "view-timeline-sticky-offscreen-1.html": [
+       "d8756769c5179cdb7458958b81151baa17b17d6a",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-2.html": [
+       "2d098dcbe306ddf4e089d50fc4a0bdd408538f77",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-3.html": [
+       "c87dfc4dcb7d155f852e0d1a27cbcd427de27213",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-4.html": [
+       "f6b02ffb2eebfbbf3338f49edc3068282a9949d7",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-5.html": [
+       "380c01297e14571cd2a678c2547ddf1374d6a654",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-6.html": [
+       "94f0abc9b1e6662931e630c231334d5bff77b082",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-7.html": [
+       "83115249fae7fb1ad263b6c5db4095701051bac9",
+       [
+        null,
+        {}
+       ]
+      ]
+     },
      "timeline-offset-in-keyframe.html": [
       "1168893854297560262e03c28bdf71580955b8ae",
       [
@@ -683335,7 +683891,7 @@
       ]
      ],
      "bad-strategies.any.js": [
-      "521fbffe3ab479bc276495398f935343df674110",
+      "409c63b8177e25222922d0a9eedb3e51a5a4a96a",
       [
        "streams/readable-streams/bad-strategies.any.html",
        {
@@ -689450,14 +690006,14 @@
        ]
       ],
       "SVGLength-px-with-context.html": [
-       "067948d5454d3b0ca715e58f72f7ab1840a4712d",
+       "b5c2149b692eea53d7565031d135317526736c44",
        [
         null,
         {}
        ]
       ],
       "SVGLength-px.html": [
-       "321be5912b84c3ad0df8a68231213311171386d5",
+       "25ce286197a49e9d06dc184b2fc8a89d15cd5ed5",
        [
         null,
         {}
@@ -700324,7 +700880,7 @@
      ]
     ],
     "partitioned-web-locks.tentative.https.html": [
-     "2f166e67bc13cc4976dfd10f854880b8f07a0e50",
+     "680474dea9838e643d612711bb405a2faf0c07fd",
      [
       null,
       {}
@@ -702647,6 +703203,15 @@
         null,
         {}
        ]
+      ],
+      "setSinkId-with-MediaElementAudioSourceNode.https.html": [
+       "af71782717ae07682f63ad6e3f45c74bb28b3415",
+       [
+        null,
+        {
+         "testdriver": true
+        }
+       ]
       ]
      },
      "the-mediastreamaudiodestinationnode-interface": {
@@ -704141,7 +704706,7 @@
      ]
     ],
     "encoded-video-chunk.any.js": [
-     "0cf0d8de4408dc1dc634b064c9a3fd313a04f813",
+     "9b60e59a79311dea38d8cb4cad1d3d1cebf2ff3a",
      [
       "webcodecs/encoded-video-chunk.any.html",
       {
@@ -705911,7 +706476,7 @@
      ]
     ],
     "videoDecoder-codec-specific.https.any.js": [
-     "4e0843646b7daed9829a21aa1243bbd2b697963f",
+     "31e14d81f3418879c5defd6f4953f7521ef5baaa",
      [
       "webcodecs/videoDecoder-codec-specific.https.any.html?av1",
       {
@@ -707057,7 +707622,7 @@
        ]
       ],
       "Set.html": [
-       "3134c8185906c1fcf0d5deeecf2ec668f73ef2c6",
+       "1390b51cd03b51cb15ceea1519fcd309bf914c86",
        [
         null,
         {}
@@ -709724,6 +710289,57 @@
       }
      ]
     ],
+    "softplus.https.any.js": [
+     "7096f64a043a91fba09c91df70114666c8980664",
+     [
+      "webnn/softplus.https.any.html",
+      {
+       "script_metadata": [
+        [
+         "title",
+         "test WebNN API softplus operation"
+        ],
+        [
+         "global",
+         "window,dedicatedworker"
+        ],
+        [
+         "script",
+         "./resources/utils.js"
+        ],
+        [
+         "timeout",
+         "long"
+        ]
+       ],
+       "timeout": "long"
+      }
+     ],
+     [
+      "webnn/softplus.https.any.worker.html",
+      {
+       "script_metadata": [
+        [
+         "title",
+         "test WebNN API softplus operation"
+        ],
+        [
+         "global",
+         "window,dedicatedworker"
+        ],
+        [
+         "script",
+         "./resources/utils.js"
+        ],
+        [
+         "timeout",
+         "long"
+        ]
+       ],
+       "timeout": "long"
+      }
+     ]
+    ],
     "softsign.https.any.js": [
      "61a7d5365fabca290eaeb400c961a107558e17ed",
      [
@@ -710343,7 +710959,7 @@
      ]
     ],
     "RTCPeerConnection-iceConnectionState.https.html": [
-     "5083be6cdfd16f5c2c67a80a7dbc9c2401f1a0a8",
+     "5361cb2c1af2b6cd9606798cca63b4e7e9f0a20b",
      [
       null,
       {
@@ -711742,7 +712358,7 @@
      ]
     ],
     "RTCRtpTransceiver-headerExtensionControl.html": [
-     "79eba02727bb35b745cee0a3b6246e37fb216e06",
+     "796d35dcb6bfffab5d62439da8dd93fc28aec9c9",
      [
       null,
       {}
@@ -722079,6 +722695,69 @@
       ]
      ]
     },
+    "mixed-content.https.any.js": [
+     "b7a6d8381da97b9b16cca3803717a66c8c7d69ad",
+     [
+      "websockets/mixed-content.https.any.html",
+      {
+       "script_metadata": [
+        [
+         "global",
+         "window,worker"
+        ],
+        [
+         "script",
+         "constants.sub.js"
+        ]
+       ]
+      }
+     ],
+     [
+      "websockets/mixed-content.https.any.serviceworker.html",
+      {
+       "script_metadata": [
+        [
+         "global",
+         "window,worker"
+        ],
+        [
+         "script",
+         "constants.sub.js"
+        ]
+       ]
+      }
+     ],
+     [
+      "websockets/mixed-content.https.any.sharedworker.html",
+      {
+       "script_metadata": [
+        [
+         "global",
+         "window,worker"
+        ],
+        [
+         "script",
+         "constants.sub.js"
+        ]
+       ]
+      }
+     ],
+     [
+      "websockets/mixed-content.https.any.worker.html",
+      {
+       "script_metadata": [
+        [
+         "global",
+         "window,worker"
+        ],
+        [
+         "script",
+         "constants.sub.js"
+        ]
+       ]
+      }
+     ]
+    ],
     "multi-globals": {
      "message-received.html": [
       "704b1e357b8ee2b37653888f6f9f456571a0ae58",
@@ -753839,6 +754518,15 @@
         {}
        ]
       ]
+     },
+     "subgrid": {
+      "repeat-auto-fill-009.html": [
+       "73b52a616b2237473d839960bbe933ed466b8ea2",
+       [
+        null,
+        {}
+       ]
+      ]
      }
     },
     "css-images": {
@@ -756088,7 +756776,7 @@
       "browsing_context": {
        "capture_screenshot": {
         "capture_screenshot.py": [
-         "7b26b2be0ce83a3eb54f2e9177a421a9520e7f1c",
+         "0ee4c8ed274ce31295d2cbf8f4229e7135ea2b28",
          [
           null,
           {}
@@ -756216,14 +756904,14 @@
        },
        "navigate": {
         "about_blank.py": [
-         "1f6d4774ae778fb007c6b718d21870f04655d710",
+         "55ca351297732a3cc69073f8d68f60459346e379",
          [
           null,
           {}
          ]
         ],
         "data_url.py": [
-         "8fd5695646d1b1e0f611f2f2c57dda595b05a4be",
+         "6d95beb66c000b4e2fbf2578ed3e8e5874ee736d",
          [
           null,
           {}
@@ -756237,21 +756925,21 @@
          ]
         ],
         "frame.py": [
-         "2c2131b6ee6f831fc318ca5a9903fc56689f30f2",
+         "4dcd88dfdb8513968a16ec21e4657e852e9785d4",
          [
           null,
           {}
          ]
         ],
         "hash.py": [
-         "d4862a62012d1b2c60e40a3f1c96e43bf0c448a9",
+         "d31c3f9a6ebcdf17e1916ccbc7ca5328861604e7",
          [
           null,
           {}
          ]
         ],
         "image.py": [
-         "b52ea9787c0ece95013d08d1db9e46a42c44e2ba",
+         "79030c9fe124678438221a6cb6166a5b525b2c8e",
          [
           null,
           {}
@@ -756265,14 +756953,14 @@
          ]
         ],
         "navigate.py": [
-         "a35f2728ef7b32d93846eae94d9dc2b794966ee2",
+         "142457028123c611f2eaf0b7ad45a02aba093f50",
          [
           null,
           {}
          ]
         ],
         "wait.py": [
-         "9a0b14e755e9cf9c2cc11fab8ae3cb48a1748e73",
+         "3a351e108908d949a276535bed4eeaa041dcd576",
          [
           null,
           {}
@@ -756349,12 +757037,51 @@
         ]
        },
        "reload": {
+        "frame.py": [
+         "ce9281583f2369013850d4c074a8e4c345cc453e",
+         [
+          null,
+          {}
+         ]
+        ],
         "invalid.py": [
          "35be21ef19fe2843d3d0e2c5fb837c09e998cad4",
          [
           null,
           {}
          ]
+        ],
+        "reload.py": [
+         "b6e957e8a8c5cb0b6e89b7bd6ab73b0b4fac56ef",
+         [
+          null,
+          {}
+         ]
+        ],
+        "wait.py": [
+         "2b581c2f0dbc0e34e63641318006aeed20963c6b",
+         [
+          null,
+          {
+           "timeout": "long"
+          }
+         ]
+        ]
+       },
+       "set_viewport": {
+        "invalid.py": [
+         "a649972ae18352ad0cce493b68cddbd86fb8ddb7",
+         [
+          null,
+          {}
+         ]
+        ],
+        "set_viewport.py": [
+         "1aa977be421c6dbea67408cca9a718049f023fa7",
+         [
+          null,
+          {}
+         ]
         ]
        }
       },
@@ -756674,14 +757401,14 @@
          ]
         ],
         "result.py": [
-         "a930cf2292fc690daaea447ccf0104cacad6c9bf",
+         "df989c407ee7dbf0a083e29697f9559fd733dbdd",
          [
           null,
           {}
          ]
         ],
         "result_node.py": [
-         "a2359b164ebbd6e3ef0abba42ad43106bc38e2d9",
+         "9d09b9fc04ace5d463976ee1a0af6d6b163e9b72",
          [
           null,
           {}
@@ -756701,6 +757428,13 @@
           {}
          ]
         ],
+        "serialization_options.py": [
+         "4084ec482093a88b8d55d59a719710908ad248bc",
+         [
+          null,
+          {}
+         ]
+        ],
         "strict_mode.py": [
          "1a9fd4f10823a526f27bc7aaeae32f1f263c9e13",
          [
@@ -756785,7 +757519,7 @@
          ]
         ],
         "invalid.py": [
-         "9923d7414e8497617b8f4c1f7e1f4edf31c1adc0",
+         "666bf4d06e0ef128132ef659c8ce039e3821f6fc",
          [
           null,
           {}
@@ -756799,14 +757533,14 @@
          ]
         ],
         "result.py": [
-         "afdfb5fe42f12b73780f17b4942000967eb420c5",
+         "faea80a86b60fa5939899640f5dfeaf69628fb67",
          [
           null,
           {}
          ]
         ],
         "result_node.py": [
-         "89ce95ed21da1088334e11238c296a565d27e498",
+         "a3ca316d0275f566e4bc913beae24ffae58af36d",
          [
           null,
           {}
diff --git a/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-002.html.ini b/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-002.html.ini
deleted file mode 100644
index d695ff0e521..00000000000
--- a/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-002.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[border-image-002.html]
-  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-003.html.ini b/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-003.html.ini
deleted file mode 100644
index 182fa949db8..00000000000
--- a/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-003.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[border-image-003.html]
-  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-004.html.ini b/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-004.html.ini
deleted file mode 100644
index e4f30d04308..00000000000
--- a/tests/wpt/meta-legacy-layout/css/css-backgrounds/border-image-004.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[border-image-004.html]
-  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/animation/opacity-animation-ending-correctly-001.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/animation/opacity-animation-ending-correctly-001.html.ini
new file mode 100644
index 00000000000..304b1579ca4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-color/animation/opacity-animation-ending-correctly-001.html.ini
@@ -0,0 +1,2 @@
+[opacity-animation-ending-correctly-001.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-color-mix-function.html.ini b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-color-mix-function.html.ini
index 5fbefaad28c..1c3ee092b7b 100644
--- a/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-color-mix-function.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-color/parsing/color-valid-color-mix-function.html.ini
@@ -1600,3 +1600,54 @@
 
   [e.style['color'\] = "color-mix(in hwb specified hue, hwb(320deg 30% 40%), hwb(20deg 30% 40%))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb, 70% red, 50% blue)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hsl, red 50%, blue)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hsl, red, blue 50%)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hsl, 50% hsl(120deg 10% 20%), hsl(30deg 30% 40%))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hsl, hsl(120deg 10% 20%), 50% hsl(30deg 30% 40%))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hwb, 50% hwb(120deg 10% 20%), hwb(30deg 30% 40%))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hwb, hwb(120deg 10% 20%), 50% hwb(30deg 30% 40%))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb, 50% color(srgb .1 .2 .3), color(srgb .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb, color(srgb .1 .2 .3), 50% color(srgb .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb-linear, 50% color(srgb-linear .1 .2 .3), color(srgb-linear .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb-linear, color(srgb-linear .1 .2 .3), 50% color(srgb-linear .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz, 50% color(xyz .1 .2 .3), color(xyz .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz, color(xyz .1 .2 .3), 50% color(xyz .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz-d50, 50% color(xyz-d50 .1 .2 .3), color(xyz-d50 .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz-d50, color(xyz-d50 .1 .2 .3), 50% color(xyz-d50 .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz-d65, 50% color(xyz-d65 .1 .2 .3), color(xyz-d65 .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz-d65, color(xyz-d65 .1 .2 .3), 50% color(xyz-d65 .5 .6 .7))" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-fonts/parsing/font-face-src-list.html.ini b/tests/wpt/meta-legacy-layout/css/css-fonts/parsing/font-face-src-list.html.ini
index 5d06b7fe69e..728d34ee2d0 100644
--- a/tests/wpt/meta-legacy-layout/css/css-fonts/parsing/font-face-src-list.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-fonts/parsing/font-face-src-list.html.ini
@@ -43,3 +43,9 @@
 
   [Check that src: url(foo.ttf) format(unknown), url(bar.ttf) tech(broken) is invalid]
     expected: FAIL
+
+  [Check that src: url(foo.ttf) tech(color-COLRv0) otherfunc(othervalue), url(foo.ttf) is valid]
+    expected: FAIL
+
+  [Check that src: url(foo.ttf) tech(color-COLRv0) otherfunc(othervalue), junk is invalid]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-images/image-set/image-set-computed.sub.html.ini b/tests/wpt/meta-legacy-layout/css/css-images/image-set/image-set-computed.sub.html.ini
index faaf1cc22e8..d4686575262 100644
--- a/tests/wpt/meta-legacy-layout/css/css-images/image-set/image-set-computed.sub.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-images/image-set/image-set-computed.sub.html.ini
@@ -100,3 +100,9 @@
 
   [Property background-image value '-webkit-image-set(url('http://web-platform.test/example.png') calc(37dpcm + 0.79532dpcm))']
     expected: FAIL
+
+  [Property background-image value 'image-set(url('http://web-platform.test/example.png') calc(-1 * 1x))']
+    expected: FAIL
+
+  [Property background-image value '-webkit-image-set(url('http://web-platform.test/example.png') calc(-1 * 1x))']
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-text/white-space/trailing-other-space-separators-break-spaces-005.html.ini b/tests/wpt/meta-legacy-layout/css/css-text/white-space/trailing-other-space-separators-break-spaces-005.html.ini
new file mode 100644
index 00000000000..b9463b3ee1e
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-text/white-space/trailing-other-space-separators-break-spaces-005.html.ini
@@ -0,0 +1,2 @@
+[trailing-other-space-separators-break-spaces-005.html]
+  expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-transitions/idlharness-2.html.ini b/tests/wpt/meta-legacy-layout/css/css-transitions/idlharness-2.html.ini
new file mode 100644
index 00000000000..ec9b24fdaeb
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-transitions/idlharness-2.html.ini
@@ -0,0 +1,21 @@
+[idlharness-2.html]
+  [CSSTransition interface: existence and properties of interface object]
+    expected: FAIL
+
+  [CSSTransition interface object length]
+    expected: FAIL
+
+  [CSSTransition interface object name]
+    expected: FAIL
+
+  [CSSTransition interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [CSSTransition interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
+  [CSSTransition interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [CSSTransition interface: attribute transitionProperty]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/animations/calc-interpolation.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/animations/calc-interpolation.html.ini
index bb77fc551cd..eb75911dd38 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/animations/calc-interpolation.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/animations/calc-interpolation.html.ini
@@ -307,3 +307,9 @@
 
   [Web Animations: property <left> from [0px\] to [calc(infinity * 1px)\] at (1.25) should be [NaNpx\]]
     expected: FAIL
+
+  [CSS Animations: property <left> from [0px\] to [calc(infinity * 1px)\] at (0) should be [0px\]]
+    expected: FAIL
+
+  [Web Animations: property <left> from [0px\] to [calc(infinity * 1px)\] at (0) should be [0px\]]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/cap-invalidation.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/cap-invalidation.html.ini
new file mode 100644
index 00000000000..fe359e79ece
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-values/cap-invalidation.html.ini
@@ -0,0 +1,3 @@
+[cap-invalidation.html]
+  [CSS Values and Units Test: cap invalidation]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/exp-log-serialize.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/exp-log-serialize.html.ini
index f8246bbe7ab..4529c0f0855 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/exp-log-serialize.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/exp-log-serialize.html.ini
@@ -52,3 +52,6 @@
 
   ['scale(calc(log(0)))' as a computed value should serialize as 'matrix(-infinity, 0, 0, -infinity, 0, 0)'.]
     expected: FAIL
+
+  ['calc(log(0))' as a computed value should serialize as '0'.]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/rcap-invalidation.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/rcap-invalidation.html.ini
new file mode 100644
index 00000000000..7ffec102050
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/css-values/rcap-invalidation.html.ini
@@ -0,0 +1,3 @@
+[rcap-invalidation.html]
+  [CSS Values and Units Test: rcap invalidation]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/css-values/round-mod-rem-serialize.html.ini b/tests/wpt/meta-legacy-layout/css/css-values/round-mod-rem-serialize.html.ini
index c2cf0447912..c03f25d48cc 100644
--- a/tests/wpt/meta-legacy-layout/css/css-values/round-mod-rem-serialize.html.ini
+++ b/tests/wpt/meta-legacy-layout/css/css-values/round-mod-rem-serialize.html.ini
@@ -67,3 +67,21 @@
 
   ['scale(calc(rem(1,0)))' as a computed value should serialize as 'matrix(NaN, 0, 0, NaN, 0, 0)'.]
     expected: FAIL
+
+  ['calc(round(1,0))' as a computed value should serialize as '0'.]
+    expected: FAIL
+
+  ['scale(calc(round(1,0)))' as a computed value should serialize as 'matrix(0, 0, 0, 0, 0, 0)'.]
+    expected: FAIL
+
+  ['calc(mod(1,0))' as a computed value should serialize as '0'.]
+    expected: FAIL
+
+  ['scale(calc(mod(1,0)))' as a computed value should serialize as 'matrix(0, 0, 0, 0, 0, 0)'.]
+    expected: FAIL
+
+  ['calc(rem(1,0))' as a computed value should serialize as '0'.]
+    expected: FAIL
+
+  ['scale(calc(rem(1,0)))' as a computed value should serialize as 'matrix(0, 0, 0, 0, 0, 0)'.]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/cssom/getComputedStyle-insets-relpos-inline.html.ini b/tests/wpt/meta-legacy-layout/css/cssom/getComputedStyle-insets-relpos-inline.html.ini
new file mode 100644
index 00000000000..bcb8287b657
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/cssom/getComputedStyle-insets-relpos-inline.html.ini
@@ -0,0 +1,12 @@
+[getComputedStyle-insets-relpos-inline.html]
+  [OOF with left fixed right auto in relpos inline container]
+    expected: FAIL
+
+  [OOF with left auto right fixed in relpos inline container]
+    expected: FAIL
+
+  [OOF with left fixed right auto in relpos inline container with mixed directions]
+    expected: FAIL
+
+  [OOF with left auto right fixed in relpos inline container with mixed directions]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/selectors/invalidation/is-pseudo-containing-sibling-relationship-in-has.html.ini b/tests/wpt/meta-legacy-layout/css/selectors/invalidation/is-pseudo-containing-sibling-relationship-in-has.html.ini
new file mode 100644
index 00000000000..5a8d3be3eee
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/selectors/invalidation/is-pseudo-containing-sibling-relationship-in-has.html.ini
@@ -0,0 +1,3 @@
+[is-pseudo-containing-sibling-relationship-in-has.html]
+  [Initially red]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/css/selectors/invalidation/not-pseudo-containing-sibling-relationship-in-has.html.ini b/tests/wpt/meta-legacy-layout/css/selectors/invalidation/not-pseudo-containing-sibling-relationship-in-has.html.ini
new file mode 100644
index 00000000000..0159fa26f93
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/css/selectors/invalidation/not-pseudo-containing-sibling-relationship-in-has.html.ini
@@ -0,0 +1,3 @@
+[not-pseudo-containing-sibling-relationship-in-has.html]
+  [Initially red]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-images.sub.tentative.html.ini b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-images.sub.tentative.html.ini
index 36a410bfecb..eed6839e957 100644
--- a/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-images.sub.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/fetch/metadata/generated/css-images.sub.tentative.html.ini
@@ -149,3 +149,6 @@
 
   [border-image sec-fetch-site - HTTPS downgrade (header not sent)]
     expected: FAIL
+
+  [background-image sec-fetch-user - Not sent to non-trustworthy same-site destination]
+    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html.ini
new file mode 100644
index 00000000000..3e07e6b7d1f
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/empty-iframe-load-event.html.ini
@@ -0,0 +1,6 @@
+[empty-iframe-load-event.html]
+  [Check execution order from nested timeout]
+    expected: FAIL
+
+  [Check execution order on load handler]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html.ini
index 5aef7ce66ce..324db3d9b35 100644
--- a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/initial-empty-document/load-pageshow-events-window-open.html.ini
@@ -10,6 +10,3 @@
 
   [load event does not fire on window.open('about:blank?foo')]
     expected: FAIL
-
-  [load event does not fire on window.open('about:blank')]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.js.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.js.ini
index abd95eec1fd..e91aac214b4 100644
--- a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.js.ini
+++ b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/javascript-url-no-beforeunload.window.js.ini
@@ -4,7 +4,16 @@
     expected: NOTRUN
 
   [Navigating an opened window with an iframe via location.href to a javascript: URL must not fire beforeunload on the iframe: undefined completion]
-    expected: FAIL
+    expected: NOTRUN
 
   [Navigating an opened window via location.href to a javascript: URL must not fire beforeunload: string completion]
+    expected: NOTRUN
+
+  [Navigating an opened window via location.href to a javascript: URL must not fire beforeunload: undefined completion]
     expected: TIMEOUT
+
+  [Navigating an iframe via location.href to a javascript: URL must not fire beforeunload: string completion]
+    expected: NOTRUN
+
+  [Navigating an iframe via src="" to a javascript: URL after insertion must not fire beforeunload: string completion]
+    expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html.ini
new file mode 100644
index 00000000000..60a4fa51f8a
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/browsers/browsing-the-web/navigating-across-documents/replace-before-load/a-click.html.ini
@@ -0,0 +1,3 @@
+[a-click.html]
+  [aElement.click() before the load event must NOT replace]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/origin/cross-origin-objects/cross-origin-objects.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/origin/cross-origin-objects/cross-origin-objects.html.ini
index 90eb9ed743b..24c9e5d3926 100644
--- a/tests/wpt/meta-legacy-layout/html/browsers/origin/cross-origin-objects/cross-origin-objects.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/browsers/origin/cross-origin-objects/cross-origin-objects.html.ini
@@ -1,4 +1,5 @@
 [cross-origin-objects.html]
+  expected: TIMEOUT
   [Basic sanity-checking (cross-origin)]
     expected: FAIL
 
diff --git a/tests/wpt/meta-legacy-layout/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini b/tests/wpt/meta-legacy-layout/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini
deleted file mode 100644
index 4b4820d1729..00000000000
--- a/tests/wpt/meta-legacy-layout/html/browsers/the-window-object/open-close/creating_browsing_context_test_01.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[creating_browsing_context_test_01.html]
-  [first argument: absolute url]
-    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontStretch.settings.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontStretch.settings.html.ini
new file mode 100644
index 00000000000..1bf6b9bb1c6
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontStretch.settings.html.ini
@@ -0,0 +1,3 @@
+[2d.text.drawing.style.fontStretch.settings.html]
+  [Testing value setting of fontStretch in Canvas]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html.ini
index 5cdcce07c65..2a54f2f8814 100644
--- a/tests/wpt/meta-legacy-layout/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/canvas/element/manual/drawing-text-to-the-canvas/canvas.2d.disconnected.html.ini
@@ -1,2 +1,2 @@
 [canvas.2d.disconnected.html]
-  expected: FAIL
+  expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.html.ini b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.html.ini
new file mode 100644
index 00000000000..1bf6b9bb1c6
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.html.ini
@@ -0,0 +1,3 @@
+[2d.text.drawing.style.fontStretch.settings.html]
+  [Testing value setting of fontStretch in Canvas]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.worker.js.ini b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.worker.js.ini
new file mode 100644
index 00000000000..7acd5989def
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.worker.js.ini
@@ -0,0 +1,3 @@
+[2d.text.drawing.style.fontStretch.settings.worker.html]
+  [Testing value setting of fontStretch in Canvas]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini b/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
index 3cf3b15ec77..ba6b3eb447f 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/multipart-formdata.window.js.ini
@@ -179,8 +179,5 @@
   [multipart/form-data: Basic test (formdata event)]
     expected: FAIL
 
-  [multipart/form-data: 0x00 in name (normal form)]
-    expected: FAIL
-
   [multipart/form-data: \\r\\n in value (formdata event)]
     expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini b/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
index 6c23005cd9e..dc608d4d9a0 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/forms/form-submission-0/urlencoded2.window.js.ini
@@ -137,9 +137,6 @@
   [application/x-www-form-urlencoded: non-ASCII in filename (normal form)]
     expected: FAIL
 
-  [application/x-www-form-urlencoded: non-ASCII in filename (formdata event)]
-    expected: FAIL
-
   [application/x-www-form-urlencoded: characters not in encoding in name and value (normal form)]
     expected: FAIL
 
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
index 071b4378add..cc18f512574 100644
--- a/tests/wpt/meta-legacy-layout/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
@@ -11,3 +11,6 @@
 
   [Check that rel=noopener with target=_parent does a normal load]
     expected: FAIL
+
+  [Check that rel=noopener with target=_self does a normal load]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/defer-script/async-script.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/defer-script/async-script.html.ini
deleted file mode 100644
index 96f67cc4a82..00000000000
--- a/tests/wpt/meta-legacy-layout/html/semantics/scripting-1/the-script-element/defer-script/async-script.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[async-script.html?reload]
-  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/html/semantics/selectors/pseudo-classes/disabled.html.ini b/tests/wpt/meta-legacy-layout/html/semantics/selectors/pseudo-classes/disabled.html.ini
new file mode 100644
index 00000000000..1cf15a891bd
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/semantics/selectors/pseudo-classes/disabled.html.ini
@@ -0,0 +1,3 @@
+[disabled.html]
+  [':disabled' should match elements that are appended to a disabled fieldset dynamically]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini b/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini
new file mode 100644
index 00000000000..b8bdf33cb65
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/html/syntax/parsing/DOMContentLoaded-defer.html.ini
@@ -0,0 +1,3 @@
+[DOMContentLoaded-defer.html]
+  [The end: DOMContentLoaded and defer scripts]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry-different-function-realm.html.ini b/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry-different-function-realm.html.ini
index dbe1def99e3..7237f5792de 100644
--- a/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry-different-function-realm.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry-different-function-realm.html.ini
@@ -1,9 +1,10 @@
 [promise-job-entry-different-function-realm.html]
+  expected: TIMEOUT
   [Fulfillment handler on fulfilled promise]
     expected: FAIL
 
   [Rejection handler on pending-then-rejected promise]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Thenable resolution]
     expected: FAIL
@@ -12,4 +13,4 @@
     expected: FAIL
 
   [Fulfillment handler on pending-then-fulfilled promise]
-    expected: FAIL
+    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini b/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
index 4a48dd15a9d..1d71471b73c 100644
--- a/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
+++ b/tests/wpt/meta-legacy-layout/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/promise-rejection-events.html.ini
@@ -1,6 +1,7 @@
 [promise-rejection-events.html]
+  expected: TIMEOUT
   [delayed handling: delaying handling rejected promise created from createImageBitmap will cause both events to fire]
-    expected: FAIL
+    expected: TIMEOUT
 
   [unhandledrejection: from createImageBitmap which is UA triggered]
     expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/quirks/table-cell-width-calculation.html.ini b/tests/wpt/meta-legacy-layout/quirks/table-cell-width-calculation.html.ini
index a0431aa8312..d8fd7dec264 100644
--- a/tests/wpt/meta-legacy-layout/quirks/table-cell-width-calculation.html.ini
+++ b/tests/wpt/meta-legacy-layout/quirks/table-cell-width-calculation.html.ini
@@ -24,3 +24,5 @@
   [The table cell width calculation quirk, basic]
     expected: FAIL
 
+  [The table cell width calculation quirk, the quirk shouldn't apply for generated content]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/resource-timing/content-type-parsing.html.ini b/tests/wpt/meta-legacy-layout/resource-timing/content-type-parsing.html.ini
index 71ca4ed5411..49b17a921b5 100644
--- a/tests/wpt/meta-legacy-layout/resource-timing/content-type-parsing.html.ini
+++ b/tests/wpt/meta-legacy-layout/resource-timing/content-type-parsing.html.ini
@@ -94,10 +94,10 @@
     expected: FAIL
 
   [mime-type 16 : text/html;charset=\x0bgbk]
-    expected: FAIL
+    expected: TIMEOUT
 
   [mime-type 17 : text/html;charset=\x0cgbk]
-    expected: TIMEOUT
+    expected: NOTRUN
 
   [mime-type 18 : text/html;\x0bcharset=gbk]
     expected: NOTRUN
diff --git a/tests/wpt/meta-legacy-layout/webaudio/the-audio-api/the-audiocontext-interface/audiocontextoptions.html.ini b/tests/wpt/meta-legacy-layout/webaudio/the-audio-api/the-audiocontext-interface/audiocontextoptions.html.ini
index e86d0df261e..37dd5b66269 100644
--- a/tests/wpt/meta-legacy-layout/webaudio/the-audio-api/the-audiocontext-interface/audiocontextoptions.html.ini
+++ b/tests/wpt/meta-legacy-layout/webaudio/the-audio-api/the-audiocontext-interface/audiocontextoptions.html.ini
@@ -1,5 +1,5 @@
 [audiocontextoptions.html]
-  expected: CRASH
+  expected: TIMEOUT
   [X context = new AudioContext({sampleRate: 1}) did not throw an exception.]
     expected: FAIL
 
diff --git a/tests/wpt/meta-legacy-layout/webidl/ecmascript-binding/legacy-platform-object/Set.html.ini b/tests/wpt/meta-legacy-layout/webidl/ecmascript-binding/legacy-platform-object/Set.html.ini
index 7dd6d3787ce..749ef3cf268 100644
--- a/tests/wpt/meta-legacy-layout/webidl/ecmascript-binding/legacy-platform-object/Set.html.ini
+++ b/tests/wpt/meta-legacy-layout/webidl/ecmascript-binding/legacy-platform-object/Set.html.ini
@@ -1,3 +1,6 @@
 [Set.html]
   [must throw when assigning to a numeric property on an object which implements a indexed property getter but not a setter in strict mode]
     expected: FAIL
+
+  [must allow setting built-in property on a [LegacyOverrideBuiltIns\] object even if a named property shadows it]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/webmessaging/broadcastchannel/cross-partition.https.tentative.html.ini b/tests/wpt/meta-legacy-layout/webmessaging/broadcastchannel/cross-partition.https.tentative.html.ini
index 39d039a0132..04c2032c723 100644
--- a/tests/wpt/meta-legacy-layout/webmessaging/broadcastchannel/cross-partition.https.tentative.html.ini
+++ b/tests/wpt/meta-legacy-layout/webmessaging/broadcastchannel/cross-partition.https.tentative.html.ini
@@ -1,5 +1,5 @@
 [cross-partition.https.tentative.html]
-  expected: CRASH
+  expected: TIMEOUT
   [BroadcastChannel messages aren't received from a cross-partition iframe]
     expected: FAIL
 
diff --git a/tests/wpt/meta-legacy-layout/webmessaging/with-ports/018.html.ini b/tests/wpt/meta-legacy-layout/webmessaging/with-ports/018.html.ini
new file mode 100644
index 00000000000..b7b36c1d3a4
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/webmessaging/with-ports/018.html.ini
@@ -0,0 +1,4 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/websockets/mixed-content.https.any.js.ini b/tests/wpt/meta-legacy-layout/websockets/mixed-content.https.any.js.ini
new file mode 100644
index 00000000000..28d2669baf3
--- /dev/null
+++ b/tests/wpt/meta-legacy-layout/websockets/mixed-content.https.any.js.ini
@@ -0,0 +1,14 @@
+[mixed-content.https.any.worker.html]
+  [constructing an insecure WebSocket in a secure context should throw]
+    expected: FAIL
+
+
+[mixed-content.https.any.sharedworker.html]
+  expected: ERROR
+
+[mixed-content.https.any.serviceworker.html]
+  expected: ERROR
+
+[mixed-content.https.any.html]
+  [constructing an insecure WebSocket in a secure context should throw]
+    expected: FAIL
diff --git a/tests/wpt/meta-legacy-layout/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini b/tests/wpt/meta-legacy-layout/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini
deleted file mode 100644
index aa6c9e5b826..00000000000
--- a/tests/wpt/meta-legacy-layout/webstorage/localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[localstorage-about-blank-3P-iframe-opens-3P-window.partitioned.tentative.html]
-  expected: TIMEOUT
-  [StorageKey: test 3P about:blank window opened from a 3P iframe]
-    expected: TIMEOUT
diff --git a/tests/wpt/meta-legacy-layout/workers/constructors/Worker/Worker-constructor.html.ini b/tests/wpt/meta-legacy-layout/workers/constructors/Worker/Worker-constructor.html.ini
deleted file mode 100644
index 80f9a4f15b8..00000000000
--- a/tests/wpt/meta-legacy-layout/workers/constructors/Worker/Worker-constructor.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[Worker-constructor.html]
-  expected: ERROR
diff --git a/tests/wpt/meta-legacy-layout/workers/semantics/run-a-worker/003.html.ini b/tests/wpt/meta-legacy-layout/workers/semantics/run-a-worker/003.html.ini
index f4318e59a8d..e083d83077b 100644
--- a/tests/wpt/meta-legacy-layout/workers/semantics/run-a-worker/003.html.ini
+++ b/tests/wpt/meta-legacy-layout/workers/semantics/run-a-worker/003.html.ini
@@ -1,5 +1,4 @@
 [003.html]
   type: testharness
-  expected: ERROR
   [shared]
     expected: FAIL
diff --git a/tests/wpt/meta/MANIFEST.json b/tests/wpt/meta/MANIFEST.json
index c8a75b98977..dcfa14c9827 100644
--- a/tests/wpt/meta/MANIFEST.json
+++ b/tests/wpt/meta/MANIFEST.json
@@ -4145,6 +4145,13 @@
        {}
       ]
      ],
+     "getComputedStyle-insets-absolute-crash.html": [
+      "e28828bab1fe74955d97a0601fa1d64b98822273",
+      [
+       null,
+       {}
+      ]
+     ],
      "removerule-invalidation-crash.html": [
       "a83f43d5faf62338cfb442468a6e9e0e011c79f2",
       [
@@ -4957,7 +4964,7 @@
       ]
      ],
      "remove-editing-host-during-forwarddelete.html": [
-      "9c803dc132763213b089cdb490c6c9b2357ff027",
+      "2b23c34607c3241e863cf5ea118ff08d2a9286b8",
       [
        null,
        {}
@@ -30087,6 +30094,45 @@
        {}
       ]
      ],
+     "page-size-001-print.html": [
+      "19d72b0231f4240206f14564103a61c08008e17d",
+      [
+       null,
+       [
+        [
+         "/css/printing/page-size-001-print-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "page-size-002-print.html": [
+      "8ecf38107b87968692292a227812d7d6c8dbd625",
+      [
+       null,
+       [
+        [
+         "/css/printing/page-size-002-print-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "page-size-003-print.html": [
+      "805ff0e568a1b52fce857893a7d5a13078559730",
+      [
+       null,
+       [
+        [
+         "/css/printing/page-size-003-print-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "paused-animations-print.html": [
       "03ef1bab3c3430891ed9f37ca913c1339d36e682",
       [
@@ -31547,7 +31593,7 @@
        ]
       ],
       "abspos-containing-block-initial-007.xht": [
-       "5adbb6daf44aa5b246575d28230a8e700a8b7a4b",
+       "0b70e1e63e7bd8edf806bfd961ed37124886388f",
        [
         null,
         [
@@ -303512,7 +303558,7 @@
       ]
      ],
      "offset-path-coord-box-001.html": [
-      "d4e903e69dfc5535a109b84868e77af03a9c27ee",
+      "15f378e038615dafa6b6ddbf00ca3155f81686b9",
       [
        null,
        [
@@ -303541,7 +303587,7 @@
       ]
      ],
      "offset-path-coord-box-002.html": [
-      "0446e2caa16c43ece32a0f3c0659c3d227f01ce9",
+      "40b94727d373fd47859ff29d909a28c00276a6e3",
       [
        null,
        [
@@ -303554,7 +303600,7 @@
       ]
      ],
      "offset-path-coord-box-003.html": [
-      "d3ea7f92a8ed17521a957aebcd631906b0ceb86b",
+      "e793c18830df60560a6fa746081fd714ea9ad3ab",
       [
        null,
        [
@@ -303566,13 +303612,13 @@
        {}
       ]
      ],
-     "offset-path-geometry-box.html": [
-      "1e9399441c2ec31e868e7fca6d2fa6d1169f366c",
+     "offset-path-coord-box-004.html": [
+      "c84bae6832ee6154862d472e0997989ca54dad59",
       [
        null,
        [
         [
-         "/css/motion/offset-path-geometry-box-ref.html",
+         "/css/motion/offset-path-coord-box-004-ref.html",
          "=="
         ]
        ],
@@ -303895,7 +303941,7 @@
       ]
      ],
      "offset-path-shape-circle-001.html": [
-      "4874ba339298a18fb0a733e0254053579bbe50ac",
+      "2205d9d3f69b24c29347f92c870bfc014c648e93",
       [
        null,
        [
@@ -303911,7 +303957,7 @@
           [
            [
             0,
-            1
+            35
            ],
            [
             0,
@@ -303937,7 +303983,7 @@
       ]
      ],
      "offset-path-shape-circle-003.html": [
-      "1911d425a16997d6a6da3edb0474e527c8b1e2b6",
+      "ef69e7e41b623e00663e3512cab838d4abf4a4ae",
       [
        null,
        [
@@ -303953,11 +303999,11 @@
           [
            [
             0,
-            10
+            110
            ],
            [
             0,
-            20
+            500
            ]
           ]
          ]
@@ -303966,7 +304012,7 @@
       ]
      ],
      "offset-path-shape-circle-004.html": [
-      "f0a8523dd16f15075828d9bcbbf31f62a97ff35d",
+      "d22665636e62e7369b50b97da768e55c3d3f1918",
       [
        null,
        [
@@ -303975,11 +304021,27 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            80
+           ],
+           [
+            0,
+            310
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-circle-005.html": [
-      "0ca93306c609fbf77da660636b23d0aebfff2c02",
+      "2ba5bc1650a4e497124a948b3b5ceefa22ec84ee",
       [
        null,
        [
@@ -303988,11 +304050,27 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            18
+           ],
+           [
+            0,
+            400
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-ellipse-001.html": [
-      "b8254458d38d71038f47dd80ffddbd971190b665",
+      "be3ade57c6ddcfed63b9796c3c3eb0b32530fb26",
       [
        null,
        [
@@ -304008,7 +304086,7 @@
           [
            [
             0,
-            1
+            24
            ],
            [
             0,
@@ -304034,7 +304112,7 @@
       ]
      ],
      "offset-path-shape-ellipse-003.html": [
-      "540c56dba7b39ccb93f29e766c9178585c82238a",
+      "38ef5eb9bbfa9c955c2d4fd53440ab2d21c8a26e",
       [
        null,
        [
@@ -304043,7 +304121,23 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            25
+           ],
+           [
+            0,
+            450
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-ellipse-004.html": [
@@ -304060,7 +304154,7 @@
       ]
      ],
      "offset-path-shape-ellipse-005.html": [
-      "27eae4a5c491907c3455e5adae7c226190ee8f83",
+      "2b2c0abeff95564680680bd231752a8a0fa46544",
       [
        null,
        [
@@ -304069,7 +304163,23 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            18
+           ],
+           [
+            0,
+            400
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-inset-001.html": [
@@ -304102,7 +304212,7 @@
       ]
      ],
      "offset-path-shape-inset-002.html": [
-      "6279cdd35ebe1c1e977c67b30733fe82524a56dd",
+      "5ca502e8b1c30124204d9fd61d2db9fdcb630312",
       [
        null,
        [
@@ -304111,7 +304221,23 @@
          "=="
         ]
        ],
-       {}
+       {
+        "fuzzy": [
+         [
+          null,
+          [
+           [
+            0,
+            75
+           ],
+           [
+            0,
+            500
+           ]
+          ]
+         ]
+        ]
+       }
       ]
      ],
      "offset-path-shape-polygon-001.html": [
@@ -322967,7 +323093,7 @@
       ]
      ],
      "deferred-timeline-composited.html": [
-      "239c0ca50a97458f01402a104c40a4c4a8c2254e",
+      "e2437911b3993db5940e9113e077a005f71f7012",
       [
        null,
        [
@@ -323254,6 +323380,21 @@
        {}
       ]
      ]
+    },
+    "view-timelines": {
+     "range-boundary.html": [
+      "e2ca394ec0c9587b5e5b0be9eb1b2c3897a67764",
+      [
+       null,
+       [
+        [
+         "/scroll-animations/view-timelines/range-boundary-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ]
     }
    },
    "selection": {
@@ -326994,6 +327135,19 @@
    "web-animations": {
     "animation-model": {
      "keyframe-effects": {
+      "effect-value-opacity-replaced-effect.html": [
+       "bef3bd3e8d27fd721dd373e4f33cbae1f6b5b2c0",
+       [
+        null,
+        [
+         [
+          "/web-animations/animation-model/keyframe-effects/effect-value-opacity-replaced-effect-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "transform-and-opacity-on-inline-001.html": [
        "f76b53cd4c49152b1527bae481d76ace94243c7b",
        [
@@ -333560,6 +333714,12 @@
      ]
     }
    },
+   "captured-mouse-events": {
+    "META.yml": [
+     "90b8af85ee98035f893000e1acb4df59510bd10c",
+     []
+    ]
+   },
    "clear-site-data": {
     "META.yml": [
      "65ca96dbb9d774e97cc3a60f6b6dde952104893b",
@@ -333753,6 +333913,34 @@
      "66ad9243c7dc54e59052fa4fe64124cd63d0e84e",
      []
     ],
+    "clear-site-data": {
+     "clear-site-data-all.https.html.headers": [
+      "226bb1c3b10489842901a1184b2b8822d2976075",
+      []
+     ],
+     "clear-site-data-cache.https.html.headers": [
+      "226bb1c3b10489842901a1184b2b8822d2976075",
+      []
+     ],
+     "clear-site-data-cookies.https.html.headers": [
+      "226bb1c3b10489842901a1184b2b8822d2976075",
+      []
+     ],
+     "clear-site-data-storage.https.html.headers": [
+      "226bb1c3b10489842901a1184b2b8822d2976075",
+      []
+     ],
+     "resources": {
+      "check-client-hints.py": [
+       "f5172300028711ca36c1812230d4ce0148cb0390",
+       []
+      ],
+      "clear-site-data.py": [
+       "fd16be9fbcb0ffba3c440b5525e0580efd088f37",
+       []
+      ]
+     }
+    },
     "critical-ch": {
      "critical-ch.navigation-timing.restart.https.html.headers": [
       "b221a32886fffa1fd8dc5562fa211b8446db835b",
@@ -355423,7 +355611,7 @@
       ]
      },
      "fedcm-helper.sub.js": [
-      "79136b5958fa584842daf5455e6f419851842d00",
+      "e548e8e9c9d4d6aa53114368770455420e66f9d4",
       []
      ],
      "fedcm-iframe-level2.html": [
@@ -375733,6 +375921,14 @@
        "57bf3ddc5213d06e0975de38f330ffb7c441b268",
        []
       ],
+      "12x12-green.png": [
+       "1b9284844852a853624cc9c5848a6b1cef876e02",
+       []
+      ],
+      "1pxgreen-98pxred.png": [
+       "0f8571a94550493b483a4f0988fcb6ce1df1d412",
+       []
+      ],
       "1x1-green.png": [
        "b98ca0ba0a03c580ac339e4a3653539cfa8edc71",
        []
@@ -379985,7 +380181,7 @@
       []
      ],
      "align-items-baseline-row-vert-ref.html": [
-      "dec8ac3b353c97f55a40df7965a23b642c53149f",
+      "c9cbc39416d43ab5075287c23c45b8b4c3c7620f",
       []
      ],
      "anonymous-flex-item-split-ref.html": [
@@ -411635,18 +411831,18 @@
       []
      ],
      "offset-path-coord-box-001-ref.html": [
-      "e9a7fbb808feefff1838dcd1476b1829231ddbba",
+      "8b86ce26e1652bd3d06bbc0a7852084470cc7e17",
       []
      ],
      "offset-path-coord-box-002-ref.html": [
-      "b7bee52a1e389b84b3fe0f8ae0749ecf5a2647a5",
+      "41f65dc0164b896c3f84da20e6d8efee78c99d0b",
       []
      ],
      "offset-path-coord-box-003-ref.html": [
-      "5b9b445dd8fbc921416db58e95834aa699a9a3d2",
+      "0fa94d4c31b4fbeeb44603e1f1c3e50ca08b2bf2",
       []
      ],
-     "offset-path-geometry-box-ref.html": [
+     "offset-path-coord-box-004-ref.html": [
       "60870c815e140ac15502e723ea477678cdc848a7",
       []
      ],
@@ -411727,7 +411923,7 @@
       []
      ],
      "offset-path-shape-circle-001-ref.html": [
-      "7bc29af79c6ce74f1b7748f0234ac8346984e18e",
+      "6d6b64d32e3c622be1b27a9dae4c7293207fcab3",
       []
      ],
      "offset-path-shape-circle-002-ref.html": [
@@ -411735,11 +411931,11 @@
       []
      ],
      "offset-path-shape-circle-003-ref.html": [
-      "327d325137c399499b681f6552750ff3d008968c",
+      "c005984f768aed32b96779045addf9264c09da2b",
       []
      ],
      "offset-path-shape-circle-004-ref.html": [
-      "86c67dcdedcb2625216cd064384545113f2a96fc",
+      "925abdb8b4f04decd267bae83486b02730438eec",
       []
      ],
      "offset-path-shape-circle-005-ref.html": [
@@ -411747,7 +411943,7 @@
       []
      ],
      "offset-path-shape-ellipse-001-ref.html": [
-      "32236bbc239a98c6a512d64037fcda32a8c5e976",
+      "0e53fa2d355e16156f1f6e313910f688c7e97d0c",
       []
      ],
      "offset-path-shape-ellipse-002-ref.html": [
@@ -411755,7 +411951,7 @@
       []
      ],
      "offset-path-shape-ellipse-003-ref.html": [
-      "4a9fed4c86ab7d08bbe1d32ff74d26e42f50e675",
+      "2239210e49b563d4df210b2084d50d4c32a8d9bc",
       []
      ],
      "offset-path-shape-ellipse-004-ref.html": [
@@ -411771,7 +411967,7 @@
       []
      ],
      "offset-path-shape-inset-002-ref.html": [
-      "28195129f3282fadc8a2e691321425f886eef6c3",
+      "1bb649474aacd6d83601936bf12b918d2d1f9ed8",
       []
      ],
      "offset-path-shape-polygon-001-ref.html": [
@@ -411794,10 +411990,6 @@
       "7e9e07cccf3d26c8090ba98ee788565eca799b07",
       []
      ],
-     "offset-path-shape-ref.html": [
-      "a659b287fdab1ed7bda453c36c17140e0c2740f2",
-      []
-     ],
      "offset-path-shape-xywh-001-ref.html": [
       "12f9668dd5c8884368fe89104474d287bb04b28b",
       []
@@ -411944,6 +412136,18 @@
       "52ea6bfffcbf187acdeeeacdf960896a2d695986",
       []
      ],
+     "page-size-001-print-ref.html": [
+      "8bfd2717fa5def1e90513537fa34cf4f3ea2f9e4",
+      []
+     ],
+     "page-size-002-print-ref.html": [
+      "aa8cb6edcd242b8619caf2e67a35c7b4f2684daa",
+      []
+     ],
+     "page-size-003-print-ref.html": [
+      "38ea1508781e6313e9102bf4c307f91b290df4c4",
+      []
+     ],
      "paused-animations-print-ref.html": [
       "c22ecd174585100fd5faae8402f5a6e141b8264e",
       []
@@ -413694,6 +413898,14 @@
       "scroll_support.js": [
        "52c2f58723a2a39e9d652036d82d59475497c76e",
        []
+      ],
+      "scrollend-event-fires-to-iframe-inner-frame.html": [
+       "3657a8b87714f5b03f52def89847dd8df986f174",
+       []
+      ],
+      "scrollend-user-scroll-common.js": [
+       "4bf8f927ff2d7250326b75207831b1aa1e3975b9",
+       []
       ]
      }
     },
@@ -414391,7 +414603,7 @@
     },
     "include": {
      "editor-test-utils.js": [
-      "a4c24c94edb8e7b0660c7dfdac10b77add02a43c",
+      "24527d4a7931f7f41d34ec1150f82fe0867f6b3b",
       []
      ],
      "implementation.js": [
@@ -420562,7 +420774,7 @@
          []
         ],
         "remote-context-helper.js": [
-         "6978cef83211e5b5e65367c363a35e23b78bd25f",
+         "047d5cf821e5502f03736b2120541e7ff20dbb1d",
          []
         ]
        }
@@ -423982,7 +424194,7 @@
       "yaml": {
        "element": {
         "drawing-text-to-the-canvas.yaml": [
-         "7c3df028ac7b2940d98e41b87aec7eeef8fd6137",
+         "5d050477af1ad358eb40cc88b23389ba68d9d19a",
          []
         ],
         "meta.yaml": [
@@ -423990,7 +424202,7 @@
          []
         ],
         "text-styles.yaml": [
-         "76149894b6c4d6cff15b4b3462a87e2f1f1c3671",
+         "ee319c4fef183405b9bd855644941c32f995f833",
          []
         ],
         "the-canvas-element.yaml": [
@@ -424004,7 +424216,7 @@
          []
         ],
         "text.yaml": [
-         "80818bc29cfc8ba4607da1972fe7c6e58f9f10df",
+         "b66ae4f82068061bb3b635b2d387219f245708c5",
          []
         ],
         "the-offscreen-canvas.yaml": [
@@ -436304,11 +436516,11 @@
          []
         ],
         "penPointerEventProperties.html.ini": [
-         "d808b1793cfdbbb5c1acfdd5542c8e96d9de0e3d",
+         "f3a973c0f508da1e7a721481515887d2cabceeb0",
          []
         ],
         "penPointerEvents.html.ini": [
-         "39e05a8f0906b254649a4f4dcedd7c6535045064",
+         "d66b8470ea460bc3edce26a845941e4b740c4c1e",
          []
         ],
         "touchPointerEventProperties.html.ini": [
@@ -437389,8 +437601,12 @@
      "1e84e79cd1503946088888d02a5da45d5af7c5fe",
      []
     ],
+    "screen-capture-mouse-events.tentative.idl": [
+     "7b081cd9fd8a8a161c98b0bce2597c8a8ffd9df6",
+     []
+    ],
     "screen-capture.idl": [
-     "9abd4d2c1adf02fd063d24aeaeecb10e994fee1b",
+     "830b96d16fa976f739c73b11433ae0f3fac7b052",
      []
     ],
     "screen-orientation.idl": [
@@ -438156,11 +438372,11 @@
        []
       ],
       "modulepreload-in-early-hints.h2.py": [
-       "231b3bc69cb9dd47e3e298398214f3f9e0a433e9",
+       "cefd02a96a83acac7297b7dbab1f5eb9270a4dee",
        []
       ],
       "modulepreload-in-early-hints.html": [
-       "44aebf720a05d90db5f12477dbe83327c0e25a7b",
+       "64a02855040dbaa1af595487f80460f7106f2f0c",
        []
       ],
       "multiple-early-hints-responses.h2.py": [
@@ -444732,6 +444948,10 @@
         "b6460a486888a91c6cccc20d42d0426472406b0d",
         []
        ],
+       "assert-throws-dom.html": [
+        "4dd66b2372a06aa0fdd3d98cca73978b9833d599",
+        []
+       ],
        "force_timeout.html": [
         "2058fdb8621e7d55ea2b1e22839ff0afe999f7b8",
         []
@@ -445098,7 +445318,7 @@
      []
     ],
     "testdriver.js": [
-     "e582477da9ba9785a714c77fd2d302b9450c1398",
+     "a9ab7220aad069de3f6e2bf2c4fe34599658b899",
      []
     ],
     "testdriver.js.headers": [
@@ -445106,7 +445326,7 @@
      []
     ],
     "testharness.js": [
-     "112790bb1eeb8784a5a0e1cb29b1ae36be4c0c5c",
+     "413993089be6561cbad621c61ac4d4ab20bc8278",
      []
     ],
     "testharness.js.headers": [
@@ -445338,6 +445558,10 @@
      ]
     },
     "view-timelines": {
+     "range-boundary-ref.html": [
+      "057d0afabcdf579765cc1de8df4c63a6edeea8c4",
+      []
+     ],
      "testcommon.js": [
       "a798fe918ddc46781ad59d53e44f17cc5812bdf9",
       []
@@ -446894,7 +447118,7 @@
        []
       ],
       "fetch-access-control.py": [
-       "446af87b24974f77051161950113685b14ecd1c5",
+       "380a7d62225a1b0b473fdedf61d2ab565b7b2edf",
        []
       ],
       "fetch-canvas-tainting-double-write-worker.js": [
@@ -449252,7 +449476,7 @@
        []
       ],
       "utils.js": [
-       "f012d2d0e41ef61be278d05d6cd0fab1d0944f31",
+       "311d37f0a0198a0c0f669d603522ad17f26b9748",
        []
       ],
       "wake-lock.https.html": [
@@ -451289,7 +451513,7 @@
       ]
      },
      "commands.json": [
-      "769675e0ee42c6efc36fc1150778682f933a6465",
+      "cef6d22473b0fb3ea51f3477fcdab2f6afb26cd0",
       []
      ],
      "download.py": [
@@ -451297,7 +451521,7 @@
       []
      ],
      "item.py": [
-      "500ca109a74e3ef37031fa51240b69626cfa59dd",
+      "86f7bd6020b4e44f21359566fb65f4fe9ae3d775",
       []
      ],
      "jsonlib.py": [
@@ -451309,7 +451533,7 @@
       []
      ],
      "manifest.py": [
-      "f602727cb09b393d9877a04591f56fc28854cfee",
+      "0b00c71ac518967bdcd9c18d5a7faa657a343fd0",
       []
      ],
      "requirements.txt": [
@@ -451317,7 +451541,11 @@
       []
      ],
      "sourcefile.py": [
-      "386833722e7d64675b85a495e9664e32a4eb3fab",
+      "cf0bbf334b7f24597304dbb80dfb1d81ec609f31",
+      []
+     ],
+     "spec.py": [
+      "5148fceb3e63812c7801cfc089c3f1c6f5e3600a",
       []
      ],
      "testpaths.py": [
@@ -451338,11 +451566,11 @@
        []
       ],
       "test_manifest.py": [
-       "91b39f213a8e526c8fd6abd3d308c2d539ef3855",
+       "fc2314b8356a21074ba5f7aa0650cb15b59bd72d",
        []
       ],
       "test_sourcefile.py": [
-       "c0b281d244c9b0229108778cd9c26dfc3fcfeabc",
+       "d3411084f3ce681a456e8882a5c42cd5c57c84b2",
        []
       ],
       "test_utils.py": [
@@ -459305,11 +459533,11 @@
         []
        ],
        "client.py": [
-        "9bb03b34f96343bff885d89be37ddc2c3130b41a",
+        "c0505dde1d1ffd44ab3834fe15739cf3809f7b2d",
         []
        ],
        "error.py": [
-        "21c9f720a8eb3c004fcb9148b3f151057995279e",
+        "b681660f1a8eda58a0f51108af02b861035cd440",
         []
        ],
        "modules": {
@@ -459318,11 +459546,11 @@
          []
         ],
         "_module.py": [
-         "e28a83584a8ac4de6747a4c3894c9728d5682acb",
+         "060010b2a331f8c93b8b6f98828d133e68ebe8bf",
          []
         ],
         "browsing_context.py": [
-         "f2abb4764e213506b0bb22499dc19dc45338eb3f",
+         "a9b8d3f76824a86e62b8d351c9a88eae5794bca2",
          []
         ],
         "input.py": [
@@ -459334,12 +459562,12 @@
          []
         ],
         "session.py": [
-         "cdcef11b94f24cfa24232812126b28a12ed4c13a",
+         "fe1c0385105a13fda3087117779a1e8b83c8d07a",
          []
         ]
        },
        "transport.py": [
-        "2d5d8ee9224ff549cb9256741be79cf3e4b076ed",
+        "d61ebaddea7b7e3cac008781a8dcf1dc8326700d",
         []
        ]
       },
@@ -459709,7 +459937,7 @@
         []
        ],
        "firefox_android.py": [
-        "7065d07a647f88ed6526856e03ee86ab8635c623",
+        "bf69e8f6083fe592c72d1a43665ec9ca0356bbb2",
         []
        ],
        "ie.py": [
@@ -459777,7 +460005,7 @@
         []
        ],
        "base.py": [
-        "c537e8271c7efe2cb73c81c0e07596346e371e08",
+        "17be0cec39f25e5cc169740eb6c2f632d7454ac7",
         []
        ],
        "executorchrome.py": [
@@ -459789,7 +460017,7 @@
         []
        ],
        "executormarionette.py": [
-        "9c9c18735a64caa7614efb431ebe0ee9174896f9",
+        "95f186082042e322ccf53faa308f429f972523a1",
         []
        ],
        "executorselenium.py": [
@@ -460070,7 +460298,7 @@
        []
       ],
       "wptcommandline.py": [
-       "d4950e14c0cb9e555d284993967a4349dfe8d081",
+       "875ba7e66a90738bf763d9abb7d6092abdcffd98",
        []
       ],
       "wptlogging.py": [
@@ -461879,6 +462107,10 @@
       ]
      },
      "keyframe-effects": {
+      "effect-value-opacity-replaced-effect-ref.html": [
+       "792ca214cfb0c9b02609b484a95891bd1683bfe3",
+       []
+      ],
       "transform-and-opacity-on-inline-001-ref.html": [
        "1e7f250c48fb093160a509b3d98c0b265085179f",
        []
@@ -461932,7 +462164,7 @@
      ]
     },
     "testcommon.js": [
-     "8597ca28df9a6cc9c17fe21b40eab000bf606b05",
+     "a106cd9ac67464f16cb2a5c104e1dbf742bfc289",
      []
     ],
     "timing-model": {
@@ -463096,7 +463328,7 @@
      ],
      "bidi": {
       "__init__.py": [
-       "033978e19364d033bd68233a607073f1b4e0f294",
+       "821684620973f3f8a16557ae9839f9c8cb5574c7",
        []
       ],
       "browsing_context": {
@@ -463106,7 +463338,7 @@
        ],
        "capture_screenshot": {
         "__init__.py": [
-         "c4d8dd5252c3eefecbe9877f296c0a910d961a4a",
+         "64f25b9b861f879127a31f3aa8ed33fffbfb9caf",
          []
         ]
        },
@@ -463156,37 +463388,7 @@
         "__init__.py": [
          "9b7d28f6dacd441177e2810370709fdfc303f6f0",
          []
-        ],
-        "support": {
-         "black_dot.png": [
-          "613754cfaf74a7a2d86984231479d5671731f18a",
-          []
-         ],
-         "empty.html": [
-          "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
-          []
-         ],
-         "empty.js": [
-          "3918c74e446336be4151ea3bdad00f4d9e6df47a",
-          []
-         ],
-         "empty.svg": [
-          "e0af766e8ff5de780818b9d0712714dd5638e882",
-          []
-         ],
-         "other.html": [
-          "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
-          []
-         ],
-         "other.svg": [
-          "7c20a99a4b545aa204a8b09667c480fc7f8f1918",
-          []
-         ],
-         "red_dot.png": [
-          "c5916f289705642eec4975cf51458b9afeefe46c",
-          []
-         ]
-        }
+        ]
        },
        "print": {
         "__init__.py": [
@@ -463199,6 +463401,42 @@
          "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
          []
         ]
+       },
+       "set_viewport": {
+        "__init__.py": [
+         "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+         []
+        ]
+       },
+       "support": {
+        "black_dot.png": [
+         "613754cfaf74a7a2d86984231479d5671731f18a",
+         []
+        ],
+        "empty.html": [
+         "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+         []
+        ],
+        "empty.js": [
+         "3918c74e446336be4151ea3bdad00f4d9e6df47a",
+         []
+        ],
+        "empty.svg": [
+         "e0af766e8ff5de780818b9d0712714dd5638e882",
+         []
+        ],
+        "other.html": [
+         "e69de29bb2d1d6434b8b29ae775ad8c2e48c5391",
+         []
+        ],
+        "other.svg": [
+         "7c20a99a4b545aa204a8b09667c480fc7f8f1918",
+         []
+        ],
+        "red_dot.png": [
+         "c5916f289705642eec4975cf51458b9afeefe46c",
+         []
+        ]
        }
       },
       "errors": {
@@ -463852,7 +464090,7 @@
        []
       ],
       "fixtures.py": [
-       "ba166ae8da87de03ec68c9c112f67c0d2a6036f3",
+       "957be6b0f462b1a7f1b61bcfb48cadb01c5f8f7d",
        []
       ],
       "fixtures_bidi.py": [
@@ -463944,7 +464182,7 @@
        []
       ],
       "inline.py": [
-       "a0a8d3881ef5f48644c4ef1d6398dbad77dcc11f",
+       "26f0491d1a87a0977813ed8264c684d94ad0ae93",
        []
       ],
       "keys.py": [
@@ -464196,7 +464434,7 @@
        []
       ],
       "conv_transpose2d.json": [
-       "c7026f91ee5011747d1ba058e07ebc4a54a45a60",
+       "2fcb317268cb9b48731ae137f514f904918613de",
        []
       ],
       "cos.json": [
@@ -464343,6 +464581,10 @@
        "52ea57c7632d0d27b1745ddd4e983c37becf9832",
        []
       ],
+      "softplus.json": [
+       "2b26e1439e30cd8c2f7bd504d9553ab6eb38138a",
+       []
+      ],
       "softsign.json": [
        "e3208b18ad49a64dbbeb6a939dc69d2ea5ab3c43",
        []
@@ -464373,7 +464615,7 @@
       ]
      },
      "utils.js": [
-      "37748fd57a405e645798a3bb92e3138d48a9941a",
+      "920459275d4bceac6d501b750bfaacbaecdb2a4d",
       []
      ]
     }
@@ -464634,7 +464876,7 @@
      []
     ],
     "constants.sub.js": [
-     "d8e340d304b26fb51be84ba76f68acbd0924ada7",
+     "fd3c3b84b96a0a2537ac65dc4f626c4be03d9077",
      []
     ],
     "cookies": {
@@ -490991,6 +491233,36 @@
       {}
      ]
     ],
+    "clear-site-data": {
+     "clear-site-data-all.https.html": [
+      "4abc620c9dc3e8586f715d43a4f839c9821133fe",
+      [
+       null,
+       {}
+      ]
+     ],
+     "clear-site-data-cache.https.html": [
+      "bb1f8aa43e7930d0484e5cc8c18e2ba1c6b22d34",
+      [
+       null,
+       {}
+      ]
+     ],
+     "clear-site-data-cookies.https.html": [
+      "72b7f6794e9fceed910dfe0b309aa1fb16e5559f",
+      [
+       null,
+       {}
+      ]
+     ],
+     "clear-site-data-storage.https.html": [
+      "49578134f56767923415287c5ce60b8713713066",
+      [
+       null,
+       {}
+      ]
+     ]
+    },
     "critical-ch": {
      "critical-ch.navigation-timing.no-restart.https.html": [
       "a7c2ad705db844db61f6038ed0bba496a0598ce2",
@@ -502919,7 +503191,7 @@
      ]
     ],
     "fedcm-context.https.html": [
-     "7675866272116b72d4ce41c286d2c178847a5a4e",
+     "67ba8256341a1d95af14a8c83b3e68f568f0e13e",
      [
       null,
       {
@@ -504547,13 +504819,27 @@
        {}
       ]
      ],
-     "anchor-getComputedStyle.html": [
+     "anchor-getComputedStyle-001.html": [
       "6d77cf9a9d4cc34f5b2c787502f0d7753ff41c94",
       [
        null,
        {}
       ]
      ],
+     "anchor-getComputedStyle-002.html": [
+      "ae697fcc7498917e165b471ae169068880ef46e0",
+      [
+       null,
+       {}
+      ]
+     ],
+     "anchor-getComputedStyle-003.html": [
+      "f9fca976544f1aaac8d84e9acd918c7538b7e86d",
+      [
+       null,
+       {}
+      ]
+     ],
      "anchor-name-001.html": [
       "4caf3ee2100327b03b73c5180ac4ecc8a3761173",
       [
@@ -504911,6 +505197,13 @@
        {}
       ]
      ],
+     "anchor-scroll-005.html": [
+      "82f3a23ac9c79184cdb033305364b8cf215536b7",
+      [
+       null,
+       {}
+      ]
+     ],
      "anchor-scroll-basics.html": [
       "6b2d96708bd44808f0cb7ce10a1b52e708e09eba",
       [
@@ -505121,6 +505414,13 @@
        {}
       ]
      ],
+     "position-fallback-bounds-basics.html": [
+      "3b8b67bd978f3361512222f75cd71f08143007b1",
+      [
+       null,
+       {}
+      ]
+     ],
      "position-fallback-cascade-layer-reorder.html": [
       "ec1a64205c55788b021040b278ce1e51c2cbfc5e",
       [
@@ -507975,7 +508275,7 @@
       ]
      ],
      "scope-invalidation.html": [
-      "d5ba17159e0be6f6c41c4617dfbadef7fd733308",
+      "c5bdb6165852f445f870e78d5e77e812cff3a069",
       [
        null,
        {}
@@ -508267,7 +508567,7 @@
        ]
       ],
       "color-valid-color-mix-function.html": [
-       "d664525effd6c05f0d88d9028eefed13c7f352f3",
+       "361f7488a13c3d4f49747d11ab21487f740a490c",
        [
         null,
         {}
@@ -508999,14 +509299,14 @@
        ]
       ],
       "font-relative-units-dynamic.html": [
-       "63a07c61dbd31f1529f3fab10cf348c098a5ff30",
+       "9dfaceeed6b41c7f0366ac6288809efb9a3e1e52",
        [
         null,
         {}
        ]
       ],
       "font-relative-units.html": [
-       "7f711ebf96c60efd793bcf4c03b92450cbfcdcd8",
+       "ba4a60dda21962a8956180b601984942c3dc94ff",
        [
         null,
         {}
@@ -509068,6 +509368,13 @@
         {}
        ]
       ],
+      "inheritance-from-container.html": [
+       "97dfff2fd02fe6e825f3d547caeb88fefef2d0ca",
+       [
+        null,
+        {}
+       ]
+      ],
       "inline-size-and-min-width.html": [
        "8ddcbc614cae184b65295ab722ce392df4491f5d",
        [
@@ -509968,7 +510275,7 @@
     },
     "css-easing": {
      "cubic-bezier-timing-functions-output.html": [
-      "168f4cd907ec93d84bafcd11b00a7c78878569c8",
+      "4e14ef3bb3e5db60f501ff64ee87cc9401b372f7",
       [
        null,
        {}
@@ -510789,21 +511096,21 @@
        ]
       ],
       "flex-align-baseline-table-001.html": [
-       "b90f840b10acaaac3af7adf4d91a1d3c30762019",
+       "e804c33cb4c6abd7b50f7a82a1a22d8f9725b7de",
        [
         null,
         {}
        ]
       ],
       "flex-align-baseline-table-002.html": [
-       "9126e4246cad69d7efb753b5afa75f0e579909f0",
+       "c7d2c8af70400f65df3a36df4f4f3508e9041c48",
        [
         null,
         {}
        ]
       ],
       "flex-align-baseline-table-003.html": [
-       "2092a898540d02c794c75d65f63a58ecfd4a707f",
+       "15f35401756e4b189ee871c3f93e0e7549871b6d",
        [
         null,
         {}
@@ -512756,7 +513063,7 @@
       ]
      ],
      "format-specifiers-variations.html": [
-      "480396ea16f81e96b411b7c75a7cd33e758b3e34",
+      "32b8ebed67ebdfd5d10ef374e68d4effb8d9028d",
       [
        null,
        {}
@@ -512843,7 +513150,7 @@
        ]
       ],
       "font-face-src-list.html": [
-       "c87705109fd1b39731c5ef1c1e1aa6e4d89ea487",
+       "07aeacd2eeccbb383e45e6dd3cc61aecd6b1e8f3",
        [
         null,
         {}
@@ -517021,7 +517328,7 @@
        ]
       ],
       "grid-template-shorthand-areas-valid.html": [
-       "4a22784332f4aa95d5a2b08345dd3cde171e79e4",
+       "2d2b2433a4102326ecd2fbdd1c33d12c0ffae009",
        [
         null,
         {}
@@ -517314,7 +517621,7 @@
      },
      "image-set": {
       "image-set-computed.sub.html": [
-       "6d54fd0d09b4ade26a254a0a9c8cb5a76097e88a",
+       "532e48e6e869e322e6816f2f0d3289aeea7786c6",
        [
         null,
         {}
@@ -518914,6 +519221,13 @@
        {}
       ]
      ],
+     "hit-test-in-vertical-rl.html": [
+      "526e33d7924668782fd0116c5a13d2aeda570b08",
+      [
+       null,
+       {}
+      ]
+     ],
      "hit-test-transformed-child.html": [
       "ac0fd54c9f35dda0f01f5b8eb92fd7df7a3b5bb7",
       [
@@ -519334,14 +519648,14 @@
     },
     "css-nesting": {
      "cssom.html": [
-      "b5bd80d1b46e3cda7714f4e047737a3057c35fac",
+      "fa22b2fb45368ed37a2f971d58c6ecb8736b7360",
       [
        null,
        {}
       ]
      ],
      "invalid-inner-rules.html": [
-      "ffb53420e2dacfead07094be6c8521f87633c9ed",
+      "87c7c9a93481c95345223c2a7a4f8cab62529826",
       [
        null,
        {}
@@ -521186,7 +521500,7 @@
       ]
      ],
      "register-property-syntax-parsing.html": [
-      "16cbdf0c571a5f5d7fa328b6d9a6295bfd3a5db0",
+      "5bda1c4c5b23ecc95ac98ef939a9bbba62cf196d",
       [
        null,
        {}
@@ -522242,7 +522556,7 @@
      ],
      "input": {
       "keyboard.html": [
-       "7b0c6c057420e98b0122cbcb2f7502037e370e21",
+       "187ac0fb9e3ee5b12e73ec75d3cd4f465e6b319e",
        [
         null,
         {
@@ -529605,6 +529919,13 @@
        {}
       ]
      ],
+     "idlharness-2.html": [
+      "236bf5642bcb92f81c241e80cb34482c46185cf3",
+      [
+       null,
+       {}
+      ]
+     ],
      "idlharness.html": [
       "4cc7ee50eb4915fcf95843f7eeee266abfa7b81a",
       [
@@ -533142,7 +533463,7 @@
      ],
      "animations": {
       "calc-interpolation.html": [
-       "40379a13fb2736ed5839e55a58c7cba581155e77",
+       "f2c49a5cb9f503f204dd09e2e9542beff2db67c7",
        [
         null,
         {}
@@ -533352,6 +533673,13 @@
        {}
       ]
      ],
+     "cap-invalidation.html": [
+      "0becd0d093d680c1c18323da51fc39812c3709cd",
+      [
+       null,
+       {}
+      ]
+     ],
      "ch-empty-pseudo-recalc-on-font-load.html": [
       "7ad2b85fa469d6c43806e2e0fffee8af4ae4a96b",
       [
@@ -533416,7 +533744,7 @@
       ]
      ],
      "exp-log-serialize.html": [
-      "9eca44e68290dc8b96a915db6da6a843bab75f43",
+      "6108278d9624daad216f2bde26e6d65b7dd6f50f",
       [
        null,
        {}
@@ -533653,6 +533981,13 @@
        {}
       ]
      ],
+     "rcap-invalidation.html": [
+      "562161b4e5d474651ce91c39af90f8fcfd250c1f",
+      [
+       null,
+       {}
+      ]
+     ],
      "rch-invalidation.html": [
       "fa85e94c72778c424b5cf9f525baf119a40b9f65",
       [
@@ -533717,7 +534052,7 @@
       ]
      ],
      "round-mod-rem-serialize.html": [
-      "39569995b3ab09d834796f94bea9605dae7846f6",
+      "aa7c768b952b3fa4c28618fbbd59451b827e828f",
       [
        null,
        {}
@@ -535615,6 +535950,13 @@
        {}
       ]
      ],
+     "getComputedStyle-insets-grid.html": [
+      "08b55733a1595abca152e75cb24f0b1219fce8d1",
+      [
+       null,
+       {}
+      ]
+     ],
      "getComputedStyle-insets-nobox.html": [
       "236abf17f9cab8652b350c1168f2c27c1f84a631",
       [
@@ -535629,6 +535971,13 @@
        {}
       ]
      ],
+     "getComputedStyle-insets-relpos-inline.html": [
+      "d5f197ee9bc6cd53ec636889773438391d698120",
+      [
+       null,
+       {}
+      ]
+     ],
      "getComputedStyle-insets-static.html": [
       "aa7dbee95667a5e3b829b7d3774311da49c01deb",
       [
@@ -537783,7 +538132,7 @@
        ]
       ],
       "offset-path-interpolation-005.html": [
-       "13de65d8a73bc6eafcbffe6f3f0155f6ad6819e6",
+       "11234bf31a325fd43b8c2d32f9e503ff8770c62d",
        [
         null,
         {}
@@ -537855,7 +538204,7 @@
        ]
       ],
       "offset-anchor-parsing-valid.html": [
-       "97a3c54131f1af3b71c635ee5ff37be8a3502ff0",
+       "6cb4d44117fa6361fc87efdee22e79bc6df749b5",
        [
         null,
         {}
@@ -537932,7 +538281,7 @@
        ]
       ],
       "offset-position-parsing-valid.html": [
-       "032a5b42b46d5bae228e6a112c50623d76dbc1b1",
+       "bc0d19a460f4f22f9a061ae6932f31637c7231d6",
        [
         null,
         {}
@@ -539083,6 +539432,13 @@
         {}
        ]
       ],
+      "is-pseudo-containing-sibling-relationship-in-has.html": [
+       "bd5f96a3e27a3875ec2bf08a16f424ea851bee6e",
+       [
+        null,
+        {}
+       ]
+      ],
       "is.html": [
        "8490f096976340bc970ed2c6156fb60f433768e9",
        [
@@ -539150,6 +539506,13 @@
         {}
        ]
       ],
+      "not-pseudo-containing-sibling-relationship-in-has.html": [
+       "ec6d86198b063475fa237d7a39f7a699ec19a9ae",
+       [
+        null,
+        {}
+       ]
+      ],
       "quirks-mode-stylesheet-dynamic-add-001.html": [
        "3d7be982378fe2414f818d1682eca8f38f3575ac",
        [
@@ -540451,7 +540814,7 @@
      }
     },
     "throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml": [
-     "c0a7f622fbe2e56fba7eab1ea71ffde0fc269fca",
+     "c2913a1312e05beb8f198832a0030a84568157c7",
      [
       null,
       {}
@@ -540465,7 +540828,7 @@
      ]
     ],
     "throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml": [
-     "13f664550be01d7fab3757732634dd02e56c723e",
+     "4a3c8ec43b0f23cd890a1daeeeb4c20941c96b2a",
      [
       null,
       {}
@@ -542359,8 +542722,17 @@
         }
        ]
       ],
+      "scrollend-event-fires-to-iframe-window.html": [
+       "1a20751bd53b1d4e838fd13d8eed09bf9b3f6dfb",
+       [
+        null,
+        {
+         "testdriver": true
+        }
+       ]
+      ],
       "scrollend-event-for-user-scroll.html": [
-       "561c90ca94c6af8c0335a962a16273e44c2d3717",
+       "a06843a35e7ec9c827d70fd8f6eefa5f9bfdf724",
        [
         null,
         {
@@ -583367,7 +583739,7 @@
       },
       "read-media": {
        "cross-origin-video.html": [
-        "b99658facb29b59964c29e910e1435d201321fb4",
+        "5f3e95cce40e2a00611583d7623cad8a4a3eeb27",
         [
          null,
          {}
@@ -588488,6 +588860,13 @@
          {}
         ]
        ],
+       "2d.text.drawing.style.fontStretch.settings.html": [
+        "b19eced89171199dcfb57f1d5aea4b8f7e83c427",
+        [
+         null,
+         {}
+        ]
+       ],
        "2d.text.drawing.style.fontVariant.settings.html": [
         "cff5ad183a084adddc905ef76ff58e7a3ad6a5f9",
         [
@@ -588524,7 +588903,7 @@
         ]
        ],
        "2d.text.drawing.style.textRendering.settings.html": [
-        "03b35dfaa9d2af989f2a6251685dc88f7e379988",
+        "dee856842ae8e764ddf454e77749c098e8d8ce6d",
         [
          null,
          {}
@@ -588559,7 +588938,7 @@
         ]
        ],
        "2d.text.measure.baselines.html": [
-        "95fac522d941f234ff1208b518dadf66bcd9a4c5",
+        "f5d149239611a932da0785cabf6e18db653d1305",
         [
          null,
          {}
@@ -593523,14 +593902,14 @@
         ]
        ],
        "2d.text.draw.baseline.hanging.html": [
-        "3ad15f31501a0f47a3b95e5c1f8567fcf66a20d2",
+        "7b3a0a9373bc87de31ce263c5bd6d2fc482ef43b",
         [
          null,
          {}
         ]
        ],
        "2d.text.draw.baseline.ideographic.html": [
-        "8d402223a4f213b5ecfedf78f7b5d292305177cc",
+        "8da9aabb942a17ad8cd63534539be447f9f4d09e",
         [
          null,
          {}
@@ -604986,28 +605365,28 @@
         ]
        ],
        "2d.text.draw.baseline.hanging.html": [
-        "0bd15ff0068e7b238d359e772b2c0fad01e04b04",
+        "0b8228343289fe59d269b4ccf63dc48b6008edda",
         [
          null,
          {}
         ]
        ],
        "2d.text.draw.baseline.hanging.worker.js": [
-        "4a5ced7b38f95fc9cef8ef3b6290b8ebd8b6338b",
+        "fca74d6938184d68f11790b86fbdb0240cd11d8e",
         [
          "html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.html",
          {}
         ]
        ],
        "2d.text.draw.baseline.ideographic.html": [
-        "3a1d6e5159c052eadc9fd3073fd3b6dbc70344ef",
+        "c996444b860a079402dbeb20344578c94877e58d",
         [
          null,
          {}
         ]
        ],
        "2d.text.draw.baseline.ideographic.worker.js": [
-        "b39c10b74f0c3ce27eb79f81bef5903616722bd7",
+        "0ffa6fe299a0cb9a03778f0f32a57141074d0b7c",
         [
          "html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.html",
          {}
@@ -605345,6 +605724,20 @@
          {}
         ]
        ],
+       "2d.text.drawing.style.fontStretch.settings.html": [
+        "95405a18a5682c2eb954b37d150a0f0c54f31af4",
+        [
+         null,
+         {}
+        ]
+       ],
+       "2d.text.drawing.style.fontStretch.settings.worker.js": [
+        "ff10a742b5843ced57142d1678010082625a940f",
+        [
+         "html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.worker.html",
+         {}
+        ]
+       ],
        "2d.text.drawing.style.fontVariant.settings.html": [
         "9756d095ba74fd386b1249b2c1cf24c9381c29ba",
         [
@@ -605472,14 +605865,14 @@
         ]
        ],
        "2d.text.drawing.style.textRendering.settings.html": [
-        "47094dc91fa9a9fffbef111ccbc91d02b46cc61e",
+        "3fc07d547886caac218c9cac27d9a2c835d466ea",
         [
          null,
          {}
         ]
        ],
        "2d.text.drawing.style.textRendering.settings.worker.js": [
-        "ca5741de95404ef84cf4b174737d7f3625d8a8c5",
+        "c37f2e342f20d68898a656b97e96891b52aaa0b9",
         [
          "html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.html",
          {}
@@ -605682,14 +606075,14 @@
         ]
        ],
        "2d.text.measure.baselines.html": [
-        "e58f9be455b0cd573da530ff0b37a64117af2740",
+        "09fd0f408223fae715cfea3cdb00000e76f9fcb2",
         [
          null,
          {}
         ]
        ],
        "2d.text.measure.baselines.worker.js": [
-        "6f157f4e653ef609aceaab2043da6e71234bb86c",
+        "c6288a569da0172d7c5f43bdb6c08d3a0e5b2256",
         [
          "html/canvas/offscreen/text/2d.text.measure.baselines.worker.html",
          {}
@@ -624458,7 +624851,7 @@
        ]
       ],
       "popover-focus-2.html": [
-       "be6923e604a18cef5b5f2150ec8345e62bebfbd5",
+       "2fa1b7a23dee262e19c4c04f7243cecef1c0f0fd",
        [
         null,
         {
@@ -628703,7 +629096,7 @@
         ]
        ],
        "disabled.html": [
-        "8808675eb69b17c7763b407ea7ce4458e9e08fda",
+        "142a12dd122b555dcc6eee18334f796dc9269961",
         [
          null,
          {}
@@ -635741,7 +636134,7 @@
        ]
       ],
       "penPointerEventProperties.html": [
-       "ba6c15f022539cd1ec86c23559064e205746c5b1",
+       "05f85d299e9802344bb9705c9f0a7c60843667fe",
        [
         null,
         {
@@ -635750,7 +636143,7 @@
        ]
       ],
       "penPointerEvents.html": [
-       "7141fb56556795fdd25a8ed740c25b2d7edcac9d",
+       "f885ad501a24113131a7a930f93e7e279106fead",
        [
         null,
         {
@@ -638953,8 +639346,62 @@
        {}
       ]
      ],
+     "modulepreload-as-worker-cross-origin.h2.window.js": [
+      "3756d7f7fa24e943e7e90a42a71806faadba358d",
+      [
+       "loading/early-hints/modulepreload-as-worker-cross-origin.h2.window.html",
+       {
+        "script_metadata": [
+         [
+          "script",
+          "/common/utils.js"
+         ],
+         [
+          "script",
+          "resources/early-hints-helpers.sub.js"
+         ]
+        ]
+       }
+      ]
+     ],
+     "modulepreload-as-worker.h2.window.js": [
+      "2fd36dfbf3dc0898f020715afdfb0a71eeb6f81a",
+      [
+       "loading/early-hints/modulepreload-as-worker.h2.window.html",
+       {
+        "script_metadata": [
+         [
+          "script",
+          "/common/utils.js"
+         ],
+         [
+          "script",
+          "resources/early-hints-helpers.sub.js"
+         ]
+        ]
+       }
+      ]
+     ],
+     "modulepreload-cross-origin.h2.window.js": [
+      "3499b4d60d0743d1ce118a4e16b50e29f8428126",
+      [
+       "loading/early-hints/modulepreload-cross-origin.h2.window.html",
+       {
+        "script_metadata": [
+         [
+          "script",
+          "/common/utils.js"
+         ],
+         [
+          "script",
+          "resources/early-hints-helpers.sub.js"
+         ]
+        ]
+       }
+      ]
+     ],
      "modulepreload-in-early-hints.h2.window.js": [
-      "5627f04a0fefe1c6996e493ef280826c924ec7bd",
+      "bd592b0396dd7bcb5b8ba479ba06739b224f59d1",
       [
        "loading/early-hints/modulepreload-in-early-hints.h2.window.html",
        {
@@ -642199,14 +642646,14 @@
      ]
     ],
     "MediaStreamTrack-applyConstraints-fast.html": [
-     "38fabdcdfac2f898a2b2e485215611600b75433d",
+     "792179801779219749de642a6c36b90883a6f2b2",
      [
       null,
       {}
      ]
     ],
     "MediaStreamTrack-applyConstraints-getSettings.https.html": [
-     "c6401570b8ba3e370be5b8414efb8e8d158c9a4d",
+     "e18480aae1a8314548dc588880195b04d98a0b30",
      [
       null,
       {
@@ -642215,7 +642662,7 @@
      ]
     ],
     "MediaStreamTrack-applyConstraints-reject.https.html": [
-     "5050ed27dd8e31a84dba7428d6008a3ab7932e45",
+     "0bb4c9f74eb76fa5e8f701a1714601b619a0a9f7",
      [
       null,
       {
@@ -642233,7 +642680,7 @@
      ]
     ],
     "MediaStreamTrack-clone.https.html": [
-     "3ee21031eb016b47b5fc6ae0e74cf9ffe14b7234",
+     "8945c1d9ea02d75fd12fe7c10d40089f6d241a4c",
      [
       null,
       {
@@ -650437,7 +650884,7 @@
       ]
      ],
      "performance-navigation-timing-redirect-on-history.tentative.window.js": [
-      "acb70ebfae469d8fce37aa9acc54c335bf65cb67",
+      "7191456cc845bddcd774efdbb71e4981b91bd066",
       [
        "performance-timeline/not-restored-reasons/performance-navigation-timing-redirect-on-history.tentative.window.html",
        {
@@ -652875,6 +653322,15 @@
       }
      ]
     ],
+    "pointerevent_pointerout_no_pointer_movement.html": [
+     "856f2ce37cec59f70dc1a9ad4d3fe0436da3e4cd",
+     [
+      null,
+      {
+       "testdriver": true
+      }
+     ]
+    ],
     "pointerevent_pointerout_pen.html": [
      "210055e6539a369461aa30e609489310891570fd",
      [
@@ -670028,6 +670484,13 @@
     }
    },
    "screen-capture": {
+    "capture-controller-event-target.https.window.js": [
+     "379f35956837c47bc7d732af222189442fd40d0e",
+     [
+      "screen-capture/capture-controller-event-target.https.window.html",
+      {}
+     ]
+    ],
     "delegate-request.https.sub.html": [
      "8cc81c13832d9cd051e35a884d354a0835e58f81",
      [
@@ -670624,7 +671087,7 @@
       ]
      ],
      "animation-timeline-parsing.html": [
-      "f0061c5705dd78484133968c414bfea9103ff6f1",
+      "9e3c1078b5b416ac8402abe8901ca8e1c8d0a9fa",
       [
        null,
        {}
@@ -670638,7 +671101,7 @@
       ]
      ],
      "animation-timeline-view-functional-notation.tentative.html": [
-      "3ac94478e5955b09d2625c5cc8785514d8cee76f",
+      "d91dfe924b7756e111bdc9ef6a2fc8fefa5245d4",
       [
        null,
        {}
@@ -670876,7 +671339,7 @@
       ]
      ],
      "view-timeline-animation.html": [
-      "d1ea2f6c07f56e848ed9d178b85af484c668a59c",
+      "1bf034a742f3b30be5070b78536614c1b53823fe",
       [
        null,
        {}
@@ -670904,7 +671367,7 @@
       ]
      ],
      "view-timeline-inset-animation.html": [
-      "9ba88fde507aceae168e1c0b31d38f90ebe6c7f3",
+      "f9aa0f291895ba15bead50f6e7efbc328a41a18e",
       [
        null,
        {}
@@ -670932,7 +671395,7 @@
       ]
      ],
      "view-timeline-lookup.html": [
-      "98f11b85429c02af8033ad4af1515de7997c69bf",
+      "067ac1fa969f119e252d3415f172cbb6e6129d82",
       [
        null,
        {}
@@ -671108,7 +671571,7 @@
       ]
      ],
      "scroll-animation-effect-phases.tentative.html": [
-      "67bc36ca104258b970489898872d9932201e3823",
+      "41ae0e0612f61a88f023cde8f32ff5fcf095df37",
       [
        null,
        {
@@ -671212,21 +671675,21 @@
       ]
      ],
      "block-view-timeline-current-time-vertical-rl.tentative.html": [
-      "5bc459845229196bc075a0f27a6461b5519700fc",
+      "beb380060e1b51e86f9f1cfd1ad6885754cab0c4",
       [
        null,
        {}
       ]
      ],
      "block-view-timeline-current-time.tentative.html": [
-      "a6530f663121c2e0b97a1ec41de8c35326435525",
+      "c24d04412fc99f1d227d8ac6202acb985f3c67d8",
       [
        null,
        {}
       ]
      ],
      "block-view-timeline-nested-subject.tentative.html": [
-      "2cc8af882ff87cbcacb7cbb84aa78824dff532fa",
+      "6fdc7c68229a8abba8b1e6f0409e483eed94fe93",
       [
        null,
        {}
@@ -671247,12 +671710,63 @@
       ]
      ],
      "inline-view-timeline-current-time.tentative.html": [
-      "5b37798fe89035a5eb459ae479fc94ac42a05689",
+      "59d73d0cdf772475f0f0f573562ac840ae0b958d",
       [
        null,
        {}
       ]
      ],
+     "sticky": {
+      "view-timeline-sticky-offscreen-1.html": [
+       "d8756769c5179cdb7458958b81151baa17b17d6a",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-2.html": [
+       "2d098dcbe306ddf4e089d50fc4a0bdd408538f77",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-3.html": [
+       "c87dfc4dcb7d155f852e0d1a27cbcd427de27213",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-4.html": [
+       "f6b02ffb2eebfbbf3338f49edc3068282a9949d7",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-5.html": [
+       "380c01297e14571cd2a678c2547ddf1374d6a654",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-6.html": [
+       "94f0abc9b1e6662931e630c231334d5bff77b082",
+       [
+        null,
+        {}
+       ]
+      ],
+      "view-timeline-sticky-offscreen-7.html": [
+       "83115249fae7fb1ad263b6c5db4095701051bac9",
+       [
+        null,
+        {}
+       ]
+      ]
+     },
      "timeline-offset-in-keyframe.html": [
       "1168893854297560262e03c28bdf71580955b8ae",
       [
@@ -683381,7 +683895,7 @@
       ]
      ],
      "bad-strategies.any.js": [
-      "521fbffe3ab479bc276495398f935343df674110",
+      "409c63b8177e25222922d0a9eedb3e51a5a4a96a",
       [
        "streams/readable-streams/bad-strategies.any.html",
        {
@@ -689496,14 +690010,14 @@
        ]
       ],
       "SVGLength-px-with-context.html": [
-       "067948d5454d3b0ca715e58f72f7ab1840a4712d",
+       "b5c2149b692eea53d7565031d135317526736c44",
        [
         null,
         {}
        ]
       ],
       "SVGLength-px.html": [
-       "321be5912b84c3ad0df8a68231213311171386d5",
+       "25ce286197a49e9d06dc184b2fc8a89d15cd5ed5",
        [
         null,
         {}
@@ -700370,7 +700884,7 @@
      ]
     ],
     "partitioned-web-locks.tentative.https.html": [
-     "2f166e67bc13cc4976dfd10f854880b8f07a0e50",
+     "680474dea9838e643d612711bb405a2faf0c07fd",
      [
       null,
       {}
@@ -702693,6 +703207,15 @@
         null,
         {}
        ]
+      ],
+      "setSinkId-with-MediaElementAudioSourceNode.https.html": [
+       "af71782717ae07682f63ad6e3f45c74bb28b3415",
+       [
+        null,
+        {
+         "testdriver": true
+        }
+       ]
       ]
      },
      "the-mediastreamaudiodestinationnode-interface": {
@@ -704187,7 +704710,7 @@
      ]
     ],
     "encoded-video-chunk.any.js": [
-     "0cf0d8de4408dc1dc634b064c9a3fd313a04f813",
+     "9b60e59a79311dea38d8cb4cad1d3d1cebf2ff3a",
      [
       "webcodecs/encoded-video-chunk.any.html",
       {
@@ -705957,7 +706480,7 @@
      ]
     ],
     "videoDecoder-codec-specific.https.any.js": [
-     "4e0843646b7daed9829a21aa1243bbd2b697963f",
+     "31e14d81f3418879c5defd6f4953f7521ef5baaa",
      [
       "webcodecs/videoDecoder-codec-specific.https.any.html?av1",
       {
@@ -707103,7 +707626,7 @@
        ]
       ],
       "Set.html": [
-       "3134c8185906c1fcf0d5deeecf2ec668f73ef2c6",
+       "1390b51cd03b51cb15ceea1519fcd309bf914c86",
        [
         null,
         {}
@@ -709770,6 +710293,57 @@
       }
      ]
     ],
+    "softplus.https.any.js": [
+     "7096f64a043a91fba09c91df70114666c8980664",
+     [
+      "webnn/softplus.https.any.html",
+      {
+       "script_metadata": [
+        [
+         "title",
+         "test WebNN API softplus operation"
+        ],
+        [
+         "global",
+         "window,dedicatedworker"
+        ],
+        [
+         "script",
+         "./resources/utils.js"
+        ],
+        [
+         "timeout",
+         "long"
+        ]
+       ],
+       "timeout": "long"
+      }
+     ],
+     [
+      "webnn/softplus.https.any.worker.html",
+      {
+       "script_metadata": [
+        [
+         "title",
+         "test WebNN API softplus operation"
+        ],
+        [
+         "global",
+         "window,dedicatedworker"
+        ],
+        [
+         "script",
+         "./resources/utils.js"
+        ],
+        [
+         "timeout",
+         "long"
+        ]
+       ],
+       "timeout": "long"
+      }
+     ]
+    ],
     "softsign.https.any.js": [
      "61a7d5365fabca290eaeb400c961a107558e17ed",
      [
@@ -710389,7 +710963,7 @@
      ]
     ],
     "RTCPeerConnection-iceConnectionState.https.html": [
-     "5083be6cdfd16f5c2c67a80a7dbc9c2401f1a0a8",
+     "5361cb2c1af2b6cd9606798cca63b4e7e9f0a20b",
      [
       null,
       {
@@ -711788,7 +712362,7 @@
      ]
     ],
     "RTCRtpTransceiver-headerExtensionControl.html": [
-     "79eba02727bb35b745cee0a3b6246e37fb216e06",
+     "796d35dcb6bfffab5d62439da8dd93fc28aec9c9",
      [
       null,
       {}
@@ -722125,6 +722699,69 @@
       ]
      ]
     },
+    "mixed-content.https.any.js": [
+     "b7a6d8381da97b9b16cca3803717a66c8c7d69ad",
+     [
+      "websockets/mixed-content.https.any.html",
+      {
+       "script_metadata": [
+        [
+         "global",
+         "window,worker"
+        ],
+        [
+         "script",
+         "constants.sub.js"
+        ]
+       ]
+      }
+     ],
+     [
+      "websockets/mixed-content.https.any.serviceworker.html",
+      {
+       "script_metadata": [
+        [
+         "global",
+         "window,worker"
+        ],
+        [
+         "script",
+         "constants.sub.js"
+        ]
+       ]
+      }
+     ],
+     [
+      "websockets/mixed-content.https.any.sharedworker.html",
+      {
+       "script_metadata": [
+        [
+         "global",
+         "window,worker"
+        ],
+        [
+         "script",
+         "constants.sub.js"
+        ]
+       ]
+      }
+     ],
+     [
+      "websockets/mixed-content.https.any.worker.html",
+      {
+       "script_metadata": [
+        [
+         "global",
+         "window,worker"
+        ],
+        [
+         "script",
+         "constants.sub.js"
+        ]
+       ]
+      }
+     ]
+    ],
     "multi-globals": {
      "message-received.html": [
       "704b1e357b8ee2b37653888f6f9f456571a0ae58",
@@ -753885,6 +754522,15 @@
         {}
        ]
       ]
+     },
+     "subgrid": {
+      "repeat-auto-fill-009.html": [
+       "73b52a616b2237473d839960bbe933ed466b8ea2",
+       [
+        null,
+        {}
+       ]
+      ]
      }
     },
     "css-images": {
@@ -756134,7 +756780,7 @@
       "browsing_context": {
        "capture_screenshot": {
         "capture_screenshot.py": [
-         "7b26b2be0ce83a3eb54f2e9177a421a9520e7f1c",
+         "0ee4c8ed274ce31295d2cbf8f4229e7135ea2b28",
          [
           null,
           {}
@@ -756262,14 +756908,14 @@
        },
        "navigate": {
         "about_blank.py": [
-         "1f6d4774ae778fb007c6b718d21870f04655d710",
+         "55ca351297732a3cc69073f8d68f60459346e379",
          [
           null,
           {}
          ]
         ],
         "data_url.py": [
-         "8fd5695646d1b1e0f611f2f2c57dda595b05a4be",
+         "6d95beb66c000b4e2fbf2578ed3e8e5874ee736d",
          [
           null,
           {}
@@ -756283,21 +756929,21 @@
          ]
         ],
         "frame.py": [
-         "2c2131b6ee6f831fc318ca5a9903fc56689f30f2",
+         "4dcd88dfdb8513968a16ec21e4657e852e9785d4",
          [
           null,
           {}
          ]
         ],
         "hash.py": [
-         "d4862a62012d1b2c60e40a3f1c96e43bf0c448a9",
+         "d31c3f9a6ebcdf17e1916ccbc7ca5328861604e7",
          [
           null,
           {}
          ]
         ],
         "image.py": [
-         "b52ea9787c0ece95013d08d1db9e46a42c44e2ba",
+         "79030c9fe124678438221a6cb6166a5b525b2c8e",
          [
           null,
           {}
@@ -756311,14 +756957,14 @@
          ]
         ],
         "navigate.py": [
-         "a35f2728ef7b32d93846eae94d9dc2b794966ee2",
+         "142457028123c611f2eaf0b7ad45a02aba093f50",
          [
           null,
           {}
          ]
         ],
         "wait.py": [
-         "9a0b14e755e9cf9c2cc11fab8ae3cb48a1748e73",
+         "3a351e108908d949a276535bed4eeaa041dcd576",
          [
           null,
           {}
@@ -756395,12 +757041,51 @@
         ]
        },
        "reload": {
+        "frame.py": [
+         "ce9281583f2369013850d4c074a8e4c345cc453e",
+         [
+          null,
+          {}
+         ]
+        ],
         "invalid.py": [
          "35be21ef19fe2843d3d0e2c5fb837c09e998cad4",
          [
           null,
           {}
          ]
+        ],
+        "reload.py": [
+         "b6e957e8a8c5cb0b6e89b7bd6ab73b0b4fac56ef",
+         [
+          null,
+          {}
+         ]
+        ],
+        "wait.py": [
+         "2b581c2f0dbc0e34e63641318006aeed20963c6b",
+         [
+          null,
+          {
+           "timeout": "long"
+          }
+         ]
+        ]
+       },
+       "set_viewport": {
+        "invalid.py": [
+         "a649972ae18352ad0cce493b68cddbd86fb8ddb7",
+         [
+          null,
+          {}
+         ]
+        ],
+        "set_viewport.py": [
+         "1aa977be421c6dbea67408cca9a718049f023fa7",
+         [
+          null,
+          {}
+         ]
         ]
        }
       },
@@ -756720,14 +757405,14 @@
          ]
         ],
         "result.py": [
-         "a930cf2292fc690daaea447ccf0104cacad6c9bf",
+         "df989c407ee7dbf0a083e29697f9559fd733dbdd",
          [
           null,
           {}
          ]
         ],
         "result_node.py": [
-         "a2359b164ebbd6e3ef0abba42ad43106bc38e2d9",
+         "9d09b9fc04ace5d463976ee1a0af6d6b163e9b72",
          [
           null,
           {}
@@ -756747,6 +757432,13 @@
           {}
          ]
         ],
+        "serialization_options.py": [
+         "4084ec482093a88b8d55d59a719710908ad248bc",
+         [
+          null,
+          {}
+         ]
+        ],
         "strict_mode.py": [
          "1a9fd4f10823a526f27bc7aaeae32f1f263c9e13",
          [
@@ -756831,7 +757523,7 @@
          ]
         ],
         "invalid.py": [
-         "9923d7414e8497617b8f4c1f7e1f4edf31c1adc0",
+         "666bf4d06e0ef128132ef659c8ce039e3821f6fc",
          [
           null,
           {}
@@ -756845,14 +757537,14 @@
          ]
         ],
         "result.py": [
-         "afdfb5fe42f12b73780f17b4942000967eb420c5",
+         "faea80a86b60fa5939899640f5dfeaf69628fb67",
          [
           null,
           {}
          ]
         ],
         "result_node.py": [
-         "89ce95ed21da1088334e11238c296a565d27e498",
+         "a3ca316d0275f566e4bc913beae24ffae58af36d",
          [
           null,
           {}
diff --git a/tests/wpt/meta/css/css-color/animation/opacity-animation-ending-correctly-001.html.ini b/tests/wpt/meta/css/css-color/animation/opacity-animation-ending-correctly-001.html.ini
new file mode 100644
index 00000000000..304b1579ca4
--- /dev/null
+++ b/tests/wpt/meta/css/css-color/animation/opacity-animation-ending-correctly-001.html.ini
@@ -0,0 +1,2 @@
+[opacity-animation-ending-correctly-001.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/meta/css/css-color/parsing/color-valid-color-mix-function.html.ini b/tests/wpt/meta/css/css-color/parsing/color-valid-color-mix-function.html.ini
index 5fbefaad28c..1c3ee092b7b 100644
--- a/tests/wpt/meta/css/css-color/parsing/color-valid-color-mix-function.html.ini
+++ b/tests/wpt/meta/css/css-color/parsing/color-valid-color-mix-function.html.ini
@@ -1600,3 +1600,54 @@
 
   [e.style['color'\] = "color-mix(in hwb specified hue, hwb(320deg 30% 40%), hwb(20deg 30% 40%))" should set the property value]
     expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb, 70% red, 50% blue)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hsl, red 50%, blue)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hsl, red, blue 50%)" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hsl, 50% hsl(120deg 10% 20%), hsl(30deg 30% 40%))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hsl, hsl(120deg 10% 20%), 50% hsl(30deg 30% 40%))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hwb, 50% hwb(120deg 10% 20%), hwb(30deg 30% 40%))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in hwb, hwb(120deg 10% 20%), 50% hwb(30deg 30% 40%))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb, 50% color(srgb .1 .2 .3), color(srgb .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb, color(srgb .1 .2 .3), 50% color(srgb .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb-linear, 50% color(srgb-linear .1 .2 .3), color(srgb-linear .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in srgb-linear, color(srgb-linear .1 .2 .3), 50% color(srgb-linear .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz, 50% color(xyz .1 .2 .3), color(xyz .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz, color(xyz .1 .2 .3), 50% color(xyz .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz-d50, 50% color(xyz-d50 .1 .2 .3), color(xyz-d50 .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz-d50, color(xyz-d50 .1 .2 .3), 50% color(xyz-d50 .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz-d65, 50% color(xyz-d65 .1 .2 .3), color(xyz-d65 .5 .6 .7))" should set the property value]
+    expected: FAIL
+
+  [e.style['color'\] = "color-mix(in xyz-d65, color(xyz-d65 .1 .2 .3), 50% color(xyz-d65 .5 .6 .7))" should set the property value]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/css-transitions/idlharness-2.html.ini b/tests/wpt/meta/css/css-transitions/idlharness-2.html.ini
new file mode 100644
index 00000000000..ec9b24fdaeb
--- /dev/null
+++ b/tests/wpt/meta/css/css-transitions/idlharness-2.html.ini
@@ -0,0 +1,21 @@
+[idlharness-2.html]
+  [CSSTransition interface: existence and properties of interface object]
+    expected: FAIL
+
+  [CSSTransition interface object length]
+    expected: FAIL
+
+  [CSSTransition interface object name]
+    expected: FAIL
+
+  [CSSTransition interface: existence and properties of interface prototype object]
+    expected: FAIL
+
+  [CSSTransition interface: existence and properties of interface prototype object's "constructor" property]
+    expected: FAIL
+
+  [CSSTransition interface: existence and properties of interface prototype object's @@unscopables property]
+    expected: FAIL
+
+  [CSSTransition interface: attribute transitionProperty]
+    expected: FAIL
diff --git a/tests/wpt/meta/css/cssom/getComputedStyle-insets-grid.html.ini b/tests/wpt/meta/css/cssom/getComputedStyle-insets-grid.html.ini
new file mode 100644
index 00000000000..5e6a587fc95
--- /dev/null
+++ b/tests/wpt/meta/css/cssom/getComputedStyle-insets-grid.html.ini
@@ -0,0 +1,3 @@
+[getComputedStyle-insets-grid.html]
+  [Position absolute getComputedStyle left (for display: grid)]
+    expected: FAIL
diff --git a/tests/wpt/mozilla/meta-legacy-layout/css/stylesheet_media_queries.html.ini b/tests/wpt/mozilla/meta-legacy-layout/css/stylesheet_media_queries.html.ini
new file mode 100644
index 00000000000..77ca6b0688d
--- /dev/null
+++ b/tests/wpt/mozilla/meta-legacy-layout/css/stylesheet_media_queries.html.ini
@@ -0,0 +1,3 @@
+[stylesheet_media_queries.html]
+  [Media queries within stylesheets]
+    expected: FAIL
diff --git a/tests/wpt/mozilla/meta/css/dirty_viewport.html.ini b/tests/wpt/mozilla/meta/css/dirty_viewport.html.ini
deleted file mode 100644
index 799204061d4..00000000000
--- a/tests/wpt/mozilla/meta/css/dirty_viewport.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[dirty_viewport.html]
-  expected: FAIL
diff --git a/tests/wpt/mozilla/meta/css/pseudo_content_with_layers.html.ini b/tests/wpt/mozilla/meta/css/pseudo_content_with_layers.html.ini
deleted file mode 100644
index d1b7901791b..00000000000
--- a/tests/wpt/mozilla/meta/css/pseudo_content_with_layers.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[pseudo_content_with_layers.html]
-  expected: FAIL
diff --git a/tests/wpt/mozilla/meta/mozilla/iframe/resize_after_load.html.ini b/tests/wpt/mozilla/meta/mozilla/iframe/resize_after_load.html.ini
deleted file mode 100644
index 98894dcb405..00000000000
--- a/tests/wpt/mozilla/meta/mozilla/iframe/resize_after_load.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[resize_after_load.html]
-  expected: FAIL
diff --git a/tests/wpt/mozilla/meta/mozilla/task_queue_throttling.any.js.ini b/tests/wpt/mozilla/meta/mozilla/task_queue_throttling.any.js.ini
new file mode 100644
index 00000000000..d380380616c
--- /dev/null
+++ b/tests/wpt/mozilla/meta/mozilla/task_queue_throttling.any.js.ini
@@ -0,0 +1,3 @@
+[task_queue_throttling.any.html]
+  [Throttling the performance timeline task queue.]
+    expected: FAIL
diff --git a/tests/wpt/tests/captured-mouse-events/META.yml b/tests/wpt/tests/captured-mouse-events/META.yml
new file mode 100644
index 00000000000..90b8af85ee9
--- /dev/null
+++ b/tests/wpt/tests/captured-mouse-events/META.yml
@@ -0,0 +1,4 @@
+spec: https://screen-share.github.io/captured-mouse-events/
+suggested_reviewers:
+  - eladalon1983
+  - fred-wang
diff --git a/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-all.https.html b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-all.https.html
new file mode 100644
index 00000000000..4abc620c9dc
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-all.https.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<body>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+// Here's the set-up for this test:
+// Step 1 (first window) Open new window to verify that hints were set.
+// Step 2 (second window) Alert first window of client hints present.
+// Step 3 (first window) Asserts client hints were present.
+// Step 4 (first window) Navigate other window to page that clears all data.
+// Step 5 (second window) Navigate to a page that can check client hints still sent.
+// Step 6 (second window) Alert first window of client hints present.
+// Step 7 (first window) Asserts client hints were not present.
+async_test(t => {
+    var new_window;
+
+    // Step 3
+    window.addEventListener("message", t.step_func(e => {
+        assert_equals(e.data, "HadDeviceMemory");
+
+        // Step 7
+        window.addEventListener("message", t.step_func(e => {
+            assert_equals(e.data, "MissingDeviceMemory");
+            new_window.close();
+            t.done();
+        }), {once: true});
+
+        // Step 4
+        new_window.location.href = "/client-hints/clear-site-data/resources/clear-site-data.py";
+    }), {once: true});
+
+    // Step 1
+    new_window = window.open("/client-hints/clear-site-data/resources/check-client-hints.py");
+}, "Clear-Site-Data for * should remove all client hints.");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-all.https.html.headers b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-all.https.html.headers
new file mode 100644
index 00000000000..226bb1c3b10
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-all.https.html.headers
@@ -0,0 +1 @@
+Accept-CH: Sec-CH-Device-Memory
diff --git a/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cache.https.html b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cache.https.html
new file mode 100644
index 00000000000..bb1f8aa43e7
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cache.https.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<body>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+// Here's the set-up for this test:
+// Step 1 (first window) Open new window to verify that hints were set.
+// Step 2 (second window) Alert first window of client hints present.
+// Step 3 (first window) Asserts client hints were present.
+// Step 4 (first window) Navigate other window to page that clears cache data.
+// Step 5 (second window) Navigate to a page that can check client hints still sent.
+// Step 6 (second window) Alert first window of client hints present.
+// Step 7 (first window) Asserts client hints were not present.
+async_test(t => {
+    var new_window;
+
+    // Step 3
+    window.addEventListener("message", t.step_func(e => {
+        assert_equals(e.data, "HadDeviceMemory");
+
+        // Step 7
+        window.addEventListener("message", t.step_func(e => {
+            assert_equals(e.data, "MissingDeviceMemory");
+            new_window.close();
+            t.done();
+        }), {once: true});
+
+        // Step 4
+        new_window.location.href = "/client-hints/clear-site-data/resources/clear-site-data.py?target=cache";
+    }), {once: true});
+
+    // Step 1
+    new_window = window.open("/client-hints/clear-site-data/resources/check-client-hints.py");
+}, "Clear-Site-Data for cache should remove all client hints.");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cache.https.html.headers b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cache.https.html.headers
new file mode 100644
index 00000000000..226bb1c3b10
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cache.https.html.headers
@@ -0,0 +1 @@
+Accept-CH: Sec-CH-Device-Memory
diff --git a/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html
new file mode 100644
index 00000000000..72b7f6794e9
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<body>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+// Here's the set-up for this test:
+// Step 1 (first window) Open new window to verify that hints were set.
+// Step 2 (second window) Alert first window of client hints present.
+// Step 3 (first window) Asserts client hints were present.
+// Step 4 (first window) Navigate other window to page that clears cookies.
+// Step 5 (second window) Navigate to a page that can check client hints still sent.
+// Step 6 (second window) Alert first window of client hints present.
+// Step 7 (first window) Asserts client hints were not present.
+async_test(t => {
+    var new_window;
+
+    // Step 3
+    window.addEventListener("message", t.step_func(e => {
+        assert_equals(e.data, "HadDeviceMemory");
+
+        // Step 7
+        window.addEventListener("message", t.step_func(e => {
+            assert_equals(e.data, "MissingDeviceMemory");
+            new_window.close();
+            t.done();
+        }), {once: true});
+
+        // Step 4
+        new_window.location.href = "/client-hints/clear-site-data/resources/clear-site-data.py?target=cookies";
+    }), {once: true});
+
+    // Step 1
+    new_window = window.open("/client-hints/clear-site-data/resources/check-client-hints.py");
+}, "Clear-Site-Data for cookies should remove all client hints.");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html.headers b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html.headers
new file mode 100644
index 00000000000..226bb1c3b10
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-cookies.https.html.headers
@@ -0,0 +1 @@
+Accept-CH: Sec-CH-Device-Memory
diff --git a/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-storage.https.html b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-storage.https.html
new file mode 100644
index 00000000000..49578134f56
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-storage.https.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<body>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+// Here's the set-up for this test:
+// Step 1 (first window) Open new window to verify that hints were set.
+// Step 2 (second window) Alert first window of client hints present.
+// Step 3 (first window) Asserts client hints were present.
+// Step 4 (first window) Navigate other window to page that clears storage data.
+// Step 5 (second window) Navigate to a page that can check client hints still sent.
+// Step 6 (second window) Alert first window of client hints present.
+// Step 7 (first window) Asserts client hints were present.
+async_test(t => {
+    var new_window;
+
+    // Step 3
+    window.addEventListener("message", t.step_func(e => {
+        assert_equals(e.data, "HadDeviceMemory");
+
+        // Step 7
+        window.addEventListener("message", t.step_func(e => {
+            assert_equals(e.data, "HadDeviceMemory");
+            new_window.close();
+            t.done();
+        }), {once: true});
+
+        // Step 4
+        new_window.location.href = "/client-hints/clear-site-data/resources/clear-site-data.py?target=storage";
+    }), {once: true});
+
+    // Step 1
+    new_window = window.open("/client-hints/clear-site-data/resources/check-client-hints.py");
+}, "Clear-Site-Data for storage should not remove all client hints.");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-storage.https.html.headers b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-storage.https.html.headers
new file mode 100644
index 00000000000..226bb1c3b10
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/clear-site-data-storage.https.html.headers
@@ -0,0 +1 @@
+Accept-CH: Sec-CH-Device-Memory
diff --git a/tests/wpt/tests/client-hints/clear-site-data/resources/check-client-hints.py b/tests/wpt/tests/client-hints/clear-site-data/resources/check-client-hints.py
new file mode 100644
index 00000000000..f5172300028
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/resources/check-client-hints.py
@@ -0,0 +1,14 @@
+"""
+Step 2/6 (/client-hints/clear-site-data/clear-site-data-{}.https.html)
+"""
+def main(request, response):
+    if b"sec-ch-device-memory" in request.headers:
+        result = u"HadDeviceMemory"
+    else:
+        result = u"MissingDeviceMemory"
+    content = u'''
+        <script>
+            window.opener.postMessage("%s" , "*");
+        </script>''' % (result)
+    headers = [(b"Content-Type", b"text/html")]
+    return 200, headers, content
diff --git a/tests/wpt/tests/client-hints/clear-site-data/resources/clear-site-data.py b/tests/wpt/tests/client-hints/clear-site-data/resources/clear-site-data.py
new file mode 100644
index 00000000000..fd16be9fbcb
--- /dev/null
+++ b/tests/wpt/tests/client-hints/clear-site-data/resources/clear-site-data.py
@@ -0,0 +1,12 @@
+"""
+Step 5 (/client-hints/clear-site-data/clear-site-data-{}.https.html)
+"""
+def main(request, response):
+    content = u'''
+        <script>
+            window.onload = function() {
+                window.location.href = "/client-hints/clear-site-data/resources/check-client-hints.py";
+            };
+        </script>'''
+    headers = [(b"Content-Type", b"text/html"), (b"Clear-Site-Data", b'"%s"' % (request.GET.first(b"target", b"*")))]
+    return 200, headers, content
diff --git a/tests/wpt/tests/credential-management/fedcm-context.https.html b/tests/wpt/tests/credential-management/fedcm-context.https.html
index 76758662721..67ba8256341 100644
--- a/tests/wpt/tests/credential-management/fedcm-context.https.html
+++ b/tests/wpt/tests/credential-management/fedcm-context.https.html
@@ -16,7 +16,7 @@ import {request_options_with_mediation_required,
 
 fedcm_test(async t => {
   navigator.credentials.get(request_options_with_mediation_required());
-  const title = await fedcm_get_title_promise();
+  const title = await fedcm_get_title_promise(t);
   assert_true(title.toLowerCase().includes('sign in'));
 }, "FedCM call defaults to 'signin' context.");
 
@@ -28,13 +28,13 @@ fedcm_test(async t => {
 
 fedcm_test(async t => {
   navigator.credentials.get(request_options_with_context("manifest.py", "use"));
-  const title = await fedcm_get_title_promise();
+  const title = await fedcm_get_title_promise(t);
   assert_true(title.toLowerCase().includes('use'));
 }, "FedCM with 'use' context.");
 
 fedcm_test(async t => {
   navigator.credentials.get(request_options_with_context("manifest.py", "continue"));
-  const title = await fedcm_get_title_promise();
+  const title = await fedcm_get_title_promise(t);
   assert_true(title.toLowerCase().includes('continue'));
 }, "FedCM with 'continue' context.");
 </script>
diff --git a/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js b/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js
index 79136b5958f..e548e8e9c9d 100644
--- a/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js
+++ b/tests/wpt/tests/credential-management/support/fedcm-helper.sub.js
@@ -144,7 +144,7 @@ export function fedcm_get_title_promise(t) {
       const title = await window.test_driver.get_fedcm_dialog_title();
       resolve(title);
     } catch (ex) {
-      t.step_timeout(100, helper);
+      t.step_timeout(helper, 100);
     }
   }
   return new Promise(helper);
diff --git a/tests/wpt/tests/css/CSS2/abspos/abspos-containing-block-initial-007.xht b/tests/wpt/tests/css/CSS2/abspos/abspos-containing-block-initial-007.xht
index 5adbb6daf44..0b70e1e63e7 100644
--- a/tests/wpt/tests/css/CSS2/abspos/abspos-containing-block-initial-007.xht
+++ b/tests/wpt/tests/css/CSS2/abspos/abspos-containing-block-initial-007.xht
@@ -7,4 +7,4 @@
 </head><body style="position:absolute; margin:0; bottom:0; height:30px; border:10px solid orange;">
 
 
-</body></html>
\ No newline at end of file
+</body></html>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle.html b/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-001.html
similarity index 100%
rename from tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle.html
rename to tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-001.html
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-002.html b/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-002.html
new file mode 100644
index 00000000000..ae697fcc749
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-002.html
@@ -0,0 +1,112 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Tests getComputedStyle() resolving anchor() in fragmentation context</title>
+<link rel="help" href="https://drafts4.csswg.org/css-anchor-position-1">
+<link rel="help" href="https://drafts.csswg.org/cssom/#resolved-value">
+<link rel="author" href="mailto:xiaochengh@chromium.org">
+<link rel="stylesheet" href="/fonts/ahem.css">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<style>
+body {
+  margin: 0;
+}
+
+.cb {
+  position: relative;
+  background: lightgray;
+}
+
+.anchor {
+  anchor-name: --a;
+  background: orange;
+}
+
+.target {
+  position: absolute;
+  left: anchor(--a left);
+  right: anchor(--a right);
+  top: anchor(--a top);
+  bottom: anchor(--a bottom);
+  background: lime;
+  opacity: 0.5;
+}
+</style>
+
+<!-- anchor is fragmented in second and third columns -->
+<div class="multicol" id="test1">
+  <div class="cb">
+    <div class="spacer"></div>
+    <div class="anchor"></div>
+    <div class="target"></div>
+  </div>
+</div>
+<style>
+#test1.multicol {
+  column-count: 3;
+  column-width: 100px;
+  column-gap: 10px;
+  width: 320px;
+  height: 100px;
+}
+
+#test1 .cb {
+  width: 100px;
+  height: 300px;
+}
+
+#test1 .spacer {
+  height: 175px;
+}
+
+#test1 .anchor {
+  margin-left: 25px;
+  width: 50px;
+  height: 50px;
+}
+</style>
+<script>
+test(() => {
+  const target = test1.querySelector('.target');
+  const style = getComputedStyle(target);
+  assert_equals(style.left, '25px');
+  assert_equals(style.right, '-85px');
+  assert_equals(style.top, '100px');
+  assert_equals(style.bottom, '100px');
+}, 'getComputedStyle() with fragmented containing block in multicolumn layout');
+</script>
+
+
+<div id="test2" style="font: 20px/1 Ahem; width: 11em">
+  Lorem
+  <span class="cb">
+    ipsum <span class="anchor">dolor</span> sit
+    <span class="target"></span>
+  </span>
+  amet.<br>
+
+  Lorem
+  <span class="cb">
+    ipsum dolor <span class="anchor">sit</span>
+    <span class="target"></span>
+  </span>
+  amet.<br>
+</div>
+<script>
+test(() => {
+  const targets = test2.querySelectorAll('.target');
+
+  const style1 = getComputedStyle(targets[0]);
+  assert_equals(style1.top, '20px');
+  assert_equals(style1.bottom, '0px');
+  assert_equals(style1.left, '-120px');
+  assert_equals(style1.right, '80px');
+
+  const style2 = getComputedStyle(targets[1]);
+  assert_equals(style2.top, '20px');
+  assert_equals(style2.bottom, '0px');
+  assert_equals(style2.left, '0px');
+  assert_equals(style2.right, '0px');
+}, 'getComputedStyle() with fragmented containing block in inline layout');
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-003.html b/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-003.html
new file mode 100644
index 00000000000..f9fca976544
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-getComputedStyle-003.html
@@ -0,0 +1,92 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Tests that getComputedStyle() returns used position fallback style</title>
+<link rel="help" href="https://drafts4.csswg.org/css-anchor-position-1">
+<link rel="help" href="https://drafts.csswg.org/cssom/#resolved-value">
+<link rel="author" href="mailto:xiaochengh@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<style>
+body {
+  margin: 0;
+}
+
+.cb {
+  position: relative;
+  width: 400px;
+  height: 400px;
+  background: lightgray;
+}
+
+.anchor {
+  position: absolute;
+  width: 100px;
+  height: 100px;
+  background: orange;
+}
+
+.target {
+  position: absolute;
+  width: 100px;
+  height: 100px;
+  background: lime;
+  position-fallback: --pf;
+}
+
+@position-fallback --pf {
+  @try {
+    top: anchor(top);
+    left: anchor(right);
+  }
+
+  @try {
+    top: anchor(top);
+    right: anchor(left);
+  }
+}
+
+#anchor1 {
+  top: 0;
+  left: 0;
+  anchor-name: --a1;
+}
+
+#target1 {
+  anchor-default: --a1;
+}
+
+#anchor2 {
+  top: 200px;
+  right: 0;
+  anchor-name: --a2;
+}
+
+#target2 {
+  anchor-default: --a2;
+}
+</style>
+
+<div class="cb">
+  <div id="anchor1" class="anchor">anchor1</div>
+  <div id="anchor2" class="anchor">anchor2</div>
+
+  <div id="target1" class="target">target1</div>
+  <div id="target2" class="target">target2</div>
+</div>
+
+<script>
+test(() => {
+  const style1 = getComputedStyle(target1);
+  assert_equals(style1.top, '0px');
+  assert_equals(style1.left, '100px');
+  assert_equals(style1.right, '200px');
+}, 'getComputedStyle() should return and absolutize the first @try rule style for target1');
+
+test(() => {
+  const style2 = getComputedStyle(target2);
+  assert_equals(style2.top, '200px');
+  assert_equals(style2.left, '200px');
+  assert_equals(style2.right, '100px');
+}, 'getComputedStyle() should return and absolutize the second @try rule style for target2');
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/anchor-scroll-005.html b/tests/wpt/tests/css/css-anchor-position/anchor-scroll-005.html
new file mode 100644
index 00000000000..82f3a23ac9c
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/anchor-scroll-005.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<title>Tests 'anchor-scroll' with anchor in fixed-positioned scroller</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#scroll">
+<link rel="author" href="mailto:xiaochengh@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/test-common.js"></script>
+
+<style>
+body {
+  margin: 0;
+  height: 200vh;
+}
+
+#scroller {
+  position: fixed;
+  width: 200px;
+  height: 200px;
+  overflow-y: scroll;
+}
+
+#anchor {
+  position: absolute;
+  width: 100px;
+  height: 100px;
+  top: 200px;
+  background: orange;
+  anchor-name: --a;
+}
+
+#target {
+  position: fixed;
+  width: 100px;
+  height: 100px;
+  bottom: anchor(--a top);
+  anchor-scroll: --a;
+  background: lime;
+}
+</style>
+
+<div id=scroller>
+  <div id=anchor></div>
+</div>
+<div id=target></div>
+
+<script>
+promise_test(async () => {
+  await waitUntilNextAnimationFrame();
+  assert_equals(target.getBoundingClientRect().top, 100);
+
+  document.documentElement.scrollTop = 100;
+  await waitUntilNextAnimationFrame();
+  assert_equals(target.getBoundingClientRect().top, 100);
+}, 'Target should not scroll with viewport when anchor is in fixed-positioned scroller');
+</script>
diff --git a/tests/wpt/tests/css/css-anchor-position/position-fallback-bounds-basics.html b/tests/wpt/tests/css/css-anchor-position/position-fallback-bounds-basics.html
new file mode 100644
index 00000000000..3b8b67bd978
--- /dev/null
+++ b/tests/wpt/tests/css/css-anchor-position/position-fallback-bounds-basics.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<title>Tests basics of the 'position-fallback' property</title>
+<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#propdef-position-fallback-bounds">
+<link rel="author" href="mailto:xiaochengh@chromium.org">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/parsing-testcommon.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+<script src="/css/support/inheritance-testcommon.js"></script>
+<script src="/css/support/interpolation-testcommon.js"></script>
+
+<div id="container">
+  <div id="target"></div>
+</div>
+
+<script>
+// position-fallback-bounds: normal | <dashed-ident>
+test_valid_value('position-fallback-bounds', 'normal');
+test_valid_value('position-fallback-bounds', '--foo');
+test_invalid_value('position-fallback-bounds', 'foo-bar');
+test_invalid_value('position-fallback-bounds', '--foo --bar')
+test_invalid_value('position-fallback-bounds', '--foo, --bar')
+test_invalid_value('position-fallback-bounds', '100px');
+test_invalid_value('position-fallback-bounds', '100%');
+
+// Computed value: as specified
+test_computed_value('position-fallback-bounds', 'normal');
+test_computed_value('position-fallback-bounds', '--foo');
+
+// Initial: normal
+// Inherited: no
+assert_not_inherited('position-fallback-bounds', 'normal', '--foo');
+
+// Animation type: discrete
+test_no_interpolation({
+  property: 'position-fallback-bounds',
+  from: '--foo',
+  to: 'normal',
+});
+</script>
diff --git a/tests/wpt/tests/css/css-backgrounds/support/12x12-green.png b/tests/wpt/tests/css/css-backgrounds/support/12x12-green.png
new file mode 100644
index 00000000000..1b928484485
Binary files /dev/null and b/tests/wpt/tests/css/css-backgrounds/support/12x12-green.png differ
diff --git a/tests/wpt/tests/css/css-backgrounds/support/1pxgreen-98pxred.png b/tests/wpt/tests/css/css-backgrounds/support/1pxgreen-98pxred.png
new file mode 100644
index 00000000000..0f8571a9455
Binary files /dev/null and b/tests/wpt/tests/css/css-backgrounds/support/1pxgreen-98pxred.png differ
diff --git a/tests/wpt/tests/css/css-cascade/scope-invalidation.html b/tests/wpt/tests/css/css-cascade/scope-invalidation.html
index d5ba17159e0..c5bdb616585 100644
--- a/tests/wpt/tests/css/css-cascade/scope-invalidation.html
+++ b/tests/wpt/tests/css/css-cascade/scope-invalidation.html
@@ -103,9 +103,85 @@ test_scope_invalidation(document.currentScript, () => {
   assert_not_green(span);
   inner_div.classList.remove('b');
   assert_green(span);
-}, 'Element becoming scope limit');
+}, 'Parent element becoming scope limit');
 </script>
 
+<template>
+  <style>
+    @scope (.a) to (.b) {
+      span { background-color: green; }
+    }
+  </style>
+  <div class=a>
+    <div>
+      <span></span>
+    </div>
+  </div>
+</template>
+<script>
+test_scope_invalidation(document.currentScript, () => {
+  let span = main.querySelector('.a > div > span');
+  assert_green(span);
+  span.classList.add('b');
+  assert_not_green(span);
+  span.classList.remove('b');
+  assert_green(span);
+}, 'Subject element becoming scope limit');
+</script>
+
+<template>
+  <style>
+    @scope (.a) to (.b .c) {
+      span { background-color: green; }
+    }
+  </style>
+  <div class=a>
+    <div>
+      <div class=c>
+        <span></span>
+      </div>
+    </div>
+  </div>
+</template>
+<script>
+test_scope_invalidation(document.currentScript, () => {
+  let intermediate_div = main.querySelector('.a > div');
+  let span = main.querySelector('span');
+  assert_green(span);
+  intermediate_div.classList.add('b');
+  assert_not_green(span);
+  intermediate_div.classList.remove('b');
+  assert_green(span);
+}, 'Parent element affecting scope limit');
+</script>
+
+<template>
+  <style>
+    @scope (.a) to (.b ~ .c) {
+      span { background-color: green; }
+    }
+  </style>
+  <div class=a>
+    <div></div>
+    <div></div>
+    <div></div>
+    <div></div>
+    <div class=c>
+      <span></span>
+    </div>
+  </div>
+</template>
+<script>
+test_scope_invalidation(document.currentScript, () => {
+  let sibling_div = main.querySelector('.a > div');
+  let span = main.querySelector('span');
+  assert_green(span);
+  sibling_div.classList.add('b');
+  assert_not_green(span);
+  sibling_div.classList.remove('b');
+  assert_green(span);
+}, 'Sibling element affecting scope limit');
+</script>
 
 <template>
   <style>
diff --git a/tests/wpt/tests/css/css-color/parsing/color-valid-color-mix-function.html b/tests/wpt/tests/css/css-color/parsing/color-valid-color-mix-function.html
index d664525effd..361f7488a13 100644
--- a/tests/wpt/tests/css/css-color/parsing/color-valid-color-mix-function.html
+++ b/tests/wpt/tests/css/css-color/parsing/color-valid-color-mix-function.html
@@ -17,14 +17,19 @@
 <script>
     // https://github.com/w3c/csswg-drafts/issues/7302: Specified values shouldn't resolve keyword colors or calc values
     test_valid_value(`color`, `color-mix(in srgb, red, blue)`, `color-mix(in srgb, red, blue)`);
+    test_valid_value(`color`, `color-mix(in srgb, 70% red, 50% blue)`, `color-mix(in srgb, red 70%, blue)`);
     test_valid_value(`color`, `color-mix(in hsl, red, blue)`, `color-mix(in hsl, red, blue)`);
     test_valid_value(`color`, `color-mix(in hsl, red calc(20%), blue)`, `color-mix(in hsl, red calc(20%), blue)`);
     test_valid_value(`color`, `color-mix(in hsl, red calc(var(--v)*1%), blue)`, `color-mix(in hsl, red calc(var(--v)*1%), blue)`);
     test_valid_value(`color`, `color-mix(in hsl, currentcolor, blue)`, `color-mix(in hsl, currentcolor, blue)`);
     test_valid_value(`color`, `color-mix(in hsl, red 60%, blue 40%)`, `color-mix(in hsl, red 60%, blue)`);
+    test_valid_value(`color`, `color-mix(in hsl, red 50%, blue)`, `color-mix(in hsl, red, blue)`);
+    test_valid_value(`color`, `color-mix(in hsl, red, blue 50%)`, `color-mix(in hsl, red, blue)`);
     test_valid_value(`color`, `color-mix(in lch decreasing hue, red, hsl(120, 100%, 50%))`, `color-mix(in lch decreasing hue, red, rgb(0, 255, 0))`);
 
     test_valid_value(`color`, `color-mix(in hsl, hsl(120deg 10% 20%), hsl(30deg 30% 40%))`, `color-mix(in hsl, rgb(46, 56, 46), rgb(133, 102, 71))`);
+    test_valid_value(`color`, `color-mix(in hsl, 50% hsl(120deg 10% 20%), hsl(30deg 30% 40%))`, `color-mix(in hsl, rgb(46, 56, 46), rgb(133, 102, 71))`);
+    test_valid_value(`color`, `color-mix(in hsl, hsl(120deg 10% 20%), 50% hsl(30deg 30% 40%))`, `color-mix(in hsl, rgb(46, 56, 46), rgb(133, 102, 71))`);
     test_valid_value(`color`, `color-mix(in hsl, hsl(120deg 10% 20%) 25%, hsl(30deg 30% 40%))`, `color-mix(in hsl, rgb(46, 56, 46) 25%, rgb(133, 102, 71))`);
     test_valid_value(`color`, `color-mix(in hsl, 25% hsl(120deg 10% 20%), hsl(30deg 30% 40%))`, `color-mix(in hsl, rgb(46, 56, 46) 25%, rgb(133, 102, 71))`);
     test_valid_value(`color`, `color-mix(in hsl, hsl(120deg 10% 20%), 25% hsl(30deg 30% 40%))`, `color-mix(in hsl, rgb(46, 56, 46) 75%, rgb(133, 102, 71))`);
@@ -103,6 +108,8 @@
     test_valid_value(`color`, `color-mix(in hsl, oklch(0 0.399 336.3) 100%, rgb(0, 0, 0) 0%)`, `color-mix(in hsl, oklch(0 0.399 336.3) 100%, rgb(0, 0, 0))`);
 
     test_valid_value(`color`, `color-mix(in hwb, hwb(120deg 10% 20%), hwb(30deg 30% 40%))`, `color-mix(in hwb, rgb(26, 204, 26), rgb(153, 115, 77))`);
+    test_valid_value(`color`, `color-mix(in hwb, 50% hwb(120deg 10% 20%), hwb(30deg 30% 40%))`, `color-mix(in hwb, rgb(26, 204, 26), rgb(153, 115, 77))`);
+    test_valid_value(`color`, `color-mix(in hwb, hwb(120deg 10% 20%), 50% hwb(30deg 30% 40%))`, `color-mix(in hwb, rgb(26, 204, 26), rgb(153, 115, 77))`);
     test_valid_value(`color`, `color-mix(in hwb, hwb(120deg 10% 20%) 25%, hwb(30deg 30% 40%))`, `color-mix(in hwb, rgb(26, 204, 26) 25%, rgb(153, 115, 77))`);
     test_valid_value(`color`, `color-mix(in hwb, 25% hwb(120deg 10% 20%), hwb(30deg 30% 40%))`, `color-mix(in hwb, rgb(26, 204, 26) 25%, rgb(153, 115, 77))`);
     test_valid_value(`color`, `color-mix(in hwb, hwb(120deg 10% 20%), 25% hwb(30deg 30% 40%))`, `color-mix(in hwb, rgb(26, 204, 26) 75%, rgb(153, 115, 77))`);
@@ -377,6 +384,8 @@
       const resultColorSpace = colorSpace == "xyz" ? "xyz-d65" : colorSpace;
 
       test_valid_value(`color`, `color-mix(in ${colorSpace}, color(${colorSpace} .1 .2 .3), color(${colorSpace} .5 .6 .7))`, `color-mix(in ${resultColorSpace}, color(${resultColorSpace} 0.1 0.2 0.3), color(${resultColorSpace} 0.5 0.6 0.7))`);
+      test_valid_value(`color`, `color-mix(in ${colorSpace}, 50% color(${colorSpace} .1 .2 .3), color(${colorSpace} .5 .6 .7))`, `color-mix(in ${resultColorSpace}, color(${resultColorSpace} 0.1 0.2 0.3), color(${resultColorSpace} 0.5 0.6 0.7))`);
+      test_valid_value(`color`, `color-mix(in ${colorSpace}, color(${colorSpace} .1 .2 .3), 50% color(${colorSpace} .5 .6 .7))`, `color-mix(in ${resultColorSpace}, color(${resultColorSpace} 0.1 0.2 0.3), color(${resultColorSpace} 0.5 0.6 0.7))`);
       test_valid_value(`color`, `color-mix(in ${colorSpace}, color(${colorSpace} .1 .2 .3) 25%, color(${colorSpace} .5 .6 .7))`, `color-mix(in ${resultColorSpace}, color(${resultColorSpace} 0.1 0.2 0.3) 25%, color(${resultColorSpace} 0.5 0.6 0.7))`);
       test_valid_value(`color`, `color-mix(in ${colorSpace}, color(${colorSpace} .1 .2 .3), color(${colorSpace} .5 .6 .7) 25%)`, `color-mix(in ${resultColorSpace}, color(${resultColorSpace} 0.1 0.2 0.3) 75%, color(${resultColorSpace} 0.5 0.6 0.7))`);
       test_valid_value(`color`, `color-mix(in ${colorSpace}, color(${colorSpace} .1 .2 .3) 25%, color(${colorSpace} .5 .6 .7) 75%)`, `color-mix(in ${resultColorSpace}, color(${resultColorSpace} 0.1 0.2 0.3) 25%, color(${resultColorSpace} 0.5 0.6 0.7))`);
diff --git a/tests/wpt/tests/css/css-contain/container-queries/font-relative-units-dynamic.html b/tests/wpt/tests/css/css-contain/container-queries/font-relative-units-dynamic.html
index 63a07c61dbd..9dfaceeed6b 100644
--- a/tests/wpt/tests/css/css-contain/container-queries/font-relative-units-dynamic.html
+++ b/tests/wpt/tests/css/css-contain/container-queries/font-relative-units-dynamic.html
@@ -155,6 +155,30 @@ test_template(document.currentScript.previousElementSibling, (t) => {
 }, 'ch units respond to changes');
 </script>
 
+<template>
+  <style>
+    @import url("/fonts/ahem.css");
+    main { font-family: 'Ahem'; font-size: 10px; }
+    main.larger { font-size: 20px; }
+    @container (width <= 7cap) {
+      #test { color: green }
+    }
+  </style>
+  <div id="container">
+    <div>
+      <div id="test"></div>
+    </div>
+  </div>
+</template>
+<script>
+test_template(document.currentScript.previousElementSibling, (t) => {
+  t.add_cleanup(() => main.classList.remove("larger"));
+  assert_equals(getComputedStyle(main.querySelector("#test")).color, red);
+  main.classList.add("larger");
+  assert_equals(getComputedStyle(main.querySelector("#test")).color, green);
+}, 'cap units respond to changes');
+</script>
+
 <template>
   <style>
     :root { font-size: 10px; }
@@ -278,3 +302,27 @@ test_template(document.currentScript.previousElementSibling, (t) => {
   assert_equals(getComputedStyle(main.querySelector("#test")).color, green);
 }, 'ric units respond to changes');
 </script>
+
+<template>
+  <style>
+    @import url("/fonts/ahem.css");
+    :root { font-family: 'Ahem'; font-size: 10px; }
+    :root.larger { font-size: 20px; }
+    @container (width <= 7rcap) {
+      #test { color: green }
+    }
+  </style>
+  <div id="container">
+    <div style="font-family: monospace;">
+      <div id="test"></div>
+    </div>
+  </div>
+</template>
+<script>
+test_template(document.currentScript.previousElementSibling, (t) => {
+  t.add_cleanup(() => document.documentElement.classList.remove("larger"));
+  assert_equals(getComputedStyle(main.querySelector("#test")).color, red);
+  document.documentElement.classList.add("larger");
+  assert_equals(getComputedStyle(main.querySelector("#test")).color, green);
+}, 'rcap units respond to changes');
+</script>
diff --git a/tests/wpt/tests/css/css-contain/container-queries/font-relative-units.html b/tests/wpt/tests/css/css-contain/container-queries/font-relative-units.html
index 7f711ebf96c..ba4a60dda21 100644
--- a/tests/wpt/tests/css/css-contain/container-queries/font-relative-units.html
+++ b/tests/wpt/tests/css/css-contain/container-queries/font-relative-units.html
@@ -5,7 +5,8 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src="support/cq-testcommon.js"></script>
 <style>
-  :root { font-size: 10px; line-height: 10px; }
+  @import url("/fonts/ahem.css");
+  :root { font-family: 'Ahem'; font-size: 10px; line-height: 10px; }
   #em_container {
     container-type: inline-size;
     width: 100px;
@@ -17,6 +18,11 @@
     width: 10ex;
     height: 50rex;
   }
+  #cap_container {
+    container-type: inline-size;
+    font-size: 50px;
+    width: 10cap;
+  }
   #ch_container {
     container-type: inline-size;
     font-size: 50px;
@@ -38,10 +44,16 @@
   @container (width: 10rem) {
     #rem_test { color: green }
   }
+  @container (width: 10cap) {
+    #cap_test { color: green }
+  }
+  @container (width: 50rcap) {
+    #rcap_test { color: green }
+  }
   @container (width: 10ex) {
     #ex_test { color: green }
   }
-  @container (49rex <= width <= 100rex) {
+  @container (width: 50rex) {
     #rex_test { color: green }
   }
   @container (width: 10ch) {
@@ -67,6 +79,10 @@
   <div id="em_test"></div>
   <div id="rem_test"></div>
 </div>
+<div id="cap_container">
+  <div id="cap_test"></div>
+  <div id="rcap_test"></div>
+</div>
 <div id="ex_container">
   <div id="ex_test"></div>
   <div id="rex_test"></div>
@@ -97,4 +113,6 @@
   test(() => assert_equals(getComputedStyle(ric_test).color, green), "ric relative inline-size");
   test(() => assert_equals(getComputedStyle(lh_test).color, green), "lh relative inline-size");
   test(() => assert_equals(getComputedStyle(rlh_test).color, green), "rlh relative inline-size");
+  test(() => assert_equals(getComputedStyle(cap_test).color, green), "cap relative inline-size");
+  test(() => assert_equals(getComputedStyle(rcap_test).color, green), "rcap relative inline-size");
 </script>
diff --git a/tests/wpt/tests/css/css-contain/container-queries/inheritance-from-container.html b/tests/wpt/tests/css/css-contain/container-queries/inheritance-from-container.html
new file mode 100644
index 00000000000..97dfff2fd02
--- /dev/null
+++ b/tests/wpt/tests/css/css-contain/container-queries/inheritance-from-container.html
@@ -0,0 +1,43 @@
+<!doctype html>
+<title>Containers and inheritance</title>
+<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-queries">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="support/cq-testcommon.js"></script>
+<style>
+#outer {
+    visibility: hidden;
+}
+#outer.visible {
+    visibility: visible;
+}
+#container {
+    container-type: inline-size;
+}
+#container.visible {
+    visibility: visible;
+}
+</style>
+<div id=outer><div id=container><span id=inner>PASS</span></div></div>
+<script>
+setup(() => assert_implements_container_queries());
+
+test((t) => {
+    assert_equals(getComputedStyle(inner).visibility, "hidden");
+}, "Initial state");
+
+test((t) => {
+    outer.classList.add("visible");
+    assert_equals(getComputedStyle(inner).visibility, "visible");
+}, "Test that visibility inherits via container after mutation");
+
+test((t) => {
+    outer.classList.remove("visible");
+    assert_equals(getComputedStyle(inner).visibility, "hidden");
+}, "Return to initial state");
+
+test((t) => {
+    container.classList.add("visible");
+    assert_equals(getComputedStyle(inner).visibility, "visible");
+}, "Test that visibility inherits from container after mutation");
+</script>
diff --git a/tests/wpt/tests/css/css-easing/cubic-bezier-timing-functions-output.html b/tests/wpt/tests/css/css-easing/cubic-bezier-timing-functions-output.html
index 168f4cd907e..4e14ef3bb3e 100644
--- a/tests/wpt/tests/css/css-easing/cubic-bezier-timing-functions-output.html
+++ b/tests/wpt/tests/css/css-easing/cubic-bezier-timing-functions-output.html
@@ -13,12 +13,15 @@ href="https://drafts.csswg.org/css-easing/#cubic-bezier-timing-functions">
 <script>
 'use strict';
 
+// Precision of major rendering engines' layout systems.
+const epsilon = 0.02;
+
 function assert_style_left_at(animation, time, easingFunction) {
   animation.currentTime = time;
   var portion = time / animation.effect.getTiming()['duration'];
   assert_approx_equals(pxToNum(getComputedStyle(animation.effect.target).left),
                        easingFunction(portion) * 100,
-                       0.01,
+                       epsilon,
                        'The left of the animation should be approximately ' +
                        easingFunction(portion) * 100 + ' at ' + time + 'ms');
 }
diff --git a/tests/wpt/tests/css/css-flexbox/align-items-baseline-row-vert-ref.html b/tests/wpt/tests/css/css-flexbox/align-items-baseline-row-vert-ref.html
index dec8ac3b353..c9cbc39416d 100644
--- a/tests/wpt/tests/css/css-flexbox/align-items-baseline-row-vert-ref.html
+++ b/tests/wpt/tests/css/css-flexbox/align-items-baseline-row-vert-ref.html
@@ -27,7 +27,6 @@
   background: cyan;
   width: 40px;
   height: 40px;
-  writing-mode: horizontal-tb;
 }
 #target > :nth-child(4) {
   background: lime;
diff --git a/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-001.html b/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-001.html
index b90f840b10a..e804c33cb4c 100644
--- a/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-001.html
+++ b/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-001.html
@@ -5,14 +5,14 @@
   display: flex;
   position: relative;
 }
-.target > div, td {
+.target > div, .target td {
   background: hotpink;
   font-size: 20px;
   line-height: 0;
 }
-table { border-spacing: 0; }
-td { padding: 5px; min-width: 5px; min-height: 5px; }
-caption {
+.target table { border-spacing: 0; }
+.target td { padding: 5px; min-width: 5px; min-height: 5px; }
+.target caption {
   margin: 10px;
   background: lime;
   block-size: 20px;
diff --git a/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-002.html b/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-002.html
index 9126e4246ca..c7d2c8af704 100644
--- a/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-002.html
+++ b/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-002.html
@@ -6,14 +6,14 @@
   position: relative;
   writing-mode: vertical-rl;
 }
-.target > div, td {
+.target > div, .target td {
   background: hotpink;
   font-size: 20px;
   line-height: 0;
 }
-table { border-spacing: 0; }
-td { padding: 5px; min-width: 5px; min-height: 5px; }
-caption {
+.target table { border-spacing: 0; }
+.target td { padding: 5px; min-width: 5px; min-height: 5px; }
+.target caption {
   margin: 10px;
   background: lime;
   block-size: 20px;
diff --git a/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-003.html b/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-003.html
index 2092a898540..15f35401756 100644
--- a/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-003.html
+++ b/tests/wpt/tests/css/css-flexbox/alignment/flex-align-baseline-table-003.html
@@ -6,14 +6,14 @@
   position: relative;
   writing-mode: vertical-lr;
 }
-.target > div, td {
+.target > div, .target td {
   background: hotpink;
   font-size: 20px;
   line-height: 0;
 }
-table { border-spacing: 0; }
-td { padding: 5px; min-width: 5px; min-height: 5px; }
-caption {
+.target table { border-spacing: 0; }
+.target td { padding: 5px; min-width: 5px; min-height: 5px; }
+.target caption {
   margin: 10px;
   background: lime;
   block-size: 20px;
diff --git a/tests/wpt/tests/css/css-fonts/format-specifiers-variations.html b/tests/wpt/tests/css/css-fonts/format-specifiers-variations.html
index 480396ea16f..32b8ebed67e 100644
--- a/tests/wpt/tests/css/css-fonts/format-specifiers-variations.html
+++ b/tests/wpt/tests/css/css-fonts/format-specifiers-variations.html
@@ -36,7 +36,7 @@ function runTestOnFormatSpecifiers(formats, expectFail) {
             if (!expectFail) {
                 return fontFace.load();
             } else {
-                return promise_rejects_dom(testDetails, "NetworkError", fontFace.load());
+                return promise_rejects_dom(testDetails, "SyntaxError", fontFace.load());
             }
         }, (expectFail ? "Do not load" : "Load") + " Ahem with format " + formats[i], {
             "format": formats[i]
diff --git a/tests/wpt/tests/css/css-fonts/parsing/font-face-src-list.html b/tests/wpt/tests/css/css-fonts/parsing/font-face-src-list.html
index c87705109fd..07aeacd2eec 100644
--- a/tests/wpt/tests/css/css-fonts/parsing/font-face-src-list.html
+++ b/tests/wpt/tests/css/css-fonts/parsing/font-face-src-list.html
@@ -19,6 +19,7 @@
     { src: 'url(not a valid url/bar.ttf), url(foo.ttf)', valid: true },
     { src: 'url(foo.ttf) format(bad), url(foo.ttf)', valid: true },
     { src: 'url(foo.ttf) tech(unknown), url(foo.ttf)', valid: true },
+    { src: 'url(foo.ttf) tech(color-COLRv0) otherfunc(othervalue), url(foo.ttf)', valid: true },
     { src: 'url(foo.ttf), url(something.ttf) format(broken)', valid: true },
     { src: '/* an empty component */, url(foo.ttf)', valid: true },
     { src: 'local(""), url(foo.ttf), unparseable-garbage, local("another font name")', valid: true },
@@ -27,6 +28,7 @@
     { src: 'local("textfont") format(opentype), local("emoji") tech(color-COLRv0)', valid: false },
     { src: 'local(), /*empty*/, url(should be quoted.ttf), junk', valid: false },
     { src: 'url(foo.ttf) format(unknown), url(bar.ttf) tech(broken)', valid: false },
+    { src: 'url(foo.ttf) tech(color-COLRv0) otherfunc(othervalue), junk', valid: false },
   ];
 
   for (let t of tests) {
diff --git a/tests/wpt/tests/css/css-grid/parsing/grid-template-shorthand-areas-valid.html b/tests/wpt/tests/css/css-grid/parsing/grid-template-shorthand-areas-valid.html
index 4a22784332f..2d2b2433a41 100644
--- a/tests/wpt/tests/css/css-grid/parsing/grid-template-shorthand-areas-valid.html
+++ b/tests/wpt/tests/css/css-grid/parsing/grid-template-shorthand-areas-valid.html
@@ -26,8 +26,8 @@ function testValidGridTemplate(valueGridTemplate, valueGridAreas, serializedGrid
   }, `grid-template: ${valueGridTemplate} and "grid-template-areas: ${valueGridAreas};" should be valid.`);
 }
 
-testValidGridTemplate("none / 1px",  "\"a\"");
-testValidGridTemplate("none / none", "\"a\"", "none");
+testValidGridTemplate("none / 1px",  "\"a\"", "");
+testValidGridTemplate("none / none", "\"a\"", "");
 testValidGridTemplate("auto / 1px", "\"a a a\"", "\"a a a\" / 1px");
 testValidGridTemplate("auto / auto", "\"a a a\"", "\"a a a\" / auto");
 testValidGridTemplate("10px 20px 30px / 40px 50px 60px 70px",
@@ -35,4 +35,4 @@ testValidGridTemplate("10px 20px 30px / 40px 50px 60px 70px",
                       "\"a . b .\" 10px \"c d . e\" 20px \"f g h .\" 30px / 40px 50px 60px 70px");
 </script>
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/wpt/tests/css/css-grid/subgrid/repeat-auto-fill-009.html b/tests/wpt/tests/css/css-grid/subgrid/repeat-auto-fill-009.html
new file mode 100644
index 00000000000..73b52a616b2
--- /dev/null
+++ b/tests/wpt/tests/css/css-grid/subgrid/repeat-auto-fill-009.html
@@ -0,0 +1,121 @@
+<!DOCTYPE HTML>
+<html>
+  <link rel="author" title="Kurt Catti-Schmidt" href="mailto:kschmi@microsoft.com">
+  <link rel="help" href="https://drafts.csswg.org/css-grid-2/#resolved-track-list">
+  <head>
+    <style>
+html,body {
+  color:black; background-color:white; font:10px/1 monospace; padding:0; margin:0;
+}
+
+.wrapper {
+  display: inline-block;
+  width: 100px;
+  border: 1px solid;
+}
+
+.grid {
+  display: grid;
+  grid-auto-rows: 8px;
+  background: grey;
+}
+
+.fill-0a  { grid-template-columns: subgrid repeat(auto-fill, [y]) [z] }
+.fill-0b  { grid-template-columns: subgrid [x] repeat(auto-fill, [y]) [z] }
+.fill-0c  { grid-template-columns: subgrid [x] [y] repeat(auto-fill, [z]) }
+.fill-0d  { grid-template-columns: subgrid repeat(auto-fill, [x]) }
+.fill-0e  { grid-template-columns: subgrid [x] }
+
+.grid > :nth-child(2n)   {  background: black; }
+.grid > :nth-child(2n+1) {  background: pink; }
+
+    </style>
+  </head>
+<body>
+
+<div class="wrapper"><div class="grid fill-0a">
+  <div style="grid-column:y 5"></div>
+  <div style="grid-column:y 4"></div>
+  <div style="grid-column:y 3"></div>
+  <div style="grid-column:y 2"></div>
+  <div style="grid-column:y 1"></div>
+  <div style="grid-column:y -1"></div>
+  <div style="grid-column:y -2"></div>
+  <div style="grid-column:y -3"></div>
+  <div style="grid-column:y -4"></div>
+  <div style="grid-column:y -5"></div>
+</div></div>
+
+<div class="wrapper"><div class="grid fill-0b">
+  <div style="grid-column:y 5"></div>
+  <div style="grid-column:y 4"></div>
+  <div style="grid-column:y 3"></div>
+  <div style="grid-column:y 2"></div>
+  <div style="grid-column:y 1"></div>
+  <div style="grid-column:y -1"></div>
+  <div style="grid-column:y -2"></div>
+  <div style="grid-column:y -3"></div>
+  <div style="grid-column:y -4"></div>
+  <div style="grid-column:y -5"></div>
+</div></div>
+
+<div class="wrapper"><div class="grid fill-0c">
+  <div style="grid-column:y 5"></div>
+  <div style="grid-column:y 4"></div>
+  <div style="grid-column:y 3"></div>
+  <div style="grid-column:y 2"></div>
+  <div style="grid-column:y 1"></div>
+  <div style="grid-column:y -1"></div>
+  <div style="grid-column:y -2"></div>
+  <div style="grid-column:y -3"></div>
+  <div style="grid-column:y -4"></div>
+  <div style="grid-column:y -5"></div>
+</div></div>
+
+<div class="wrapper"><div class="grid fill-0d">
+  <div style="grid-column:y 5"></div>
+  <div style="grid-column:y 4"></div>
+  <div style="grid-column:y 3"></div>
+  <div style="grid-column:y 2"></div>
+  <div style="grid-column:y 1"></div>
+  <div style="grid-column:y -1"></div>
+  <div style="grid-column:y -2"></div>
+  <div style="grid-column:y -3"></div>
+  <div style="grid-column:y -4"></div>
+  <div style="grid-column:y -5"></div>
+</div></div>
+
+<div class="wrapper"><div class="grid fill-0e">
+  <div style="grid-column:y 5"></div>
+  <div style="grid-column:y 4"></div>
+  <div style="grid-column:y 3"></div>
+  <div style="grid-column:y 2"></div>
+  <div style="grid-column:y 1"></div>
+  <div style="grid-column:y -1"></div>
+  <div style="grid-column:y -2"></div>
+  <div style="grid-column:y -3"></div>
+  <div style="grid-column:y -4"></div>
+  <div style="grid-column:y -5"></div>
+</div></div>
+
+<script>
+  const expectedResults = [
+    "none",
+    "none",
+    "none",
+    "none",
+    "none",
+  ];
+  [...document.querySelectorAll('.grid')].forEach(function(grid, i) {
+    let actual = window.getComputedStyle(grid)['grid-template-columns'];
+    let expected = expectedResults[i];
+    if (actual != expected) {
+      let err = "Unexpected getComputedStyle value for grid " + i + " with className '" + grid.className + "':" +
+      " Actual: \"" + actual + "\", Expected: \"" + expected + "\"";
+      document.body.appendChild(document.createTextNode(err));
+      document.body.appendChild(document.createElement("br"));
+    }
+  });
+</script>
+
+</body>
diff --git a/tests/wpt/tests/css/css-images/image-set/image-set-computed.sub.html b/tests/wpt/tests/css/css-images/image-set/image-set-computed.sub.html
index 6d54fd0d09b..532e48e6e86 100644
--- a/tests/wpt/tests/css/css-images/image-set/image-set-computed.sub.html
+++ b/tests/wpt/tests/css/css-images/image-set/image-set-computed.sub.html
@@ -38,7 +38,16 @@ function test_calculated_resolution_units() {
   test_computed_value_variants(
     'background-image',
     "image-set(url('http://{{host}}/example.png') calc(37dpcm + 0.79532dpcm))",
-    'image-set(url("http://{{host}}/example.png") 1dppx)'
+    [
+      'image-set(url("http://{{host}}/example.png") 1dppx)',
+      'image-set(url("http://{{host}}/example.png") 1.000001dppx)'
+    ]
+  );
+
+  test_computed_value_variants(
+    'background-image',
+    "image-set(url('http://{{host}}/example.png') calc(-1 * 1x))",
+    'image-set(url("http://{{host}}/example.png") 0dppx)'
   );
 }
 
diff --git a/tests/wpt/tests/css/css-multicol/hit-test-in-vertical-rl.html b/tests/wpt/tests/css/css-multicol/hit-test-in-vertical-rl.html
new file mode 100644
index 00000000000..526e33d7924
--- /dev/null
+++ b/tests/wpt/tests/css/css-multicol/hit-test-in-vertical-rl.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<link rel="help" href="https://crbug.com/1457423">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>body { margin: 0; }</style>
+<div style="
+  column-count: 2;
+  column-gap: 14px;
+  writing-mode: vertical-rl;
+  inline-size: 200px;
+  block-size: 100px;
+  padding: 10px;">
+<div style="block-size: 20px;"></div>
+<div style="column-span: all; block-size: 20px;"></div>
+<div id="child1" style="block-size: 70px; break-inside: avoid;"></div>
+<div id="child2" style="block-size: 70px; break-inside: avoid;"></div>
+</div>
+<script>
+const t = async_test('Hit-testing in vertical-rl writing-mode');
+t.step(() => {
+  assert_equals(document.elementFromPoint(15, 20), child1);
+  assert_equals(document.elementFromPoint(15, 130), child2);
+
+  const PADDING = 10;
+  const e1 = new MouseEvent('click', {clientX:15, clientY:20, bubbles:true, cancelable:true});
+  document.onclick = t.step_func(e => {
+    assert_equals(e.target, child1);
+    assert_equals(e.offsetX, e.clientX - PADDING);
+    assert_equals(e.offsetY, e.clientY - PADDING);
+  });
+  child1.dispatchEvent(e1);
+
+  const e2 = new MouseEvent('click', {clientX:15, clientY:130, bubbles:true, cancelable:true});
+  document.onclick = t.step_func_done(e => {
+    const COLUMN_GAP = 14;
+    const COLUMN_INLINE_SIZE = (200 - COLUMN_GAP) / 2;
+    assert_equals(e.target, child2);
+    assert_equals(e.offsetX, e.clientX - PADDING);
+    assert_equals(e.offsetY, e.clientY - PADDING - COLUMN_INLINE_SIZE - COLUMN_GAP);
+  });
+  child2.dispatchEvent(e2);
+});
+</script>
diff --git a/tests/wpt/tests/css/css-nesting/cssom.html b/tests/wpt/tests/css/css-nesting/cssom.html
index b5bd80d1b46..fa22b2fb453 100644
--- a/tests/wpt/tests/css/css-nesting/cssom.html
+++ b/tests/wpt/tests/css/css-nesting/cssom.html
@@ -125,22 +125,19 @@
 }`, 'color is changed, new rule is ignored');
   });
 
-  // We cannot insert anything starting with an tag, as that would cause
-  // the serialized rule not to parse back. Compounds starting with a tag
-  // that are _not_ the first compound in a complex selector are OK, though,
-  // as are complex selectors that are not the first in the list.
   test(() => {
     document.getElementById('ss').innerHTML = sampleSheetText;
     let [ss] = document.styleSheets;
-    ss.cssRules[0].cssRules[0].selectorText = 'div.b .c &';  // Ignored.
+    ss.cssRules[0].cssRules[0].selectorText = 'div.b .c &';  // Allowed
     ss.cssRules[0].cssRules[1].selectorText = '.c div.b &, div &';  // Allowed.
-    assert_throws_dom('SyntaxError', () => { ss.cssRules[0].insertRule('div & {}'); });
+    ss.cssRules[0].insertRule('div & {}'); // Allowed.
     assert_equals(ss.cssRules[0].cssText,
 `.a {
   color: red;
-  & .b { color: green; }
+  div & { }
+  div.b .c & { color: green; }
   .c div.b &, div & { color: blue; }
-}`, 'one rule is kept unchanged, the other is changed');
+}`, 'selectorText and insertRule');
   });
 
   // Rules that are dropped in forgiving parsing but that contain &,
diff --git a/tests/wpt/tests/css/css-nesting/invalid-inner-rules.html b/tests/wpt/tests/css/css-nesting/invalid-inner-rules.html
index ffb53420e2d..87c7c9a9348 100644
--- a/tests/wpt/tests/css/css-nesting/invalid-inner-rules.html
+++ b/tests/wpt/tests/css/css-nesting/invalid-inner-rules.html
@@ -28,7 +28,7 @@ div {
     let [ss] = document.styleSheets;
     assert_equals(ss.cssRules.length, 1);
 
-    // The @layer rule should be ignored.
+    // The @font-face rule should be ignored.
     assert_equals(ss.cssRules[0].cssText,
 `div {
   @media screen {
diff --git a/tests/wpt/tests/css/css-properties-values-api/register-property-syntax-parsing.html b/tests/wpt/tests/css/css-properties-values-api/register-property-syntax-parsing.html
index 16cbdf0c571..5bda1c4c5b2 100644
--- a/tests/wpt/tests/css/css-properties-values-api/register-property-syntax-parsing.html
+++ b/tests/wpt/tests/css/css-properties-values-api/register-property-syntax-parsing.html
@@ -75,7 +75,6 @@ assert_valid("<time>", "2s");
 assert_valid("<time>", "calc(2s - 9ms)");
 assert_valid("<resolution>", "10dpi");
 assert_valid("<resolution>", "3dPpX");
-assert_valid("<resolution>", "-5.3dpcm");
 assert_valid("<transform-function>", "translateX(2px)");
 assert_valid("<transform-function>|<integer>", "5");
 assert_valid("<transform-function>|<integer>", "scale(2)");
@@ -247,6 +246,11 @@ assert_invalid("<angle>", "0");
 assert_invalid("<angle>", "10%");
 assert_invalid("<time>", "2px");
 assert_invalid("<resolution>", "10");
+
+// "The allowed range of <resolution> values always excludes negative values"
+// https://www.w3.org/TR/css-values-4/#resolution-value
+assert_invalid("<resolution>", "-5.3dpcm");
+
 assert_invalid("<transform-function>", "scale()");
 assert_invalid("<transform-list>", "scale()");
 assert_invalid("<transform-list>+", "translateX(2px) rotate(20deg)");
diff --git a/tests/wpt/tests/css/css-scroll-snap/input/keyboard.html b/tests/wpt/tests/css/css-scroll-snap/input/keyboard.html
index 7b0c6c05742..187ac0fb9e3 100644
--- a/tests/wpt/tests/css/css-scroll-snap/input/keyboard.html
+++ b/tests/wpt/tests/css/css-scroll-snap/input/keyboard.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#scroll-snap-type" />
 <title>Arrow key scroll snapping</title>
+<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
 <meta name="flags" content="should">
 <meta name="assert"
       content="Test passes if keyboard scrolling correctly snaps on a snap
diff --git a/tests/wpt/tests/css/css-transitions/idlharness-2.html b/tests/wpt/tests/css/css-transitions/idlharness-2.html
new file mode 100644
index 00000000000..236bf5642bc
--- /dev/null
+++ b/tests/wpt/tests/css/css-transitions/idlharness-2.html
@@ -0,0 +1,28 @@
+<!doctype html>
+<title>css-transitions-2 IDL tests</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/WebIDLParser.js"></script>
+<script src="/resources/idlharness.js"></script>
+<!-- used to provide objects -->
+<style>
+  @starting-style {
+    #id { color: green }
+  }
+</style>
+<script>
+  "use strict";
+
+  idl_test(
+    ['css-transitions-2'],
+    ['web-animations', 'cssom', 'html', 'dom'],
+    idl_array => {
+      idl_array.add_objects({
+        Animation: ['new Animation()'],
+        CSSStartingStyleRule: ['sheet.cssRules[0]'],
+      });
+      self.sheet = document.styleSheets[0];
+    }
+  );
+</script>
diff --git a/tests/wpt/tests/css/css-values/animations/calc-interpolation.html b/tests/wpt/tests/css/css-values/animations/calc-interpolation.html
index 40379a13fb2..f2c49a5cb9f 100644
--- a/tests/wpt/tests/css/css-values/animations/calc-interpolation.html
+++ b/tests/wpt/tests/css/css-values/animations/calc-interpolation.html
@@ -68,7 +68,7 @@ test_interpolation({
   target_names:['CSS Animations', 'Web Animations']
 }, [
   {at: -0.25, expect: `${-APPROX_INFINITY}px`},
-  {at: 0, expect: `${APPROX_INFINITY}px`},
+  {at: 0, expect: `0px`},
   {at: 0.25, expect: `${APPROX_INFINITY}px`},
   {at: 0.5, expect: `${APPROX_INFINITY}px`},
   {at: 0.75, expect: `${APPROX_INFINITY}px`},
diff --git a/tests/wpt/tests/css/css-values/cap-invalidation.html b/tests/wpt/tests/css/css-values/cap-invalidation.html
new file mode 100644
index 00000000000..0becd0d093d
--- /dev/null
+++ b/tests/wpt/tests/css/css-values/cap-invalidation.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<title>CSS Values and Units Test: cap invalidation</title>
+<link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
+<link rel="help" href="https://drafts.csswg.org/css-values/#font-relative-lengths">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+  @import url("/fonts/ahem.css");
+  html {
+    font-family: 'Ahem';
+    font-size: 40px;
+  }
+  div {
+    width: 10cap;
+  }
+</style>
+
+<html>
+  <div id="div"></div>
+</html>
+
+<script>
+  setup({ single_test: true });
+  let old_width = div.getBoundingClientRect().width;
+  document.documentElement.style.fontFamily = "sans-serif";
+  let new_width = div.getBoundingClientRect().width;
+  assert_not_equals(old_width, new_width, "expect the capital height of Ahem and sans-serif to be different");
+  done();
+</script>
diff --git a/tests/wpt/tests/css/css-values/exp-log-serialize.html b/tests/wpt/tests/css/css-values/exp-log-serialize.html
index 9eca44e6829..6108278d962 100644
--- a/tests/wpt/tests/css/css-values/exp-log-serialize.html
+++ b/tests/wpt/tests/css/css-values/exp-log-serialize.html
@@ -33,8 +33,11 @@ test_serialization(
     'calc(log(1) + 0.5)',
     'calc(0.5)',
     '0.5');
-test_serialization(
-    'calc(log(0))',
-    'calc(-infinity)',
-    '-infinity');
+
+const t = 'calc(log(0))';
+const s = 'calc(-infinity)';
+const c = '0';
+test_specified_serialization('opacity', t, s);
+test_specified_serialization('transform', `scale(${t})`, `scale(${s})`);
+test_computed_serialization('opacity', t, c);
 </script>
\ No newline at end of file
diff --git a/tests/wpt/tests/css/css-values/rcap-invalidation.html b/tests/wpt/tests/css/css-values/rcap-invalidation.html
new file mode 100644
index 00000000000..562161b4e5d
--- /dev/null
+++ b/tests/wpt/tests/css/css-values/rcap-invalidation.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<title>CSS Values and Units Test: rcap invalidation</title>
+<link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
+<link rel="help" href="https://drafts.csswg.org/css-values/#font-relative-lengths">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<meta name="assert" content="test rex invalidation">
+<style>
+  @import url("/fonts/ahem.css");
+  html {
+    font-family: 'Ahem';
+    font-size: 40px;
+  }
+  body {
+    font-family: monospace;
+    font-size: 20px;
+  }
+  div {
+    height: 10rcap;
+    width: 10rcap;
+  }
+</style>
+
+<html>
+  <body>
+    <div id="div"></div>
+  </body>
+</html>
+
+<script>
+  setup({ single_test: true });
+  let old_width = div.getBoundingClientRect().width;
+  document.documentElement.style.fontFamily = "sans-serif";
+  let new_width = div.getBoundingClientRect().width;
+  assert_not_equals(old_width, new_width, "expect the capital height of Ahem and sans-serif to be different");
+  done();
+</script>
diff --git a/tests/wpt/tests/css/css-values/round-mod-rem-serialize.html b/tests/wpt/tests/css/css-values/round-mod-rem-serialize.html
index 39569995b3a..aa7c768b952 100644
--- a/tests/wpt/tests/css/css-values/round-mod-rem-serialize.html
+++ b/tests/wpt/tests/css/css-values/round-mod-rem-serialize.html
@@ -11,7 +11,7 @@
 <script>
 function test_serialization(t,s,c) {
     test_specified_serialization('opacity', t, s);
-    test_specified_serialization('transform', `scale(${t})`, `scale(calc(${c}))`);
+    test_specified_serialization('transform', `scale(${t})`, `scale(${s})`);
     test_computed_serialization('opacity', t, c);
     test_computed_serialization('transform', `scale(${t})`, `matrix(${c}, 0, 0, ${c}, 0, 0)`);
 }
@@ -32,13 +32,13 @@ test_serialization(
 test_serialization(
     'calc(round(1,0))',
     'calc(NaN)',
-    'NaN');
+    '0');
 test_serialization(
     'calc(mod(1,0))',
     'calc(NaN)',
-    'NaN');
+    '0');
 test_serialization(
     'calc(rem(1,0))',
     'calc(NaN)',
-    'NaN');
+    '0');
 </script>
diff --git a/tests/wpt/tests/css/cssom/getComputedStyle-insets-absolute-crash.html b/tests/wpt/tests/css/cssom/getComputedStyle-insets-absolute-crash.html
new file mode 100644
index 00000000000..e28828bab1f
--- /dev/null
+++ b/tests/wpt/tests/css/cssom/getComputedStyle-insets-absolute-crash.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<title>Chromium bug: getComputedStyle() crashes with subtree layout of out-of-flow node</title>
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1458561">
+
+<style>
+.container {
+  position: relative;
+  width: 100px;
+  height: 100px;
+  background: lime;
+}
+
+.oof {
+  position: absolute;
+  width: 30px;
+  height: 30px;
+  top: 0;
+  left: 0;
+  overflow: hidden;
+  background: hotpink;
+}
+</style>
+
+<div class="container">
+  <div id="target1" class="oof">hi</div>
+</div>
+<script>
+document.body.offsetTop;
+target1.innerText = 'boom';
+getComputedStyle(target1).top;  // Shouldn't crash
+</script>
+
+<div class="container">
+  <div id="target2" class="oof"><div>hi</div></div>
+</div>
+<script>
+document.body.offsetTop;
+target2.firstChild.innerText = 'boom';
+getComputedStyle(target2).top;  // Shouldn't crash
+</script>
diff --git a/tests/wpt/tests/css/cssom/getComputedStyle-insets-grid.html b/tests/wpt/tests/css/cssom/getComputedStyle-insets-grid.html
new file mode 100644
index 00000000000..08b55733a15
--- /dev/null
+++ b/tests/wpt/tests/css/cssom/getComputedStyle-insets-grid.html
@@ -0,0 +1,25 @@
+<!doctype html>
+<title>Position absolute getComputedStyle left (for display: grid)</title>
+<link rel="help" href="https://drafts.csswg.org/cssom/#resolved-value">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=867616">
+<link rel="author" href="mailto:francois.remy.dev@outlook.com">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+
+span { display: grid; grid-template-columns: 100px 100px; }
+span { position: absolute; grid-column: 2; }
+
+</style>
+
+<span>abc<span>def</span></span>
+
+<script>
+var test_description = document.title;
+promise_test(t => {
+  return new Promise(test => addEventListener('load', e=>test()))
+      .then(test => assert_equals(
+          getComputedStyle(document.querySelector("body > span > span"))['left'], "0px",
+          "Invalid gCS($(\"body > span > span\"))['left'];"));
+}, test_description);
+</script>
diff --git a/tests/wpt/tests/css/cssom/getComputedStyle-insets-relpos-inline.html b/tests/wpt/tests/css/cssom/getComputedStyle-insets-relpos-inline.html
new file mode 100644
index 00000000000..d5f197ee9bc
--- /dev/null
+++ b/tests/wpt/tests/css/cssom/getComputedStyle-insets-relpos-inline.html
@@ -0,0 +1,84 @@
+<!doctype html>
+<title>getComputedStyle OOF inset resolved against relpos inline container</title>
+<link rel="help" href="https://drafts.csswg.org/cssom/#resolved-value">
+<link rel="author" href="mailto:xiaochengh@chromium.org">
+<link rel="stylesheet" href="/fonts/ahem.css">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<style>
+.ifc {
+  position: relative;
+  width: max-content;
+  font: 20px/1 Ahem;
+  margin-bottom: 2em;
+}
+
+.relpos {
+  position: relative;
+  background: yellow;
+  color: yellow;
+}
+
+.target {
+  position: absolute;
+  background: green;
+  width: 5em;
+  height: 1em;
+  top: 1em;
+}
+
+.fix-start {
+  inset-inline-start: 0;
+}
+
+.fix-end {
+  inset-inline-end: 0;
+}
+</style>
+
+<div class="ifc">
+  Lorem
+  <span class="relpos">
+    ipsum dolor
+    <div class="target fix-start" id="target1"></div>
+    <div class="target fix-end" id="target2"></div>
+  </span>
+  sit amet
+</div>
+<script>
+test(() => {
+  let style = getComputedStyle(target1);
+  assert_equals(style.left, '0px');
+  assert_equals(style.right, '140px');
+}, 'OOF with left fixed right auto in relpos inline container');
+
+test(() => {
+  let style = getComputedStyle(target2);
+  assert_equals(style.left, '140px');
+  assert_equals(style.right, '0px');
+}, 'OOF with left auto right fixed in relpos inline container');
+</script>
+
+<div class="ifc">
+  Lorem
+  <span class="relpos" dir="rtl">
+    ipsum dolor
+    <div class="target fix-start" id="target3" dir="ltr"></div>
+    <div class="target fix-end" id="target4" dir="ltr"></div>
+  </span>
+  sit amet
+</div>
+<script>
+test(() => {
+  let style = getComputedStyle(target3);
+  assert_equals(style.left, '0px');
+  assert_equals(style.right, '140px');
+}, 'OOF with left fixed right auto in relpos inline container with mixed directions');
+
+test(() => {
+  let style = getComputedStyle(target4);
+  assert_equals(style.left, '140px');
+  assert_equals(style.right, '0px');
+}, 'OOF with left auto right fixed in relpos inline container with mixed directions');
+</script>
diff --git a/tests/wpt/tests/css/motion/animation/offset-path-interpolation-005.html b/tests/wpt/tests/css/motion/animation/offset-path-interpolation-005.html
index 13de65d8a73..11234bf31a3 100644
--- a/tests/wpt/tests/css/motion/animation/offset-path-interpolation-005.html
+++ b/tests/wpt/tests/css/motion/animation/offset-path-interpolation-005.html
@@ -128,15 +128,13 @@
         from: 'ray(-10deg farthest-corner)',
         to: 'ray(-50deg farthest-corner at 100% 100%)'
       }, [
-        {at: -1, expect: 'ray(30deg farthest-corner at 0% 0%)'},
-        {at: 0, expect: 'ray(-10deg farthest-corner)'},
-        {at: 0.125, expect: 'ray(-15deg farthest-corner at 56.25% 56.25%)'},
-        {at: 0.875, expect: 'ray(-45deg farthest-corner at 93.75% 93.75%)'},
+        // TODO: Test intermediate values as well, once the expected behavior
+        // is clear in the spec. Right now it's a bit unclear whether or how to
+        // interpolate to/from the initial 'auto' value.
         {at: 1, expect: 'ray(-50deg farthest-corner at 100% 100%)'},
-        {at: 2, expect: 'ray(-90deg farthest-corner at 150% 150%)'},
       ]);
 
-      // No interpolation between different sizes and/or different containment.
+      // No interpolation between different sizes and/or different containment and/or coord-boxes.
       test_no_interpolation({
         property: 'offset-path',
         from: 'ray(200deg farthest-side)',
@@ -152,6 +150,11 @@
         from: 'ray(200deg farthest-side contain)',
         to: 'ray(300deg sides)'
       });
+      test_no_interpolation({
+        property: 'offset-path',
+        from: 'ray(-10deg farthest-corner) content-box',
+        to: 'ray(-50deg farthest-corner at 100% 100%) padding-box'
+      });
     </script>
   </body>
 </html>
diff --git a/tests/wpt/tests/css/motion/offset-path-coord-box-001-ref.html b/tests/wpt/tests/css/motion/offset-path-coord-box-001-ref.html
index e9a7fbb808f..8b86ce26e16 100644
--- a/tests/wpt/tests/css/motion/offset-path-coord-box-001-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-coord-box-001-ref.html
@@ -9,8 +9,8 @@
   left: 100px;
   position: relative;
   border-radius: 50%;
-  border: 5px solid black;
-  width: 600px;
+  border: 10px solid black;
+  width: 400px;
   height: 400px;
 }
 #box {
@@ -18,7 +18,7 @@
   position: relative;
   top: 100px;
   left: 100px;
-  transform: translate(378.441px, -85.8301px) rotate(37.2267deg);
+  transform: translate(260px, 50px);
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-coord-box-001.html b/tests/wpt/tests/css/motion/offset-path-coord-box-001.html
index d4e903e69df..15f378e0386 100644
--- a/tests/wpt/tests/css/motion/offset-path-coord-box-001.html
+++ b/tests/wpt/tests/css/motion/offset-path-coord-box-001.html
@@ -12,8 +12,8 @@
   left: 100px;
   position: relative;
   border-radius: 50%;
-  border: 5px solid black;
-  width: 600px;
+  border: 10px solid black;
+  width: 400px;
   height: 400px;
 }
 #box {
@@ -22,7 +22,7 @@
   left: 100px;
   position: relative;
   offset-path: border-box;
-  offset-distance: 15%;
+  offset-distance: 25%;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-coord-box-002-ref.html b/tests/wpt/tests/css/motion/offset-path-coord-box-002-ref.html
index b7bee52a1e3..41f65dc0164 100644
--- a/tests/wpt/tests/css/motion/offset-path-coord-box-002-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-coord-box-002-ref.html
@@ -8,7 +8,7 @@
   top: 100px;
   left: 100px;
   position: relative;
-  border: 5px solid black;
+  border: 10px solid black;
   width: 600px;
   height: 400px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-coord-box-002.html b/tests/wpt/tests/css/motion/offset-path-coord-box-002.html
index 0446e2caa16..40b94727d37 100644
--- a/tests/wpt/tests/css/motion/offset-path-coord-box-002.html
+++ b/tests/wpt/tests/css/motion/offset-path-coord-box-002.html
@@ -10,7 +10,7 @@
   top: 100px;
   left: 100px;
   position: relative;
-  border: 5px solid black;
+  border: 10px solid black;
   width: 600px;
   height: 400px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-coord-box-003-ref.html b/tests/wpt/tests/css/motion/offset-path-coord-box-003-ref.html
index 5b9b445dd8f..0fa94d4c31b 100644
--- a/tests/wpt/tests/css/motion/offset-path-coord-box-003-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-coord-box-003-ref.html
@@ -8,7 +8,7 @@
   top: 100px;
   left: 100px;
   position: relative;
-  border: 5px solid black;
+  border: 10px solid black;
   padding: 10px;
   width: 600px;
   height: 400px;
diff --git a/tests/wpt/tests/css/motion/offset-path-coord-box-003.html b/tests/wpt/tests/css/motion/offset-path-coord-box-003.html
index d3ea7f92a8e..e793c18830d 100644
--- a/tests/wpt/tests/css/motion/offset-path-coord-box-003.html
+++ b/tests/wpt/tests/css/motion/offset-path-coord-box-003.html
@@ -10,7 +10,7 @@
   top: 100px;
   left: 100px;
   position: relative;
-  border: 5px solid black;
+  border: 10px solid black;
   padding: 10px;
   width: 600px;
   height: 400px;
diff --git a/tests/wpt/tests/css/motion/offset-path-geometry-box-ref.html b/tests/wpt/tests/css/motion/offset-path-coord-box-004-ref.html
similarity index 100%
rename from tests/wpt/tests/css/motion/offset-path-geometry-box-ref.html
rename to tests/wpt/tests/css/motion/offset-path-coord-box-004-ref.html
diff --git a/tests/wpt/tests/css/motion/offset-path-geometry-box.html b/tests/wpt/tests/css/motion/offset-path-coord-box-004.html
similarity index 51%
rename from tests/wpt/tests/css/motion/offset-path-geometry-box.html
rename to tests/wpt/tests/css/motion/offset-path-coord-box-004.html
index 1e9399441c2..c84bae6832e 100644
--- a/tests/wpt/tests/css/motion/offset-path-geometry-box.html
+++ b/tests/wpt/tests/css/motion/offset-path-coord-box-004.html
@@ -1,10 +1,10 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title>CSS Motion Path: path(basic-shape) paths</title>
-    <link rel="help" href="https://drafts.fxtf.org/motion-1/#offset-path-property">
-    <link rel="match" href="offset-path-geometry-box-ref.html">
-    <meta name="assert" content="This tests that path(<geometry-box>) generates a rotation and translation.">
+    <title>CSS Motion Path: offset-path:stoke-box paths</title>
+    <link rel="help" href="https://drafts.fxtf.org/motion-1/#valdef-offset-path-coord-box">
+    <link rel="match" href="offset-path-coord-box-004-ref.html">
+    <meta name="assert" content="This tests that offset-path:stroke-box generates a rotation and translation.">
     <style>
       #target {
         position: absolute;
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-circle-001-ref.html b/tests/wpt/tests/css/motion/offset-path-shape-circle-001-ref.html
index 7bc29af79c6..6d6b64d32e3 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-circle-001-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-circle-001-ref.html
@@ -13,7 +13,8 @@
 }
 #box {
   background-color: green;
-  transform: translate(250px, 350px);
+  transform: translate(250px, 350px) rotate(180deg);
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-circle-001.html b/tests/wpt/tests/css/motion/offset-path-shape-circle-001.html
index 4874ba33929..2205d9d3f69 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-circle-001.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-circle-001.html
@@ -1,7 +1,7 @@
 <!doctype html>
 <meta charset="utf-8">
 <title>CSS Motion Path test: &lt;basic-shape&gt; circle() path with explicit arguments</title>
-<meta name=fuzzy content="0-1;0-200">
+<meta name=fuzzy content="0-35;0-200">
 <link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
 <link rel="match" href="offset-path-shape-circle-001-ref.html">
 <link rel="help" href="https://drafts.fxtf.org/motion/#valdef-offset-path-basic-shape">
@@ -19,6 +19,7 @@
   position: relative;
   offset-path: circle(closest-side at center);
   offset-distance: 25%;
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-circle-003-ref.html b/tests/wpt/tests/css/motion/offset-path-shape-circle-003-ref.html
index 327d325137c..c005984f768 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-circle-003-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-circle-003-ref.html
@@ -15,6 +15,7 @@
   background-color: green;
   position: relative;
   transform: translate(420.231px, 311.969px) rotate(154.813deg);
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-circle-003.html b/tests/wpt/tests/css/motion/offset-path-shape-circle-003.html
index 1911d425a16..ef69e7e41b6 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-circle-003.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-circle-003.html
@@ -1,7 +1,7 @@
 <!doctype html>
 <meta charset="utf-8">
 <title>CSS Motion Path test: &lt;basic-shape&gt; circle() path with offset-distance</title>
-<meta name=fuzzy content="0-10;0-20">
+<meta name=fuzzy content="0-110;0-500">
 <link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
 <link rel="match" href="offset-path-shape-circle-003-ref.html">
 <link rel="help" href="https://drafts.fxtf.org/motion/#valdef-offset-path-basic-shape">
@@ -19,6 +19,7 @@
   position: relative;
   offset-path: circle(farthest-side at top);
   offset-distance: 18%;
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-circle-004-ref.html b/tests/wpt/tests/css/motion/offset-path-shape-circle-004-ref.html
index 86c67dcdedc..925abdb8b4f 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-circle-004-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-circle-004-ref.html
@@ -8,13 +8,14 @@
   top: 100px;
   left: 100px;
   position: relative;
-  width: 600px;
+  width: 400px;
   height: 400px;
 }
 #box {
   background-color: green;
   position: relative;
-  transform: translate(400px, 199px) translate(-50px, -50px);
+  transform: translate(200px, 160px);
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-circle-004.html b/tests/wpt/tests/css/motion/offset-path-shape-circle-004.html
index f0a8523dd16..d22665636e6 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-circle-004.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-circle-004.html
@@ -1,6 +1,7 @@
 <!doctype html>
 <meta charset="utf-8">
 <title>CSS Motion Path test: &lt;basic-shape&gt; circle() path with offset-distance and offset-anchor</title>
+<meta name=fuzzy content="0-80;0-310">
 <link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
 <link rel="match" href="offset-path-shape-circle-004-ref.html">
 <link rel="help" href="https://drafts.fxtf.org/motion/#valdef-offset-path-basic-shape">
@@ -10,7 +11,7 @@
   top: 100px;
   left: 100px;
   position: relative;
-  width: 600px;
+  width: 400px;
   height: 400px;
 }
 #box {
@@ -19,6 +20,7 @@
   offset-path: circle(10% at bottom 25% right 25%);
   offset-anchor: 100% 100%;
   offset-distance: 75%;
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-circle-005.html b/tests/wpt/tests/css/motion/offset-path-shape-circle-005.html
index 0ca93306c60..2ba5bc1650a 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-circle-005.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-circle-005.html
@@ -1,6 +1,7 @@
 <!doctype html>
 <meta charset="utf-8">
 <title>CSS Motion Path test: &lt;basic-shape&gt; circle() path with offset-position</title>
+<meta name=fuzzy content="0-18;0-400">
 <link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
 <link rel="match" href="offset-path-shape-circle-005-ref.html">
 <link rel="help" href="https://drafts.fxtf.org/motion/#valdef-offset-path-basic-shape">
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-001-ref.html b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-001-ref.html
index 32236bbc239..0e53fa2d355 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-001-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-001-ref.html
@@ -13,7 +13,8 @@
 }
 #box {
   background-color: green;
-  transform: translate(250px, 350px);
+  transform: translate(250px, 350px) rotate(180deg);
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-001.html b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-001.html
index b8254458d38..be3ade57c6d 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-001.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-001.html
@@ -1,7 +1,7 @@
 <!doctype html>
 <meta charset="utf-8">
 <title>CSS Motion Path test: &lt;basic-shape&gt; ellipse() path with explicit arguments</title>
-<meta name=fuzzy content="0-1;0-200">
+<meta name=fuzzy content="0-24;0-200">
 <link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
 <link rel="match" href="offset-path-shape-ellipse-001-ref.html">
 <link rel="help" href="https://drafts.fxtf.org/motion/#valdef-offset-path-basic-shape">
@@ -19,6 +19,7 @@
   position: relative;
   offset-path: ellipse(closest-side closest-side at center);
   offset-distance: 25%;
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-003-ref.html b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-003-ref.html
index 4a9fed4c86a..2239210e49b 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-003-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-003-ref.html
@@ -8,13 +8,14 @@
   top: 100px;
   left: 100px;
   position: relative;
-  width: 600px;
-  height: 400px;
+  width: 400px;
+  height: 200px;
 }
 #box {
   background-color: green;
   position: relative;
-  transform: translate(393.93px, 300.959px) rotate(143.905deg);
+  transform: translate(8.6px, 91.4px) rotate(-135deg);
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-003.html b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-003.html
index 540c56dba7b..38ef5eb9bbf 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-003.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-003.html
@@ -1,6 +1,7 @@
 <!doctype html>
 <meta charset="utf-8">
 <title>CSS Motion Path test: &lt;basic-shape&gt; ellipse() path with offset-distance</title>
+<meta name=fuzzy content="0-25;0-450">
 <link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
 <link rel="match" href="offset-path-shape-ellipse-003-ref.html">
 <link rel="help" href="https://drafts.fxtf.org/motion/#valdef-offset-path-basic-shape">
@@ -10,14 +11,15 @@
   top: 100px;
   left: 100px;
   position: relative;
-  width: 600px;
-  height: 400px;
+  width: 400px;
+  height: 200px;
 }
 #box {
   background-color: green;
   position: relative;
   offset-path: ellipse(farthest-side farthest-side at top);
-  offset-distance: 18%;
+  offset-distance: 37.5%;
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-005.html b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-005.html
index 27eae4a5c49..2b2c0abeff9 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-ellipse-005.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-ellipse-005.html
@@ -1,6 +1,7 @@
 <!doctype html>
 <meta charset="utf-8">
 <title>CSS Motion Path test: &lt;basic-shape&gt; ellipse() path with offset-position</title>
+<meta name=fuzzy content="0-18;0-400">
 <link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
 <link rel="match" href="offset-path-shape-ellipse-005-ref.html">
 <link rel="help" href="https://drafts.fxtf.org/motion/#valdef-offset-path-basic-shape">
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-inset-002-ref.html b/tests/wpt/tests/css/motion/offset-path-shape-inset-002-ref.html
index 28195129f32..1bb649474aa 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-inset-002-ref.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-inset-002-ref.html
@@ -8,12 +8,14 @@
   top: 100px;
   left: 100px;
   position: relative;
-  width: 600px;
+  width: 400px;
   height: 400px;
 }
 #box {
   background-color: green;
-  transform: translate(512.786px, 283.444px) rotate(133.055deg) translate(50px, 50px);
+  transform: translate(306px, 94px) rotate(45deg);
+  transform-origin: 0 0;
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-inset-002.html b/tests/wpt/tests/css/motion/offset-path-shape-inset-002.html
index 6279cdd35eb..5ca502e8b1c 100644
--- a/tests/wpt/tests/css/motion/offset-path-shape-inset-002.html
+++ b/tests/wpt/tests/css/motion/offset-path-shape-inset-002.html
@@ -1,6 +1,7 @@
 <!doctype html>
 <meta charset="utf-8">
 <title>CSS Motion Path test: &lt;basic-shape&gt; inset() path with explicit arguments and radius</title>
+<meta name=fuzzy content="0-75;0-500">
 <link rel="author" title="Daniil Sakhapov" href="sakhapov@google.com">
 <link rel="match" href="offset-path-shape-inset-002-ref.html">
 <link rel="help" href="https://drafts.fxtf.org/motion/#valdef-offset-path-basic-shape">
@@ -10,15 +11,16 @@
   top: 100px;
   left: 100px;
   position: relative;
-  width: 600px;
+  width: 400px;
   height: 400px;
 }
 #box {
   background-color: green;
   position: relative;
-  offset-path: inset(10px 10px 10px 10px round 30%);
+  offset-path: inset(50px round 50%);
   offset-anchor: 0 0;
-  offset-distance: 40%;
+  offset-distance: 12.5%;
+  border-radius: 50% 50% 0 0;
   width: 100px;
   height: 100px;
 }
diff --git a/tests/wpt/tests/css/motion/offset-path-shape-ref.html b/tests/wpt/tests/css/motion/offset-path-shape-ref.html
deleted file mode 100644
index a659b287fda..00000000000
--- a/tests/wpt/tests/css/motion/offset-path-shape-ref.html
+++ /dev/null
@@ -1,21 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>CSS Motion Path: path(basic-shape) paths</title>
-    <style>
-      #target {
-        position: absolute;
-        left: 300px;
-        top: 0px;
-        width: 300px;
-        height: 200px;
-        background-color: lime;
-        transform-origin: 0px 0px;
-        transform: translate(35px, 44px);
-      }
-    </style>
-  </head>
-  <body>
-    <div id="target"></div>
-  </body>
-</html>
diff --git a/tests/wpt/tests/css/motion/parsing/offset-anchor-parsing-valid.html b/tests/wpt/tests/css/motion/parsing/offset-anchor-parsing-valid.html
index 97a3c54131f..6cb4d44117f 100644
--- a/tests/wpt/tests/css/motion/parsing/offset-anchor-parsing-valid.html
+++ b/tests/wpt/tests/css/motion/parsing/offset-anchor-parsing-valid.html
@@ -15,7 +15,7 @@
 test_valid_value("offset-anchor", "auto");
 
 test_valid_value("offset-anchor", "left bottom");
-test_valid_value("offset-anchor", "center center", "center");
+test_valid_value("offset-anchor", "center center");
 test_valid_value("offset-anchor", "right center");
 test_valid_value("offset-anchor", "center top");
 test_valid_value("offset-anchor", "center bottom");
diff --git a/tests/wpt/tests/css/motion/parsing/offset-position-parsing-valid.html b/tests/wpt/tests/css/motion/parsing/offset-position-parsing-valid.html
index 032a5b42b46..bc0d19a460f 100644
--- a/tests/wpt/tests/css/motion/parsing/offset-position-parsing-valid.html
+++ b/tests/wpt/tests/css/motion/parsing/offset-position-parsing-valid.html
@@ -16,7 +16,7 @@ test_valid_value("offset-position", "auto");
 test_valid_value("offset-position", "normal");
 
 test_valid_value("offset-position", "left bottom");
-test_valid_value("offset-position", "center center", "center");
+test_valid_value("offset-position", "center center");
 test_valid_value("offset-position", "right center");
 test_valid_value("offset-position", "center top");
 test_valid_value("offset-position", "center bottom");
diff --git a/tests/wpt/tests/css/printing/page-size-001-print-ref.html b/tests/wpt/tests/css/printing/page-size-001-print-ref.html
new file mode 100644
index 00000000000..8bfd2717fa5
--- /dev/null
+++ b/tests/wpt/tests/css/printing/page-size-001-print-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<style>
+  @page { size: 300px 400px; }
+  body { margin: 0; }
+</style>
+<div style="height:400px;">Page 1</div>
+<div style="height:400px;">Page 2</div>
+<div style="height:400px;">Page 3</div>
diff --git a/tests/wpt/tests/css/printing/page-size-001-print.html b/tests/wpt/tests/css/printing/page-size-001-print.html
new file mode 100644
index 00000000000..19d72b0231f
--- /dev/null
+++ b/tests/wpt/tests/css/printing/page-size-001-print.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-page-3/#page-size-prop">
+<link rel="match" href="page-size-001-print-ref.html">
+<style>
+  @page { size: 300px 400px; }
+  body { margin: 0; }
+</style>
+<div style="break-before:page;">Page 1</div>
+<div style="break-before:page;">Page 2</div>
+<div style="break-before:page;">Page 3</div>
diff --git a/tests/wpt/tests/css/printing/page-size-002-print-ref.html b/tests/wpt/tests/css/printing/page-size-002-print-ref.html
new file mode 100644
index 00000000000..aa8cb6edcd2
--- /dev/null
+++ b/tests/wpt/tests/css/printing/page-size-002-print-ref.html
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<style>
+  @page { size: 300px 50px; }
+  body { margin: 0; }
+</style>
+<div style="height:50px;">Page 1</div>
+<div style="height:50px;">Page 2</div>
+<div style="height:50px;">Page 3</div>
diff --git a/tests/wpt/tests/css/printing/page-size-002-print.html b/tests/wpt/tests/css/printing/page-size-002-print.html
new file mode 100644
index 00000000000..8ecf38107b8
--- /dev/null
+++ b/tests/wpt/tests/css/printing/page-size-002-print.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-page-3/#page-size-prop">
+<link rel="match" href="page-size-002-print-ref.html">
+<style>
+  @page { size: 300px 50px; }
+  body { margin: 0; }
+</style>
+<div style="break-before:page;">Page 1</div>
+<div style="break-before:page;">Page 2</div>
+<div style="break-before:page;">Page 3</div>
diff --git a/tests/wpt/tests/css/printing/page-size-003-print-ref.html b/tests/wpt/tests/css/printing/page-size-003-print-ref.html
new file mode 100644
index 00000000000..38ea1508781
--- /dev/null
+++ b/tests/wpt/tests/css/printing/page-size-003-print-ref.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<style>
+  @page {
+    size: 300px 100px;
+    margin: 25px;
+  }
+  body { margin: 0; }
+</style>
+<div style="height:50px;">Page 1</div>
+<div style="height:50px;">Page 2</div>
+<div style="height:50px;">Page 3</div>
diff --git a/tests/wpt/tests/css/printing/page-size-003-print.html b/tests/wpt/tests/css/printing/page-size-003-print.html
new file mode 100644
index 00000000000..805ff0e568a
--- /dev/null
+++ b/tests/wpt/tests/css/printing/page-size-003-print.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://www.w3.org/TR/css-page-3/#page-size-prop">
+<link rel="match" href="page-size-003-print-ref.html">
+<style>
+  @page {
+    size: 300px 100px;
+    margin: 25px;
+  }
+  body { margin: 0; }
+</style>
+<div style="break-before:page;">Page 1</div>
+<div style="break-before:page;">Page 2</div>
+<div style="break-before:page;">Page 3</div>
diff --git a/tests/wpt/tests/css/selectors/invalidation/is-pseudo-containing-sibling-relationship-in-has.html b/tests/wpt/tests/css/selectors/invalidation/is-pseudo-containing-sibling-relationship-in-has.html
new file mode 100644
index 00000000000..bd5f96a3e27
--- /dev/null
+++ b/tests/wpt/tests/css/selectors/invalidation/is-pseudo-containing-sibling-relationship-in-has.html
@@ -0,0 +1,311 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Selectors Test: :has(:is()) invalidation for sibling change</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
+<style>
+  #test-container > div { background-color: green; }
+  #target1:has(:is(.item + .item + .item)) { background-color: red; }
+  #target2:has(:is(.invalid .item, .item + .item + .item)) { background-color: red; }
+  #target3:has(:is(.item + .item + .item > .child + .child + .child)) { background-color: red; }
+  #target4:has(:is(.item + .item + .item > .child):is(.child + .child + .child)) { background-color: red; }
+  #target5:has(:is(.item + .item + .item > .child)) { background-color: red; }
+  #target6:has(:is(.invalid .item, .item + .item + .item > .child)) { background-color: red; }
+  #target7:has(:is(.item + .item + .item > .child + .child + .child)) { background-color: red; }
+  #target8:has(:is(.child + .child + .child):is(.item + .item + .item > .child)) { background-color: red; }
+  #target9:has(:is(:where(:is(.item + .item + .item) > .child) + .child + .child)) { background-color: red; }
+  #target10:has(:is(.item:nth-child(3))) { background-color: red; }
+  #target11:has(:is(.item:nth-child(3) > .child:nth-child(3))) { background-color: red; }
+  #target12:has(:is(.item:nth-last-child(3))) { background-color: red; }
+  #target13:has(:is(.item:nth-last-child(3) > .child:nth-last-child(3))) { background-color: red; }
+  #target14:has(:is(.item:nth-child(3) > .child)) { background-color: red; }
+  #target15:has(:is(.item:nth-child(3) > .child:nth-child(3))) { background-color: red; }
+  #target16:has(:is(.item:nth-last-child(3) > .child)) { background-color: red; }
+  #target17:has(:is(.item:nth-last-child(3) > .child:nth-last-child(3))) { background-color: red; }
+  .item + .item + .item {
+    #target18:has(&) { background-color: red; }
+    #target19:has(:is(& > .child + .child + .child)) { background-color: red; }
+  }
+  .item + .item + .item > .child {
+    #target20:has(:is(& + .child + .child)) { background-color: red; }
+  }
+</style>
+<div id="test-container">
+  <div id="target1">
+    <div class="item" id="item1">FAIL if you see this text</div>
+    <div class="item"></div>
+    <div class="item">This text should have a green background</div>
+  </div>
+  <div id="target2">
+    <div class="item" id="item2">FAIL if you see this text</div>
+    <div class="item"></div>
+    <div class="item">This text should have a green background</div>
+  </div>
+  <div id="target3">
+    <div class="item"></div>
+    <div class="item"></div>
+    <div class="item">
+      <span class="child" id="item3">(FAIL if you see this text)</span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target4">
+    <div class="item"></div>
+    <div class="item"></div>
+    <div class="item">
+      <span class="child" id="item4">(FAIL if you see this text)</span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target5">
+    <div class="item" id="item5">FAIL if you see this text</div>
+    <div class="item"></div>
+    <div class="item">
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target6">
+    <div class="item" id="item6">FAIL if you see this text</div>
+    <div class="item"></div>
+    <div class="item">
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target7">
+    <div class="item"></div>
+    <div class="item" id="item7">FAIL if you see this text</div>
+    <div class="item">
+      <span class="child"></span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target8">
+    <div class="item"></div>
+    <div class="item" id="item8">FAIL if you see this text</div>
+    <div class="item">
+      <span class="child"></span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target9">
+    <div class="item"></div>
+    <div class="item" id="item9">FAIL if you see this text</div>
+    <div class="item">
+      <span class="child"></span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target10">
+    <div class="item" id="item10">FAIL if you see this text</div>
+    <div class="item"></div>
+    <div class="item">This text should have a green background</div>
+  </div>
+  <div id="target11">
+    <div class="item"></div>
+    <div class="item"></div>
+    <div class="item">
+      <span class="child" id="item11">(FAIL if you see this text)</span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target12">
+    <div class="item">This text should have a green background</div>
+    <div class="item"></div>
+    <div class="item" id="item12">FAIL if you see this text</div>
+  </div>
+  <div id="target13">
+    <div class="item">
+      <span class="child">This text should have a green background</span>
+      <span class="child"></span>
+      <span class="child" id="item13">(FAIL if you see this text)</span>
+    </div>
+    <div class="item"></div>
+    <div class="item"></div>
+  </div>
+  <div id="target14">
+    <div class="item" id="item14">FAIL if you see this text</div>
+    <div class="item"></div>
+    <div class="item">
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target15">
+    <div class="item" id="item15">FAIL if you see this text</div>
+    <div class="item"></div>
+    <div class="item">
+      <span class="child"></span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target16">
+    <div class="item">
+      <span class="child">This text should have a green background</span>
+    </div>
+    <div class="item"></div>
+    <div class="item" id="item16">FAIL if you see this text</div>
+  </div>
+  <div id="target17">
+    <div class="item">
+      <span class="child">This text should have a green background</span>
+      <span class="child"></span>
+      <span class="child"></span>
+    </div>
+    <div class="item"></div>
+    <div class="item" id="item17">FAIL if you see this text</div>
+  </div>
+  <div id="target18">
+    <div class="item" id="item18">FAIL if you see this text</div>
+    <div class="item"></div>
+    <div class="item">This text should have a green background</div>
+  </div>
+  <div id="target19">
+    <div class="item"></div>
+    <div class="item" id="item19">FAIL if you see this text</div>
+    <div class="item">
+      <span class="child"></span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+  <div id="target20">
+    <div class="item"></div>
+    <div class="item" id="item20">FAIL if you see this text</div>
+    <div class="item">
+      <span class="child"></span>
+      <span class="child"></span>
+      <span class="child">This text should have a green background</span>
+    </div>
+  </div>
+</div>
+<script>
+  test(() => {
+    assert_equals(getComputedStyle(target1).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target2).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target3).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target4).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target5).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target6).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target7).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target8).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target9).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target10).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target11).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target12).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target13).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target14).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target15).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target16).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target17).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target18).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target19).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target20).backgroundColor, "rgb(255, 0, 0)");
+  }, "Initially red");
+
+  test(() => {
+    item1.remove();
+    assert_equals(getComputedStyle(target1).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector enclosed by :is() no longer matching after removal (1)");
+
+  test(() => {
+    item2.remove();
+    assert_equals(getComputedStyle(target2).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector enclosed by :is() no longer matching after removal (2)");
+
+  test(() => {
+    item3.remove();
+    assert_equals(getComputedStyle(target3).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector enclosed by :is() no longer matching after removal (3)");
+
+  test(() => {
+    item4.remove();
+    assert_equals(getComputedStyle(target4).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector enclosed by :is() no longer matching after removal (4)");
+
+  test(() => {
+    item5.remove();
+    assert_equals(getComputedStyle(target5).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector in non-subject enclosed by :is() no longer matching after removal (1)");
+
+  test(() => {
+    item6.remove();
+    assert_equals(getComputedStyle(target6).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector in non-subject enclosed by :is() no longer matching after removal (2)");
+
+  test(() => {
+    item7.remove();
+    assert_equals(getComputedStyle(target7).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector in non-subject enclosed by :is() no longer matching after removal (3)");
+
+  test(() => {
+    item8.remove();
+    assert_equals(getComputedStyle(target8).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector in non-subject enclosed by :is() no longer matching after removal (4)");
+
+  test(() => {
+    item9.remove();
+    assert_equals(getComputedStyle(target9).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector in non-subject enclosed by :is() no longer matching after removal (5)");
+
+  test(() => {
+    item10.remove();
+    assert_equals(getComputedStyle(target10).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-child() enclosed by :is() no longer matching after removal (1)");
+
+  test(() => {
+    item11.remove();
+    assert_equals(getComputedStyle(target11).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-child() enclosed by :is() no longer matching after removal (2)");
+
+  test(() => {
+    item12.remove();
+    assert_equals(getComputedStyle(target12).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-last-child() enclosed by :is() no longer matching after removal (1)");
+
+  test(() => {
+    item13.remove();
+    assert_equals(getComputedStyle(target13).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-last-child() enclosed by :is() no longer matching after removal (2)");
+
+  test(() => {
+    item14.remove();
+    assert_equals(getComputedStyle(target14).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-child() in non-subject enclosed by :is() no longer matching after removal (1)");
+
+  test(() => {
+    item15.remove();
+    assert_equals(getComputedStyle(target15).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-child() in non-subject enclosed by :is() no longer matching after removal (2)");
+
+  test(() => {
+    item16.remove();
+    assert_equals(getComputedStyle(target16).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-last-child() in non-subject enclosed by :is() no longer matching after removal (1)");
+
+  test(() => {
+    item17.remove();
+    assert_equals(getComputedStyle(target17).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-last-child() in non-subject enclosed by :is() no longer matching after removal (2)");
+
+  test(() => {
+    item18.remove();
+    assert_equals(getComputedStyle(target18).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector in parent selector enclosed by :is() no longer matching after removal");
+
+  test(() => {
+    item19.remove();
+    assert_equals(getComputedStyle(target19).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector in parent selector non-subject position enclosed by :is() no longer matching after removal (1)");
+
+  test(() => {
+    item20.remove();
+    assert_equals(getComputedStyle(target20).backgroundColor, "rgb(0, 128, 0)");
+  }, "sibling selector in parent selector non-subject position enclosed by :is() no longer matching after removal (2)");
+</script>
diff --git a/tests/wpt/tests/css/selectors/invalidation/not-pseudo-containing-sibling-relationship-in-has.html b/tests/wpt/tests/css/selectors/invalidation/not-pseudo-containing-sibling-relationship-in-has.html
new file mode 100644
index 00000000000..ec6d86198b0
--- /dev/null
+++ b/tests/wpt/tests/css/selectors/invalidation/not-pseudo-containing-sibling-relationship-in-has.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>CSS Selectors Test: :has(:not()) invalidation for sibling change</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
+<style>
+  #test-container > div { background-color: green; }
+  #target1:has(:not(.item, :nth-child(3))) { background-color: red; }
+  #target2:has(:not(.item, :nth-last-child(3))) { background-color: red; }
+</style>
+<div id="test-container">
+  <div id="target1">
+    <div class="item"></div>
+    <div id="item1">This text should have a green background</div>
+  </div>
+  <div id="target2">
+    <div id="item2">This text should have a green background</div>
+    <div class="item"></div>
+  </div>
+</div>
+<script>
+  test(() => {
+    assert_equals(getComputedStyle(target1).backgroundColor, "rgb(255, 0, 0)");
+    assert_equals(getComputedStyle(target2).backgroundColor, "rgb(255, 0, 0)");
+  }, "Initially red");
+
+  function insertDivItemBefore(item) {
+    let div = document.createElement("div");
+    div.classList.add("item");
+    item.parentElement.insertBefore(div, item);
+  }
+
+  function insertDivItemAfter(item) {
+    let div = document.createElement("div");
+    div.classList.add("item");
+    item.parentElement.append(div, item.nextSibling);
+  }
+
+  test(() => {
+    insertDivItemBefore(item1);
+    assert_equals(getComputedStyle(target1).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-child() enclosed by :not() matching after insertion");
+
+  test(() => {
+    insertDivItemAfter(item2);
+    assert_equals(getComputedStyle(target2).backgroundColor, "rgb(0, 128, 0)");
+  }, ":nth-last-child() enclosed by :not() matching after insertion");
+</script>
diff --git a/tests/wpt/tests/custom-elements/throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml b/tests/wpt/tests/custom-elements/throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml
index c0a7f622fbe..c2913a1312e 100644
--- a/tests/wpt/tests/custom-elements/throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml
+++ b/tests/wpt/tests/custom-elements/throw-on-dynamic-markup-insertion-counter-construct-xml-parser.xhtml
@@ -18,23 +18,23 @@
 async function construct_custom_element_in_parser(test, code)
 {
     window.executed = false;
-    window.exception = false;
+    window.exception = null;
     const content_window = await create_window_in_test_async(test, 'application/xml', `<?xml version="1.0" encoding="utf-8"?>
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <script>
 <![CDATA[
-let executed = false;
-let exception = null;
 class CustomElement extends window.HTMLElement {
     constructor() {
         super();
+        let exception = null;
         try {
             ${code}
         } catch (error) {
             exception = error;
         }
-        executed = true;
+        top.executed = true;
+        top.exception = exception;
     }
 }
 customElements.define('some-element', CustomElement);
@@ -43,10 +43,6 @@ customElements.define('some-element', CustomElement);
 </head>
 <body>
 <some-element></some-element>
-<script>
-top.executed = executed;
-top.exception = exception;
-</script>
 </body>
 </html>`);
     let content_document;
diff --git a/tests/wpt/tests/custom-elements/throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml b/tests/wpt/tests/custom-elements/throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml
index 13f664550be..4a3c8ec43b0 100644
--- a/tests/wpt/tests/custom-elements/throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml
+++ b/tests/wpt/tests/custom-elements/throw-on-dynamic-markup-insertion-counter-reactions-xml-parser.xhtml
@@ -18,23 +18,23 @@
 async function custom_element_reactions_in_parser(test, code)
 {
     window.executed = false;
-    window.exception = false;
+    window.exception = null;
     const content_window = await create_window_in_test_async(test, 'application/xml', `<?xml version="1.0" encoding="utf-8"?>
 <html xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <script>
 <![CDATA[
-let executed = false;
-let exception = null;
 class CustomElement extends window.HTMLElement {
     constructor() {
         super();
+        let exception = null;
         try {
             ${code}
         } catch (error) {
             exception = error;
         }
-        executed = true;
+        top.executed = true;
+        top.exception = exception;
     }
 }
 CustomElement.observedAttributes = ['title'];
@@ -44,10 +44,6 @@ customElements.define('some-element', CustomElement);
 </head>
 <body>
 <some-element title="some title"></some-element>
-<script>
-top.executed = executed;
-top.exception = exception;
-</script>
 </body>
 </html>`);
     let content_document;
diff --git a/tests/wpt/tests/dom/events/scrolling/scrollend-event-fires-to-iframe-inner-frame.html b/tests/wpt/tests/dom/events/scrolling/scrollend-event-fires-to-iframe-inner-frame.html
new file mode 100644
index 00000000000..3657a8b8771
--- /dev/null
+++ b/tests/wpt/tests/dom/events/scrolling/scrollend-event-fires-to-iframe-inner-frame.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+  <style>
+    body {
+      margin: 0px;
+    }
+    #spacer {
+      height: 120vh;
+      width: 120vw;
+      border: solid 1px black;
+    }
+    #scroller {
+      height: 200px;
+      width: 200px;
+      overflow: scroll;
+      border: solid 1px red;
+    }
+    #inner-spacer {
+      height: 400px;
+      width: 400px;
+      border: solid 1px black;
+    }
+  </style>
+  <body>
+    <div id="scroller">
+      <div id="inner-spacer"></div>
+    </div>
+    <div id="spacer"></div>
+  </body>
+</html>
diff --git a/tests/wpt/tests/dom/events/scrolling/scrollend-event-fires-to-iframe-window.html b/tests/wpt/tests/dom/events/scrolling/scrollend-event-fires-to-iframe-window.html
new file mode 100644
index 00000000000..1a20751bd53
--- /dev/null
+++ b/tests/wpt/tests/dom/events/scrolling/scrollend-event-fires-to-iframe-window.html
@@ -0,0 +1,88 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+  <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="/resources/testdriver.js"></script>
+  <script src="/resources/testdriver-actions.js"></script>
+  <script src="/resources/testdriver-vendor.js"></script>
+  <script src="scroll_support.js"></script>
+  <script src="scrollend-user-scroll-common.js"></script>
+  <style>
+    #targetDiv {
+      width: 200px;
+      height: 200px;
+      overflow: scroll;
+    }
+
+    #innerDiv {
+      width: 400px;
+      height: 400px;
+    }
+
+    iframe {
+      height: 300px;
+      width: 300px;
+    }
+  </style>
+</head>
+
+<body style="margin:0" onload=runTest()>
+  <iframe id="frame" src="scrollend-event-fires-to-iframe-inner-frame.html"></iframe>
+</body>
+
+<script>
+  function runTest() {
+    let target_div = frame.contentDocument.getElementById("scroller");
+    //Tests for scrollend events on an element within an iframe.
+    promise_test(async (t) => {
+      await test_scrollend_on_touch_drag(t, target_div);
+    }, 'Tests that the target_div within iframe gets scrollend event when touch ' +
+    'dragging.');
+
+    promise_test(async (t) => {
+      await test_scrollend_on_scrollbar_gutter_click(t, target_div);
+    }, 'Tests that the target_div within iframe gets scrollend event when ' +
+    'clicking scrollbar.');
+
+    // Same issue as previous test.
+    promise_test(async (t) => {
+      await test_scrollend_on_scrollbar_thumb_drag(t, target_div);
+    }, 'Tests that the target_div within iframe gets scrollend event when ' +
+    'dragging the scrollbar thumb.');
+
+    promise_test(async (t) => {
+      await test_scrollend_on_mousewheel_scroll(t, target_div);
+    }, 'Tests that the target_div within iframe gets scrollend event when mouse ' +
+    'wheel scrolling.');
+
+    promise_test(async (t) => {
+      await test_scrollend_on_keyboard_scroll(t, target_div);
+    }, 'Tests that the target_div within iframe gets scrollend event when ' +
+    'sending DOWN key to the target.');
+
+    // Test for scrollend events on the iframe's window.
+    // TODO: add similar tests with different input modes.
+    promise_test(async (t) => {
+      let scroller = frame.contentDocument.scrollingElement;
+
+      await waitForScrollReset(t, scroller);
+      await waitForCompositorReady();
+
+      const targetScrollendPromise = waitForScrollendEvent(t, frame.contentDocument);
+      verifyNoScrollendOnDocument(t);
+
+      let x = target_div.getBoundingClientRect().width + 20;
+      let y = 20;
+      let dy = 30;
+      await new test_driver.Actions().scroll(x, y, 0, dy).send();
+      await targetScrollendPromise;
+      assert_equals(scroller.scrollTop, dy, 'window scrolled by mousewheel');
+    }, 'scrollend fires to iframe window on mousewheelscroll');
+  }
+
+</script>
+
+</html>
\ No newline at end of file
diff --git a/tests/wpt/tests/dom/events/scrolling/scrollend-event-for-user-scroll.html b/tests/wpt/tests/dom/events/scrolling/scrollend-event-for-user-scroll.html
index 561c90ca94c..a06843a35e7 100644
--- a/tests/wpt/tests/dom/events/scrolling/scrollend-event-for-user-scroll.html
+++ b/tests/wpt/tests/dom/events/scrolling/scrollend-event-for-user-scroll.html
@@ -8,6 +8,7 @@
 <script src="/resources/testdriver-actions.js"></script>
 <script src="/resources/testdriver-vendor.js"></script>
 <script src="scroll_support.js"></script>
+<script src="scrollend-user-scroll-common.js"></script>
 <style>
     #targetDiv {
         width: 200px;
@@ -33,155 +34,31 @@ var target_div = document.getElementById('targetDiv');
 
 function runTest() {
   promise_test(async (t) => {
-    // Skip the test on a Mac as they do not support touch screens.
-    const isMac = navigator.platform.toUpperCase().indexOf('MAC')>=0;
-    if (isMac)
-      return;
-
-    await resetTargetScrollState(t, target_div);
-    await waitForCompositorReady();
-
-    const timeout = 3000; // Because we have two pauses we need longer timeout
-    const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div, timeout);
-    verifyNoScrollendOnDocument(t);
-
-    let scrollend_count = 0;
-    const scrollend_listener = () => {
-      scrollend_count += 1;
-    };
-    target_div.addEventListener("scrollend", scrollend_listener);
-    t.add_cleanup(() => {
-      target_div.removeEventListener('scrollend', scrollend_listener);
-    });
-
-    // Perform a touch drag on target div and wait for target_div to get
-    // a scrollend event.
-    await new test_driver.Actions()
-        .addPointer('TestPointer', 'touch')
-        .pointerMove(0, 0, {origin: target_div}) // 0, 0 is center of element.
-        .pointerDown()
-        .addTick()
-        .pointerMove(0, -40, {origin: target_div}) //  Drag up to move down.
-        .addTick()
-        .pause(200) //  Prevent inertial scroll.
-        .pointerMove(0, -60, {origin: target_div})
-        .addTick()
-        .pause(200) //  Prevent inertial scroll.
-        .pointerUp()
-        .send();
-
-    await targetScrollendPromise;
-
-    assert_true(target_div.scrollTop > 0);
-    await verifyScrollStopped(t, target_div);
-    assert_equals(scrollend_count, 1);
+    await test_scrollend_on_touch_drag(t, target_div);
   }, 'Tests that the target_div gets scrollend event when touch dragging.');
 
   promise_test(async (t) => {
-    // Skip test on platforms that do not have a visible scrollbar (e.g.
-    // overlay scrollbar).
-    const scrollbar_width = target_div.offsetWidth - target_div.clientWidth;
-    if (scrollbar_width == 0)
-      return;
-
-    await resetTargetScrollState(t, target_div);
-    await waitForCompositorReady();
-
-    const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div);
-    verifyNoScrollendOnDocument(t);
-
-    const bounds = target_div.getBoundingClientRect();
-    // Some versions of webdriver have been known to frown at non-int arguments
-    // to pointerMove.
-    const x = bounds.right - Math.round(scrollbar_width / 2);
-    const y = bounds.bottom - 20;
-    await new test_driver.Actions()
-        .addPointer('TestPointer', 'mouse')
-        .pointerMove(x, y, {origin: 'viewport'})
-        .pointerDown()
-        .addTick()
-        .pointerUp()
-        .send();
-
-    await targetScrollendPromise;
-    assert_true(target_div.scrollTop > 0);
-    await verifyScrollStopped(t, target_div);
+    await test_scrollend_on_scrollbar_gutter_click(t, target_div);
   }, 'Tests that the target_div gets scrollend event when clicking ' +
      'scrollbar.');
 
   // Same issue as previous test.
   promise_test(async (t) => {
-    // Skip test on platforms that do not have a visible scrollbar (e.g.
-    // overlay scrollbar).
-    const scrollbar_width = target_div.offsetWidth - target_div.clientWidth;
-    if (scrollbar_width == 0)
-      return;
-
-    await resetTargetScrollState(t, target_div);
-    await waitForCompositorReady();
-
-    const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div, 1000);
-    verifyNoScrollendOnDocument(t);
-
-    const bounds = target_div.getBoundingClientRect();
-    // Some versions of webdriver have been known to frown at non-int arguments
-    // to pointerMove.
-    const x = bounds.right - Math.round(scrollbar_width / 2);
-    const y = bounds.top + 30;
-    const dy = 30;
-    await new test_driver.Actions()
-        .addPointer('TestPointer', 'mouse')
-        .pointerMove(x, y, { origin: 'viewport' })
-        .pointerDown()
-        .pointerMove(x, y + dy, { origin: 'viewport' })
-        .addTick()
-        .pointerUp()
-        .send();
-
-    await targetScrollendPromise;
-    assert_true(target_div.scrollTop > 0);
-    await verifyScrollStopped(t, target_div);
+    await test_scrollend_on_scrollbar_thumb_drag(t, target_div);
   }, 'Tests that the target_div gets scrollend event when dragging the ' +
       'scrollbar thumb.');
 
   promise_test(async (t) => {
-    await resetTargetScrollState(t, target_div);
-    await waitForCompositorReady();
-
-    const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div);
-    verifyNoScrollendOnDocument(t);
-
-    const x = 0;
-    const y = 0;
-    const dx = 0;
-    const dy = 40;
-    const duration_ms = 10;
-    await new test_driver.Actions()
-        .scroll(x, y, dx, dy, { origin: target_div }, duration_ms)
-        .send();
-
-    await targetScrollendPromise;
-    assert_true(target_div.scrollTop > 0);
-    await verifyScrollStopped(t, target_div);
+    await test_scrollend_on_mousewheel_scroll(t, target_div);
   }, 'Tests that the target_div gets scrollend event when mouse wheel ' +
      'scrolling.');
 
   promise_test(async (t) => {
-    await resetTargetScrollState(t, target_div);
-    await waitForCompositorReady();
-
-    verifyNoScrollendOnDocument(t);
-    const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div);
-
-    target_div.focus();
-    window.test_driver.send_keys(target_div, '\ue015');
-
-    await targetScrollendPromise;
-    assert_true(target_div.scrollTop > 0);
-    await verifyScrollStopped(t, target_div);
+    await test_scrollend_on_keyboard_scroll(t, target_div);
   }, 'Tests that the target_div gets scrollend event when sending DOWN key ' +
      'to the target.');
 }
 
+
 </script>
 </html>
diff --git a/tests/wpt/tests/dom/events/scrolling/scrollend-user-scroll-common.js b/tests/wpt/tests/dom/events/scrolling/scrollend-user-scroll-common.js
new file mode 100644
index 00000000000..4bf8f927ff2
--- /dev/null
+++ b/tests/wpt/tests/dom/events/scrolling/scrollend-user-scroll-common.js
@@ -0,0 +1,146 @@
+
+async function test_scrollend_on_touch_drag(t, target_div) {
+  // Skip the test on a Mac as they do not support touch screens.
+  const isMac = navigator.platform.toUpperCase().indexOf('MAC') >= 0;
+  if (isMac)
+    return;
+
+  await resetTargetScrollState(t, target_div);
+  await waitForCompositorReady();
+
+  const timeout = 3000; // Because we have two pauses we need longer timeout
+  const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div, timeout);
+  verifyNoScrollendOnDocument(t);
+
+  let scrollend_count = 0;
+  const scrollend_listener = () => {
+    scrollend_count += 1;
+  };
+  target_div.addEventListener("scrollend", scrollend_listener);
+  t.add_cleanup(() => {
+    target_div.removeEventListener('scrollend', scrollend_listener);
+  });
+
+  // Perform a touch drag on target div and wait for target_div to get
+  // a scrollend event.
+  await new test_driver.Actions()
+    .addPointer('TestPointer', 'touch')
+    .pointerMove(0, 0, { origin: target_div }) // 0, 0 is center of element.
+    .pointerDown()
+    .addTick()
+    .pointerMove(0, -40, { origin: target_div }) //  Drag up to move down.
+    .addTick()
+    .pause(200) //  Prevent inertial scroll.
+    .pointerMove(0, -60, { origin: target_div })
+    .addTick()
+    .pause(200) //  Prevent inertial scroll.
+    .pointerUp()
+    .send();
+
+  await targetScrollendPromise;
+
+  assert_true(target_div.scrollTop > 0);
+  await verifyScrollStopped(t, target_div);
+  assert_equals(scrollend_count, 1);
+}
+
+async function test_scrollend_on_scrollbar_gutter_click(t, target_div) {
+  // Skip test on platforms that do not have a visible scrollbar (e.g.
+  // overlay scrollbar).
+  const scrollbar_width = target_div.offsetWidth - target_div.clientWidth;
+  if (scrollbar_width == 0)
+    return;
+
+  await resetTargetScrollState(t, target_div);
+  await waitForCompositorReady();
+
+  const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div);
+  verifyNoScrollendOnDocument(t);
+
+  const bounds = target_div.getBoundingClientRect();
+  // Some versions of webdriver have been known to frown at non-int arguments
+  // to pointerMove.
+  const x = bounds.right - Math.round(scrollbar_width / 2);
+  const y = bounds.bottom - 20;
+  await new test_driver.Actions()
+    .addPointer('TestPointer', 'mouse')
+    .pointerMove(x, y, { origin: 'viewport' })
+    .pointerDown()
+    .addTick()
+    .pointerUp()
+    .send();
+
+  await targetScrollendPromise;
+  assert_true(target_div.scrollTop > 0);
+  await verifyScrollStopped(t, target_div);
+}
+
+// Same issue as previous test.
+async function test_scrollend_on_scrollbar_thumb_drag(t, target_div) {
+  // Skip test on platforms that do not have a visible scrollbar (e.g.
+  // overlay scrollbar).
+  const scrollbar_width = target_div.offsetWidth - target_div.clientWidth;
+  if (scrollbar_width == 0)
+    return;
+
+  await resetTargetScrollState(t, target_div);
+  await waitForCompositorReady();
+
+  const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div, 1000);
+  verifyNoScrollendOnDocument(t);
+
+  const bounds = target_div.getBoundingClientRect();
+  // Some versions of webdriver have been known to frown at non-int arguments
+  // to pointerMove.
+  const x = bounds.right - Math.round(scrollbar_width / 2);
+  const y = bounds.top + 30;
+  const dy = 30;
+  await new test_driver.Actions()
+    .addPointer('TestPointer', 'mouse')
+    .pointerMove(x, y, { origin: 'viewport' })
+    .pointerDown()
+    .pointerMove(x, y + dy, { origin: 'viewport' })
+    .addTick()
+    .pointerUp()
+    .send();
+
+  await targetScrollendPromise;
+  assert_true(target_div.scrollTop > 0);
+  await verifyScrollStopped(t, target_div);
+}
+
+async function test_scrollend_on_mousewheel_scroll(t, target_div) {
+  await resetTargetScrollState(t, target_div);
+  await waitForCompositorReady();
+
+  const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div);
+  verifyNoScrollendOnDocument(t);
+
+  const x = 0;
+  const y = 0;
+  const dx = 0;
+  const dy = 40;
+  const duration_ms = 10;
+  await new test_driver.Actions()
+    .scroll(x, y, dx, dy, { origin: target_div }, duration_ms)
+    .send();
+
+  await targetScrollendPromise;
+  assert_true(target_div.scrollTop > 0);
+  await verifyScrollStopped(t, target_div);
+}
+
+async function test_scrollend_on_keyboard_scroll(t, target_div) {
+  await resetTargetScrollState(t, target_div);
+  await waitForCompositorReady();
+
+  verifyNoScrollendOnDocument(t);
+  const targetScrollendPromise = createScrollendPromiseForTarget(t, target_div);
+
+  target_div.focus();
+  window.test_driver.send_keys(target_div, '\ue015');
+
+  await targetScrollendPromise;
+  assert_true(target_div.scrollTop > 0);
+  await verifyScrollStopped(t, target_div);
+}
diff --git a/tests/wpt/tests/editing/crashtests/remove-editing-host-during-forwarddelete.html b/tests/wpt/tests/editing/crashtests/remove-editing-host-during-forwarddelete.html
index 9c803dc1327..2b23c34607c 100644
--- a/tests/wpt/tests/editing/crashtests/remove-editing-host-during-forwarddelete.html
+++ b/tests/wpt/tests/editing/crashtests/remove-editing-host-during-forwarddelete.html
@@ -13,12 +13,22 @@ svg {
 </style>
 <script>
 document.addEventListener("DOMContentLoaded", async () => {
+  const dir = document.querySelector("dir");
   const waitForAnimationEnd = new Promise(resolve => {
     let count = 0;
     function onAnimationEnd() {
       window.find("AAAAAAAAAA");
       document.execCommand("forwardDelete");
-      if (++count == 2) {
+      count++;
+      function getRemainingEventCount() {
+        if (count >= 2) {
+          return 0;
+        }
+        // If `animationend` is delayed and `<dir>` has already been removed,
+        // `animationend` for it is never fired anymore.
+        return !dir.isConnected ? 0 : 1;
+      }
+      if (!getRemainingEventCount()) {
         window.removeEventListener("animationend", onAnimationEnd);
         resolve();
       }
@@ -27,7 +37,6 @@ document.addEventListener("DOMContentLoaded", async () => {
   });
   window.find("A");
   document.execCommand("insertHTML", false, "AAAAAAAAAAAAAAAA");
-  const dir = document.querySelector("dir");
   dir.addEventListener("DOMNodeRemoved", event => {
     dir.remove();
   });
diff --git a/tests/wpt/tests/editing/include/editor-test-utils.js b/tests/wpt/tests/editing/include/editor-test-utils.js
index a4c24c94edb..24527d4a793 100644
--- a/tests/wpt/tests/editing/include/editor-test-utils.js
+++ b/tests/wpt/tests/editing/include/editor-test-utils.js
@@ -32,10 +32,13 @@ class EditorTestUtils {
 
   sendKey(key, modifier) {
     if (!modifier) {
-      return new this.window.test_driver.Actions()
-        .keyDown(key)
-        .keyUp(key)
-        .send();
+      return this.window.test_driver.send_keys(this.editingHost, key)
+        .catch(() => {
+          return new this.window.test_driver.Actions()
+          .keyDown(key)
+          .keyUp(key)
+          .send();
+        });
     }
     return new this.window.test_driver.Actions()
       .keyDown(modifier)
diff --git a/tests/wpt/tests/html/browsers/browsing-the-web/read-media/cross-origin-video.html b/tests/wpt/tests/html/browsers/browsing-the-web/read-media/cross-origin-video.html
index b99658facb2..5f3e95cce40 100644
--- a/tests/wpt/tests/html/browsers/browsing-the-web/read-media/cross-origin-video.html
+++ b/tests/wpt/tests/html/browsers/browsing-the-web/read-media/cross-origin-video.html
@@ -21,6 +21,10 @@ promise_test(async () => {
     + '/service-workers/service-worker/resources/fetch-access-control.py?'
     + 'VIDEO%26PartialContent';
 
+  let v = document.createElement("video");
+  if (v.canPlayType("video/ogv") == "")
+    frame.src += "%26mp4";
+
   document.body.appendChild(frame);
   await new Promise(resolve => frame.onload = resolve);
 
diff --git a/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js b/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
index 6978cef8321..047d5cf821e 100644
--- a/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
+++ b/tests/wpt/tests/html/browsers/browsing-the-web/remote-context-helper/resources/remote-context-helper.js
@@ -180,9 +180,13 @@
      * access to it.
      * @private
      * @param {Object} options
-     * @param {(url: string) => Promise<undefined>} options.executorCreator A
+     * @param {(url: string) => Promise<undefined>} [options.executorCreator] A
      *     function that takes a URL and causes the browser to navigate some
-     *     window to that URL, e.g. via an iframe or a new window.
+     *     window to that URL, e.g. via an iframe or a new window. If this is
+     *     not supplied, then the returned RemoteContextWrapper won't actually
+     *     be communicating with something yet, and something will need to
+     *     navigate to it using its `url` property, before communication can be
+     *     established.
      * @param {RemoteContextConfig|object} [options.extraConfig] If supplied,
      *     extra configuration for this remote context to be merged with
      *     `this`'s existing config. If it's not a `RemoteContextConfig`, it
@@ -216,7 +220,10 @@
         url.searchParams.append('startOn', config.startOn);
       }
 
-      await executorCreator(url.href);
+      if (executorCreator) {
+        await executorCreator(url.href);
+      }
+
       return new RemoteContextWrapper(new RemoteContext(uuid), this, url.href);
     }
 
@@ -237,15 +244,6 @@
         extraConfig,
       });
     }
-
-    async createContextWithUrl(extraConfig) {
-      let saveUrl;
-      let wrapper = await this.createContext({
-        executorCreator: (url) => {saveUrl = url},
-        extraConfig,
-      });
-      return [wrapper, saveUrl];
-    }
   }
   // Export this class.
   self.RemoteContextHelper = RemoteContextHelper;
@@ -314,9 +312,10 @@
      * This should only be constructed by `RemoteContextHelper`.
      * @private
      */
-    constructor(context, helper) {
+    constructor(context, helper, url) {
       this.context = context;
       this.helper = helper;
+      this.url = url;
     }
 
     /**
diff --git a/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontStretch.settings.html b/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontStretch.settings.html
new file mode 100644
index 00000000000..b19eced8917
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.fontStretch.settings.html
@@ -0,0 +1,81 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.text.drawing.style.fontStretch.settings</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.text.drawing.style.fontStretch.settings</h1>
+<p class="desc">Testing value setting of fontStretch in Canvas</p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+
+<ul id="d"></ul>
+<script>
+var t = async_test("Testing value setting of fontStretch in Canvas");
+_addTest(function(canvas, ctx) {
+
+  // Setting textRendering with lower cases
+  ctx.fontStretch = "ultra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-condensed", "ctx.fontStretch", "\"ultra-condensed\"");
+
+  ctx.fontStretch = "extra-condensed";
+  _assertSame(ctx.fontStretch, "extra-condensed", "ctx.fontStretch", "\"extra-condensed\"");
+
+  ctx.fontStretch = "condensed";
+  _assertSame(ctx.fontStretch, "condensed", "ctx.fontStretch", "\"condensed\"");
+
+  ctx.fontStretch = "semi-condensed";
+  _assertSame(ctx.fontStretch, "semi-condensed", "ctx.fontStretch", "\"semi-condensed\"");
+
+  ctx.fontStretch = "normal";
+  _assertSame(ctx.fontStretch, "normal", "ctx.fontStretch", "\"normal\"");
+
+  ctx.fontStretch = "semi-expanded";
+  _assertSame(ctx.fontStretch, "semi-expanded", "ctx.fontStretch", "\"semi-expanded\"");
+
+  ctx.fontStretch = "expanded";
+  _assertSame(ctx.fontStretch, "expanded", "ctx.fontStretch", "\"expanded\"");
+
+  ctx.fontStretch = "extra-expanded";
+  _assertSame(ctx.fontStretch, "extra-expanded", "ctx.fontStretch", "\"extra-expanded\"");
+
+  ctx.fontStretch = "ultra-expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  // Setting fontStretch with lower cases and upper cases word,
+  // these values should be ignored.
+  ctx.fontStretch = "ulTra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Extra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "cOndensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Semi-Condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "normaL";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "semi-Expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "eXtra-expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "abcd";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+});
+</script>
+
diff --git a/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.textRendering.settings.html b/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.textRendering.settings.html
index 03b35dfaa9d..dee856842ae 100644
--- a/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.textRendering.settings.html
+++ b/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.drawing.style.textRendering.settings.html
@@ -19,37 +19,61 @@
 var t = async_test("Testing basic functionalities of textRendering in Canvas");
 _addTest(function(canvas, ctx) {
 
-  // Setting textRendering with lower cases
+  // Setting textRendering with correct case.
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
+  ctx.textRendering = "optimizeSpeed";
+  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
+
+  ctx.textRendering = "optimizeLegibility";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "geometricPrecision";
+  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+
   ctx.textRendering = "auto";
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
-  ctx.textRendering = "optimizespeed";
-  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
-
-  ctx.textRendering = "optimizelegibility";
-  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
-
-  ctx.textRendering = "geometricprecision";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
-
-  // Setting textRendering with lower cases and upper cases word.
-  ctx.textRendering = "aUto";
+  // Setting textRendering with incorrect case is ignored.
+  ctx.textRendering = "OPtimizeSpeed";
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
-  ctx.textRendering = "OPtimizeSpeed";
-  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
-
   ctx.textRendering = "OPtimizELEgibility";
-  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
   ctx.textRendering = "GeometricPrecision";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizespeed";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizelegibility";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "geometricprecision";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizeLegibility";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "AUTO";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "Auto";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
 
   // Setting textRendering with non-existing font variant.
   ctx.textRendering = "abcd";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "normal";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "auto";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
 });
 </script>
diff --git a/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.baselines.html b/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.baselines.html
index 95fac522d94..f5d14923961 100644
--- a/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.baselines.html
+++ b/tests/wpt/tests/html/canvas/element/drawing-text-to-the-canvas/2d.text.measure.baselines.html
@@ -30,17 +30,17 @@ _addTest(function(canvas, ctx) {
   var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
   document.fonts.add(f);
   document.fonts.ready.then(() => {
-       step_timeout(t.step_func_done(function () {
+      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('A').alphabeticBaseline), 0, "Math.abs(ctx.measureText('A').alphabeticBaseline)", "0");
+          _assertSame(ctx.measureText('A').ideographicBaseline, 6.25, "ctx.measureText('A').ideographicBaseline", "6.25");
+          _assertSame(ctx.measureText('A').hangingBaseline, 25, "ctx.measureText('A').hangingBaseline", "25");
 
-          _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");
+          _assertSame(Math.abs(ctx.measureText('ABCD').alphabeticBaseline), 0, "Math.abs(ctx.measureText('ABCD').alphabeticBaseline)", "0");
+          _assertSame(ctx.measureText('ABCD').ideographicBaseline, 6.25, "ctx.measureText('ABCD').ideographicBaseline", "6.25");
+          _assertSame(ctx.measureText('ABCD').hangingBaseline, 25, "ctx.measureText('ABCD').hangingBaseline", "25");
       }), 500);
   });
 
diff --git a/tests/wpt/tests/html/canvas/element/text-styles/2d.text.draw.baseline.hanging.html b/tests/wpt/tests/html/canvas/element/text-styles/2d.text.draw.baseline.hanging.html
index 3ad15f31501..7b3a0a9373b 100644
--- a/tests/wpt/tests/html/canvas/element/text-styles/2d.text.draw.baseline.hanging.html
+++ b/tests/wpt/tests/html/canvas/element/text-styles/2d.text.draw.baseline.hanging.html
@@ -33,7 +33,7 @@ _addTest(function(canvas, ctx) {
       ctx.fillRect(0, 0, 100, 50);
       ctx.fillStyle = '#0f0';
       ctx.textBaseline = 'hanging';
-      ctx.fillText('CC', 0, -30);
+      ctx.fillText('CC', 0, 12.5);
       _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
diff --git a/tests/wpt/tests/html/canvas/element/text-styles/2d.text.draw.baseline.ideographic.html b/tests/wpt/tests/html/canvas/element/text-styles/2d.text.draw.baseline.ideographic.html
index 8d402223a4f..8da9aabb942 100644
--- a/tests/wpt/tests/html/canvas/element/text-styles/2d.text.draw.baseline.ideographic.html
+++ b/tests/wpt/tests/html/canvas/element/text-styles/2d.text.draw.baseline.ideographic.html
@@ -33,7 +33,7 @@ _addTest(function(canvas, ctx) {
       ctx.fillRect(0, 0, 100, 50);
       ctx.fillStyle = '#0f0';
       ctx.textBaseline = 'ideographic';
-      ctx.fillText('CC', 0, 81.25);
+      ctx.fillText('CC', 0, 31.25);
       _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.html
index 0bd15ff0068..0b822834328 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.html
@@ -30,7 +30,7 @@ t.step(function() {
       ctx.fillRect(0, 0, 100, 50);
       ctx.fillStyle = '#0f0';
       ctx.textBaseline = 'hanging';
-      ctx.fillText('CC', 0, -30);
+      ctx.fillText('CC', 0, 12.5);
       _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.js
index 4a5ced7b38f..fca74d69381 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.hanging.worker.js
@@ -26,7 +26,7 @@ t.step(function() {
       ctx.fillRect(0, 0, 100, 50);
       ctx.fillStyle = '#0f0';
       ctx.textBaseline = 'hanging';
-      ctx.fillText('CC', 0, -30);
+      ctx.fillText('CC', 0, 12.5);
       _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.html
index 3a1d6e5159c..c996444b860 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.html
@@ -30,7 +30,7 @@ t.step(function() {
       ctx.fillRect(0, 0, 100, 50);
       ctx.fillStyle = '#0f0';
       ctx.textBaseline = 'ideographic';
-      ctx.fillText('CC', 0, 81.25);
+      ctx.fillText('CC', 0, 31.25);
       _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.js
index b39c10b74f0..0ffa6fe299a 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.draw.baseline.ideographic.worker.js
@@ -26,7 +26,7 @@ t.step(function() {
       ctx.fillRect(0, 0, 100, 50);
       ctx.fillStyle = '#0f0';
       ctx.textBaseline = 'ideographic';
-      ctx.fillText('CC', 0, 81.25);
+      ctx.fillText('CC', 0, 31.25);
       _assertPixelApprox(canvas, 5,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 95,5, 0,255,0,255, 2);
       _assertPixelApprox(canvas, 25,25, 0,255,0,255, 2);
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.html
new file mode 100644
index 00000000000..95405a18a56
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.html
@@ -0,0 +1,82 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.text.drawing.style.fontStretch.settings</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+
+<h1>2d.text.drawing.style.fontStretch.settings</h1>
+<p class="desc">Testing value setting of fontStretch in Canvas</p>
+
+
+<script>
+var t = async_test("Testing value setting of fontStretch in Canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // Setting textRendering with lower cases
+  ctx.fontStretch = "ultra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-condensed", "ctx.fontStretch", "\"ultra-condensed\"");
+
+  ctx.fontStretch = "extra-condensed";
+  _assertSame(ctx.fontStretch, "extra-condensed", "ctx.fontStretch", "\"extra-condensed\"");
+
+  ctx.fontStretch = "condensed";
+  _assertSame(ctx.fontStretch, "condensed", "ctx.fontStretch", "\"condensed\"");
+
+  ctx.fontStretch = "semi-condensed";
+  _assertSame(ctx.fontStretch, "semi-condensed", "ctx.fontStretch", "\"semi-condensed\"");
+
+  ctx.fontStretch = "normal";
+  _assertSame(ctx.fontStretch, "normal", "ctx.fontStretch", "\"normal\"");
+
+  ctx.fontStretch = "semi-expanded";
+  _assertSame(ctx.fontStretch, "semi-expanded", "ctx.fontStretch", "\"semi-expanded\"");
+
+  ctx.fontStretch = "expanded";
+  _assertSame(ctx.fontStretch, "expanded", "ctx.fontStretch", "\"expanded\"");
+
+  ctx.fontStretch = "extra-expanded";
+  _assertSame(ctx.fontStretch, "extra-expanded", "ctx.fontStretch", "\"extra-expanded\"");
+
+  ctx.fontStretch = "ultra-expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  // Setting fontStretch with lower cases and upper cases word,
+  // these values should be ignored.
+  ctx.fontStretch = "ulTra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Extra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "cOndensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Semi-Condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "normaL";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "semi-Expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "eXtra-expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "abcd";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+  t.done();
+
+});
+</script>
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.worker.js
new file mode 100644
index 00000000000..ff10a742b58
--- /dev/null
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.fontStretch.settings.worker.js
@@ -0,0 +1,77 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.text.drawing.style.fontStretch.settings
+// Description:Testing value setting of fontStretch in Canvas
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Testing value setting of fontStretch in Canvas");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+  var canvas = new OffscreenCanvas(100, 50);
+  var ctx = canvas.getContext('2d');
+
+  // Setting textRendering with lower cases
+  ctx.fontStretch = "ultra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-condensed", "ctx.fontStretch", "\"ultra-condensed\"");
+
+  ctx.fontStretch = "extra-condensed";
+  _assertSame(ctx.fontStretch, "extra-condensed", "ctx.fontStretch", "\"extra-condensed\"");
+
+  ctx.fontStretch = "condensed";
+  _assertSame(ctx.fontStretch, "condensed", "ctx.fontStretch", "\"condensed\"");
+
+  ctx.fontStretch = "semi-condensed";
+  _assertSame(ctx.fontStretch, "semi-condensed", "ctx.fontStretch", "\"semi-condensed\"");
+
+  ctx.fontStretch = "normal";
+  _assertSame(ctx.fontStretch, "normal", "ctx.fontStretch", "\"normal\"");
+
+  ctx.fontStretch = "semi-expanded";
+  _assertSame(ctx.fontStretch, "semi-expanded", "ctx.fontStretch", "\"semi-expanded\"");
+
+  ctx.fontStretch = "expanded";
+  _assertSame(ctx.fontStretch, "expanded", "ctx.fontStretch", "\"expanded\"");
+
+  ctx.fontStretch = "extra-expanded";
+  _assertSame(ctx.fontStretch, "extra-expanded", "ctx.fontStretch", "\"extra-expanded\"");
+
+  ctx.fontStretch = "ultra-expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  // Setting fontStretch with lower cases and upper cases word,
+  // these values should be ignored.
+  ctx.fontStretch = "ulTra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Extra-condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "cOndensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Semi-Condensed";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "normaL";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "semi-Expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "Expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "eXtra-expanded";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+
+  ctx.fontStretch = "abcd";
+  _assertSame(ctx.fontStretch, "ultra-expanded", "ctx.fontStretch", "\"ultra-expanded\"");
+  t.done();
+});
+done();
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.html
index 47094dc91fa..3fc07d54788 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.html
@@ -20,37 +20,62 @@ t.step(function() {
   var canvas = new OffscreenCanvas(100, 50);
   var ctx = canvas.getContext('2d');
 
-  // Setting textRendering with lower cases
+  // Setting textRendering with correct case.
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
+  ctx.textRendering = "optimizeSpeed";
+  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
+
+  ctx.textRendering = "optimizeLegibility";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "geometricPrecision";
+  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+
   ctx.textRendering = "auto";
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
-  ctx.textRendering = "optimizespeed";
-  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
-
-  ctx.textRendering = "optimizelegibility";
-  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
-
-  ctx.textRendering = "geometricprecision";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
-
-  // Setting textRendering with lower cases and upper cases word.
-  ctx.textRendering = "aUto";
+  // Setting textRendering with incorrect case is ignored.
+  ctx.textRendering = "OPtimizeSpeed";
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
-  ctx.textRendering = "OPtimizeSpeed";
-  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
-
   ctx.textRendering = "OPtimizELEgibility";
-  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
   ctx.textRendering = "GeometricPrecision";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizespeed";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizelegibility";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "geometricprecision";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizeLegibility";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "AUTO";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "Auto";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
 
   // Setting textRendering with non-existing font variant.
   ctx.textRendering = "abcd";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "normal";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "auto";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
   t.done();
 
 });
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.js
index ca5741de954..c37f2e342f2 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.drawing.style.textRendering.settings.worker.js
@@ -16,37 +16,62 @@ t.step(function() {
   var canvas = new OffscreenCanvas(100, 50);
   var ctx = canvas.getContext('2d');
 
-  // Setting textRendering with lower cases
+  // Setting textRendering with correct case.
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
+  ctx.textRendering = "optimizeSpeed";
+  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
+
+  ctx.textRendering = "optimizeLegibility";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "geometricPrecision";
+  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+
   ctx.textRendering = "auto";
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
-  ctx.textRendering = "optimizespeed";
-  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
-
-  ctx.textRendering = "optimizelegibility";
-  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
-
-  ctx.textRendering = "geometricprecision";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
-
-  // Setting textRendering with lower cases and upper cases word.
-  ctx.textRendering = "aUto";
+  // Setting textRendering with incorrect case is ignored.
+  ctx.textRendering = "OPtimizeSpeed";
   _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
-  ctx.textRendering = "OPtimizeSpeed";
-  _assertSame(ctx.textRendering, "optimizeSpeed", "ctx.textRendering", "\"optimizeSpeed\"");
-
   ctx.textRendering = "OPtimizELEgibility";
-  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
 
   ctx.textRendering = "GeometricPrecision";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizespeed";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizelegibility";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "geometricprecision";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
+  ctx.textRendering = "optimizeLegibility";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "AUTO";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "Auto";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
 
   // Setting textRendering with non-existing font variant.
   ctx.textRendering = "abcd";
-  _assertSame(ctx.textRendering, "geometricPrecision", "ctx.textRendering", "\"geometricPrecision\"");
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "normal";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "";
+  _assertSame(ctx.textRendering, "optimizeLegibility", "ctx.textRendering", "\"optimizeLegibility\"");
+
+  ctx.textRendering = "auto";
+  _assertSame(ctx.textRendering, "auto", "ctx.textRendering", "\"auto\"");
+
   t.done();
 });
 done();
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.baselines.html b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.baselines.html
index e58f9be455b..09fd0f40822 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.baselines.html
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.baselines.html
@@ -25,16 +25,16 @@ t.step(function() {
   f.load();
   fonts.add(f);
   fonts.ready.then(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");
+      ctx.font = '50px CanvasTest';
+      ctx.direction = 'ltr';
+      ctx.align = 'left'
+      _assertSame(Math.abs(ctx.measureText('A').alphabeticBaseline), 0, "Math.abs(ctx.measureText('A').alphabeticBaseline)", "0");
+      _assertSame(ctx.measureText('A').ideographicBaseline, 6.25, "ctx.measureText('A').ideographicBaseline", "6.25");
+      _assertSame(ctx.measureText('A').hangingBaseline, 25, "ctx.measureText('A').hangingBaseline", "25");
 
-     _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");
+      _assertSame(Math.abs(ctx.measureText('ABCD').alphabeticBaseline), 0, "Math.abs(ctx.measureText('ABCD').alphabeticBaseline)", "0");
+      _assertSame(ctx.measureText('ABCD').ideographicBaseline, 6.25, "ctx.measureText('ABCD').ideographicBaseline", "6.25");
+      _assertSame(ctx.measureText('ABCD').hangingBaseline, 25, "ctx.measureText('ABCD').hangingBaseline", "25");
   }).then(t_pass, t_fail);
 
 });
diff --git a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker.js b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker.js
index 6f157f4e653..c6288a569da 100644
--- a/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker.js
+++ b/tests/wpt/tests/html/canvas/offscreen/text/2d.text.measure.baselines.worker.js
@@ -21,16 +21,16 @@ t.step(function() {
   f.load();
   fonts.add(f);
   fonts.ready.then(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");
+      ctx.font = '50px CanvasTest';
+      ctx.direction = 'ltr';
+      ctx.align = 'left'
+      _assertSame(Math.abs(ctx.measureText('A').alphabeticBaseline), 0, "Math.abs(ctx.measureText('A').alphabeticBaseline)", "0");
+      _assertSame(ctx.measureText('A').ideographicBaseline, 6.25, "ctx.measureText('A').ideographicBaseline", "6.25");
+      _assertSame(ctx.measureText('A').hangingBaseline, 25, "ctx.measureText('A').hangingBaseline", "25");
 
-     _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");
+      _assertSame(Math.abs(ctx.measureText('ABCD').alphabeticBaseline), 0, "Math.abs(ctx.measureText('ABCD').alphabeticBaseline)", "0");
+      _assertSame(ctx.measureText('ABCD').ideographicBaseline, 6.25, "ctx.measureText('ABCD').ideographicBaseline", "6.25");
+      _assertSame(ctx.measureText('ABCD').hangingBaseline, 25, "ctx.measureText('ABCD').hangingBaseline", "25");
   }).then(t_pass, t_fail);
 });
 done();
diff --git a/tests/wpt/tests/html/canvas/tools/yaml/element/drawing-text-to-the-canvas.yaml b/tests/wpt/tests/html/canvas/tools/yaml/element/drawing-text-to-the-canvas.yaml
index 7c3df028ac7..5d050477af1 100644
--- a/tests/wpt/tests/html/canvas/tools/yaml/element/drawing-text-to-the-canvas.yaml
+++ b/tests/wpt/tests/html/canvas/tools/yaml/element/drawing-text-to-the-canvas.yaml
@@ -655,17 +655,17 @@
     var f = new FontFace("CanvasTest", "/fonts/CanvasTest.ttf");
     document.fonts.add(f);
     document.fonts.ready.then(() => {
-         step_timeout(t.step_func_done(function () {
+        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('A').alphabeticBaseline) === 0;
+            @assert ctx.measureText('A').ideographicBaseline === 6.25;
+            @assert ctx.measureText('A').hangingBaseline === 25;
 
-            @assert Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic) === 0;
-            @assert ctx.measureText('ABCD').getBaselines().ideographic === -39;
-            @assert ctx.measureText('ABCD').getBaselines().hanging === 68;
+            @assert Math.abs(ctx.measureText('ABCD').alphabeticBaseline) === 0;
+            @assert ctx.measureText('ABCD').ideographicBaseline === 6.25;
+            @assert ctx.measureText('ABCD').hangingBaseline === 25;
         }), 500);
     });
 
@@ -958,36 +958,120 @@
 - name: 2d.text.drawing.style.textRendering.settings
   desc: Testing basic functionalities of textRendering in Canvas
   code: |
-    // Setting textRendering with lower cases
+    // Setting textRendering with correct case.
     @assert ctx.textRendering === "auto";
 
+    ctx.textRendering = "optimizeSpeed";
+    @assert ctx.textRendering === "optimizeSpeed";
+
+    ctx.textRendering = "optimizeLegibility";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "geometricPrecision";
+    @assert ctx.textRendering === "geometricPrecision";
+
     ctx.textRendering = "auto";
     @assert ctx.textRendering === "auto";
 
-    ctx.textRendering = "optimizespeed";
-    @assert ctx.textRendering === "optimizeSpeed";
-
-    ctx.textRendering = "optimizelegibility";
-    @assert ctx.textRendering === "optimizeLegibility";
-
-    ctx.textRendering = "geometricprecision";
-    @assert ctx.textRendering === "geometricPrecision";
-
-    // Setting textRendering with lower cases and upper cases word.
-    ctx.textRendering = "aUto";
+    // Setting textRendering with incorrect case is ignored.
+    ctx.textRendering = "OPtimizeSpeed";
     @assert ctx.textRendering === "auto";
 
-    ctx.textRendering = "OPtimizeSpeed";
-    @assert ctx.textRendering === "optimizeSpeed";
-
     ctx.textRendering = "OPtimizELEgibility";
-    @assert ctx.textRendering === "optimizeLegibility";
+    @assert ctx.textRendering === "auto";
 
     ctx.textRendering = "GeometricPrecision";
-    @assert ctx.textRendering === "geometricPrecision";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "optimizespeed";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "optimizelegibility";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "geometricprecision";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "optimizeLegibility";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "AUTO";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "Auto";
+    @assert ctx.textRendering === "optimizeLegibility";
 
     // Setting textRendering with non-existing font variant.
     ctx.textRendering = "abcd";
-    @assert ctx.textRendering === "geometricPrecision";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "normal";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "auto";
+    @assert ctx.textRendering === "auto";
+
+- name: 2d.text.drawing.style.fontStretch.settings
+  desc: Testing value setting of fontStretch in Canvas
+  code: |
+    // Setting textRendering with lower cases
+    ctx.fontStretch = "ultra-condensed";
+    @assert ctx.fontStretch === "ultra-condensed";
+
+    ctx.fontStretch = "extra-condensed";
+    @assert ctx.fontStretch === "extra-condensed";
+
+    ctx.fontStretch = "condensed";
+    @assert ctx.fontStretch === "condensed";
+
+    ctx.fontStretch = "semi-condensed";
+    @assert ctx.fontStretch === "semi-condensed";
+
+    ctx.fontStretch = "normal";
+    @assert ctx.fontStretch === "normal";
+
+    ctx.fontStretch = "semi-expanded";
+    @assert ctx.fontStretch === "semi-expanded";
+
+    ctx.fontStretch = "expanded";
+    @assert ctx.fontStretch === "expanded";
+
+    ctx.fontStretch = "extra-expanded";
+    @assert ctx.fontStretch === "extra-expanded";
+
+    ctx.fontStretch = "ultra-expanded";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    // Setting fontStretch with lower cases and upper cases word,
+    // these values should be ignored.
+    ctx.fontStretch = "ulTra-condensed";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "Extra-condensed";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "cOndensed";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "Semi-Condensed";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "normaL";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "semi-Expanded";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "Expanded";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "eXtra-expanded";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "abcd";
+    @assert ctx.fontStretch === "ultra-expanded";
 
 # TODO: shadows, alpha, composite, clip
diff --git a/tests/wpt/tests/html/canvas/tools/yaml/element/text-styles.yaml b/tests/wpt/tests/html/canvas/tools/yaml/element/text-styles.yaml
index 76149894b6c..ee319c4fef1 100644
--- a/tests/wpt/tests/html/canvas/tools/yaml/element/text-styles.yaml
+++ b/tests/wpt/tests/html/canvas/tools/yaml/element/text-styles.yaml
@@ -301,7 +301,7 @@
         ctx.fillRect(0, 0, 100, 50);
         ctx.fillStyle = '#0f0';
         ctx.textBaseline = 'ideographic';
-        ctx.fillText('CC', 0, 81.25);
+        ctx.fillText('CC', 0, 31.25);
         @assert pixel 5,5 ==~ 0,255,0,255;
         @assert pixel 95,5 ==~ 0,255,0,255;
         @assert pixel 25,25 ==~ 0,255,0,255;
@@ -322,7 +322,7 @@
         ctx.fillRect(0, 0, 100, 50);
         ctx.fillStyle = '#0f0';
         ctx.textBaseline = 'hanging';
-        ctx.fillText('CC', 0, -30);
+        ctx.fillText('CC', 0, 12.5);
         @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo
         @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo
         @assert pixel 25,25 ==~ 0,255,0,255;
diff --git a/tests/wpt/tests/html/canvas/tools/yaml/offscreen/text.yaml b/tests/wpt/tests/html/canvas/tools/yaml/offscreen/text.yaml
index 80818bc29cf..b66ae4f8206 100644
--- a/tests/wpt/tests/html/canvas/tools/yaml/offscreen/text.yaml
+++ b/tests/wpt/tests/html/canvas/tools/yaml/offscreen/text.yaml
@@ -620,7 +620,7 @@
         ctx.fillRect(0, 0, 100, 50);
         ctx.fillStyle = '#0f0';
         ctx.textBaseline = 'ideographic';
-        ctx.fillText('CC', 0, 81.25);
+        ctx.fillText('CC', 0, 31.25);
         @assert pixel 5,5 ==~ 0,255,0,255;
         @assert pixel 95,5 ==~ 0,255,0,255;
         @assert pixel 25,25 ==~ 0,255,0,255;
@@ -644,7 +644,7 @@
         ctx.fillRect(0, 0, 100, 50);
         ctx.fillStyle = '#0f0';
         ctx.textBaseline = 'hanging';
-        ctx.fillText('CC', 0, -30);
+        ctx.fillText('CC', 0, 12.5);
         @assert pixel 5,5 ==~ 0,255,0,255; @moz-todo
         @assert pixel 95,5 ==~ 0,255,0,255; @moz-todo
         @assert pixel 25,25 ==~ 0,255,0,255;
@@ -1125,16 +1125,16 @@
     f.load();
     fonts.add(f);
     fonts.ready.then(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;
+        ctx.font = '50px CanvasTest';
+        ctx.direction = 'ltr';
+        ctx.align = 'left'
+        @assert Math.abs(ctx.measureText('A').alphabeticBaseline) === 0;
+        @assert ctx.measureText('A').ideographicBaseline === 6.25;
+        @assert ctx.measureText('A').hangingBaseline === 25;
 
-       @assert Math.abs(ctx.measureText('ABCD').getBaselines().alphabetic) === 0;
-       @assert ctx.measureText('ABCD').getBaselines().ideographic === -39;
-       @assert ctx.measureText('ABCD').getBaselines().hanging === 68;
+        @assert Math.abs(ctx.measureText('ABCD').alphabeticBaseline) === 0;
+        @assert ctx.measureText('ABCD').ideographicBaseline === 6.25;
+        @assert ctx.measureText('ABCD').hangingBaseline === 25;
     }).then(t_pass, t_fail);
 
 - name: 2d.text.drawing.style.absolute.spacing
@@ -1496,37 +1496,123 @@
 - name: 2d.text.drawing.style.textRendering.settings
   desc: Testing basic functionalities of textRendering in Canvas
   code: |
-    // Setting textRendering with lower cases
+    // Setting textRendering with correct case.
     @assert ctx.textRendering === "auto";
 
+    ctx.textRendering = "optimizeSpeed";
+    @assert ctx.textRendering === "optimizeSpeed";
+
+    ctx.textRendering = "optimizeLegibility";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "geometricPrecision";
+    @assert ctx.textRendering === "geometricPrecision";
+
     ctx.textRendering = "auto";
     @assert ctx.textRendering === "auto";
 
-    ctx.textRendering = "optimizespeed";
-    @assert ctx.textRendering === "optimizeSpeed";
-
-    ctx.textRendering = "optimizelegibility";
-    @assert ctx.textRendering === "optimizeLegibility";
-
-    ctx.textRendering = "geometricprecision";
-    @assert ctx.textRendering === "geometricPrecision";
-
-    // Setting textRendering with lower cases and upper cases word.
-    ctx.textRendering = "aUto";
+    // Setting textRendering with incorrect case is ignored.
+    ctx.textRendering = "OPtimizeSpeed";
     @assert ctx.textRendering === "auto";
 
-    ctx.textRendering = "OPtimizeSpeed";
-    @assert ctx.textRendering === "optimizeSpeed";
-
     ctx.textRendering = "OPtimizELEgibility";
-    @assert ctx.textRendering === "optimizeLegibility";
+    @assert ctx.textRendering === "auto";
 
     ctx.textRendering = "GeometricPrecision";
-    @assert ctx.textRendering === "geometricPrecision";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "optimizespeed";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "optimizelegibility";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "geometricprecision";
+    @assert ctx.textRendering === "auto";
+
+    ctx.textRendering = "optimizeLegibility";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "AUTO";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "Auto";
+    @assert ctx.textRendering === "optimizeLegibility";
 
     // Setting textRendering with non-existing font variant.
     ctx.textRendering = "abcd";
-    @assert ctx.textRendering === "geometricPrecision";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "normal";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "";
+    @assert ctx.textRendering === "optimizeLegibility";
+
+    ctx.textRendering = "auto";
+    @assert ctx.textRendering === "auto";
+
+    t.done();
+
+- name: 2d.text.drawing.style.fontStretch.settings
+  desc: Testing value setting of fontStretch in Canvas
+  code: |
+    // Setting textRendering with lower cases
+    ctx.fontStretch = "ultra-condensed";
+    @assert ctx.fontStretch === "ultra-condensed";
+
+    ctx.fontStretch = "extra-condensed";
+    @assert ctx.fontStretch === "extra-condensed";
+
+    ctx.fontStretch = "condensed";
+    @assert ctx.fontStretch === "condensed";
+
+    ctx.fontStretch = "semi-condensed";
+    @assert ctx.fontStretch === "semi-condensed";
+
+    ctx.fontStretch = "normal";
+    @assert ctx.fontStretch === "normal";
+
+    ctx.fontStretch = "semi-expanded";
+    @assert ctx.fontStretch === "semi-expanded";
+
+    ctx.fontStretch = "expanded";
+    @assert ctx.fontStretch === "expanded";
+
+    ctx.fontStretch = "extra-expanded";
+    @assert ctx.fontStretch === "extra-expanded";
+
+    ctx.fontStretch = "ultra-expanded";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    // Setting fontStretch with lower cases and upper cases word,
+    // these values should be ignored.
+    ctx.fontStretch = "ulTra-condensed";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "Extra-condensed";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "cOndensed";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "Semi-Condensed";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "normaL";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "semi-Expanded";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "Expanded";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "eXtra-expanded";
+    @assert ctx.fontStretch === "ultra-expanded";
+
+    ctx.fontStretch = "abcd";
+    @assert ctx.fontStretch === "ultra-expanded";
     t.done();
 
 - name: 2d.text.drawing.style.measure.rtl.text
diff --git a/tests/wpt/tests/html/semantics/popovers/popover-focus-2.html b/tests/wpt/tests/html/semantics/popovers/popover-focus-2.html
index be6923e604a..2fa1b7a23de 100644
--- a/tests/wpt/tests/html/semantics/popovers/popover-focus-2.html
+++ b/tests/wpt/tests/html/semantics/popovers/popover-focus-2.html
@@ -96,7 +96,7 @@ promise_test(async t => {
   <button id=circular2 popovertarget=popover4 popovertargetaction=show tabindex="0"></button>
   <button id=circular3 popovertarget=popover4 tabindex="0"></button>
 </div>
-<button id=circular4>after</button>
+<button id=circular4 tabindex="0">after</button>
 <script>
 promise_test(async t => {
   circular0.focus();
diff --git a/tests/wpt/tests/html/semantics/selectors/pseudo-classes/disabled.html b/tests/wpt/tests/html/semantics/selectors/pseudo-classes/disabled.html
index 8808675eb69..142a12dd122 100644
--- a/tests/wpt/tests/html/semantics/selectors/pseudo-classes/disabled.html
+++ b/tests/wpt/tests/html/semantics/selectors/pseudo-classes/disabled.html
@@ -57,4 +57,24 @@
   var input = document.createElement("input");
   input.setAttribute("disabled", "disabled");
   testSelectorIdsMatch(":disabled", ["button1", "input2", "select2", "optgroup2", "option2", "textarea2", "fieldset2", "clubname", "clubnum"], "':disabled' should not match elements not in the document");
+
+  var fieldset = document.createElement("fieldset");
+  fieldset.id = "fieldset_nested";
+  fieldset.innerHTML = `
+    <input id=input_nested>
+    <button id=button_nested>button nested</button>
+    <select id=select_nested>
+      <optgroup label="options" id=optgroup_nested>
+        <option value="options" id=option_nested>option nested</option>
+      </optgroup>
+    </select>
+    <textarea id=textarea_nested>textarea nested</textarea>
+    <object id=object_nested></object>
+    <output id=output_nested></output>
+    <fieldset id=fieldset_nested2>
+      <input id=input_nested2>
+    </fieldset>
+  `;
+  document.getElementById("fieldset2").appendChild(fieldset);
+  testSelectorIdsMatch("#fieldset2 :disabled", ["clubname", "clubnum", "fieldset_nested", "input_nested", "button_nested", "select_nested", "textarea_nested", "fieldset_nested2", "input_nested2"], "':disabled' should match elements that are appended to a disabled fieldset dynamically");
 </script>
diff --git a/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/actions/penPointerEventProperties.html.ini b/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/actions/penPointerEventProperties.html.ini
index d808b1793cf..f3a973c0f50 100644
--- a/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/actions/penPointerEventProperties.html.ini
+++ b/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/actions/penPointerEventProperties.html.ini
@@ -1,6 +1,4 @@
 [penPointerEventProperties.html]
-  expected:
-    if product == "firefox": ERROR
   [TestDriver actions: pointerevent properties of pen type]
     expected:
       if product == "safari" or product == "firefox": FAIL
diff --git a/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/actions/penPointerEvents.html.ini b/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/actions/penPointerEvents.html.ini
index 39e05a8f090..d66b8470ea4 100644
--- a/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/actions/penPointerEvents.html.ini
+++ b/tests/wpt/tests/infrastructure/metadata/infrastructure/testdriver/actions/penPointerEvents.html.ini
@@ -1,6 +1,4 @@
 [penPointerEvents.html]
-  expected:
-    if product == "firefox": ERROR
   [TestDriver actions: pointerevent properties of pen type]
     expected:
-      if product == "safari": FAIL
+      if product == "safari" or product == "firefox": FAIL
diff --git a/tests/wpt/tests/infrastructure/testdriver/actions/penPointerEventProperties.html b/tests/wpt/tests/infrastructure/testdriver/actions/penPointerEventProperties.html
index ba6c15f0225..05f85d299e9 100644
--- a/tests/wpt/tests/infrastructure/testdriver/actions/penPointerEventProperties.html
+++ b/tests/wpt/tests/infrastructure/testdriver/actions/penPointerEventProperties.html
@@ -27,7 +27,7 @@ let pointerDownEvent;
 let pointerMoveEvent;
 let receivedPointerDown = false;
 
-async_test(t => {
+promise_test(async t => {
   let test = document.getElementById("test");
   var eventList = ['pointermove', 'pointerdown'];
   for (eventType of eventList) {
@@ -42,30 +42,29 @@ async_test(t => {
   }
 
   let div = document.getElementById("test");
-  let actions = new test_driver.Actions()
+  await new test_driver.Actions()
     .addPointer("penPointer1", "pen")
     .pointerMove(0, 0, {origin: test})
     .pointerDown({pressure:0.36, tiltX:-72, tiltY:9, twist:86})
     .pointerMove(15, 0, {origin: test})
     .pointerUp()
-    .send()
-    .then(t.step_func_done(() => {
-      assert_equals(pointerDownEvent.type, "pointerdown");
-      assert_equals(pointerDownEvent.pointerType, "pen");
-      assert_equals(pointerDownEvent.width, 1);
-      assert_equals(pointerDownEvent.height, 1);
-      assert_equals(Math.round(pointerDownEvent.pressure * 100) / 100, 0.36);
-      assert_equals(pointerDownEvent.tiltX, -72);
-      assert_equals(pointerDownEvent.tiltY, 9);
-      assert_equals(pointerDownEvent.twist, 86);
-      assert_equals(pointerMoveEvent.type, "pointermove");
-      assert_equals(pointerMoveEvent.pointerType, "pen");
-      assert_equals(pointerMoveEvent.width, 1);
-      assert_equals(pointerMoveEvent.height, 1);
-      assert_equals(Math.round(pointerMoveEvent.pressure * 100) / 100, 0.5);
-      assert_equals(pointerMoveEvent.tiltX, 0);
-      assert_equals(pointerMoveEvent.tiltY, 0);
-      assert_equals(pointerMoveEvent.twist, 0);
-  })).catch(e => t.step_func(() => assert_unreached("Actions sequence failed " + e)));
+    .send();
+
+    assert_equals(pointerDownEvent.type, "pointerdown");
+    assert_equals(pointerDownEvent.pointerType, "pen");
+    assert_equals(pointerDownEvent.width, 1);
+    assert_equals(pointerDownEvent.height, 1);
+    assert_equals(Math.round(pointerDownEvent.pressure * 100) / 100, 0.36);
+    assert_equals(pointerDownEvent.tiltX, -72);
+    assert_equals(pointerDownEvent.tiltY, 9);
+    assert_equals(pointerDownEvent.twist, 86);
+    assert_equals(pointerMoveEvent.type, "pointermove");
+    assert_equals(pointerMoveEvent.pointerType, "pen");
+    assert_equals(pointerMoveEvent.width, 1);
+    assert_equals(pointerMoveEvent.height, 1);
+    assert_equals(Math.round(pointerMoveEvent.pressure * 100) / 100, 0.5);
+    assert_equals(pointerMoveEvent.tiltX, 0);
+    assert_equals(pointerMoveEvent.tiltY, 0);
+    assert_equals(pointerMoveEvent.twist, 0);
 });
 </script>
diff --git a/tests/wpt/tests/infrastructure/testdriver/actions/penPointerEvents.html b/tests/wpt/tests/infrastructure/testdriver/actions/penPointerEvents.html
index 7141fb56556..f885ad501a2 100644
--- a/tests/wpt/tests/infrastructure/testdriver/actions/penPointerEvents.html
+++ b/tests/wpt/tests/infrastructure/testdriver/actions/penPointerEvents.html
@@ -26,7 +26,7 @@ div#test {
 <script>
 let eventList = [];
 
-async_test(t => {
+promise_test(async t => {
   let test = document.getElementById("test");
   [
     'pointerover', 'pointerenter', 'pointermove', 'pointerdown', 'pointerup',
@@ -56,104 +56,103 @@ async_test(t => {
     .pointerDown()
     .pointerMove(30, 0, {origin: test})
     .pointerUp()
-    .pointerMove(0, 0)
-    .send()
-    .then(t.step_func_done(() => {
-      const expectedEvents = [
-        {
-          type: 'pointerover',
-          button:  ButtonChange.NONE,
-          buttons: ButtonsBitfield.NONE
-        },
-        {
-          type: 'pointerenter',
-          button:  ButtonChange.NONE,
-          buttons: ButtonsBitfield.NONE
-        },
-        { type: 'pointermove',
-          button:  ButtonChange.NONE,
-          buttons: ButtonsBitfield.NONE,
-          clientX: 10,
-          clientY: 10
-        },
-        {
-          type: 'pointerdown',
-          button:  ButtonChange.PEN_CONTACT,
-          buttons: ButtonsBitfield.PEN_CONTACT,
-          clientX: 10,
-          clientY: 10
-        },
-        {
-          type: 'pointermove',
-          button:  ButtonChange.NONE,
-          buttons: ButtonsBitfield.PEN_CONTACT,
-          clientX: 55,
-          clientY: 55
-        },
-        {
-          type: 'pointerup',
-          button:  ButtonChange.PEN_CONTACT,
-          buttons: ButtonsBitfield.NONE,
-          clientX: 55,
-          clientY: 55
-        },
-        {
-          type: 'pointermove',
-          button:  ButtonChange.NONE,
-          buttons: ButtonsBitfield.NONE,
-          clientX: 70,
-          clientY: 55
-        },
-        {
-          type: 'pointerdown',
-          button:  ButtonChange.PEN_CONTACT,
-          buttons: ButtonsBitfield.PEN_CONTACT,
-          clientX: 70,
-          clientY: 55
-        },
-        {
-          type: 'pointermove',
-          button:  ButtonChange.NONE,
-          buttons: ButtonsBitfield.PEN_CONTACT,
-          clientX: 85,
-          clientY: 55
-        },
-        {
-          type: 'pointerup',
-          button:  ButtonChange.PEN_CONTACT,
-          buttons: ButtonsBitfield.NONE,
-          clientX: 85,
-          clientY: 55
-        },
-        {
-          type: 'pointerout',
-          button:  ButtonChange.NONE,
-          buttons: ButtonsBitfield.NONE,
-          clientX: 0,
-          clientY: 0
-        },
-        {
-          type: 'pointerleave',
-          button:  ButtonChange.NONE,
-          buttons: ButtonsBitfield.NONE,
-          clientX: 0,
-          clientY: 0
-        },
-      ];
+    .pointerMove(0, 0);
+    await actions.send()
 
-      for (let i = 0; i < expectedEvents.length; i++) {
-        const expectedValue = expectedEvents[i];
-        const actualValue = eventList[i];
-        assert_true(!!actualValue, `Missing $[i}-th event`);
-        assert_equals(actualValue.pointerType, 'pen', 'Unexpected pointer type');
-        for (key in expectedValue) {
-          assert_equals(actualValue[key], expectedValue[key],
-                        `Mismatch in event[${i}].${key}`);
-        }
+    const expectedEvents = [
+      {
+        type: 'pointerover',
+        button:  ButtonChange.NONE,
+        buttons: ButtonsBitfield.NONE
+      },
+      {
+        type: 'pointerenter',
+        button:  ButtonChange.NONE,
+        buttons: ButtonsBitfield.NONE
+      },
+      { type: 'pointermove',
+        button:  ButtonChange.NONE,
+        buttons: ButtonsBitfield.NONE,
+        clientX: 10,
+        clientY: 10
+      },
+      {
+        type: 'pointerdown',
+        button:  ButtonChange.PEN_CONTACT,
+        buttons: ButtonsBitfield.PEN_CONTACT,
+        clientX: 10,
+        clientY: 10
+      },
+      {
+        type: 'pointermove',
+        button:  ButtonChange.NONE,
+        buttons: ButtonsBitfield.PEN_CONTACT,
+        clientX: 55,
+        clientY: 55
+      },
+      {
+        type: 'pointerup',
+        button:  ButtonChange.PEN_CONTACT,
+        buttons: ButtonsBitfield.NONE,
+        clientX: 55,
+        clientY: 55
+      },
+      {
+        type: 'pointermove',
+        button:  ButtonChange.NONE,
+        buttons: ButtonsBitfield.NONE,
+        clientX: 70,
+        clientY: 55
+      },
+      {
+        type: 'pointerdown',
+        button:  ButtonChange.PEN_CONTACT,
+        buttons: ButtonsBitfield.PEN_CONTACT,
+        clientX: 70,
+        clientY: 55
+      },
+      {
+        type: 'pointermove',
+        button:  ButtonChange.NONE,
+        buttons: ButtonsBitfield.PEN_CONTACT,
+        clientX: 85,
+        clientY: 55
+      },
+      {
+        type: 'pointerup',
+        button:  ButtonChange.PEN_CONTACT,
+        buttons: ButtonsBitfield.NONE,
+        clientX: 85,
+        clientY: 55
+      },
+      {
+        type: 'pointerout',
+        button:  ButtonChange.NONE,
+        buttons: ButtonsBitfield.NONE,
+        clientX: 0,
+        clientY: 0
+      },
+      {
+        type: 'pointerleave',
+        button:  ButtonChange.NONE,
+        buttons: ButtonsBitfield.NONE,
+        clientX: 0,
+        clientY: 0
+      },
+    ];
+
+    for (let i = 0; i < expectedEvents.length; i++) {
+      const expectedValue = expectedEvents[i];
+      const actualValue = eventList[i];
+      assert_true(!!actualValue, `Missing $[i}-th event`);
+      assert_equals(actualValue.pointerType, 'pen', 'Unexpected pointer type');
+      for (key in expectedValue) {
+        assert_equals(actualValue[key], expectedValue[key],
+                      `Mismatch in event[${i}].${key}`);
       }
+    }
 
-      assert_equals(eventList.length, expectedEvents.length,
-                    'Unexpected number of events');
-  })).catch(e => t.step_func(() => assert_unreached("Actions sequence failed " + e)));
+    assert_equals(eventList.length, expectedEvents.length,
+                  'Unexpected number of events');
 });
 </script>
diff --git a/tests/wpt/tests/interfaces/screen-capture-mouse-events.tentative.idl b/tests/wpt/tests/interfaces/screen-capture-mouse-events.tentative.idl
new file mode 100644
index 00000000000..7b081cd9fd8
--- /dev/null
+++ b/tests/wpt/tests/interfaces/screen-capture-mouse-events.tentative.idl
@@ -0,0 +1,25 @@
+// https://screen-share.github.io/mouse-events/
+
+enum CaptureStartFocusBehavior {
+  "focus-captured-surface",
+  "no-focus-change"
+};
+
+[Exposed=Window, SecureContext]
+interface CaptureController : EventTarget {
+  constructor();
+  undefined setFocusBehavior(CaptureStartFocusBehavior focusBehavior);
+  attribute EventHandler oncapturedmousechange;
+};
+
+[Exposed=Window]
+interface CapturedMouseEvent : Event {
+  constructor(DOMString type, optional CapturedMouseEventInit eventInitDict = {});
+  readonly attribute long surfaceX;
+  readonly attribute long surfaceY;
+};
+
+dictionary CapturedMouseEventInit : EventInit {
+  long surfaceX = -1;
+  long surfaceY = -1;
+};
diff --git a/tests/wpt/tests/interfaces/screen-capture.idl b/tests/wpt/tests/interfaces/screen-capture.idl
index 9abd4d2c1ad..830b96d16fa 100644
--- a/tests/wpt/tests/interfaces/screen-capture.idl
+++ b/tests/wpt/tests/interfaces/screen-capture.idl
@@ -13,7 +13,7 @@ enum CaptureStartFocusBehavior {
 };
 
 [Exposed=Window, SecureContext]
-interface CaptureController {
+interface CaptureController : EventTarget {
   constructor();
   undefined setFocusBehavior(CaptureStartFocusBehavior focusBehavior);
 };
diff --git a/tests/wpt/tests/loading/early-hints/modulepreload-as-worker-cross-origin.h2.window.js b/tests/wpt/tests/loading/early-hints/modulepreload-as-worker-cross-origin.h2.window.js
new file mode 100644
index 00000000000..3756d7f7fa2
--- /dev/null
+++ b/tests/wpt/tests/loading/early-hints/modulepreload-as-worker-cross-origin.h2.window.js
@@ -0,0 +1,15 @@
+// META: script=/common/utils.js
+// META: script=resources/early-hints-helpers.sub.js
+
+// see modulepreload-in-early-hints.h2.window.js for params explanation
+test(() => {
+    const params = new URLSearchParams();
+    params.set("description",
+        'Modulepreload should not load with as="worker" from cross-origin url');
+    params.set("resource-url",
+        CROSS_ORIGIN_RESOURCES_URL + "/empty.js?" + token());
+    params.set("as", "worker");
+    params.set("should-preload", false);
+    const test_url = "resources/modulepreload-in-early-hints.h2.py?" + params.toString();
+    window.location.replace(new URL(test_url, window.location));
+});
diff --git a/tests/wpt/tests/loading/early-hints/modulepreload-as-worker.h2.window.js b/tests/wpt/tests/loading/early-hints/modulepreload-as-worker.h2.window.js
new file mode 100644
index 00000000000..2fd36dfbf3d
--- /dev/null
+++ b/tests/wpt/tests/loading/early-hints/modulepreload-as-worker.h2.window.js
@@ -0,0 +1,15 @@
+// META: script=/common/utils.js
+// META: script=resources/early-hints-helpers.sub.js
+
+// see modulepreload-in-early-hints.h2.window.js for params explanation
+test(() => {
+    const params = new URLSearchParams();
+    params.set("description",
+        'Modulepreload should load with as="worker" from same-origin url');
+    params.set("resource-url",
+        SAME_ORIGIN_RESOURCES_URL + "/empty.js?" + token());
+    params.set("as", "worker");
+    params.set("should-preload", true);
+    const test_url = "resources/modulepreload-in-early-hints.h2.py?" + params.toString();
+    window.location.replace(new URL(test_url, window.location));
+});
diff --git a/tests/wpt/tests/loading/early-hints/modulepreload-cross-origin.h2.window.js b/tests/wpt/tests/loading/early-hints/modulepreload-cross-origin.h2.window.js
new file mode 100644
index 00000000000..3499b4d60d0
--- /dev/null
+++ b/tests/wpt/tests/loading/early-hints/modulepreload-cross-origin.h2.window.js
@@ -0,0 +1,13 @@
+// META: script=/common/utils.js
+// META: script=resources/early-hints-helpers.sub.js
+
+// see modulepreload-in-early-hints.h2.window.js for params explanation
+test(() => {
+    const params = new URLSearchParams();
+    params.set("description", "Modulepreload works in early hints from cross-origin url");
+    params.set("resource-url",
+        CROSS_ORIGIN_RESOURCES_URL + "/empty.js?" + token());
+    params.set("should-preload", true);
+    const test_url = "resources/modulepreload-in-early-hints.h2.py?" + params.toString();
+    window.location.replace(new URL(test_url, window.location));
+});
diff --git a/tests/wpt/tests/loading/early-hints/modulepreload-in-early-hints.h2.window.js b/tests/wpt/tests/loading/early-hints/modulepreload-in-early-hints.h2.window.js
index 5627f04a0fe..bd592b0396d 100644
--- a/tests/wpt/tests/loading/early-hints/modulepreload-in-early-hints.h2.window.js
+++ b/tests/wpt/tests/loading/early-hints/modulepreload-in-early-hints.h2.window.js
@@ -1,10 +1,20 @@
 // META: script=/common/utils.js
 // META: script=resources/early-hints-helpers.sub.js
 
+// params are sent to a Python handler[1] that returns a 103 Early Hints
+// response based the values of "resource-url" and "as", and then that response
+// is validated by a window test[2] according to the value of "should-preload"
+//
+// see: https://web-platform-tests.org/writing-tests/h2tests.html
+//
+// [1]: resources/modulepreload-in-early-hints.h2.py
+// [2]: resources/modulepreload-in-early-hints.h2.html
 test(() => {
     const params = new URLSearchParams();
+    params.set("description", "Modulepreload works in early hints");
     params.set("resource-url",
         SAME_ORIGIN_RESOURCES_URL + "/empty.js?" + token());
+    params.set("should-preload", true);
     const test_url = "resources/modulepreload-in-early-hints.h2.py?" + params.toString();
     window.location.replace(new URL(test_url, window.location));
 });
diff --git a/tests/wpt/tests/loading/early-hints/resources/modulepreload-in-early-hints.h2.py b/tests/wpt/tests/loading/early-hints/resources/modulepreload-in-early-hints.h2.py
index 231b3bc69cb..cefd02a96a8 100644
--- a/tests/wpt/tests/loading/early-hints/resources/modulepreload-in-early-hints.h2.py
+++ b/tests/wpt/tests/loading/early-hints/resources/modulepreload-in-early-hints.h2.py
@@ -3,7 +3,12 @@ import os
 
 def handle_headers(frame, request, response):
     resource_url = request.GET.first(b"resource-url").decode()
-    link_header_value = "<{}>; rel=modulepreload".format(resource_url)
+    as_value = request.GET.first(b"as", None)
+    if as_value:
+        link_header_value = "<{}>; rel=modulepreload; as={}".format(
+            resource_url, as_value.decode())
+    else:
+        link_header_value = "<{}>; rel=modulepreload".format(resource_url)
     early_hints = [
         (b":status", b"103"),
         (b"link", link_header_value),
diff --git a/tests/wpt/tests/loading/early-hints/resources/modulepreload-in-early-hints.html b/tests/wpt/tests/loading/early-hints/resources/modulepreload-in-early-hints.html
index 44aebf720a0..64a02855040 100644
--- a/tests/wpt/tests/loading/early-hints/resources/modulepreload-in-early-hints.html
+++ b/tests/wpt/tests/loading/early-hints/resources/modulepreload-in-early-hints.html
@@ -16,11 +16,14 @@ async function fetchModuleScript(url) {
     });
 }
 
+const params = new URLSearchParams(window.location.search);
+const description = params.get("description");
+
 promise_test(async (t) => {
-    const params = new URLSearchParams(window.location.search);
     const resource_url = params.get("resource-url");
+    const should_preload = params.get("should-preload") === "true";
     await fetchModuleScript(resource_url);
-    assert_true(isPreloadedByEarlyHints(resource_url));
-}, "Modulepreload in an early hints.");
+    assert_equals(isPreloadedByEarlyHints(resource_url), should_preload);
+}, description);
 </script>
 </body>
diff --git a/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-fast.html b/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-fast.html
index 38fabdcdfac..79217980177 100644
--- a/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-fast.html
+++ b/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-fast.html
@@ -28,17 +28,17 @@ promise_test(function(t) {
 // when called with an empty advanced constraint set, returns a Promise that is
 // resolved.
 promise_test(function(t) {
-var canvas = document.getElementById('canvas');
-var context = canvas.getContext("2d");
-context.fillStyle = "red";
-context.fillRect(0, 0, 10, 10);
+  var canvas = document.getElementById('canvas');
+  var context = canvas.getContext("2d");
+  context.fillStyle = "red";
+  context.fillRect(0, 0, 10, 10);
 
-var stream = canvas.captureStream();
-assert_equals(stream.getAudioTracks().length, 0);
-assert_equals(stream.getVideoTracks().length, 1);
+  var stream = canvas.captureStream();
+  assert_equals(stream.getAudioTracks().length, 0);
+  assert_equals(stream.getVideoTracks().length, 1);
 
-var videoTrack = stream.getVideoTracks()[0];
-return videoTrack.applyConstraints({advanced: []});
+  var videoTrack = stream.getVideoTracks()[0];
+  return videoTrack.applyConstraints({advanced: []});
 }, 'MediaStreamTrack.applyConstraints({advanced: []})');
 
 // This test verifies that applyConstraints() rejects the returned Promise if
@@ -55,7 +55,7 @@ promise_test(async function(t) {
   // Use e.g. |torch| as an example of unsupported constraint.
   assert_false("torch" in videoTrack.getCapabilities());
   try {
-    await videoTrack.applyConstraints({advanced : [ {torch : true} ]});
+    await videoTrack.applyConstraints({torch: {exact: true}});
   } catch (error) {
     assert_equals(error.name, 'OverconstrainedError');
     assert_equals(error.constraint, 'torch');
diff --git a/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-getSettings.https.html b/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-getSettings.https.html
index c6401570b8b..e18480aae1a 100644
--- a/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-getSettings.https.html
+++ b/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-getSettings.https.html
@@ -101,20 +101,61 @@ image_capture_test(async t => {
   let stream = await navigator.mediaDevices.getUserMedia({video: true});
   let videoTrack = stream.getVideoTracks()[0];
 
-  const constraints = [{ pan: 8 }, { tilt: 9 }];
+  const constraints = [{ pan: { exact: 8 } }, { tilt: { exact: 9 } }];
   await Promise.all(constraints.map(async constraint => {
     try {
-      await videoTrack.applyConstraints({ advanced: [constraint] });
+      await videoTrack.applyConstraints(constraint);
     } catch (error) {
       assert_equals(error.name, 'OverconstrainedError');
       assert_equals(error.constraint, Object.keys(constraint)[0]);
       return;
     }
     assert_unreached(
-        "applyConstraints should throw a NotSupportedError for " +
+        "applyConstraints should throw an OverconstrainedError for " +
         JSON.stringify(constraint));
   }));
 
-}, 'exercises an applyConstraints() with PTZ permission denied');
+}, 'exercises an applyConstraints() with required constraints with PTZ permission denied');
+
+image_capture_test(async t => {
+  await test_driver.set_permission({name: 'camera', panTiltZoom: true},
+      'denied');
+
+  let stream = await navigator.mediaDevices.getUserMedia({video: true});
+  let videoTrack = stream.getVideoTracks()[0];
+
+  const constraints = [{ pan: { ideal: 8 } }, { tilt: { ideal: 9 } }];
+  await Promise.all(constraints.map(async constraint => {
+    try {
+      await videoTrack.applyConstraints(constraint);
+    } catch (error) {
+      assert_unreached(
+          `applyConstraints should not throw an ${error.name} for ` +
+          JSON.stringify(constraint));
+    }
+  }));
+
+}, 'exercises an applyConstraints() with ideal constraints with PTZ permission denied');
+
+image_capture_test(async t => {
+  await test_driver.set_permission({name: 'camera', panTiltZoom: true},
+      'denied');
+
+  let stream = await navigator.mediaDevices.getUserMedia({video: true});
+  let videoTrack = stream.getVideoTracks()[0];
+
+  const advanced_constraints = [{ pan: 8 }, { tilt: 9 }];
+  await Promise.all(advanced_constraints.map(async advanced_constraint => {
+    const constraint = { advanced: [advanced_constraint] };
+    try {
+      await videoTrack.applyConstraints(constraint);
+    } catch (error) {
+      assert_unreached(
+          `applyConstraints should not throw an ${error.name} for ` +
+          JSON.stringify(constraint));
+    }
+  }));
+
+}, 'exercises an applyConstraints() with advances constraints with PTZ permission denied');
 
 </script>
diff --git a/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-reject.https.html b/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-reject.https.html
index 5050ed27dd8..0bb4c9f74eb 100644
--- a/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-reject.https.html
+++ b/tests/wpt/tests/mediacapture-image/MediaStreamTrack-applyConstraints-reject.https.html
@@ -20,8 +20,7 @@ var makePromiseTest = function(getConstraint) {
 
     const constraint = getConstraint(imageCaptureTest.mockImageCapture().state());
     try {
-      const constraints = { advanced : [constraint] };
-      await videoTrack.applyConstraints(constraints);
+      await videoTrack.applyConstraints(constraint);
       assert_unreached('expected applyConstraints to reject');
     } catch (error) {
       assert_equals(error.name, 'OverconstrainedError');
@@ -31,38 +30,38 @@ var makePromiseTest = function(getConstraint) {
 };
 
 const constraintGenerators = [
-  capabilities => ({ whiteBalanceMode: 'manual' }),
-  capabilities => ({ exposureMode: 'none' }),
-  capabilities => ({ focusMode: 'continuous' }),
+  capabilities => ({ whiteBalanceMode: { exact: 'manual' } }),
+  capabilities => ({ exposureMode: { exact: 'none' } }),
+  capabilities => ({ focusMode: { exact: 'continuous' } }),
   capabilities => ({
-    exposureCompensation: capabilities.exposureCompensation.max + 1
+    exposureCompensation: { exact: capabilities.exposureCompensation.max + 1 }
   }),
   capabilities => ({
-    exposureCompensation: capabilities.exposureCompensation.min - 1
+    exposureCompensation: { exact: capabilities.exposureCompensation.min - 1 }
   }),
   capabilities => ({
-    colorTemperature: capabilities.colorTemperature.max + 1
+    colorTemperature: { exact: capabilities.colorTemperature.max + 1 }
   }),
   capabilities => ({
-    colorTemperature: capabilities.colorTemperature.min - 1
+    colorTemperature: { exact: capabilities.colorTemperature.min - 1 }
   }),
-  capabilities => ({ iso: capabilities.iso.max + 1 }),
-  capabilities => ({ iso: capabilities.iso.min - 1 }),
-  capabilities => ({ brightness: capabilities.brightness.max + 1 }),
-  capabilities => ({ brightness: capabilities.brightness.min - 1 }),
-  capabilities => ({ contrast: capabilities.contrast.max + 1 }),
-  capabilities => ({ contrast: capabilities.contrast.min - 1 }),
-  capabilities => ({ saturation: capabilities.saturation.max + 1 }),
-  capabilities => ({ saturation: capabilities.saturation.min - 1 }),
-  capabilities => ({ sharpness: capabilities.sharpness.max + 1 }),
-  capabilities => ({ sharpness: capabilities.sharpness.min - 1 }),
-  capabilities => ({ pan: capabilities.pan.max + 1 }),
-  capabilities => ({ pan: capabilities.pan.min - 1 }),
-  capabilities => ({ tilt: capabilities.tilt.max + 1 }),
-  capabilities => ({ tilt: capabilities.tilt.min - 1 }),
-  capabilities => ({ zoom: capabilities.zoom.max + 1 }),
-  capabilities => ({ zoom: capabilities.zoom.min - 1 }),
-  capabilities => ({ torch: true }),
+  capabilities => ({ iso: { exact: capabilities.iso.max + 1 } }),
+  capabilities => ({ iso: { exact: capabilities.iso.min - 1 } }),
+  capabilities => ({ brightness: { exact: capabilities.brightness.max + 1 } }),
+  capabilities => ({ brightness: { exact: capabilities.brightness.min - 1 } }),
+  capabilities => ({ contrast: { exact: capabilities.contrast.max + 1 } }),
+  capabilities => ({ contrast: { exact: capabilities.contrast.min - 1 } }),
+  capabilities => ({ saturation: { exact: capabilities.saturation.max + 1 } }),
+  capabilities => ({ saturation: { exact: capabilities.saturation.min - 1 } }),
+  capabilities => ({ sharpness: { exact: capabilities.sharpness.max + 1 } }),
+  capabilities => ({ sharpness: { exact: capabilities.sharpness.min - 1 } }),
+  capabilities => ({ pan: { exact: capabilities.pan.max + 1 } }),
+  capabilities => ({ pan: { exact: capabilities.pan.min - 1 } }),
+  capabilities => ({ tilt: { exact: capabilities.tilt.max + 1 } }),
+  capabilities => ({ tilt: { exact: capabilities.tilt.min - 1 } }),
+  capabilities => ({ zoom: { exact: capabilities.zoom.max + 1 } }),
+  capabilities => ({ zoom: { exact: capabilities.zoom.min - 1 } }),
+  capabilities => ({ torch: { exact: true } }),
 ];
 
 for (key in constraintGenerators) {
diff --git a/tests/wpt/tests/mediacapture-image/MediaStreamTrack-clone.https.html b/tests/wpt/tests/mediacapture-image/MediaStreamTrack-clone.https.html
index 3ee21031eb0..8945c1d9ea0 100644
--- a/tests/wpt/tests/mediacapture-image/MediaStreamTrack-clone.https.html
+++ b/tests/wpt/tests/mediacapture-image/MediaStreamTrack-clone.https.html
@@ -37,6 +37,9 @@ image_capture_test(async (t, imageCaptureTest) => {
 
                                       torch                : true
                                     }]};
+    for (const [key, value] of Object.entries(constraints.advanced[0])) {
+      constraints[key] = {exact: value};
+    }
 
     let stream = await navigator.mediaDevices.getUserMedia({video: true});
     let originalVideoTrack = stream.getVideoTracks()[0];
@@ -51,14 +54,20 @@ image_capture_test(async (t, imageCaptureTest) => {
     assert_equals(appliedClonedConstraints.advanced.length, 1);
     const appliedClonedAdvancedConstraints = appliedClonedConstraints.advanced[0];
 
-    // Check that |appliedClonedAdvancedConstraints| and |appliedAdvancedConstraints| are equal.
+    // Check that |appliedClonedConstraints| and |appliedConstraints| are equal.
     const appliedAdvancedConstraints = appliedConstraints.advanced[0];
     assert_equals(appliedAdvancedConstraints.length, appliedClonedAdvancedConstraints.length);
-    Object.keys(appliedClonedAdvancedConstraints).forEach((key, value) => {
+    Object.keys(appliedClonedAdvancedConstraints).forEach(key => {
+      assert_not_equals(appliedClonedConstraints[key], undefined, 'key ' + key);
+      assert_not_equals(appliedConstraints[key], undefined, 'key ' + key);
+      assert_not_equals(appliedConstraints[key].exact, undefined, 'key ' + key);
       assert_not_equals(appliedAdvancedConstraints[key], undefined, 'key ' + key);
       if (key != 'pointsOfInterest') {
+        assert_equals(appliedConstraints[key].exact, appliedClonedConstraints[key].exact, key);
         assert_equals(appliedAdvancedConstraints[key], appliedClonedAdvancedConstraints[key], key);
       } else {
+        assert_point2d_array_approx_equals(appliedConstraints[key].exact,
+                                           appliedClonedConstraints[key].exact, 0.01);
         assert_point2d_array_approx_equals(appliedAdvancedConstraints[key],
                                            appliedClonedAdvancedConstraints[key], 0.01);
       }
diff --git a/tests/wpt/tests/performance-timeline/not-restored-reasons/performance-navigation-timing-redirect-on-history.tentative.window.js b/tests/wpt/tests/performance-timeline/not-restored-reasons/performance-navigation-timing-redirect-on-history.tentative.window.js
index acb70ebfae4..7191456cc84 100644
--- a/tests/wpt/tests/performance-timeline/not-restored-reasons/performance-navigation-timing-redirect-on-history.tentative.window.js
+++ b/tests/wpt/tests/performance-timeline/not-restored-reasons/performance-navigation-timing-redirect-on-history.tentative.window.js
@@ -21,15 +21,15 @@ promise_test(async t => {
   await useWebSocket(rc1);
 
   // Create a remote context with the redirected URL.
-  let [rc1_redirected, saveUrl] =
-      await rcHelper.createContextWithUrl(/*extraConfig=*/ {
+  let rc1_redirected =
+      await rcHelper.createContext(/*extraConfig=*/ {
         origin: 'HTTP_ORIGIN',
         scripts: [],
         headers: [],
       });
 
   const redirectUrl =
-      `${ORIGIN}/common/redirect.py?location=${encodeURIComponent(saveUrl)}`;
+      `${ORIGIN}/common/redirect.py?location=${encodeURIComponent(rc1_redirected.url)}`;
   // Replace the history state.
   await rc1.executeScript((url) => {
     window.history.replaceState(null, '', url);
diff --git a/tests/wpt/tests/pointerevents/pointerevent_pointerout_no_pointer_movement.html b/tests/wpt/tests/pointerevents/pointerevent_pointerout_no_pointer_movement.html
new file mode 100644
index 00000000000..856f2ce37ce
--- /dev/null
+++ b/tests/wpt/tests/pointerevents/pointerevent_pointerout_no_pointer_movement.html
@@ -0,0 +1,85 @@
+<!doctype html>
+<html>
+<head>
+<title>The pointerout event should not be fired if the pointer doesn't move</title>
+<meta name="viewport" content="width=device-width">
+<link rel="help" href="https://github.com/w3c/pointerevents/issues/457">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-actions.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
+<style>
+#target{
+  width:100px;
+  height:100px;
+  background-color:red;
+}
+
+#overlay{
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  background-color: rgba(0,0,0,0.2);
+  z-index: 1000;
+  text-align: center;
+  display:none;
+}
+</style>
+</head>
+<body>
+<h1>The pointerout event should not be fired if the pointer doesn't move</h1>
+<h4>
+  Test Description: This test checks if the pointerout event dispatched unexpectedly.
+  <ol>
+    <li>Click on the black rectangle.
+    <li>Don't move mouse after clicking.
+  </ol>
+</h4>
+<p>
+<div id="target"></div>
+<div id="overlay"></div>
+<div id="log"></div>
+<script>
+function waitForAnimationFrame() {
+  return new Promise(resolve => {
+    requestAnimationFrame(() => {
+      requestAnimationFrame(resolve);
+    });
+  });
+}
+
+promise_test(async () => {
+  const target = document.getElementById("target");
+
+  let out_event_count = 0;
+  target.addEventListener("pointerout", function() {
+    out_event_count++;
+  });
+
+  // Wait for the click event on target element and update display style on
+  // overlay element.
+  const promise = new Promise(resolve => {
+    target.addEventListener("click", async function() {
+      const overlay = document.getElementById("overlay");
+      overlay.style.display= 'block';
+      await waitForAnimationFrame();
+
+      overlay.style.display= 'none'
+      await waitForAnimationFrame();
+
+      resolve();
+    }, { once: true });
+  });
+
+  // Click target.
+  test_driver.click(target);
+  await promise;
+
+  assert_equals(out_event_count, 0, "The pointerout event should not be fired");
+}, "The pointerout event should not be fired if the pointer doesn't move");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/resources/test/tests/functional/assert-throws-dom.html b/tests/wpt/tests/resources/test/tests/functional/assert-throws-dom.html
new file mode 100644
index 00000000000..4dd66b2372a
--- /dev/null
+++ b/tests/wpt/tests/resources/test/tests/functional/assert-throws-dom.html
@@ -0,0 +1,55 @@
+<!DOCTYPE HTML>
+<title>assert_throws_dom</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(() => {
+  function f() {
+      assert_true(false, "Trivial assertion.");
+
+      // Would lead to throwing a SyntaxError.
+      document.createElement("div").contentEditable = "invalid";
+    }
+
+  assert_throws_dom("SyntaxError", () => { f(); });
+}, "Violated assertion nested in `assert_throws_dom`.");
+</script>
+<script type="text/json" id="expected">
+{
+  "type": "complete",
+  "summarized_status": {
+    "message": null,
+    "status_string": "OK"
+  },
+  "summarized_tests": [
+    {
+      "message": "assert_true: Trivial assertion. expected true got false",
+      "name": "Violated assertion nested in `assert_throws_dom`.",
+      "properties": {},
+      "status_string": "FAIL"
+    }
+  ],
+  "summarized_asserts": [
+    {
+      "assert_name": "assert_throws_dom",
+      "test": "Violated assertion nested in `assert_throws_dom`.",
+      "args": [
+        "\"SyntaxError\"",
+        "function \"() => { f(); }\""
+      ],
+      "status": 1
+    },
+    {
+      "assert_name": "assert_true",
+      "test": "Violated assertion nested in `assert_throws_dom`.",
+      "args": [
+        "false",
+        "\"Trivial assertion.\""
+      ],
+      "status": 1
+    }
+  ]
+}
+</script>
+
diff --git a/tests/wpt/tests/resources/testdriver.js b/tests/wpt/tests/resources/testdriver.js
index e582477da9b..a9ab7220aad 100644
--- a/tests/wpt/tests/resources/testdriver.js
+++ b/tests/wpt/tests/resources/testdriver.js
@@ -296,12 +296,6 @@
                                         inline: "nearest"});
             }
 
-            var pointerInteractablePaintTree = getPointerInteractablePaintTree(element);
-            if (pointerInteractablePaintTree.length === 0 ||
-                !element.contains(pointerInteractablePaintTree[0])) {
-                return Promise.reject(new Error("element send_keys intercepted error"));
-            }
-
             return window.test_driver_internal.send_keys(element, keys);
         },
 
diff --git a/tests/wpt/tests/resources/testharness.js b/tests/wpt/tests/resources/testharness.js
index 112790bb1ee..413993089be 100644
--- a/tests/wpt/tests/resources/testharness.js
+++ b/tests/wpt/tests/resources/testharness.js
@@ -1426,12 +1426,16 @@
         function assert_wrapper(...args) {
             let status = Test.statuses.TIMEOUT;
             let stack = null;
+            let new_assert_index = null;
             try {
                 if (settings.debug) {
                     console.debug("ASSERT", name, tests.current_test && tests.current_test.name, args);
                 }
                 if (tests.output) {
                     tests.set_assert(name, args);
+                    // Remember the newly pushed assert's index, because `apply`
+                    // below might push new asserts.
+                    new_assert_index = tests.asserts_run.length - 1;
                 }
                 const rv = f.apply(undefined, args);
                 status = Test.statuses.PASS;
@@ -1445,7 +1449,7 @@
                     stack = get_stack();
                 }
                 if (tests.output) {
-                    tests.set_assert_status(status, stack);
+                    tests.set_assert_status(new_assert_index, status, stack);
                 }
             }
         }
@@ -3673,8 +3677,8 @@
         this.asserts_run.push(new AssertRecord(this.current_test, assert_name, args))
     }
 
-    Tests.prototype.set_assert_status = function(status, stack) {
-        let assert_record = this.asserts_run[this.asserts_run.length - 1];
+    Tests.prototype.set_assert_status = function(index, status, stack) {
+        let assert_record = this.asserts_run[index];
         assert_record.status = status;
         assert_record.stack = stack;
     }
diff --git a/tests/wpt/tests/screen-capture/capture-controller-event-target.https.window.js b/tests/wpt/tests/screen-capture/capture-controller-event-target.https.window.js
new file mode 100644
index 00000000000..379f3595683
--- /dev/null
+++ b/tests/wpt/tests/screen-capture/capture-controller-event-target.https.window.js
@@ -0,0 +1,60 @@
+'use strict';
+
+const controller = new CaptureController();
+const type = 'my-event-type';
+const listeners = {};
+const listener_count = 10;
+for (let i = 0; i < listener_count; i++) {
+  listeners[i] = {
+    callback: (event) => {
+      assert_equals(event.type, type, `Event type sent to listener ${i}`);
+      listeners[i].execution_count++;
+    }
+  };
+}
+
+test(() => {
+  for (const i in listeners) {
+    listeners[i].execution_count = 0;
+    controller.addEventListener(type, listeners[i].callback);
+  }
+  controller.dispatchEvent(new Event(type));
+  for (const i in listeners) {
+    assert_equals(
+        listeners[i].execution_count, 1,
+        `Callback execution count for listener ${i}`);
+  }
+}, 'Registering listeners on CaptureController and dispatching an event.');
+
+test(() => {
+  for (const i in listeners) {
+    listeners[i].execution_count = 0;
+  }
+  controller.dispatchEvent(new Event(type));
+  controller.dispatchEvent(new Event(type));
+  controller.dispatchEvent(new Event(type));
+  for (const i in listeners) {
+    assert_equals(
+        listeners[i].execution_count, 3,
+        `Callback execution count for listener ${i}`);
+  }
+}, 'Dispatching an multiple events to CaptureController.');
+
+test(() => {
+  for (const i in listeners) {
+    listeners[i].execution_count = 0;
+    if (i % 3) {
+      listeners[i].removed = false;
+    } else {
+      listeners[i].removed = true;
+      controller.removeEventListener(type, listeners[i].callback);
+    };
+  }
+  controller.dispatchEvent(new Event(type));
+  controller.dispatchEvent(new Event(type));
+  for (const i in listeners) {
+    assert_equals(
+        listeners[i].execution_count, listeners[i].removed ? 0 : 2,
+        `Callback execution count for listener ${i}`);
+  }
+}, 'Unregistering listeners from CaptureController and dispatching an event.');
diff --git a/tests/wpt/tests/scroll-animations/css/animation-timeline-parsing.html b/tests/wpt/tests/scroll-animations/css/animation-timeline-parsing.html
index f0061c5705d..9e3c1078b5b 100644
--- a/tests/wpt/tests/scroll-animations/css/animation-timeline-parsing.html
+++ b/tests/wpt/tests/scroll-animations/css/animation-timeline-parsing.html
@@ -36,6 +36,7 @@ test_invalid_value('animation-timeline', '"test"');
 // <axis> = block | inline | x | y
 // <scroller> = root | nearest | self
 test_valid_value('animation-timeline', 'scroll()');
+test_valid_value('animation-timeline', ' scroll() ', 'scroll()');
 test_valid_value('animation-timeline', 'scroll(block)', 'scroll()');
 test_valid_value('animation-timeline', 'scroll(inline)');
 test_valid_value('animation-timeline', 'scroll(x)');
@@ -56,6 +57,7 @@ test_invalid_value('animation-timeline', 'scroll("string")');
 
 // https://drafts.csswg.org/scroll-animations-1/#view-notation
 test_valid_value('animation-timeline', 'view()');
+test_valid_value('animation-timeline', ' view() ', 'view()');
 test_valid_value('animation-timeline', 'view(block)', 'view()');
 test_valid_value('animation-timeline', 'view(inline)');
 test_valid_value('animation-timeline', 'view(x)');
diff --git a/tests/wpt/tests/scroll-animations/css/animation-timeline-view-functional-notation.tentative.html b/tests/wpt/tests/scroll-animations/css/animation-timeline-view-functional-notation.tentative.html
index 3ac94478e59..d91dfe924b7 100644
--- a/tests/wpt/tests/scroll-animations/css/animation-timeline-view-functional-notation.tentative.html
+++ b/tests/wpt/tests/scroll-animations/css/animation-timeline-view-functional-notation.tentative.html
@@ -118,7 +118,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['content', 'target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'hidden';
-    div.style.animation = "fade-in-out-without-timeline-range 1s linear";
+    div.style.animation = "fade-in-out-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view()";
 
   });
@@ -142,7 +142,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['content', 'target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'hidden';
-    div.style.animation = "fade-in-out-without-timeline-range 1s linear";
+    div.style.animation = "fade-in-out-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view(50px)";
   });
   // So the range is [250px, 450px].
@@ -166,7 +166,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['content', 'target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'hidden';
-    div.style.animation = "fade-in-out-without-timeline-range 1s linear";
+    div.style.animation = "fade-in-out-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view(auto 50px)";
   });
   // So the range is [250px, 500px].
@@ -190,7 +190,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'hidden';
-    div.style.animation = "fade-out-without-timeline-range 1s linear";
+    div.style.animation = "fade-out-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view(inline)";
   });
   // So the range is [-200px, 100px], but it is impossible to scroll to the
@@ -210,7 +210,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'hidden';
-    div.style.animation = "fade-out-without-timeline-range 1s linear";
+    div.style.animation = "fade-out-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view(x)";
   });
   // So the range is [-200px, 100px], but it is impossible to scroll to the
@@ -229,7 +229,7 @@ promise_test(async t => {
 promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
-    div.style.animation = "fade-out-without-timeline-range 1s linear";
+    div.style.animation = "fade-out-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view(y)";
   });
   // So the range is [-200px, 100px], but it is impossible to scroll to the
@@ -249,7 +249,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'hidden';
-    div.style.animation = "fade-out-without-timeline-range 1s linear";
+    div.style.animation = "fade-out-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view(x 50px)";
   });
   // So the range is [-150px, 50px], but it is impossible to scroll to the
@@ -268,8 +268,9 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'hidden';
-    div.style.animation = "fade-out-without-timeline-range 1s linear, " +
-                          "change-font-size-without-timeline-range 1s linear";
+    div.style.animation
+      = "fade-out-without-timeline-range 1s linear forwards, " +
+        "change-font-size-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view(50px), view(inline 50px)";
   });
 
@@ -300,7 +301,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'hidden';
-    div.style.animation = "fade-out-without-timeline-range 1s linear";
+    div.style.animation = "fade-out-without-timeline-range 1s linear forwards";
     div.style.animationTimeline = "view(inline)";
   });
   await scrollLeft(container, 0);
@@ -327,7 +328,7 @@ promise_test(async t => {
 promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['content', 'target', 'content']);
   await runAndWaitForFrameUpdate(() => {
-    div.style.animation = "fade-in-out 1s linear";
+    div.style.animation = "fade-in-out 1s linear forwards";
     div.style.animationTimeline = "view()";
   });
 
@@ -349,7 +350,7 @@ promise_test(async t => {
 promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['content', 'target', 'content']);
   await runAndWaitForFrameUpdate(() => {
-    div.style.animation = "fade-in-out 1s linear";
+    div.style.animation = "fade-in-out 1s linear forwards";
     div.style.animationTimeline = "view(50px)";
   });
 
@@ -370,7 +371,7 @@ promise_test(async t => {
 promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['content', 'target', 'content']);
   await runAndWaitForFrameUpdate(() => {
-    div.style.animation = "fade-in-out 1s linear";
+    div.style.animation = "fade-in-out 1s linear forwards";
     div.style.animationTimeline = "view(auto 50px)";
   });
 
@@ -393,7 +394,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'scroll';
-    div.style.animation = "fade-out 1s linear";
+    div.style.animation = "fade-out 1s linear forwards";
     div.style.animationTimeline = "view(inline)";
   });
 
@@ -409,7 +410,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'scroll';
-    div.style.animation = "fade-out 1s linear";
+    div.style.animation = "fade-out 1s linear forwards";
     div.style.animationTimeline = "view(x)";
   });
 
@@ -425,7 +426,7 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'scroll';
-    div.style.animation = "fade-out 1s linear";
+    div.style.animation = "fade-out 1s linear forwards";
     div.style.animationTimeline = "view(y)";
   });
 
@@ -442,7 +443,7 @@ promise_test(async t => {
   await runAndWaitForFrameUpdate(() => {
     container.style.overflowY = 'hidden';
     container.style.overflowX = 'scroll';
-    div.style.animation = "fade-out 1s linear";
+    div.style.animation = "fade-out 1s linear forwards";
     div.style.animationTimeline = "view(x 50px)";
   });
 
@@ -456,7 +457,8 @@ promise_test(async t => {
   let [container, div] = createTargetWithStuff(t, ['target', 'content']);
   await runAndWaitForFrameUpdate(() => {
     container.style.overflow = 'scroll';
-    div.style.animation = "fade-out 1s linear, change-font-size 1s linear";
+    div.style.animation
+        = "fade-out 1s linear forwards, change-font-size 1s linear forwards";
     div.style.animationTimeline = "view(), view(inline)";
   });
 
@@ -487,7 +489,7 @@ promise_test(async t => {
   await runAndWaitForFrameUpdate(() => {
     container.style.overflowY = 'hidden';
     container.style.overflowX = 'scroll';
-    div.style.animation = "fade-out 1s linear";
+    div.style.animation = "fade-out 1s linear forwards";
   });
 
   div.style.animationTimeline = "view(inline)";
diff --git a/tests/wpt/tests/scroll-animations/css/deferred-timeline-composited.html b/tests/wpt/tests/scroll-animations/css/deferred-timeline-composited.html
index 239c0ca50a9..e2437911b39 100644
--- a/tests/wpt/tests/scroll-animations/css/deferred-timeline-composited.html
+++ b/tests/wpt/tests/scroll-animations/css/deferred-timeline-composited.html
@@ -64,12 +64,13 @@
       // Switch out the timeline associated with timeline-scope:--t.
       scroller_block.classList.toggle('timeline');
       scroller_inline.classList.toggle('timeline');
-      await waitForCompositorReady();
+      await waitForNextFrame();
       let scrollPromise = new Promise((resolve) => {
         scroller_inline.addEventListener('scrollend', resolve);
-      })
+      });
       scroller_inline.scrollTo({left: 100, behavior: "smooth"}); // 50%
       await scrollPromise;
+      await waitForNextFrame();
       takeScreenshot();
     })();
   </script>
diff --git a/tests/wpt/tests/scroll-animations/css/view-timeline-animation.html b/tests/wpt/tests/scroll-animations/css/view-timeline-animation.html
index d1ea2f6c07f..1bf034a742f 100644
--- a/tests/wpt/tests/scroll-animations/css/view-timeline-animation.html
+++ b/tests/wpt/tests/scroll-animations/css/view-timeline-animation.html
@@ -53,7 +53,7 @@
   <style>
     #target {
       view-timeline: --t1;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -79,7 +79,7 @@
     assert_equals(getComputedStyle(target).zIndex, '50');
     await scrollTop(scroller, 200); // 100% (exit 100%)
     assert_equals(getComputedStyle(target).zIndex, '100');
-    await scrollTop(scroller, 225);
+    document.getAnimations()[0].effect.updateTiming( { fill: 'none' });
     assert_equals(getComputedStyle(target).zIndex, '-1');
   }, 'Default view-timeline');
 </script>
@@ -88,7 +88,7 @@
   <style>
     #target {
       view-timeline: --t1 x;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -114,7 +114,7 @@
     assert_equals(getComputedStyle(target).zIndex, '50');
     await scrollLeft(scroller, 200); // 100% (exit 100%)
     assert_equals(getComputedStyle(target).zIndex, '100');
-    await scrollLeft(scroller, 225);
+    document.getAnimations()[0].effect.updateTiming( { fill: 'none' });
     assert_equals(getComputedStyle(target).zIndex, '-1');
   }, 'Horizontal view-timeline');
 </script>
@@ -140,11 +140,11 @@
       height: 50px;
     }
     #target_v {
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --tv;
     }
     #target_h {
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --th;
     }
   </style>
@@ -197,7 +197,8 @@
     await scrollTop(scroller, 200); // 100% (exit 100%)
     assert_equals(getComputedStyle(target_v).zIndex, '100');
     assert_equals(getComputedStyle(target_h).zIndex, '-1');
-    await scrollTop(scroller, 225);
+    document.getElementById('target_v').getAnimations()[0].
+        effect.updateTiming({ fill: 'none' });
     assert_equals(getComputedStyle(target_v).zIndex, '-1');
     assert_equals(getComputedStyle(target_h).zIndex, '-1');
 
@@ -214,7 +215,8 @@
     await scrollLeft(scroller, 200); // 100% (exit 100%)
     assert_equals(getComputedStyle(target_v).zIndex, '-1');
     assert_equals(getComputedStyle(target_h).zIndex, '100');
-    await scrollLeft(scroller, 225);
+    document.getElementById('target_h').getAnimations()[0].
+        effect.updateTiming({ fill: 'none' });
     assert_equals(getComputedStyle(target_v).zIndex, '-1');
     assert_equals(getComputedStyle(target_h).zIndex, '-1');
   }, 'Multiple view-timelines on the same element');
diff --git a/tests/wpt/tests/scroll-animations/css/view-timeline-inset-animation.html b/tests/wpt/tests/scroll-animations/css/view-timeline-inset-animation.html
index 9ba88fde507..f9aa0f29189 100644
--- a/tests/wpt/tests/scroll-animations/css/view-timeline-inset-animation.html
+++ b/tests/wpt/tests/scroll-animations/css/view-timeline-inset-animation.html
@@ -93,7 +93,7 @@
     #target {
       view-timeline: --t1;
       view-timeline-inset: 10px;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -108,16 +108,14 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 10, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 0, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset with one value');
 </script>
-
 <template id=test_two_values>
   <style>
     #target {
       view-timeline: --t1;
       view-timeline-inset: 10px 20px;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -132,7 +130,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset with two values');
 </script>
 
@@ -142,7 +139,7 @@
       font-size: 10px;
       view-timeline: --t1;
       view-timeline-inset: 10px 2em;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -157,7 +154,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset with em values');
 </script>
 
@@ -167,7 +163,7 @@
       font-size: 10px;
       view-timeline: --t1;
       view-timeline-inset: calc(5px + max(1%, 5%)) 20%;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -182,7 +178,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset with percentage values');
 </script>
 
@@ -191,7 +186,7 @@
     #target {
       view-timeline: --t1;
       view-timeline-inset: -10px -20px;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -206,7 +201,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 - 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 - 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 + 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:220, expected:-1 });
   }, 'view-timeline-inset with negative values');
 </script>
 
@@ -215,7 +209,7 @@
     #target {
       view-timeline: --t1 x;
       view-timeline-inset: 10px 20px;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -230,7 +224,6 @@
     await assertValueAt(scroller, target, { scrollLeft:70 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:135 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:200, expected:-1 });
   }, 'view-timeline-inset with horizontal scroller');
 </script>
 
@@ -239,7 +232,7 @@
     #target {
       view-timeline: --t1 block;
       view-timeline-inset: 10px 20px;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -254,7 +247,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset with block scroller');
 </script>
 
@@ -263,7 +255,7 @@
     #target {
       view-timeline: --t1 inline;
       view-timeline-inset: 10px 20px;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -278,7 +270,6 @@
     await assertValueAt(scroller, target, { scrollLeft:70 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:135 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:200, expected:-1 });
   }, 'view-timeline-inset with inline scroller');
 </script>
 
@@ -290,7 +281,7 @@
     #target {
       view-timeline: --t1 block;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -305,7 +296,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset:auto, block');
 </script>
 
@@ -318,7 +308,7 @@
     #target {
       view-timeline: --t1 block;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -333,7 +323,6 @@
     await assertValueAt(scroller, target, { scrollLeft:70 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:135 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:200, expected:-1 });
   }, 'view-timeline-inset:auto, block, vertical-lr');
 </script>
 
@@ -346,7 +335,7 @@
     #target {
       view-timeline: --t1 block;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -362,7 +351,6 @@
     await assertValueAt(scroller, target, { scrollLeft:-(70 + 20), expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:-(135 + 5), expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:-(200 - 10), expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:-200, expected:-1 });
   }, 'view-timeline-inset:auto, block, vertical-rl');
 </script>
 
@@ -374,7 +362,7 @@
     #target {
       view-timeline: --t1 inline;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -389,7 +377,6 @@
     await assertValueAt(scroller, target, { scrollLeft:70 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:135 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:200, expected:-1 });
   }, 'view-timeline-inset:auto, inline');
 </script>
 
@@ -402,7 +389,7 @@
     #target {
       view-timeline: --t1 inline;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -417,7 +404,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset:auto, inline, vertical-rl');
 </script>
 
@@ -430,7 +416,7 @@
     #target {
       view-timeline: --t1 inline;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -445,7 +431,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset:auto, inline, vertical-lr');
 </script>
 
@@ -458,7 +443,7 @@
     #target {
       view-timeline: --t1 inline;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -473,7 +458,6 @@
     await assertValueAt(scroller, target, { scrollLeft:-(70 + 20), expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:-(135 + 5), expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:-(200 - 10), expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:-200, expected:-1 });
   }, 'view-timeline-inset:auto, inline, rtl');
 </script>
 
@@ -487,7 +471,7 @@
     #target {
       view-timeline: --t1 inline;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -502,7 +486,6 @@
     await assertValueAt(scroller, target, { scrollTop:-(50 + 20), expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:-(125 + 5), expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:-(200 - 10), expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:-200, expected:-1 });
   }, 'view-timeline-inset:auto, inline, vertical-rl, rtl');
 </script>
 
@@ -516,7 +499,7 @@
     #target {
       view-timeline: --t1 inline;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -531,7 +514,6 @@
     await assertValueAt(scroller, target, { scrollTop:-(50 + 20), expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:-(125 + 5), expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:-(200 - 10), expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:-200, expected:-1 });
   }, 'view-timeline-inset:auto, inline, vertical-lr, rtl');
 </script>
 
@@ -543,7 +525,7 @@
     #target {
       view-timeline: --t1 y;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -558,7 +540,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset:auto, y');
 </script>
 
@@ -571,7 +552,7 @@
     #target {
       view-timeline: --t1 y;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -586,7 +567,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset:auto, y, vertical-rl');
 </script>
 
@@ -600,7 +580,7 @@
     #target {
       view-timeline: --t1 y;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -615,7 +595,6 @@
     await assertValueAt(scroller, target, { scrollTop:-(50 + 20), expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:-(125 + 5), expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:-(200 - 10), expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:-200, expected:-1 });
   }, 'view-timeline-inset:auto, y, vertical-rl, rtl');
 </script>
 
@@ -627,7 +606,7 @@
     #target {
       view-timeline: --t1 x;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -642,7 +621,6 @@
     await assertValueAt(scroller, target, { scrollLeft:70 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:135 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:200, expected:-1 });
   }, 'view-timeline-inset:auto, x');
 </script>
 
@@ -655,7 +633,7 @@
     #target {
       view-timeline: --t1 x;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -670,7 +648,6 @@
     await assertValueAt(scroller, target, { scrollLeft:-(70 + 20), expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:-(135 + 5), expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:-(200 - 10), expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:-200, expected:-1 });
   }, 'view-timeline-inset:auto, x, rtl');
 </script>
 
@@ -683,7 +660,7 @@
     #target {
       view-timeline: --t1 x;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -698,7 +675,6 @@
     await assertValueAt(scroller, target, { scrollLeft:70 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:135 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:200, expected:-1 });
   }, 'view-timeline-inset:auto, x, vertical-lr');
 </script>
 
@@ -711,7 +687,7 @@
     #target {
       view-timeline: --t1 x;
       view-timeline-inset: auto auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -726,7 +702,6 @@
     await assertValueAt(scroller, target, { scrollLeft:-(70 + 20), expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollLeft:-(135 + 5), expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollLeft:-(200 - 10), expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollLeft:-200, expected:-1 });
   }, 'view-timeline-inset:auto, x, vertical-rl');
 </script>
 
@@ -739,7 +714,7 @@
     #target {
       view-timeline: --t1;
       view-timeline-inset: 10% auto;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
@@ -757,7 +732,6 @@
     await assertValueAt(scroller, target, { scrollTop:50 + 20, expected:0 }); // 0%
     await assertValueAt(scroller, target, { scrollTop:125 + 5, expected:50 }); // 50%
     await assertValueAt(scroller, target, { scrollTop:200 - 10, expected:100 }); // 100%
-    await assertValueAt(scroller, target, { scrollTop:200, expected:-1 });
   }, 'view-timeline-inset:auto, mix');
 </script>
 
diff --git a/tests/wpt/tests/scroll-animations/css/view-timeline-lookup.html b/tests/wpt/tests/scroll-animations/css/view-timeline-lookup.html
index 98f11b85429..067ac1fa969 100644
--- a/tests/wpt/tests/scroll-animations/css/view-timeline-lookup.html
+++ b/tests/wpt/tests/scroll-animations/css/view-timeline-lookup.html
@@ -35,7 +35,7 @@
     #target {
       height: 0px;
       view-timeline: --t1;
-      animation: anim 1s linear;
+      animation: anim 1s linear forwards;
       animation-timeline: --t1;
     }
   </style>
diff --git a/tests/wpt/tests/scroll-animations/scroll-timelines/scroll-animation-effect-phases.tentative.html b/tests/wpt/tests/scroll-animations/scroll-timelines/scroll-animation-effect-phases.tentative.html
index 67bc36ca104..41ae0e0612f 100644
--- a/tests/wpt/tests/scroll-animations/scroll-timelines/scroll-animation-effect-phases.tentative.html
+++ b/tests/wpt/tests/scroll-animations/scroll-timelines/scroll-animation-effect-phases.tentative.html
@@ -217,8 +217,8 @@
           expected_effect_progress,
           0.001,
           "animation effect progress");
-      assert_phase_at_time(
-          animation, expected_effect_phase, animation.currentTime);
+      assert_phase(
+          animation, expected_effect_phase);
       assert_approx_equals(
           parseFloat(getComputedStyle(target).opacity), expected_opacity,
           0.001,
@@ -285,6 +285,81 @@
     return animation;
   }
 
+
+  promise_test(async t => {
+    const animation = createScrollLinkedOpacityAnimationWithDelays(t);
+    const scroller = animation.timeline.source;
+    const maxScroll = scroller.scrollHeight - scroller.clientHeight;
+
+    // scroll pos
+    // current time
+    // start time
+    // |
+    // |---- 25% before ----|----  50% active ----|---- 25% after ----|
+    animation.play();
+    await animation.ready;
+    assert_percents_equal(animation.startTime, 0);
+    assert_phase(animation, 'before');
+
+    // start time                 scroll pos
+    // |                          current time
+    // |                              |
+    // |---- 25% before ----|----  50% active ----|---- 25% after ----|
+    scroller.scrollTop = 0.5 * maxScroll;
+    await waitForNextFrame();
+    assert_phase(animation, 'active');
+
+    // start time                scroll pos                      current time
+    // |                              |                               |
+    // |---- 25% before ----|----  50% active ----|---- 25% after ----|
+    animation.playbackRate = 2;
+    assert_phase(animation, 'after');
+
+    // start time                scroll pos                      current time
+    // |                              |                                |
+    // |---- 33.3% before ----|----  66.7% active ---------------------|
+    animation.effect.updateTiming({ endDelay: 0 });
+    assert_phase(animation, 'active');
+
+    //                           scroll pos                        start time
+    //                           current time                           |
+    //                                |                                 |
+    // |---- 33.3% before ----|----  66.7% active ----------------------|
+    animation.playbackRate = -1;
+    assert_percents_equal(animation.startTime, 100);
+    assert_phase(animation, 'active');
+
+    //                                                             start time
+    //                             scroll pos                     current time
+    // |                               |                                  |
+    // |---- 33.3% before  ----|----  66.7% active -----------------------|
+    animation.playbackRate = -2;
+    assert_phase(animation, 'active');
+
+    // current time                                                  start time
+    // |                                                             scroll pos
+    // |                                                                  |
+    // |---- 33.3% before  ----|----  66.7% active -----------------------|
+    scroller.scrollTop = maxScroll;
+    await waitForNextFrame();
+    assert_phase(animation, 'before');
+
+    // current time                                                  start time
+    // |                                                             scroll pos
+    // |                                                                  |
+    // |---------------------  100% active -------------------------------|
+    animation.effect.updateTiming({ delay: 0 });
+    assert_phase(animation, 'active');
+
+    // Finally, switch to a document timeline.  The before-active boundary
+    // becomes exclusive.
+    animation.timeline = document.timeline;
+    animation.currentTime = 0;
+    await waitForNextFrame();
+    assert_phase(animation, 'before');
+
+  }, 'Playback rate affects whether active phase boundary is inclusive.');
+
   promise_test(async t => {
     const animation = createScrollLinkedOpacityAnimationWithDelays(t);
     const scroller = animation.timeline.source;
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-current-time-vertical-rl.tentative.html b/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-current-time-vertical-rl.tentative.html
index 5bc45984522..beb380060e1 100644
--- a/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-current-time-vertical-rl.tentative.html
+++ b/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-current-time-vertical-rl.tentative.html
@@ -71,13 +71,17 @@
 
     // Advance to the end of the animation.
     container.scrollLeft = -1000;
+    anim.effect.updateTiming({ fill: 'forwards' });
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 100,
                           "Timeline's currentTime at end offset");
     assert_percents_equal(anim.currentTime, 100,
                           "Animation's currentTime at end offset");
     assert_equals(getComputedStyle(target).opacity, '0.7',
-                  'Effect is in the active phase at effect end time');
+                  'Opacity with fill forwards at effect end time');
+    anim.effect.updateTiming({ fill: 'none' });
+    assert_equals(getComputedStyle(target).opacity, '1',
+                  'Opacity with fill none at effect end time');
 
     // Advance to the scroll limit.
     container.scrollLeft = -1600;
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-current-time.tentative.html b/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-current-time.tentative.html
index a6530f66312..c24d04412fc 100644
--- a/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-current-time.tentative.html
+++ b/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-current-time.tentative.html
@@ -76,8 +76,8 @@
                           "Timeline's currentTime at end offset");
     assert_percents_equal(anim.currentTime, 100,
                           "Animation's currentTime at end offset");
-    assert_equals(getComputedStyle(target).opacity, '0.7',
-                  'Effect is in the active phase at effect end time');
+    assert_equals(getComputedStyle(target).opacity, '1',
+                  'Effect is in the after phase at effect end time');
 
     // Advance to the scroll limit.
     container.scrollTop = 1600;
@@ -120,31 +120,31 @@
     container.scrollTop = 100;
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 75,
-                          "Timeline's current time at start offset");
+                          "Timeline's current time at midpoint");
     assert_percents_equal(anim.currentTime, 75,
-                          "Animation's current time at start offset");
+                          "Animation's current time at midpoint");
     assert_equals(getComputedStyle(target).opacity, '0.6',
-                  'Effect at the start of the active phase');
+                  'Effect at the middle of the active phase');
 
     // Advance to end-offset
     container.scrollTop = 200;
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 100,
-                          "Timeline's current time at start offset");
+                          "Timeline's current time at end offset");
     assert_percents_equal(anim.currentTime, 100,
-                          "Animation's current time at start offset");
-    assert_equals(getComputedStyle(target).opacity, '0.7',
-                  'Effect at the start of the active phase');
+                          "Animation's current time at end offset");
+    assert_equals(getComputedStyle(target).opacity, '1',
+                  'Effect inactive at the end offset');
 
     // Advance to scroll limit.
     container.scrollTop = 800;
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 250,
-                          "Timeline's current time at start offset");
+                          "Timeline's current time at scroll limit");
     assert_percents_equal(anim.currentTime, 100,
-                          "Animation's current time at start offset");
+                          "Animation's current time at scroll limit");
     assert_equals(getComputedStyle(target).opacity, '1',
-                  'Effect at the start of the active phase');
+                  'Effect inactive in the after phase');
 
   }, 'View timeline does not clamp starting scroll offset at 0');
 
@@ -184,11 +184,11 @@
     container.scrollTop = 700;
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 25,
-                          "Timeline's current time at start offset");
+                          "Timeline's current time at the midpoint");
     assert_percents_equal(anim.currentTime, 25,
-                          "Animation's current time at start offset");
+                          "Animation's current time at the midpoint");
     assert_equals(getComputedStyle(target).opacity, '0.4',
-                  'Effect at the start of the active phase');
+                  'Effect at the midpoint of the active phase');
 
     // Advance to end offset.
     container.scrollTop = 800;
@@ -197,6 +197,8 @@
                           "Timeline's currentTime at max scroll offset");
     assert_percents_equal(anim.currentTime, 50,
                           "Animation's currentTime at max scroll offset");
+    // The active-after boundary is inclusive since at the maximum scroll
+    // position.
     assert_equals(getComputedStyle(target).opacity, "0.5",
                   'Effect at end of active phase');
   }, 'View timeline  does not clamp end scroll offset at max scroll');
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-nested-subject.tentative.html b/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-nested-subject.tentative.html
index 2cc8af882ff..6fdc7c68229 100644
--- a/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-nested-subject.tentative.html
+++ b/tests/wpt/tests/scroll-animations/view-timelines/block-view-timeline-nested-subject.tentative.html
@@ -92,8 +92,8 @@
                           "Timeline's currentTime at end offset");
     assert_percents_equal(anim.currentTime, 100,
                           "Animation's currentTime at end offset");
-    assert_equals(getComputedStyle(target).opacity, '0.7',
-                  'Effect is in the active phase at effect end time');
+    assert_equals(getComputedStyle(target).opacity, '1',
+                  'Effect is in the after phase at effect end time');
 
     // Advance to the scroll limit.
     container.scrollTop = 1600;
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/inline-view-timeline-current-time.tentative.html b/tests/wpt/tests/scroll-animations/view-timelines/inline-view-timeline-current-time.tentative.html
index 5b37798fe89..59d73d0cdf7 100644
--- a/tests/wpt/tests/scroll-animations/view-timelines/inline-view-timeline-current-time.tentative.html
+++ b/tests/wpt/tests/scroll-animations/view-timelines/inline-view-timeline-current-time.tentative.html
@@ -91,8 +91,8 @@
                           "Timeline's currentTime at end offset");
     assert_percents_equal(anim.currentTime, 100,
                           "Animation's currentTime at end offset");
-    assert_equals(getComputedStyle(target).opacity, '0.7',
-                  'Effect is in the active phase at effect end time');
+    assert_equals(getComputedStyle(target).opacity, '1',
+                  'Effect is in the after phase at effect end time');
 
     // Advance to the scroll limit.
     container.scrollLeft = 1600;
@@ -141,31 +141,31 @@
     container.scrollLeft = 100;
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 75,
-                          "Timeline's current time at start offset");
+                          "Timeline's current time at the midpoint");
     assert_percents_equal(anim.currentTime, 75,
-                          "Animation's current time at start offset");
+                          "Animation's current time at the midpoint");
     assert_equals(getComputedStyle(target).opacity, '0.6',
-                  'Effect at the start of the active phase');
+                  'Effect at the midpoint of the active phase');
 
     // Advance to end-offset
     container.scrollLeft = 200;
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 100,
-                          "Timeline's current time at start offset");
+                          "Timeline's current time at end offset");
     assert_percents_equal(anim.currentTime, 100,
-                          "Animation's current time at start offset");
-    assert_equals(getComputedStyle(target).opacity, '0.7',
-                  'Effect at the start of the active phase');
+                          "Animation's current time at end offset");
+    assert_equals(getComputedStyle(target).opacity, '1',
+                  'Effect at the end of the active phase');
 
     // Advance to scroll limit.
     container.scrollLeft = 800;
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 250,
-                          "Timeline's current time at start offset");
+                          "Timeline's current time at the scroll limit");
     assert_percents_equal(anim.currentTime, 100,
-                          "Animation's current time at start offset");
+                          "Animation's current time at the scroll limit");
     assert_equals(getComputedStyle(target).opacity, '1',
-                  'Effect at the start of the active phase');
+                  'Effect at the scroll limit');
 
   }, 'View timeline does not clamp starting scroll offset at 0');
 
@@ -211,11 +211,11 @@
     container.scrollLeft = 700;
     await waitForNextFrame();
     assert_percents_equal(timeline.currentTime, 25,
-                          "Timeline's current time at start offset");
+                          "Timeline's current time at midpoint");
     assert_percents_equal(anim.currentTime, 25,
-                          "Animation's current time at start offset");
+                          "Animation's current time at midpoint");
     assert_equals(getComputedStyle(target).opacity, '0.4',
-                  'Effect at the start of the active phase');
+                  'Effect at the midpoint of the active phase');
 
     // Advance to end offset.
     container.scrollLeft = 800;
@@ -224,6 +224,7 @@
                           "Timeline's currentTime at max scroll offset");
     assert_percents_equal(anim.currentTime, 50,
                           "Animation's currentTime at max scroll offset");
+    // The active-after boundary is inclusive since at the scroll-limit.
     assert_equals(getComputedStyle(target).opacity, "0.5",
                   'Effect at end of active phase');
   }, 'View timeline does not clamp end scroll offset at max scroll');
@@ -281,8 +282,8 @@
                           "Timeline's currentTime at end offset");
     assert_percents_equal(anim.currentTime, 100,
                           "Animation's currentTime at end offset");
-    assert_equals(getComputedStyle(target).opacity, '0.7',
-                  'Effect is in the active phase at effect end time');
+    assert_equals(getComputedStyle(target).opacity, '1',
+                  'Effect is in the after phase at effect end time');
 
     // Advance to the scroll limit.
     container.scrollLeft = -1600;
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/range-boundary-ref.html b/tests/wpt/tests/scroll-animations/view-timelines/range-boundary-ref.html
new file mode 100644
index 00000000000..057d0afabcd
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/range-boundary-ref.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title></title>
+</head>
+<style type="text/css">
+  .scroller {
+    display:  inline-block;
+    border: 2px solid black;
+    height:  100px;
+    width:  100px;
+    overflow: hidden;
+  }
+  .box {
+    background: gray;
+    height: 50px;
+    width: 50px;
+    margin: 0;
+  }
+  .half-shift {
+    transform:  translateX(25px);
+  }
+  .full-shift {
+    transform: translateX(50px);
+  }
+  .blue {
+    background-color:  #99f;
+  }
+  .green {
+    background-color: #9f9;
+  }
+</style>
+<body>
+  <div id="scroller-1" class="scroller">
+    <div class="box green"></div>
+    <div class="box blue full-shift"></div>
+  </div>
+  <div id="scroller-2" class="scroller">
+    <div class="box"></div>
+    <div class="box blue"></div>
+  </div>
+  <br>
+  <div id="scroller-3" class="scroller">
+    <div class="box"></div>
+    <div class="box blue"></div>
+  </div>
+  <div id="scroller-4" class="scroller">
+    <div class="box"></div>
+    <div class="box green"></div>
+  </div>
+  <br>
+  <div id="scroller-5" class="scroller">
+    <div class="box blue"></div>
+    <div class="box half-shift green"></div>
+  </div>
+  <div id="scroller-6" class="scroller">
+    <div class="box"></div>
+    <div class="box green"></div>
+  </div>
+</body>
+</html>
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/range-boundary.html b/tests/wpt/tests/scroll-animations/view-timelines/range-boundary.html
new file mode 100644
index 00000000000..e2ca394ec0c
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/range-boundary.html
@@ -0,0 +1,153 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <link rel="match" href="range-boundary-ref.html">
+  <title></title>
+</head>
+<style type="text/css">
+  @keyframes transform {
+    0% { transform: translateX(25px); }
+    100% { transform: translateX(50px); }
+  }
+
+  @keyframes background {
+    0% { background-color: #99f; }
+    100% { background-color: #9f9; }
+  }
+
+  .scroller {
+    display:  inline-block;
+    border: 2px solid black;
+    height:  100px;
+    width:  100px;
+    overflow: hidden;
+  }
+  .spacer {
+    height: 300px;
+    margin:  0;
+  }
+  .box {
+    background: gray;
+    height: 50px;
+    width: 50px;
+    margin: 0;
+    animation:  transform auto, background auto;
+    animation-timeline: view(), view();
+    animation-range: entry 0% entry 100%, contain 0% contain 100%;
+  }
+</style>
+<body>
+  <!-- scroll to bottom
+       top-box:
+         transform: none (after phase)
+         bg-color: #9f9 (at active-after boundary with inclusive endpoint)
+       bottom-box:
+         transform: 100px (at active-after boundary with inclusive endpoint)
+         bg-color: #99f (at active-before boundary with inclusive endpoint)
+  -->
+  <div id="scroller-1" class="scroller">
+    <div class="spacer"></div>
+    <div class="box"></div>
+    <div class="box"></div>
+  </div>
+  <!-- scroll to top
+       top-box:
+         transform: none (after phase)
+         bg-color: gray (at active-after boundary with exclusive endpoint)
+       bottom-box:
+         transform: none (at active-after boundary with exclusive endpoint)
+         bg-color: #99f (at active-before boundary with inclusive endpoint)
+  -->
+  <div id="scroller-2" class="scroller">
+    <div class="box"></div>
+    <div class="box"></div>
+    <div class="spacer"></div>
+  </div>
+  <br>
+  <!-- scroll to midpoint
+       top-box:
+         transform: none (after phase)
+         bg-color: gray (at active-after boundary with exclusive endpoint)
+       bottom-box:
+         transform: none (at active-after boundary with exclusive endpoint)
+         bg-color: #99f (at active-before boundary with inclusive endpoint)
+  -->
+  <div id="scroller-3" class="scroller">
+    <div class="spacer"></div>
+    <div class="box"></div>
+    <div class="box"></div>
+    <div class="spacer"></div>
+  </div>
+  <!-- scroll to bottom + reverse
+       top-box:
+         transform: none (before phase)
+         bg-color: gray (at active-before boundary with exclusive endpoint)
+       bottom-box:
+         transform: none (at active-before boundary with exclusive endpoint)
+         bg-color: #9f9 (at active-after boundary with inclusive endpoint)
+  -->
+  <div id="scroller-4" class="scroller">
+    <div class="spacer"></div>
+    <div class="box reverse"></div>
+    <div class="box reverse"></div>
+  </div>
+  <br>
+  <!-- scroll to top + reverse
+       top-box:
+         transform: none (before phase)
+         bg-color:  #99f (at active-before boundary with inclusive endpoint)
+       bottom-box:
+         transform: 25px (at active-before boundary with inclusive endpoint)
+         bg-color: #9f9 (at active-after boundary with inclusive endpoint)
+  -->
+  <div id="scroller-5" class="scroller">
+    <div class="box reverse"></div>
+    <div class="box reverse"></div>
+    <div class="spacer"></div>
+  </div>
+  <!-- scroll to midpoint + reverse
+       top-box:
+         transform: none (before phase)
+         bg-color: gray (at active-before boundary with exclusive endpoint)
+       bottom-box:
+         transform: none (at active-before boundary with exclusive endpoint)
+         bg-color: #9f9 (at active-before boundary with inclusive endpoint)
+  -->
+  <div id="scroller-6" class="scroller">
+    <div class="spacer"></div>
+    <div class="box reverse"></div>
+    <div class="box reverse"></div>
+    <div class="spacer"></div>
+  </div>
+</body>
+<script src="/common/reftest-wait.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script>
+  function scrollTo(scroller_id, relative_offset) {
+    const scroller = document.getElementById(scroller_id);
+    const max_scroll = scroller.scrollHeight - scroller.clientHeight;
+    scroller.scrollTop = relative_offset * max_scroll;
+  }
+
+  window.onload = async () => {
+    await waitForCompositorReady();
+    document.querySelectorAll('.reverse').forEach(elem => {
+      elem.getAnimations().forEach(anim => {
+        anim.reverse();
+      });
+    });
+    // Playing forward
+    scrollTo('scroller-1', 1);
+    scrollTo('scroller-2', 0);
+    scrollTo('scroller-3', 0.5);
+    // Playing reverse
+    scrollTo('scroller-4', 1);
+    scrollTo('scroller-5', 0);
+    scrollTo('scroller-6', 0.5);
+    await waitForNextFrame();
+    takeScreenshot();
+  };
+</script>
+</html>
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-1.html b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-1.html
new file mode 100644
index 00000000000..d8756769c51
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-1.html
@@ -0,0 +1,120 @@
+<!DOCTYPE html>
+<html id="top">
+<head>
+<meta charset="utf-8">
+<title>View timeline with sticky during entry/exit</title>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
+<script src="/scroll-animations/view-timelines/testcommon.js"></script>
+<style>
+
+#container {
+  height: 500px;
+  overflow: auto;
+}
+.space {
+  height: 550px;
+}
+
+/* top-sticky during entry */
+.stickycase1 {
+  background: yellow;
+  position: sticky;
+  top: 400px;
+  height: 200px;
+}
+
+#target {
+  position: relative;
+  top: 50px;
+  background: orange;
+  height: 100px;
+}
+
+</style>
+</head>
+<body>
+<div id="container">
+  <div class="space"></div>
+  <div class="space">
+    <div style="height: 150px"></div>
+    <div id="sticky" class="stickycase1">
+      <div id="target">Subject</div>
+    </div>
+  </div>
+  <div class="space"></div>
+</div>
+<script type="text/javascript">
+
+// The "cover" range would be [STATIC_START, STATIC_END] if we ignored
+// stickiness (i.e., considered only static position).
+//
+// STATIC_START = scroll distance to second spacer (50px)
+//              + position of sticky element within its container (150px)
+//              + position of target within sticky element (50px)
+// STATIC_END = STATIC_START
+//            + viewport height (500px)
+//            + target height (100px)
+const STATIC_START = 250;
+const STATIC_END = 850;
+
+// This is how far the sticky element can move upwards when bottom-stuck.
+const ROOM_ABOVE = 150;
+
+// This is how far the sticky element can move downwards when top-stuck.
+const ROOM_BELOW = 200;
+
+const TARGET_HEIGHT = 100;
+const VIEWPORT_HEIGHT = 500;
+
+promise_test(async t => {
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'cover', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'cover', offset: CSS.percent(100) },
+    startOffset: STATIC_START,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'contain', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'contain', offset: CSS.percent(100) },
+    startOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry', offset: CSS.percent(100) },
+    startOffset: STATIC_START,
+    endOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START,
+    endOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit', offset: CSS.percent(100) },
+    startOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+}, 'View timeline top-sticky during entry.');
+
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-2.html b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-2.html
new file mode 100644
index 00000000000..2d098dcbe30
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-2.html
@@ -0,0 +1,121 @@
+<!DOCTYPE html>
+<html id="top">
+<head>
+<meta charset="utf-8">
+<title>View timeline with sticky during entry/exit</title>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
+<script src="/scroll-animations/view-timelines/testcommon.js"></script>
+<style>
+
+#container {
+  height: 500px;
+  overflow: auto;
+}
+.space {
+  height: 550px;
+}
+
+/* bottom-sticky during entry and top-sticky during exit */
+.stickycase2 {
+  background: yellow;
+  position: sticky;
+  top: -100px;
+  bottom: -100px;
+  height: 200px;
+}
+
+#target {
+  position: relative;
+  top: 50px;
+  background: orange;
+  height: 100px;
+}
+
+</style>
+</head>
+<body>
+<div id="container">
+  <div class="space"></div>
+  <div class="space">
+    <div style="height: 150px"></div>
+    <div id="sticky" class="stickycase2">
+      <div id="target">Subject</div>
+    </div>
+  </div>
+  <div class="space"></div>
+</div>
+<script type="text/javascript">
+
+// The "cover" range would be [STATIC_START, STATIC_END] if we ignored
+// stickiness (i.e., considered only static position).
+//
+// STATIC_START = scroll distance to second spacer (50px)
+//              + position of sticky element within its container (150px)
+//              + position of target within sticky element (50px)
+// STATIC_END = STATIC_START
+//            + viewport height (500px)
+//            + target height (100px)
+const STATIC_START = 250;
+const STATIC_END = 850;
+
+// This is how far the sticky element can move upwards when bottom-stuck.
+const ROOM_ABOVE = 150;
+
+// This is how far the sticky element can move downwards when top-stuck.
+const ROOM_BELOW = 200;
+
+const TARGET_HEIGHT = 100;
+const VIEWPORT_HEIGHT = 500;
+
+promise_test(async t => {
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'cover', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'cover', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'contain', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'contain', offset: CSS.percent(100) },
+    startOffset: STATIC_START + TARGET_HEIGHT,
+    endOffset: STATIC_END - TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: STATIC_START + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: STATIC_START + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit', offset: CSS.percent(100) },
+    startOffset: STATIC_END - TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_END - TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+}, 'View timeline bottom-sticky during entry and top-sticky during exit.');
+
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-3.html b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-3.html
new file mode 100644
index 00000000000..c87dfc4dcb7
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-3.html
@@ -0,0 +1,121 @@
+<!DOCTYPE html>
+<html id="top">
+<head>
+<meta charset="utf-8">
+<title>View timeline with sticky during entry/exit</title>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
+<script src="/scroll-animations/view-timelines/testcommon.js"></script>
+<style>
+
+#container {
+  height: 500px;
+  overflow: auto;
+}
+.space {
+  height: 550px;
+}
+
+/* top-sticky and bottom-sticky during entry */
+.stickycase3 {
+  background: yellow;
+  position: sticky;
+  top: 375px;
+  bottom: -125px;
+  height: 200px;
+}
+
+#target {
+  position: relative;
+  top: 50px;
+  background: orange;
+  height: 100px;
+}
+
+</style>
+</head>
+<body>
+<div id="container">
+  <div class="space"></div>
+  <div class="space">
+    <div style="height: 150px"></div>
+    <div id="sticky" class="stickycase3">
+      <div id="target">Subject</div>
+    </div>
+  </div>
+  <div class="space"></div>
+</div>
+<script type="text/javascript">
+
+// The "cover" range would be [STATIC_START, STATIC_END] if we ignored
+// stickiness (i.e., considered only static position).
+//
+// STATIC_START = scroll distance to second spacer (50px)
+//              + position of sticky element within its container (150px)
+//              + position of target within sticky element (50px)
+// STATIC_END = STATIC_START
+//            + viewport height (500px)
+//            + target height (100px)
+const STATIC_START = 250;
+const STATIC_END = 850;
+
+// This is how far the sticky element can move upwards when bottom-stuck.
+const ROOM_ABOVE = 150;
+
+// This is how far the sticky element can move downwards when top-stuck.
+const ROOM_BELOW = 200;
+
+const TARGET_HEIGHT = 100;
+const VIEWPORT_HEIGHT = 500;
+
+promise_test(async t => {
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'cover', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'cover', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'contain', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'contain', offset: CSS.percent(100) },
+    startOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit', offset: CSS.percent(100) },
+    startOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+}, 'View timeline top-sticky and bottom-sticky during entry.');
+
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-4.html b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-4.html
new file mode 100644
index 00000000000..f6b02ffb2ee
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-4.html
@@ -0,0 +1,120 @@
+<!DOCTYPE html>
+<html id="top">
+<head>
+<meta charset="utf-8">
+<title>View timeline with sticky during entry/exit</title>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
+<script src="/scroll-animations/view-timelines/testcommon.js"></script>
+<style>
+
+#container {
+  height: 500px;
+  overflow: auto;
+}
+.space {
+  height: 550px;
+}
+
+/* top-sticky before entry */
+.stickycase4 {
+  background: yellow;
+  position: sticky;
+  top: 600px;
+  height: 200px;
+}
+
+#target {
+  position: relative;
+  top: 50px;
+  background: orange;
+  height: 100px;
+}
+
+</style>
+</head>
+<body>
+<div id="container">
+  <div class="space"></div>
+  <div class="space">
+    <div style="height: 150px"></div>
+    <div id="sticky" class="stickycase4">
+      <div id="target">Subject</div>
+    </div>
+  </div>
+  <div class="space"></div>
+</div>
+<script type="text/javascript">
+
+// The "cover" range would be [STATIC_START, STATIC_END] if we ignored
+// stickiness (i.e., considered only static position).
+//
+// STATIC_START = scroll distance to second spacer (50px)
+//              + position of sticky element within its container (150px)
+//              + position of target within sticky element (50px)
+// STATIC_END = STATIC_START
+//            + viewport height (500px)
+//            + target height (100px)
+const STATIC_START = 250;
+const STATIC_END = 850;
+
+// This is how far the sticky element can move upwards when bottom-stuck.
+const ROOM_ABOVE = 150;
+
+// This is how far the sticky element can move downwards when top-stuck.
+const ROOM_BELOW = 200;
+
+const TARGET_HEIGHT = 100;
+const VIEWPORT_HEIGHT = 500;
+
+promise_test(async t => {
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'cover', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'cover', offset: CSS.percent(100) },
+    startOffset: STATIC_START + ROOM_BELOW,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'contain', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'contain', offset: CSS.percent(100) },
+    startOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry', offset: CSS.percent(100) },
+    startOffset: STATIC_START + ROOM_BELOW,
+    endOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START + ROOM_BELOW,
+    endOffset: STATIC_START + ROOM_BELOW + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit', offset: CSS.percent(100) },
+    startOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_END + ROOM_BELOW - TARGET_HEIGHT,
+    endOffset: STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+}, 'View timeline top-sticky before entry.');
+
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-5.html b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-5.html
new file mode 100644
index 00000000000..380c01297e1
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-5.html
@@ -0,0 +1,121 @@
+<!DOCTYPE html>
+<html id="top">
+<head>
+<meta charset="utf-8">
+<title>View timeline with sticky during entry/exit</title>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
+<script src="/scroll-animations/view-timelines/testcommon.js"></script>
+<style>
+
+#container {
+  height: 500px;
+  overflow: auto;
+}
+.space {
+  height: 550px;
+}
+
+/* bottom-sticky before entry and top-sticky after exit */
+.stickycase5 {
+  background: yellow;
+  position: sticky;
+  top: -200px;
+  bottom: -200px;
+  height: 200px;
+}
+
+#target {
+  position: relative;
+  top: 50px;
+  background: orange;
+  height: 100px;
+}
+
+</style>
+</head>
+<body>
+<div id="container">
+  <div class="space"></div>
+  <div class="space">
+    <div style="height: 150px"></div>
+    <div id="sticky" class="stickycase5">
+      <div id="target">Subject</div>
+    </div>
+  </div>
+  <div class="space"></div>
+</div>
+<script type="text/javascript">
+
+// The "cover" range would be [STATIC_START, STATIC_END] if we ignored
+// stickiness (i.e., considered only static position).
+//
+// STATIC_START = scroll distance to second spacer (50px)
+//              + position of sticky element within its container (150px)
+//              + position of target within sticky element (50px)
+// STATIC_END = STATIC_START
+//            + viewport height (500px)
+//            + target height (100px)
+const STATIC_START = 250;
+const STATIC_END = 850;
+
+// This is how far the sticky element can move upwards when bottom-stuck.
+const ROOM_ABOVE = 150;
+
+// This is how far the sticky element can move downwards when top-stuck.
+const ROOM_BELOW = 200;
+
+const TARGET_HEIGHT = 100;
+const VIEWPORT_HEIGHT = 500;
+
+promise_test(async t => {
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'cover', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'cover', offset: CSS.percent(100) },
+    startOffset: STATIC_START,
+    endOffset: STATIC_END,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'contain', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'contain', offset: CSS.percent(100) },
+    startOffset: STATIC_START + TARGET_HEIGHT,
+    endOffset: STATIC_END - TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry', offset: CSS.percent(100) },
+    startOffset: STATIC_START,
+    endOffset: STATIC_START + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START,
+    endOffset: STATIC_START + TARGET_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit', offset: CSS.percent(100) },
+    startOffset: STATIC_END - TARGET_HEIGHT,
+    endOffset: STATIC_END,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_END - TARGET_HEIGHT,
+    endOffset: STATIC_END,
+    axis: 'block'
+  });
+}, 'View timeline bottom-sticky before entry and top-sticky after exit.');
+
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-6.html b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-6.html
new file mode 100644
index 00000000000..94f0abc9b1e
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-6.html
@@ -0,0 +1,127 @@
+<!DOCTYPE html>
+<html id="top">
+<head>
+<meta charset="utf-8">
+<title>View timeline with sticky during entry/exit</title>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
+<script src="/scroll-animations/view-timelines/testcommon.js"></script>
+<style>
+
+#container {
+  height: 500px;
+  overflow: auto;
+}
+.space {
+  height: 550px;
+}
+
+/* target > viewport, bottom-sticky during entry and top-sticky during exit */
+.stickycase6 {
+  background: yellow;
+  position: sticky;
+  top: -200px;
+  bottom: -200px;
+  height: 700px;
+}
+
+#target {
+  position: relative;
+  top: 50px;
+  background: orange;
+  height: 600px;
+}
+
+.space:has(.stickycase6),
+.space:has(.stickycase7) {
+  height: 1050px;
+}
+
+</style>
+</head>
+<body>
+<div id="container">
+  <div class="space"></div>
+  <div class="space">
+    <div style="height: 150px"></div>
+    <div id="sticky" class="stickycase6">
+      <div id="target">Subject</div>
+    </div>
+  </div>
+  <div class="space"></div>
+</div>
+<script type="text/javascript">
+
+// The "cover" range would be [STATIC_START, STATIC_END] if we ignored
+// stickiness (i.e., considered only static position).
+//
+// STATIC_START = scroll distance to second spacer (50px)
+//              + position of sticky element within its container (150px)
+//              + position of target within sticky element (50px)
+// STATIC_END = STATIC_START
+//            + viewport height (500px)
+//            + target height (100px)
+const STATIC_START = 250;
+const BIG_TARGET_STATIC_END = 1350;
+
+// This is how far the sticky element can move upwards when bottom-stuck.
+const ROOM_ABOVE = 150;
+
+// This is how far the sticky element can move downwards when top-stuck.
+const ROOM_BELOW = 200;
+
+const BIG_TARGET_HEIGHT = 600;
+const VIEWPORT_HEIGHT = 500;
+
+promise_test(async t => {
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'cover', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'cover', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: BIG_TARGET_STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'contain', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'contain', offset: CSS.percent(100) },
+    startOffset: STATIC_START + VIEWPORT_HEIGHT,
+    endOffset: BIG_TARGET_STATIC_END - VIEWPORT_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: STATIC_START + VIEWPORT_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: BIG_TARGET_STATIC_END - VIEWPORT_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit', offset: CSS.percent(100) },
+    startOffset: BIG_TARGET_STATIC_END - VIEWPORT_HEIGHT,
+    endOffset: BIG_TARGET_STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START + VIEWPORT_HEIGHT,
+    endOffset: BIG_TARGET_STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+}, 'View timeline target > viewport, ' +
+   'bottom-sticky during entry and top-sticky during exit.');
+
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-7.html b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-7.html
new file mode 100644
index 00000000000..83115249fae
--- /dev/null
+++ b/tests/wpt/tests/scroll-animations/view-timelines/sticky/view-timeline-sticky-offscreen-7.html
@@ -0,0 +1,128 @@
+<!DOCTYPE html>
+<html id="top">
+<head>
+<meta charset="utf-8">
+<title>View timeline with sticky during entry/exit</title>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<script src="/scroll-animations/scroll-timelines/testcommon.js"></script>
+<script src="/scroll-animations/view-timelines/testcommon.js"></script>
+<style>
+
+#container {
+  height: 500px;
+  overflow: auto;
+}
+.space {
+  height: 550px;
+}
+
+/* target > viewport, bottom-sticky and top-sticky during contain */
+.stickycase7 {
+  background: yellow;
+  position: sticky;
+  top: -100px;
+  bottom: -100px;
+  height: 700px;
+}
+
+#target {
+  position: relative;
+  top: 50px;
+  background: orange;
+  height: 600px;
+}
+
+.space:has(.stickycase6),
+.space:has(.stickycase7) {
+  height: 1050px;
+}
+
+</style>
+</head>
+<body>
+<div id="container">
+  <div class="space"></div>
+  <div class="space">
+    <div style="height: 150px"></div>
+    <div id="sticky" class="stickycase7">
+      <div id="target">Subject</div>
+    </div>
+  </div>
+  <div class="space"></div>
+</div>
+<script type="text/javascript">
+
+// The "cover" range would be [STATIC_START, STATIC_END] if we ignored
+// stickiness (i.e., considered only static position).
+//
+// STATIC_START = scroll distance to second spacer (50px)
+//              + position of sticky element within its container (150px)
+//              + position of target within sticky element (50px)
+// STATIC_END = STATIC_START
+//            + viewport height (500px)
+//            + target height (100px)
+const STATIC_START = 250;
+const BIG_TARGET_STATIC_END = 1350;
+
+// This is how far the sticky element can move upwards when bottom-stuck.
+const ROOM_ABOVE = 150;
+
+// This is how far the sticky element can move downwards when top-stuck.
+const ROOM_BELOW = 200;
+
+const BIG_TARGET_HEIGHT = 600;
+const VIEWPORT_HEIGHT = 500;
+
+promise_test(async t => {
+  sticky.className = "stickycase7";
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'cover', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'cover', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: BIG_TARGET_STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'contain', offset: CSS.percent(0) } ,
+    rangeEnd: { rangeName: 'contain', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE + VIEWPORT_HEIGHT,
+    endOffset: BIG_TARGET_STATIC_END + ROOM_BELOW - VIEWPORT_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: STATIC_START - ROOM_ABOVE + VIEWPORT_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart: { rangeName: 'entry-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'entry-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE,
+    endOffset: BIG_TARGET_STATIC_END + ROOM_BELOW - VIEWPORT_HEIGHT,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit', offset: CSS.percent(100) },
+    startOffset: BIG_TARGET_STATIC_END + ROOM_BELOW - VIEWPORT_HEIGHT,
+    endOffset: BIG_TARGET_STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+  await runTimelineRangeTest(t, {
+    rangeStart:  { rangeName: 'exit-crossing', offset: CSS.percent(0) },
+    rangeEnd: { rangeName: 'exit-crossing', offset: CSS.percent(100) },
+    startOffset: STATIC_START - ROOM_ABOVE + VIEWPORT_HEIGHT,
+    endOffset: BIG_TARGET_STATIC_END + ROOM_BELOW,
+    axis: 'block'
+  });
+}, 'View timeline target > viewport, ' +
+   'bottom-sticky and top-sticky during contain.');
+
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/service-workers/service-worker/resources/fetch-access-control.py b/tests/wpt/tests/service-workers/service-worker/resources/fetch-access-control.py
index 446af87b249..380a7d62225 100644
--- a/tests/wpt/tests/service-workers/service-worker/resources/fetch-access-control.py
+++ b/tests/wpt/tests/service-workers/service-worker/resources/fetch-access-control.py
@@ -35,8 +35,13 @@ def main(request, response):
         return headers, body
 
     if b"VIDEO" in request.GET:
-        headers.append((b"Content-Type", b"video/ogg"))
-        body = open(os.path.join(request.doc_root, u"media", u"movie_5.ogv"), "rb").read()
+        if b"mp4" in request.GET:
+          headers.append((b"Content-Type", b"video/mp4"))
+          body = open(os.path.join(request.doc_root, u"media", u"movie_5.mp4"), "rb").read()
+        else:
+          headers.append((b"Content-Type", b"video/ogg"))
+          body = open(os.path.join(request.doc_root, u"media", u"movie_5.ogv"), "rb").read()
+
         length = len(body)
         # If "PartialContent" is specified, the requestor wants to test range
         # requests. For the initial request, respond with "206 Partial Content"
diff --git a/tests/wpt/tests/speculation-rules/prerender/resources/utils.js b/tests/wpt/tests/speculation-rules/prerender/resources/utils.js
index f012d2d0e41..311d37f0a01 100644
--- a/tests/wpt/tests/speculation-rules/prerender/resources/utils.js
+++ b/tests/wpt/tests/speculation-rules/prerender/resources/utils.js
@@ -340,14 +340,9 @@ function test_prerender_defer(fn, label) {
  * @param {RemoteContextConfig|object} extraConfig
  * @returns {Promise<RemoteContextWrapper>}
  */
-async function addPrerenderRC(referrerRemoteContext, extraConfig) {
-  let savedURL;
-  const prerenderedRC = await referrerRemoteContext.helper.createContext({
+function addPrerenderRC(referrerRemoteContext, extraConfig) {
+  return referrerRemoteContext.helper.createContext({
     executorCreator(url) {
-      // Save the URL which the remote context helper framework assembled for
-      // us, so that we can attach it to the returned `RemoteContextWrapper`.
-      savedURL = url;
-
       return referrerRemoteContext.executeScript(url => {
         const script = document.createElement("script");
         script.type = "speculationrules";
@@ -363,9 +358,6 @@ async function addPrerenderRC(referrerRemoteContext, extraConfig) {
       }, [url]);
     }, extraConfig
   });
-
-  prerenderedRC.url = savedURL;
-  return prerenderedRC;
 }
 
 /**
diff --git a/tests/wpt/tests/streams/readable-streams/bad-strategies.any.js b/tests/wpt/tests/streams/readable-streams/bad-strategies.any.js
index 521fbffe3ab..409c63b8177 100644
--- a/tests/wpt/tests/streams/readable-streams/bad-strategies.any.js
+++ b/tests/wpt/tests/streams/readable-streams/bad-strategies.any.js
@@ -149,7 +149,9 @@ promise_test(() => {
       }
     );
 
-    promises.push(rs.getReader().closed.catch(e => {
+    promises.push(rs.getReader().closed.then(() => {
+      assert_unreached('closed didn\'t throw');
+    }, e => {
       assert_equals(e, theError, 'closed should reject with the error for ' + size);
     }));
   }
@@ -157,3 +159,40 @@ promise_test(() => {
   return Promise.all(promises);
 
 }, 'Readable stream: invalid strategy.size return value');
+
+promise_test(() => {
+
+  const promises = [];
+  for (const size of [NaN, -Infinity, Infinity, -1]) {
+    let theError;
+    const rs = new ReadableStream(
+      {
+        pull(c) {
+          try {
+            c.enqueue('hi');
+            assert_unreached('enqueue didn\'t throw');
+          } catch (error) {
+            assert_equals(error.name, 'RangeError', 'enqueue should throw a RangeError for ' + size);
+            theError = error;
+          }
+        }
+      },
+      {
+        size() {
+          return size;
+        },
+        highWaterMark: 5
+      }
+    );
+
+    promises.push(rs.getReader().closed.then(() => {
+      assert_unreached('closed didn\'t throw');
+    }, e => {
+      assert_equals(e, theError, 'closed should reject with the error for ' + size);
+    }));
+  }
+
+  return Promise.all(promises);
+
+}, 'Readable stream: invalid strategy.size return value when pulling');
+
diff --git a/tests/wpt/tests/svg/types/scripted/SVGLength-px-with-context.html b/tests/wpt/tests/svg/types/scripted/SVGLength-px-with-context.html
index 067948d5454..b5c2149b692 100644
--- a/tests/wpt/tests/svg/types/scripted/SVGLength-px-with-context.html
+++ b/tests/wpt/tests/svg/types/scripted/SVGLength-px-with-context.html
@@ -5,14 +5,14 @@
 <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
 <p></p>
 <script>
-var cssPixelsPerInch = 96;
+const cssPixelsPerInch = 96;
 setup(function() {
   // Setup a real SVG document, so SVGLength can resolve relative units.
-  var svgElement = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+  let svgElement = document.createElementNS("http://www.w3.org/2000/svg", "svg");
   svgElement.setAttribute("width", "150");
   svgElement.setAttribute("height", "50");
   svgElement.setAttribute("viewBox", "0 0 150 50");
-  var rectElement = document.createElementNS("http://www.w3.org/2000/svg", "rect");
+  let rectElement = document.createElementNS("http://www.w3.org/2000/svg", "rect");
   rectElement.setAttribute("style", "visibility: hidden; font-size: 12px; font-family: Ahem;");
   svgElement.appendChild(rectElement);
   document.querySelector("p").appendChild(svgElement);
@@ -75,6 +75,17 @@ test(function() {
   assert_equals(length.unitType, SVGLength.SVG_LENGTHTYPE_EXS);
 }, document.title + " , exs");
 
+test(function() {
+  length.valueAsString = "2px";
+  length.convertToSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_EXS);
+  document.documentElement.setAttribute("style", "writing-mode: vertical-rl;");
+  // flush layout
+  document.body.offsetWidth;
+  document.documentElement.removeAttribute("style");
+  // value should be correct without flushing layout
+  assert_approx_equals(length.value, 2.0, 0.1);
+}, document.title + ", exs (check style flush)");
+
 test(function() {
   length.valueAsString = "48px";
   length.convertToSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_CM);
@@ -124,4 +135,4 @@ test(function() {
   assert_equals(length.value, 16);
   assert_equals(length.unitType, SVGLength.SVG_LENGTHTYPE_PC);
 }, document.title + ", pc");
-</script>
\ No newline at end of file
+</script>
diff --git a/tests/wpt/tests/svg/types/scripted/SVGLength-px.html b/tests/wpt/tests/svg/types/scripted/SVGLength-px.html
index 321be5912b8..25ce286197a 100644
--- a/tests/wpt/tests/svg/types/scripted/SVGLength-px.html
+++ b/tests/wpt/tests/svg/types/scripted/SVGLength-px.html
@@ -106,6 +106,9 @@ test(function() {
   referenceValue = 48 / 4;
   assert_equals(length.valueAsString, referenceValue + "mm");
   assert_approx_equals(length.valueInSpecifiedUnits, referenceValue, 0.01);
+  length.value = valueInPx("12q");
+  referenceValue = 3;
+  assert_approx_equals(length.valueInSpecifiedUnits, referenceValue, 0.01);
 }, document.title + ", q");
 
 test(function() {
diff --git a/tests/wpt/tests/tools/manifest/commands.json b/tests/wpt/tests/tools/manifest/commands.json
index 769675e0ee4..cef6d22473b 100644
--- a/tests/wpt/tests/tools/manifest/commands.json
+++ b/tests/wpt/tests/tools/manifest/commands.json
@@ -19,5 +19,12 @@
     "parser": "create_parser",
     "help": "Print test paths given a set of test ids",
     "virtualenv": false
+  },
+  "spec": {
+    "path": "spec.py",
+    "script": "run",
+    "parser": "create_parser",
+    "help": "Update the SPEC_MANIFEST.json file",
+    "virtualenv": false
   }
 }
diff --git a/tests/wpt/tests/tools/manifest/item.py b/tests/wpt/tests/tools/manifest/item.py
index 500ca109a74..86f7bd6020b 100644
--- a/tests/wpt/tests/tools/manifest/item.py
+++ b/tests/wpt/tests/tools/manifest/item.py
@@ -340,3 +340,37 @@ class SupportFile(ManifestItem):
     @property
     def id(self) -> Text:
         return self.path
+
+
+class SpecItem(ManifestItem):
+    __slots__ = ("specs")
+
+    item_type = "spec"
+
+    def __init__(self,
+                 tests_root: Text,
+                 path: Text,
+                 specs: List[Text]
+                 ) -> None:
+        super().__init__(tests_root, path)
+        self.specs = specs
+
+    @property
+    def id(self) -> Text:
+        return self.path
+
+    def to_json(self) -> Tuple[Optional[Text], Dict[Text, Any]]:
+        rv: Tuple[Optional[Text], Dict[Any, Any]] = (None, {})
+        for i in range(len(self.specs)):
+            spec_key = f"spec_link{i+1}"
+            rv[-1][spec_key] = self.specs[i]
+        return rv
+
+    @classmethod
+    def from_json(cls,
+                  manifest: "Manifest",
+                  path: Text,
+                  obj: Any
+                  ) -> "ManifestItem":
+        """Not properly implemented and is not used."""
+        return cls("/", "", [])
diff --git a/tests/wpt/tests/tools/manifest/manifest.py b/tests/wpt/tests/tools/manifest/manifest.py
index f602727cb09..0b00c71ac51 100644
--- a/tests/wpt/tests/tools/manifest/manifest.py
+++ b/tests/wpt/tests/tools/manifest/manifest.py
@@ -4,7 +4,7 @@ from atomicwrites import atomic_write
 from copy import deepcopy
 from logging import Logger
 from multiprocessing import Pool, cpu_count
-from typing import (Any, Container, Dict, IO, Iterator, Iterable, Optional, Set, Text, Tuple, Type,
+from typing import (Any, Callable, Container, Dict, IO, Iterator, Iterable, Optional, Set, Text, Tuple, Type,
                     Union)
 
 from . import jsonlib
@@ -15,6 +15,7 @@ from .item import (ConformanceCheckerTest,
                    ManualTest,
                    PrintRefTest,
                    RefTest,
+                   SpecItem,
                    SupportFile,
                    TestharnessTest,
                    VisualTest,
@@ -48,16 +49,28 @@ item_classes: Dict[Text, Type[ManifestItem]] = {"testharness": TestharnessTest,
                                                 "wdspec": WebDriverSpecTest,
                                                 "conformancechecker": ConformanceCheckerTest,
                                                 "visual": VisualTest,
+                                                "spec": SpecItem,
                                                 "support": SupportFile}
 
 
-def compute_manifest_items(source_file: SourceFile) -> Tuple[Tuple[Text, ...], Text, Set[ManifestItem], Text]:
+def compute_manifest_items(source_file: SourceFile) -> Optional[Tuple[Tuple[Text, ...], Text, Set[ManifestItem], Text]]:
     rel_path_parts = source_file.rel_path_parts
     new_type, manifest_items = source_file.manifest_items()
     file_hash = source_file.hash
     return rel_path_parts, new_type, set(manifest_items), file_hash
 
 
+def compute_manifest_spec_items(source_file: SourceFile) -> Optional[Tuple[Tuple[Text, ...], Text, Set[ManifestItem], Text]]:
+    spec_tuple = source_file.manifest_spec_items()
+    if not spec_tuple:
+        return None
+
+    new_type, manifest_items = spec_tuple
+    rel_path_parts = source_file.rel_path_parts
+    file_hash = source_file.hash
+    return rel_path_parts, new_type, set(manifest_items), file_hash
+
+
 ManifestDataType = Dict[Any, TypeData]
 
 
@@ -127,7 +140,8 @@ class Manifest:
                 if path[:tpath_len] == tpath:
                     yield from tests
 
-    def update(self, tree: Iterable[Tuple[Text, Optional[Text], bool]], parallel: bool = True) -> bool:
+    def update(self, tree: Iterable[Tuple[Text, Optional[Text], bool]], parallel: bool = True,
+               update_func: Callable[..., Any] = compute_manifest_items) -> bool:
         """Update the manifest given an iterable of items that make up the updated manifest.
 
         The iterable must either generate tuples of the form (SourceFile, True) for paths
@@ -189,7 +203,6 @@ class Manifest:
             logger.debug("Computing manifest update for %s items" % len(to_update))
             changed = True
 
-
         # 25 items was derived experimentally (2020-01) to be approximately the
         # point at which it is quicker to create a Pool and parallelize update.
         pool = None
@@ -211,16 +224,18 @@ class Manifest:
             chunksize = max(1, len(to_update) // 10000)
             logger.debug("Doing a multiprocessed update. CPU count: %s, "
                 "processes: %s, chunksize: %s" % (cpu_count(), processes, chunksize))
-            results: Iterator[Tuple[Tuple[Text, ...],
+            results: Iterator[Optional[Tuple[Tuple[Text, ...],
                                     Text,
-                                    Set[ManifestItem], Text]] = pool.imap_unordered(
-                                        compute_manifest_items,
+                                    Set[ManifestItem], Text]]] = pool.imap_unordered(
+                                        update_func,
                                         to_update,
                                         chunksize=chunksize)
         else:
-            results = map(compute_manifest_items, to_update)
+            results = map(update_func, to_update)
 
         for result in results:
+            if not result:
+                continue
             rel_path_parts, new_type, manifest_items, file_hash = result
             data[new_type][rel_path_parts] = manifest_items
             data[new_type].hashes[rel_path_parts] = file_hash
diff --git a/tests/wpt/tests/tools/manifest/sourcefile.py b/tests/wpt/tests/tools/manifest/sourcefile.py
index 386833722e7..cf0bbf334b7 100644
--- a/tests/wpt/tests/tools/manifest/sourcefile.py
+++ b/tests/wpt/tests/tools/manifest/sourcefile.py
@@ -22,6 +22,7 @@ from .item import (ConformanceCheckerTest,
                    ManualTest,
                    PrintRefTest,
                    RefTest,
+                   SpecItem,
                    SupportFile,
                    TestharnessTest,
                    VisualTest,
@@ -1058,3 +1059,15 @@ class SourceFile:
             del self.__dict__["__cached_properties__"]
 
         return rv
+
+    def manifest_spec_items(self) -> Optional[Tuple[Text, List[ManifestItem]]]:
+        specs = list(self.spec_links)
+        if not specs:
+            return None
+        rv: Tuple[Text, List[ManifestItem]] = (SpecItem.item_type, [
+            SpecItem(
+                self.tests_root,
+                self.rel_path,
+                specs
+            )])
+        return rv
diff --git a/tests/wpt/tests/tools/manifest/spec.py b/tests/wpt/tests/tools/manifest/spec.py
new file mode 100644
index 00000000000..5148fceb3e6
--- /dev/null
+++ b/tests/wpt/tests/tools/manifest/spec.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python3
+import argparse
+import os
+from typing import Any, Optional, Text
+
+from . import vcs
+from .manifest import compute_manifest_spec_items, InvalidCacheError, Manifest, write
+from .log import get_logger, enable_debug_logging
+
+
+here = os.path.dirname(__file__)
+
+wpt_root = os.path.abspath(os.path.join(here, os.pardir, os.pardir))
+
+logger = get_logger()
+
+
+def update_spec(tests_root: Text,
+                manifest_path: Text,
+                url_base: Text,
+                cache_root: Optional[Text] = None,
+                working_copy: bool = True,
+                parallel: bool = True
+                ) -> None:
+
+    manifest = Manifest(tests_root, url_base)
+
+    logger.info("Updating SPEC_MANIFEST")
+    try:
+        tree = vcs.get_tree(tests_root, manifest, manifest_path, cache_root,
+                            working_copy, True)
+        changed = manifest.update(tree, parallel, compute_manifest_spec_items)
+    except InvalidCacheError:
+        logger.error("Manifest cache in spec.py was invalid.")
+        return
+
+    if changed:
+        write(manifest, manifest_path)
+    tree.dump_caches()
+
+
+def update_from_cli(**kwargs: Any) -> None:
+    tests_root = kwargs["tests_root"]
+    path = kwargs["path"]
+    assert tests_root is not None
+
+    update_spec(tests_root,
+                path,
+                kwargs["url_base"],
+                cache_root=kwargs["cache_root"],
+                parallel=kwargs["parallel"])
+
+
+def abs_path(path: str) -> str:
+    return os.path.abspath(os.path.expanduser(path))
+
+
+def create_parser() -> argparse.ArgumentParser:
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "-v", "--verbose", dest="verbose", action="store_true", default=False,
+        help="Turn on verbose logging")
+    parser.add_argument(
+        "-p", "--path", type=abs_path, help="Path to manifest file.")
+    parser.add_argument(
+        "--tests-root", type=abs_path, default=wpt_root, help="Path to root of tests.")
+    parser.add_argument(
+        "--url-base", action="store", default="/",
+        help="Base url to use as the mount point for tests in this manifest.")
+    parser.add_argument(
+        "--cache-root", action="store", default=os.path.join(wpt_root, ".wptcache"),
+        help="Path in which to store any caches (default <tests_root>/.wptcache/)")
+    parser.add_argument(
+        "--no-parallel", dest="parallel", action="store_false", default=True,
+        help="Do not parallelize building the manifest")
+    return parser
+
+
+def run(*args: Any, **kwargs: Any) -> None:
+    if kwargs["path"] is None:
+        kwargs["path"] = os.path.join(kwargs["tests_root"], "SPEC_MANIFEST.json")
+    if kwargs["verbose"]:
+        enable_debug_logging()
+    update_from_cli(**kwargs)
diff --git a/tests/wpt/tests/tools/manifest/tests/test_manifest.py b/tests/wpt/tests/tools/manifest/tests/test_manifest.py
index 91b39f213a8..fc2314b8356 100644
--- a/tests/wpt/tests/tools/manifest/tests/test_manifest.py
+++ b/tests/wpt/tests/tools/manifest/tests/test_manifest.py
@@ -308,3 +308,30 @@ def test_update_from_json_modified():
         'url_base': '/',
         'version': 8
     }
+
+def test_manifest_spec_to_json():
+    m = manifest.Manifest("")
+
+    path = "a" + os.path.sep + "b"
+    hash = "0"*40
+    rel_path_parts = tuple(path.split(os.path.sep))
+    s = mock.Mock(rel_path=path,
+                  rel_path_parts=rel_path_parts,
+                  hash=hash)
+    spec = item.SpecItem("/foobar", path, ["specA"])
+    s.manifest_spec_items = mock.Mock(return_value=(item.SpecItem.item_type, [spec]))
+
+    tree, sourcefile_mock = tree_and_sourcefile_mocks([(s, None, True)])
+    with mock.patch("tools.manifest.manifest.SourceFile", side_effect=sourcefile_mock):
+        assert m.update(tree, True, manifest.compute_manifest_spec_items) is True
+
+    assert m.to_json() == {
+        'version': 8,
+        'url_base': '/',
+        'items': {
+            'spec': {'a': {'b': [
+                '0000000000000000000000000000000000000000',
+                (None, {'spec_link1': 'specA'})
+            ]}},
+        }
+    }
diff --git a/tests/wpt/tests/tools/manifest/tests/test_sourcefile.py b/tests/wpt/tests/tools/manifest/tests/test_sourcefile.py
index c0b281d244c..d3411084f3c 100644
--- a/tests/wpt/tests/tools/manifest/tests/test_sourcefile.py
+++ b/tests/wpt/tests/tools/manifest/tests/test_sourcefile.py
@@ -808,6 +808,21 @@ def test_spec_links_whitespace(url):
     assert s.spec_links == {"http://example.com/"}
 
 
+@pytest.mark.parametrize("input,expected", [
+    (b"""<link rel="help" title="Intel" href="foo">\n""", ["foo"]),
+    (b"""<link rel=help title="Intel" href="foo">\n""", ["foo"]),
+    (b"""<link  rel=help  href="foo" >\n""", ["foo"]),
+    (b"""<link rel="author" href="foo">\n""", []),
+    (b"""<link href="foo">\n""", []),
+    (b"""<link rel="help" href="foo">\n<link rel="help" href="bar">\n""", ["foo", "bar"]),
+    (b"""<link rel="help" href="foo">\n<script>\n""", ["foo"]),
+    (b"""random\n""", []),
+])
+def test_spec_links_complex(input, expected):
+    s = create("foo/test.html", input)
+    assert s.spec_links == set(expected)
+
+
 def test_url_base():
     contents = b"""// META: global=window,worker
 // META: variant=
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/client.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/client.py
index 9bb03b34f96..c0505dde1d1 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/client.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/client.py
@@ -134,15 +134,20 @@ class BidiSession:
     async def __aexit__(self, *args: Any) -> None:
         await self.end()
 
+    async def start_transport(self,
+                              loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
+        if self.transport is None:
+            if loop is None:
+                loop = get_running_loop()
+
+            self.transport = Transport(self.websocket_url, self.on_message, loop=loop)
+            await self.transport.start()
+
     async def start(self,
                     loop: Optional[asyncio.AbstractEventLoop] = None) -> None:
         """Connect to the WebDriver BiDi remote via WebSockets"""
 
-        if loop is None:
-            loop = get_running_loop()
-
-        self.transport = Transport(self.websocket_url, self.on_message, loop=loop)
-        await self.transport.start()
+        await self.start_transport(loop)
 
         if self.session_id is None:
             self.session_id, self.capabilities = await self.session.new(  # type: ignore
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/error.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/error.py
index 21c9f720a8e..b681660f1a8 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/error.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/error.py
@@ -35,6 +35,10 @@ class InvalidArgumentException(BidiException):
     error_code = "invalid argument"
 
 
+class InvalidSessionIDError(BidiException):
+    error_code = "invalid session id"
+
+
 class MoveTargetOutOfBoundsException(BidiException):
     error_code = "move target out of bounds"
 
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/_module.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/_module.py
index e28a83584a8..060010b2a33 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/_module.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/_module.py
@@ -1,3 +1,4 @@
+import asyncio
 import functools
 from typing import (
     Any,
@@ -73,7 +74,10 @@ class command:
 
             if result_fn is not None and not raw_result:
                 # Convert the result if we have a conversion function defined
-                result = result_fn(self, result)
+                if asyncio.iscoroutinefunction(result_fn):
+                    result = await result_fn(self, result)
+                else:
+                    result = result_fn(self, result)
             return result
 
         # Overwrite the method on the owner class with the wrapper
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/browsing_context.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/browsing_context.py
index f2abb4764e2..a9b8d3f7682 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/browsing_context.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/browsing_context.py
@@ -127,3 +127,7 @@ class BrowsingContext(BidiModule):
     def _print(self, result: Mapping[str, Any]) -> Any:
         assert result["data"] is not None
         return result["data"]
+
+    @command
+    def set_viewport(self, context: str, viewport: Optional[Mapping[str, Any]] = None) -> Mapping[str, Any]:
+        return {"context": context, "viewport": viewport}
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/session.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/session.py
index cdcef11b94f..fe1c0385105 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/session.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/modules/session.py
@@ -4,6 +4,17 @@ from ._module import BidiModule, command
 
 
 class Session(BidiModule):
+    @command
+    def end(self) -> Mapping[str, Any]:
+        return {}
+
+    @end.result
+    async def _end(self, result: Mapping[str, Any]) -> Any:
+        if self.session.transport:
+            await self.session.transport.wait_closed()
+
+        return result
+
     @command
     def new(self, capabilities: Mapping[str, Any]) -> Mapping[str, Mapping[str, Any]]:
         params: MutableMapping[str, Any] = {}
@@ -14,6 +25,10 @@ class Session(BidiModule):
     def _new(self, result: Mapping[str, Any]) -> Any:
         return result.get("sessionId"), result.get("capabilities", {})
 
+    @command
+    def status(self) -> Mapping[str, Any]:
+        return {}
+
     @command
     def subscribe(self,
                   events: List[str],
diff --git a/tests/wpt/tests/tools/webdriver/webdriver/bidi/transport.py b/tests/wpt/tests/tools/webdriver/webdriver/bidi/transport.py
index 2d5d8ee9224..d61ebaddea7 100644
--- a/tests/wpt/tests/tools/webdriver/webdriver/bidi/transport.py
+++ b/tests/wpt/tests/tools/webdriver/webdriver/bidi/transport.py
@@ -74,3 +74,7 @@ class Transport:
             if not isinstance(msg, str):
                 raise ValueError("Got a binary message")
             await self.handle(msg)
+
+    async def wait_closed(self) -> None:
+        if self.connection and not self.connection.closed:
+            await self.connection.wait_closed()
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
index 7065d07a647..bf69e8f6083 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
@@ -69,7 +69,8 @@ def browser_kwargs(logger, test_type, run_info_data, config, **kwargs):
             "install_fonts": kwargs["install_fonts"],
             "tests_root": config.doc_root,
             "specialpowers_path": kwargs["specialpowers_path"],
-            "debug_test": kwargs["debug_test"]}
+            "debug_test": kwargs["debug_test"],
+            "env_extras": dict([x.split('=') for x in kwargs.get("env", [])])}
 
 
 def executor_kwargs(logger, test_type, test_environment, run_info_data,
@@ -98,8 +99,10 @@ def env_options():
             "supports_debugger": True}
 
 
-def get_environ(chaos_mode_flags):
+def get_environ(chaos_mode_flags, env_extras=None):
     env = {}
+    if env_extras is not None:
+        env.update(env_extras)
     env["MOZ_CRASHREPORTER"] = "1"
     env["MOZ_CRASHREPORTER_SHUTDOWN"] = "1"
     env["MOZ_DISABLE_NONLOCAL_CONNECTIONS"] = "1"
@@ -191,6 +194,7 @@ class FirefoxAndroidBrowser(Browser):
         self.marionette_port = None
         self.profile = None
         self.runner = None
+        self.env_extras = kwargs["env_extras"]
         self._settings = {}
 
     def settings(self, test):
@@ -226,7 +230,7 @@ class FirefoxAndroidBrowser(Browser):
                                           [cmd_arg("marionette"), "about:blank"],
                                           self.debug_info)
 
-        env = get_environ(self.chaos_mode_flags)
+        env = get_environ(self.chaos_mode_flags, self.env_extras)
 
         self.runner = FennecEmulatorRunner(app=self.package_name,
                                            profile=self.profile,
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/base.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/base.py
index c537e8271c7..17be0cec39f 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/base.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/base.py
@@ -739,23 +739,22 @@ class CallbackHandler:
     def process_action(self, url, payload):
         action = payload["action"]
         cmd_id = payload["id"]
-        self.logger.debug("Got action: %s" % action)
+        self.logger.debug(f"Got action: {action}")
         try:
             action_handler = self.actions[action]
         except KeyError:
-            raise ValueError("Unknown action %s" % action)
+            raise ValueError(f"Unknown action {action}")
         try:
             with ActionContext(self.logger, self.protocol, payload.get("context")):
                 result = action_handler(payload)
         except self.unimplemented_exc:
             self.logger.warning("Action %s not implemented" % action)
-            self._send_message(cmd_id, "complete", "error", "Action %s not implemented" % action)
+            self._send_message(cmd_id, "complete", "error", f"Action {action} not implemented")
         except self.expected_exc:
-            self.logger.debug("Action %s failed with an expected exception" % action)
-            self._send_message(cmd_id, "complete", "error")
+            self.logger.debug(f"Action {action} failed with an expected exception")
+            self._send_message(cmd_id, "complete", "error", f"Action {action} failed")
         except Exception:
-            self.logger.error("Action %s failed" % action)
-            self.logger.warning(traceback.format_exc())
+            self.logger.warning(f"Action {action} failed")
             self._send_message(cmd_id, "complete", "error")
             raise
         else:
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executormarionette.py b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executormarionette.py
index 9c9c18735a6..95f18608204 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executormarionette.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/executors/executormarionette.py
@@ -73,10 +73,9 @@ def _switch_to_window(marionette, handle):
 
 
 class MarionetteCallbackHandler(CallbackHandler):
-
     def __init__(self, logger, protocol, test_window):
         MarionetteCallbackHandler.expected_exc = (errors.MarionetteException,)
-        super().__init__(self, logger, protocol, test_window)
+        super().__init__(logger, protocol, test_window)
 
 
 class MarionetteBaseProtocolPart(BaseProtocolPart):
@@ -972,7 +971,7 @@ class MarionetteTestharnessExecutor(TestharnessExecutor):
         if self.debug_test and self.browser.supports_devtools:
             self.protocol.debug.load_devtools()
 
-        handler = CallbackHandler(self.logger, protocol, test_window)
+        handler = MarionetteCallbackHandler(self.logger, protocol, test_window)
         protocol.marionette.navigate(url)
         while True:
             result = protocol.base.execute_script(
diff --git a/tests/wpt/tests/tools/wptrunner/wptrunner/wptcommandline.py b/tests/wpt/tests/tools/wptrunner/wptrunner/wptcommandline.py
index d4950e14c0c..875ba7e66a9 100644
--- a/tests/wpt/tests/tools/wptrunner/wptrunner/wptcommandline.py
+++ b/tests/wpt/tests/tools/wptrunner/wptrunner/wptcommandline.py
@@ -340,6 +340,10 @@ scheme host and port.""")
                              "(see http://searchfox.org/mozilla-central/source/mfbt/ChaosMode.h for "
                              "details). If no value is supplied, all features are activated")
 
+    gecko_view_group = parser.add_argument_group("GeckoView-specific")
+    gecko_view_group.add_argument("--setenv", dest="env", action="append", default=[],
+                                  help="Set target environment variable, like FOO=BAR")
+
     servo_group = parser.add_argument_group("Servo-specific")
     servo_group.add_argument("--user-stylesheet",
                              default=[], action="append", dest="user_stylesheets",
diff --git a/tests/wpt/tests/web-animations/animation-model/keyframe-effects/effect-value-opacity-replaced-effect-ref.html b/tests/wpt/tests/web-animations/animation-model/keyframe-effects/effect-value-opacity-replaced-effect-ref.html
new file mode 100644
index 00000000000..792ca214cfb
--- /dev/null
+++ b/tests/wpt/tests/web-animations/animation-model/keyframe-effects/effect-value-opacity-replaced-effect-ref.html
@@ -0,0 +1,9 @@
+<!doctype html>
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  background: green;
+}
+</style>
+<div></div>
diff --git a/tests/wpt/tests/web-animations/animation-model/keyframe-effects/effect-value-opacity-replaced-effect.html b/tests/wpt/tests/web-animations/animation-model/keyframe-effects/effect-value-opacity-replaced-effect.html
new file mode 100644
index 00000000000..bef3bd3e8d2
--- /dev/null
+++ b/tests/wpt/tests/web-animations/animation-model/keyframe-effects/effect-value-opacity-replaced-effect.html
@@ -0,0 +1,32 @@
+<!doctype html>
+<html class="reftest-wait">
+<head>
+<meta charset=utf-8>
+<title>The effect value of consecutive animations targeting 'opacity'</title>
+<link rel="help" href="https://drafts.csswg.org/web-animations/">
+<link rel="match" href="effect-value-opacity-replaced-effect-ref.html">
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  background: green;
+  will-change: opacity;
+}
+</style>
+</head>
+<body>
+<div></div>
+<script>
+'use strict';
+
+(async function () {
+  const div = document.querySelector('div');
+
+  await div.animate({ opacity: [1, 0] }, { duration: 10, fill: 'both' }).finished;
+  await div.animate({ opacity: [0, 1] }, { duration: 10, fill: 'both' }).finished;
+
+  document.documentElement.classList.remove("reftest-wait");
+})();
+</script>
+</body>
+</html>
diff --git a/tests/wpt/tests/web-animations/testcommon.js b/tests/wpt/tests/web-animations/testcommon.js
index 8597ca28df9..a106cd9ac67 100644
--- a/tests/wpt/tests/web-animations/testcommon.js
+++ b/tests/wpt/tests/web-animations/testcommon.js
@@ -288,7 +288,12 @@ function assert_rotate3d_equals(actual, expected, description) {
 
 function assert_phase_at_time(animation, phase, currentTime) {
   animation.currentTime = currentTime;
+  assert_phase(animation, phase);
+}
+
+function assert_phase(animation, phase) {
   const fillMode = animation.effect.getTiming().fill;
+  const currentTime = animation.currentTime;
 
   if (phase === 'active') {
     // If the fill mode is 'none', then progress will only be non-null if we
diff --git a/tests/wpt/tests/web-locks/partitioned-web-locks.tentative.https.html b/tests/wpt/tests/web-locks/partitioned-web-locks.tentative.https.html
index 2f166e67bc1..680474dea98 100644
--- a/tests/wpt/tests/web-locks/partitioned-web-locks.tentative.https.html
+++ b/tests/wpt/tests/web-locks/partitioned-web-locks.tentative.https.html
@@ -29,10 +29,10 @@ let next_lock_id = 1;
 // back to the pop-up.
 // Step 6 (pop-up): intercept the result message from the iframe and
 // send it to the top-frame.
-// Step 7 (top-frame): ensure that the same-site iframe's web-lock
+// Step 7 (top-frame): add cleanup hook.
+// Step 8 (top-frame): ensure that the same-site iframe's web-lock
 // request succeeds since it and the top-level site are successfully
 // partitioned and each can hold an exclusive lock.
-// Step 8 (top-frame): clean up.
 
 async function third_party_test(t) {
   let target_url = HTTPS_ORIGIN + '/web-locks/resources/iframe.html';
@@ -59,19 +59,19 @@ async function third_party_test(t) {
   const result = await new Promise(resolve => window.onmessage = resolve);
 
   // Step 7.
-  // When 3rd party storage partitioning is enabled, the iframe should be able
-  // to aquire a lock with the same name as one exclusively held by the opener
-  // of its top window, even when that opener has the same origin.
-  assert_equals(result.data.failed, undefined,
-      'The 1p iframe failed to acquire the lock');
-
-  // Step 8.
   t.add_cleanup(() => {
     w.close()
     for(let i = 1; i < next_lock_id; i++){
       held.get(i)();
     }
   });
+
+  // Step 8.
+  // When 3rd party storage partitioning is enabled, the iframe should be able
+  // to acquire a lock with the same name as one exclusively held by the opener
+  // of its top window, even when that opener has the same origin.
+  assert_equals(result.data.failed, undefined,
+      'The 1p iframe failed to acquire the lock');
 }
 
 promise_test(t => {
@@ -101,10 +101,10 @@ promise_test(t => {
 // child iframe and send it to the pop-up.
 // Nested Step 9 (pop-up): intercept the result message from the parent
 // iframe and send it to the top frame.
-// Nested Step 10 (top frame): ensure that the same-site iframe's web-lock
+// Nested Step 10 (top frame): add cleanup hook
+// Nested Step 11 (top frame): ensure that the same-site iframe's web-lock
 // request succeeds since it and the top-level are successfully
 // partitioned and each can hold an exclusive lock.
-// Nested Step 11 (top frame): clean up.
 
 // Map of lock_id => function that releases a lock.
 const held_2 = new Map();
@@ -145,19 +145,19 @@ async function nested_iframe_test(t) {
   const result = await new Promise(resolve => window.onmessage = resolve);
 
   // Nested Step 10.
-  // With third-party storage partitioning enabled, the same-site iframe
-  // should be able to acquire the lock as it has a cross-site ancestor
-  // and is partitioned separately from the top-level site.
-  assert_equals(result.data.failed, undefined,
-      'The 1p iframe failed to acquire the lock');
-
-  // Nested Step 11.
   t.add_cleanup(() => {
     w.close()
     for(let i = 1; i < next_lock_id_2; i++){
       held_2.get(i)();
     }
   });
+
+  // Nested Step 11.
+  // With third-party storage partitioning enabled, the same-site iframe
+  // should be able to acquire the lock as it has a cross-site ancestor
+  // and is partitioned separately from the top-level site.
+  assert_equals(result.data.failed, undefined,
+      'The 1p iframe failed to acquire the lock');
 }
 
 promise_test(t => {
diff --git a/tests/wpt/tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/setSinkId-with-MediaElementAudioSourceNode.https.html b/tests/wpt/tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/setSinkId-with-MediaElementAudioSourceNode.https.html
new file mode 100644
index 00000000000..af71782717a
--- /dev/null
+++ b/tests/wpt/tests/webaudio/the-audio-api/the-mediaelementaudiosourcenode-interface/setSinkId-with-MediaElementAudioSourceNode.https.html
@@ -0,0 +1,49 @@
+<!doctype html>
+<head>
+<title>Test HTMLMediaElement.setSinkId() with MediaElementAudioSourceNode</title>
+<link rel="help" href="https://webaudio.github.io/web-audio-api/#MediaElementAudioSourceNode">
+</head>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=/resources/testdriver.js></script>
+<script src=/resources/testdriver-vendor.js></script>
+<script>
+"use strict";
+/*
+MediaElementAudioSourceNode silences HTMLMediaElement output to underlying
+devices but setSinkId() should still function as if there were no
+MediaElementAudioSourceNode according to
+"The HTMLMediaElement MUST behave in an identical fashion after the
+MediaElementAudioSourceNode has been created, except that the rendered audio
+will no longer be heard directly, but instead will be heard as a consequence
+of the MediaElementAudioSourceNode being connected through the routing graph."
+ */
+
+let audio;
+promise_setup(async () => {
+  audio = new Audio();
+  audio.src = "/media/sound_5.oga";
+  audio.autoplay = true;
+  audio.loop = true;
+  new AudioContext().createMediaElementSource(audio);
+  await new Promise(r => audio.onplay = r);
+});
+
+promise_test(t => audio.setSinkId(""), "setSinkId on default audio output should always work");
+
+promise_test(t => promise_rejects_dom(t, "NotFoundError", audio.setSinkId("nonexistent_device_id")),
+  "setSinkId fails with NotFoundError on made up deviceid");
+
+promise_test(async t => {
+  await test_driver.bless('transient activation for selectAudioOutput()');
+  const {deviceId} = await navigator.mediaDevices.selectAudioOutput();
+  assert_greater_than(deviceId.length, 0, "deviceId.length");
+  const p1 = audio.setSinkId(deviceId);
+  assert_equals(audio.sinkId, "", "before it resolves, setSinkId is unchanged");
+  await p1;
+  assert_equals(audio.sinkId, deviceId, "setSinkId updates sinkId to the requested deviceId");
+  await audio.setSinkId("");
+  assert_equals(audio.sinkId, "", "resetting sink ID to default audio output should always work");
+}, "setSinkId() with output device ID exposed by selectAudioOutput() should resolve");
+
+</script>
diff --git a/tests/wpt/tests/webcodecs/encoded-video-chunk.any.js b/tests/wpt/tests/webcodecs/encoded-video-chunk.any.js
index 0cf0d8de440..9b60e59a793 100644
--- a/tests/wpt/tests/webcodecs/encoded-video-chunk.any.js
+++ b/tests/wpt/tests/webcodecs/encoded-video-chunk.any.js
@@ -42,4 +42,15 @@ test(t => {
   assert_throws_js(
     TypeError,
     () => chunk.copyTo(detached), 'destination is detached');
-}, 'Test copyTo() exception if destiation invalid');
\ No newline at end of file
+}, 'Test copyTo() exception if destiation invalid');
+
+test(t => {
+  let chunk = new EncodedVideoChunk({type: 'key',
+                                     timestamp: 10,
+                                     duration: 300,
+                                     data: new Uint8Array()});
+  assert_equals(chunk.byteLength, 0, 'byteLength');
+  let copyDest = new Uint8Array();
+  chunk.copyTo(copyDest);
+  assert_equals(copyDest.length, 0, 'copyDest.length');
+}, 'Test we can construct an zero-sized EncodedVideoChunk.');
diff --git a/tests/wpt/tests/webcodecs/videoDecoder-codec-specific.https.any.js b/tests/wpt/tests/webcodecs/videoDecoder-codec-specific.https.any.js
index 4e0843646b7..31e14d81f34 100644
--- a/tests/wpt/tests/webcodecs/videoDecoder-codec-specific.https.any.js
+++ b/tests/wpt/tests/webcodecs/videoDecoder-codec-specific.https.any.js
@@ -363,7 +363,10 @@ promise_test(async t => {
   const callbacks = {};
 
   let errors = 0;
-  callbacks.error = e => errors++;
+  let gotError = new Promise(resolve => callbacks.error = e => {
+    errors++;
+    resolve(e);
+  });
   callbacks.output = frame => { frame.close(); };
 
   const decoder = createVideoDecoder(t, callbacks);
@@ -372,9 +375,16 @@ promise_test(async t => {
   decoder.decode(new EncodedVideoChunk(
       {type: 'key', timestamp: 1, data: new ArrayBuffer(0)}));
 
-  await promise_rejects_dom(t, 'AbortError', decoder.flush());
+  await promise_rejects_dom(t, "EncodingError",
+    decoder.flush().catch((e) => {
+      assert_equals(errors, 0);
+      throw e;
+    })
+  );
 
-  assert_equals(errors, 1, 'errors');
+  let e = await gotError;
+  assert_true(e instanceof DOMException);
+  assert_equals(e.name, 'EncodingError');
   assert_equals(decoder.state, 'closed', 'state');
 }, 'Decode empty frame');
 
@@ -384,7 +394,10 @@ promise_test(async t => {
   const callbacks = {};
 
   let errors = 0;
-  callbacks.error = e => errors++;
+  let gotError = new Promise(resolve => callbacks.error = e => {
+    errors++;
+    resolve(e);
+  });
 
   let outputs = 0;
   callbacks.output = frame => {
@@ -397,10 +410,17 @@ promise_test(async t => {
   decoder.decode(CHUNKS[0]);  // Decode keyframe first.
   decoder.decode(createCorruptChunk(2));
 
-  await promise_rejects_dom(t, 'AbortError', decoder.flush());
+  await promise_rejects_dom(t, "EncodingError",
+    decoder.flush().catch((e) => {
+      assert_equals(errors, 0);
+      throw e;
+    })
+  );
 
   assert_less_than_equal(outputs, 1);
-  assert_equals(errors, 1, 'errors');
+  let e = await gotError;
+  assert_true(e instanceof DOMException);
+  assert_equals(e.name, 'EncodingError');
   assert_equals(decoder.state, 'closed', 'state');
 }, 'Decode corrupt frame');
 
diff --git a/tests/wpt/tests/webdriver/tests/bidi/__init__.py b/tests/wpt/tests/webdriver/tests/bidi/__init__.py
index 033978e1936..82168462097 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/__init__.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/__init__.py
@@ -86,11 +86,11 @@ async def get_device_pixel_ratio(bidi_session, context):
 
     :param bidi_session: BiDiSession
     :param context: Browsing context ID
-    :returns: (int) devicePixelRatio.
+    :returns: (float) devicePixelRatio.
     """
     result = await bidi_session.script.call_function(
         function_declaration="""() => {
-        return Math.floor(window.devicePixelRatio);
+        return window.devicePixelRatio;
     }""",
         target=ContextTarget(context["context"]),
         await_promise=False)
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/capture_screenshot/__init__.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/capture_screenshot/__init__.py
index c4d8dd5252c..64f25b9b861 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/capture_screenshot/__init__.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/capture_screenshot/__init__.py
@@ -1,3 +1,4 @@
+from math import floor
 from webdriver.bidi.modules.script import ContextTarget
 
 from ... import get_device_pixel_ratio, get_viewport_dimensions
@@ -12,4 +13,4 @@ async def get_physical_viewport_dimensions(bidi_session, context):
     """
     viewport = await get_viewport_dimensions(bidi_session, context)
     dpr = await get_device_pixel_ratio(bidi_session, context)
-    return (viewport["width"] * dpr, viewport["height"] * dpr)
+    return (floor(viewport["width"] * dpr), floor(viewport["height"] * dpr))
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/capture_screenshot/capture_screenshot.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/capture_screenshot/capture_screenshot.py
index 7b26b2be0ce..0ee4c8ed274 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/capture_screenshot/capture_screenshot.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/capture_screenshot/capture_screenshot.py
@@ -1,8 +1,10 @@
 import pytest
 
+from math import floor
 from tests.support.image import png_dimensions
 
 from . import get_physical_viewport_dimensions
+from ... import get_device_pixel_ratio, get_viewport_dimensions
 
 
 @pytest.mark.asyncio
@@ -35,3 +37,33 @@ async def test_capture(bidi_session, top_context, inline, compare_png_bidi):
 
     comparison = await compare_png_bidi(new_data, data)
     assert comparison.equal()
+
+
+@pytest.mark.parametrize("delta_width", [-10, +20], ids=["width smaller", "width larger"])
+@pytest.mark.parametrize("delta_height", [-30, +40], ids=["height smaller", "height larger"])
+@pytest.mark.asyncio
+async def test_capture_with_viewport(bidi_session, new_tab, delta_width, delta_height):
+    original_viewport = await get_viewport_dimensions(bidi_session, new_tab)
+
+    dpr = await get_device_pixel_ratio(bidi_session, new_tab)
+
+    test_viewport = {
+        "width": original_viewport["width"] + delta_width,
+        "height": original_viewport["height"] + delta_height
+    }
+    await bidi_session.browsing_context.set_viewport(
+        context=new_tab["context"],
+        viewport=test_viewport)
+
+    expected_size = {
+        "width": floor(test_viewport["width"] * dpr),
+        "height": floor(test_viewport["height"] * dpr)
+    }
+
+    await bidi_session.browsing_context.navigate(
+        context=new_tab["context"], url="about:blank", wait="complete"
+    )
+
+    result = await bidi_session.browsing_context.capture_screenshot(
+        context=new_tab["context"])
+    assert png_dimensions(result) == (expected_size["width"], expected_size["height"])
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/about_blank.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/about_blank.py
index 1f6d4774ae7..55ca3512977 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/about_blank.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/about_blank.py
@@ -5,7 +5,7 @@ from . import navigate_and_assert
 pytestmark = pytest.mark.asyncio
 
 PAGE_ABOUT_BLANK = "about:blank"
-PAGE_EMPTY = "/webdriver/tests/bidi/browsing_context/navigate/support/empty.html"
+PAGE_EMPTY = "/webdriver/tests/bidi/browsing_context/support/empty.html"
 
 
 async def test_navigate_from_single_page(bidi_session, new_tab, url):
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/data_url.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/data_url.py
index 8fd5695646d..6d95beb66c0 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/data_url.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/data_url.py
@@ -31,7 +31,7 @@ IMG_RED_PIXEL = dataURL(
     None,
     True,
 )
-PAGE = "/webdriver/tests/bidi/browsing_context/navigate/support/empty.html"
+PAGE = "/webdriver/tests/bidi/browsing_context/support/empty.html"
 TEXT_BAR = dataURL("bar", "text/plain")
 TEXT_FOO = dataURL("foo", "text/plain")
 
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/frame.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/frame.py
index 2c2131b6ee6..4dcd88dfdb8 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/frame.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/frame.py
@@ -33,7 +33,7 @@ async def test_multiple_frames(
 
     await navigate_and_assert(bidi_session, frame, inline(PAGE_CONTENT))
 
-    # Make sure that the sesond frame hasn't been navigated
+    # Make sure that the second frame hasn't been navigated
     contexts = await bidi_session.browsing_context.get_tree(root=new_tab["context"])
     assert contexts[0]["children"][1]["url"] == test_page2
 
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/hash.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/hash.py
index d4862a62012..d31c3f9a6eb 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/hash.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/hash.py
@@ -4,9 +4,9 @@ from . import navigate_and_assert
 
 pytestmark = pytest.mark.asyncio
 
-PAGE_EMPTY = "/webdriver/tests/bidi/browsing_context/navigate/support/empty.html"
+PAGE_EMPTY = "/webdriver/tests/bidi/browsing_context/support/empty.html"
 PAGE_EMPTY_WITH_HASH_FOO = f"{PAGE_EMPTY}#foo"
-PAGE_OTHER = "/webdriver/tests/bidi/browsing_context/navigate/support/other.html"
+PAGE_OTHER = "/webdriver/tests/bidi/browsing_context/support/other.html"
 
 
 @pytest.mark.parametrize(
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/image.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/image.py
index b52ea9787c0..79030c9fe12 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/image.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/image.py
@@ -4,10 +4,10 @@ from . import navigate_and_assert
 
 pytestmark = pytest.mark.asyncio
 
-PAGE_EMPTY = "/webdriver/tests/bidi/browsing_context/navigate/support/empty.html"
-PNG_BLACK_DOT = "/webdriver/tests/bidi/browsing_context/navigate/support/black_dot.png"
-PNG_RED_DOT = "/webdriver/tests/bidi/browsing_context/navigate/support/red_dot.png"
-SVG = "/webdriver/tests/bidi/browsing_context/navigate/support/other.svg"
+PAGE_EMPTY = "/webdriver/tests/bidi/browsing_context/support/empty.html"
+PNG_BLACK_DOT = "/webdriver/tests/bidi/browsing_context/support/black_dot.png"
+PNG_RED_DOT = "/webdriver/tests/bidi/browsing_context/support/red_dot.png"
+SVG = "/webdriver/tests/bidi/browsing_context/support/other.svg"
 
 
 @pytest.mark.parametrize(
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/navigate.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/navigate.py
index a35f2728ef7..14245702812 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/navigate.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/navigate.py
@@ -35,8 +35,8 @@ async def test_interactive_simultaneous_navigation(bidi_session, inline, new_tab
     # interactive wait condition for both.
     # Make sure that monitoring the DOMContentLoaded event for one frame does
     # prevent monitoring it for the other frame.
-    img_url = "/webdriver/tests/bidi/browsing_context/navigate/support/empty.svg"
-    script_url = "/webdriver/tests/bidi/browsing_context/navigate/support/empty.js"
+    img_url = "/webdriver/tests/bidi/browsing_context/support/empty.svg"
+    script_url = "/webdriver/tests/bidi/browsing_context/support/empty.js"
     # frame1 also has a slow loading image so that it won't reach a complete
     # navigation, and we can make sure we resolved with the interactive state.
     frame1_url = inline(
@@ -72,7 +72,7 @@ async def test_interactive_simultaneous_navigation(bidi_session, inline, new_tab
 
 async def test_relative_url(bidi_session, new_tab, url):
     url_before = url(
-        "/webdriver/tests/bidi/browsing_context/navigate/support/empty.html"
+        "/webdriver/tests/bidi/browsing_context/support/empty.html"
     )
 
     # Navigate to page1 with wait=interactive to make sure the document's base URI
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/wait.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/wait.py
index 9a0b14e755e..3a351e10890 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/wait.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/wait.py
@@ -44,8 +44,8 @@ async def test_expected_url(bidi_session, inline, new_tab, value):
     ],
 )
 async def test_slow_image_blocks_load(bidi_session, inline, new_tab, wait, expect_timeout):
-    script_url = "/webdriver/tests/bidi/browsing_context/navigate/support/empty.svg"
-    url = inline(f"<img src='{script_url}?pipe=trickle(d10)'>")
+    image_url = "/webdriver/tests/bidi/browsing_context/support/empty.svg"
+    url = inline(f"<img src='{image_url}?pipe=trickle(d10)'>")
 
     await wait_for_navigation(bidi_session, new_tab["context"], url, wait, expect_timeout)
 
@@ -69,7 +69,7 @@ async def test_slow_image_blocks_load(bidi_session, inline, new_tab, wait, expec
 )
 async def test_slow_page(bidi_session, new_tab, url, wait, expect_timeout):
     page_url = url(
-        "/webdriver/tests/bidi/browsing_context/navigate/support/empty.html?pipe=trickle(d10)"
+        "/webdriver/tests/bidi/browsing_context/support/empty.html?pipe=trickle(d10)"
     )
 
     await wait_for_navigation(bidi_session, new_tab["context"], page_url, wait, expect_timeout)
@@ -87,12 +87,12 @@ async def test_slow_page(bidi_session, new_tab, url, wait, expect_timeout):
     ],
 )
 async def test_slow_script_blocks_domContentLoaded(bidi_session, inline, new_tab, wait, expect_timeout):
-    script_url = "/webdriver/tests/bidi/browsing_context/navigate/support/empty.js"
+    script_url = "/webdriver/tests/bidi/browsing_context/support/empty.js"
     url = inline(f"<script src='{script_url}?pipe=trickle(d10)'></script>")
 
     await wait_for_navigation(bidi_session, new_tab["context"], url, wait, expect_timeout)
 
-    # In theory we could also assert the top context URL has been updated here,
-    # but since we expect both "interactive" and "complete" to timeout the
+    # In theory we could also assert the top context URL has been updated here
+    # but since we expect both "interactive" and "complete" to timeout, the
     # wait_for_navigation helper will resume arbitrarily after 1 second, and
     # there is no guarantee that the URL has been updated.
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/frame.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/frame.py
new file mode 100644
index 00000000000..ce9281583f2
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/frame.py
@@ -0,0 +1,35 @@
+import pytest
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize("domain", ["", "alt"],
+                         ids=["same_origin", "cross_origin"])
+async def test_origin(bidi_session, new_tab, inline, domain):
+    frame_start_url = inline("frame")
+    url_before = inline(f"<iframe src='{frame_start_url}'></iframe>",
+                        domain=domain)
+
+    # Navigate and assert (top-level).
+    result = await bidi_session.browsing_context.navigate(
+        context=new_tab['context'], url=url_before, wait="complete")
+    assert result["url"] == url_before
+
+    contexts = await bidi_session.browsing_context.get_tree(
+        root=new_tab['context'])
+    assert len(contexts) == 1
+    assert contexts[0]["url"] == url_before
+
+    assert len(contexts[0]["children"]) == 1
+    frame = contexts[0]["children"][0]
+    assert frame["url"] == frame_start_url
+
+    # Reload and assert (frame).
+    result = await bidi_session.browsing_context.reload(
+        context=frame['context'], wait="complete")
+    assert result == {}
+
+    contexts = await bidi_session.browsing_context.get_tree(
+        root=frame['context'])
+    assert len(contexts) == 1
+    assert contexts[0]["url"] == frame_start_url
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/reload.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/reload.py
new file mode 100644
index 00000000000..b6e957e8a8c
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/reload.py
@@ -0,0 +1,57 @@
+import pytest
+
+from pathlib import Path
+
+pytestmark = pytest.mark.asyncio
+
+PNG_BLACK_DOT = "/webdriver/tests/bidi/browsing_context/support/black_dot.png"
+
+
+async def test_return_value(bidi_session, inline, new_tab):
+    url = inline("<div>foo</div>")
+    await bidi_session.browsing_context.navigate(context=new_tab["context"],
+                                                 url=url)
+
+    result = await bidi_session.browsing_context.reload(
+        context=new_tab["context"])
+    assert result == {}
+
+
+@pytest.mark.parametrize(
+    "initial_url",
+    [
+        "about:blank",
+        "https://example.com/#foo",
+        "data:text/html,<p>foo</p>",
+        f'file://{Path(__file__).parent.parent.resolve() / "support/empty.html"}',
+    ],
+    ids=[
+        "about:blank",
+        "hash",
+        "data url",
+        "file url",
+    ],
+)
+async def test_reload(bidi_session, new_tab, initial_url):
+    await bidi_session.browsing_context.navigate(context=new_tab["context"],
+                                                 url=initial_url)
+    await bidi_session.browsing_context.reload(context=new_tab["context"],
+                                               wait="complete")
+
+    contexts = await bidi_session.browsing_context.get_tree(
+        root=new_tab['context'])
+    assert len(contexts) == 1
+    assert contexts[0]["url"] == initial_url
+
+
+async def test_image(bidi_session, new_tab, url):
+    initial_url = url(PNG_BLACK_DOT)
+    await bidi_session.browsing_context.navigate(context=new_tab["context"],
+                                                 url=initial_url)
+    await bidi_session.browsing_context.reload(context=new_tab["context"],
+                                               wait="complete")
+
+    contexts = await bidi_session.browsing_context.get_tree(
+        root=new_tab['context'])
+    assert len(contexts) == 1
+    assert contexts[0]["url"] == initial_url
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/wait.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/wait.py
new file mode 100644
index 00000000000..2b581c2f0db
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/reload/wait.py
@@ -0,0 +1,164 @@
+# META: timeout=long
+
+import asyncio
+import pytest
+
+pytestmark = pytest.mark.asyncio
+
+
+async def wait_for_reload(bidi_session, context, wait, expect_timeout):
+    # Ultimately, "interactive" and "complete" should support a timeout argument.
+    # See https://github.com/w3c/webdriver-bidi/issues/188.
+    if expect_timeout:
+        with pytest.raises(asyncio.TimeoutError):
+            await asyncio.wait_for(
+                asyncio.shield(
+                    bidi_session.browsing_context.reload(context=context,
+                                                         wait=wait)),
+                timeout=1,
+            )
+    else:
+        await bidi_session.browsing_context.reload(context=context, wait=wait)
+
+
+@pytest.mark.parametrize("wait", ["none", "interactive", "complete"])
+async def test_expected_url(bidi_session, inline, new_tab, wait):
+    url = inline("<div>foo</div>")
+    await bidi_session.browsing_context.navigate(context=new_tab["context"],
+                                                 url=url,
+                                                 wait="complete")
+    result = await bidi_session.browsing_context.reload(
+        context=new_tab["context"], wait=wait)
+    assert result == {}
+    if wait != "none":
+        contexts = await bidi_session.browsing_context.get_tree(
+            root=new_tab["context"], max_depth=0)
+        assert contexts[0]["url"] == url
+
+
+@pytest.mark.parametrize(
+    "wait, expect_timeout",
+    [
+        ("none", False),
+        ("interactive", False),
+        ("complete", True),
+    ],
+)
+async def test_slow_image_blocks_load(bidi_session, inline, new_tab, wait,
+                                      expect_timeout):
+
+    image_url = "/webdriver/tests/bidi/browsing_context/support/empty.svg"
+    url = inline(f"<img src='{image_url}?pipe=trickle(d3)'>")
+
+    await bidi_session.browsing_context.navigate(context=new_tab["context"],
+                                                 url=url,
+                                                 wait="complete")
+
+    await wait_for_reload(bidi_session, new_tab["context"], wait,
+                          expect_timeout)
+
+    # We cannot assert the URL for "none" by definition, and for "complete", since
+    # we expect a timeout. For the timeout case, the wait_for_navigation helper will
+    # resume after 1 second, there is no guarantee that the URL has been updated.
+    if wait == "interactive":
+        contexts = await bidi_session.browsing_context.get_tree(
+            root=new_tab["context"], max_depth=0)
+        assert contexts[0]["url"] == url
+
+
+@pytest.mark.parametrize(
+    "wait, expect_timeout",
+    [
+        ("none", False),
+        ("interactive", True),
+        ("complete", True),
+    ],
+)
+async def test_slow_page(bidi_session, new_tab, url, wait, expect_timeout,
+                         subscribe_events, wait_for_event):
+    url = url(
+        "/webdriver/tests/bidi/browsing_context/support/empty.html?pipe=trickle(d3)"
+    )
+
+    await bidi_session.browsing_context.navigate(context=new_tab["context"],
+                                                 url=url,
+                                                 wait="complete")
+
+    await subscribe_events(
+        events=["browsingContext.domContentLoaded", "browsingContext.load"],
+        contexts=[new_tab["context"]])
+
+    events = []
+
+    async def on_event(_, data):
+        events.append(data)
+
+    remove_listener_1 = bidi_session.add_event_listener(
+        "browsingContext.domContentLoaded", on_event)
+    remove_listener_2 = bidi_session.add_event_listener(
+        "browsingContext.load", on_event)
+
+    assert len(events) == 0
+
+    on_dom_content_load = wait_for_event("browsingContext.domContentLoaded")
+    on_load = wait_for_event("browsingContext.load")
+
+    await wait_for_reload(bidi_session, new_tab["context"], wait,
+                          expect_timeout)
+    # Note that we cannot assert the top context url here, because the navigation
+    # is blocked on the initial url for this test case.
+
+    await asyncio.gather(on_load, on_dom_content_load)
+    assert len(events) == 2
+
+    remove_listener_2()
+    remove_listener_1()
+
+
+@pytest.mark.parametrize(
+    "wait, expect_timeout",
+    [
+        ("none", False),
+        ("interactive", True),
+        ("complete", True),
+    ],
+)
+async def test_slow_script_blocks_domContentLoaded(bidi_session, inline,
+                                                   new_tab, wait,
+                                                   expect_timeout,
+                                                   subscribe_events,
+                                                   wait_for_event):
+    script_url = "/webdriver/tests/bidi/browsing_context/support/empty.js"
+    url = inline(f"<script src='{script_url}?pipe=trickle(d3)'></script>")
+
+    await bidi_session.browsing_context.navigate(context=new_tab["context"],
+                                                 url=url,
+                                                 wait="complete")
+
+    await subscribe_events(
+        events=["browsingContext.domContentLoaded", "browsingContext.load"],
+        contexts=[new_tab["context"]])
+
+    events = []
+
+    async def on_event(_, data):
+        events.append(data)
+
+    remove_listener_1 = bidi_session.add_event_listener(
+        "browsingContext.domContentLoaded", on_event)
+    remove_listener_2 = bidi_session.add_event_listener(
+        "browsingContext.load", on_event)
+
+    assert len(events) == 0
+
+    on_dom_content_load = wait_for_event("browsingContext.domContentLoaded")
+    on_load = wait_for_event("browsingContext.load")
+
+    await wait_for_reload(bidi_session, new_tab["context"], wait,
+                          expect_timeout)
+
+    await asyncio.gather(on_dom_content_load, on_load)
+    assert len(events) == 2
+
+    remove_listener_2()
+    remove_listener_1()
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/empty.html b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/set_viewport/__init__.py
similarity index 100%
rename from tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/empty.html
rename to tests/wpt/tests/webdriver/tests/bidi/browsing_context/set_viewport/__init__.py
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/set_viewport/invalid.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/set_viewport/invalid.py
new file mode 100644
index 00000000000..a649972ae18
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/set_viewport/invalid.py
@@ -0,0 +1,75 @@
+import pytest
+
+import webdriver.bidi.error as error
+
+
+@pytest.mark.parametrize("value", [None, False, 42, {}, []])
+@pytest.mark.asyncio
+async def test_params_context_invalid_type(bidi_session, value):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.set_viewport(context=value, viewport={
+            "width": 100,
+            "height": 200,
+        })
+
+
+@pytest.mark.asyncio
+async def test_params_context_invalid_value(bidi_session):
+    with pytest.raises(error.NoSuchFrameException):
+        await bidi_session.browsing_context.set_viewport(context="_invalid_")
+
+
+@pytest.mark.asyncio
+async def test_params_context_iframe(bidi_session, new_tab, get_test_page):
+    url = get_test_page(as_frame=True)
+    await bidi_session.browsing_context.navigate(
+        context=new_tab["context"],
+        url=url,
+        wait="complete")
+
+    contexts = await bidi_session.browsing_context.get_tree(root=new_tab["context"])
+    assert len(contexts) == 1
+    frames = contexts[0]["children"]
+    assert len(frames) == 1
+    frame_context = frames[0]["context"]
+
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.set_viewport(context=frame_context)
+
+
+@pytest.mark.parametrize("viewport", [False, 42, "", {}, [], {"width": 100}, {"height": 100}])
+@pytest.mark.asyncio
+async def test_params_viewport_invalid_type(bidi_session, new_tab, viewport):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.set_viewport(context=new_tab["context"], viewport=viewport)
+
+
+@pytest.mark.parametrize("width", [None, False, "", {}, []])
+@pytest.mark.asyncio
+async def test_params_viewport_width_invalid_type(bidi_session, new_tab, width):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.set_viewport(context=new_tab["context"], viewport={
+            "width": width,
+            "height": 100,
+        })
+
+
+@pytest.mark.parametrize("height", [None, False, "", {}, []])
+@pytest.mark.asyncio
+async def test_params_viewport_height_invalid_type(bidi_session, new_tab, height):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.set_viewport(context=new_tab["context"], viewport={
+            "width": 100,
+            "height": height,
+        })
+
+
+@pytest.mark.parametrize("viewport", [
+    {"width": -1, "height": 100},
+    {"width": 100, "height": -1},
+    {"width": -1, "height": -1},
+], ids=["width negative", "height negative", "both negative"])
+@pytest.mark.asyncio
+async def test_params_viewport_invalid_value(bidi_session, new_tab, viewport):
+    with pytest.raises(error.InvalidArgumentException):
+        await bidi_session.browsing_context.set_viewport(context=new_tab["context"], viewport=viewport)
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/set_viewport/set_viewport.py b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/set_viewport/set_viewport.py
new file mode 100644
index 00000000000..1aa977be421
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/set_viewport/set_viewport.py
@@ -0,0 +1,126 @@
+import pytest
+
+from ... import get_viewport_dimensions
+
+
+@pytest.mark.asyncio
+async def test_set_viewport(bidi_session, new_tab):
+    test_viewport = {"width": 250, "height": 300}
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) != test_viewport
+
+    await bidi_session.browsing_context.set_viewport(
+        context=new_tab["context"],
+        viewport=test_viewport)
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+
+
+@pytest.mark.asyncio
+async def test_set_viewport_same_dimensions(bidi_session, new_tab):
+    test_viewport = {"width": 250, "height": 300}
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) != test_viewport
+
+    await bidi_session.browsing_context.set_viewport(
+        context=new_tab["context"],
+        viewport=test_viewport)
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+
+    await bidi_session.browsing_context.set_viewport(
+        context=new_tab["context"],
+        viewport=test_viewport)
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+
+
+@pytest.mark.asyncio
+async def test_set_viewport_reset(bidi_session, new_tab):
+    original_viewport = await get_viewport_dimensions(bidi_session, new_tab)
+
+    test_viewport = {"width": 666, "height": 333}
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) != test_viewport
+
+    await bidi_session.browsing_context.set_viewport(
+      context=new_tab["context"],
+      viewport=test_viewport)
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+
+    await bidi_session.browsing_context.set_viewport(
+      context=new_tab["context"],
+      viewport=None)
+    assert await get_viewport_dimensions(bidi_session, new_tab) == original_viewport
+
+
+@pytest.mark.asyncio
+async def test_set_viewport_affects_specific_context(bidi_session, top_context, new_tab):
+    original_viewport = await get_viewport_dimensions(bidi_session, top_context)
+
+    test_viewport = {"width": 333, "height": 666}
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) != test_viewport
+
+    await bidi_session.browsing_context.set_viewport(
+      context=new_tab["context"],
+      viewport=test_viewport)
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+    assert await get_viewport_dimensions(bidi_session, top_context) == original_viewport
+
+
+@pytest.mark.parametrize("protocol,parameters", [
+    ("http", ""),
+    ("https", ""),
+    ("https", {"pipe": "header(Cross-Origin-Opener-Policy,same-origin)"})
+], ids=[
+    "http",
+    "https",
+    "https coop"
+])
+@pytest.mark.asyncio
+async def test_set_viewport_persists_on_navigation(bidi_session, new_tab, inline, protocol, parameters):
+    test_viewport = {"width": 499, "height": 599}
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) != test_viewport
+
+    await bidi_session.browsing_context.set_viewport(
+        context=new_tab["context"],
+        viewport=test_viewport)
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+
+    url = inline("<div>foo</div>", parameters=parameters, protocol=protocol)
+    await bidi_session.browsing_context.navigate(
+        context=new_tab["context"], url=url, wait="complete"
+    )
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+
+    url = inline("<div>bar</div>", parameters=parameters, protocol=protocol, domain="alt")
+    await bidi_session.browsing_context.navigate(
+        context=new_tab["context"], url=url, wait="complete"
+    )
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+
+
+@pytest.mark.asyncio
+async def test_set_viewport_persists_on_reload(bidi_session, new_tab):
+    test_viewport = {"width": 499, "height": 599}
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) != test_viewport
+
+    await bidi_session.browsing_context.set_viewport(
+        context=new_tab["context"],
+        viewport=test_viewport)
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
+
+    await bidi_session.browsing_context.reload(
+        context=new_tab["context"], wait="complete"
+    )
+
+    assert await get_viewport_dimensions(bidi_session, new_tab) == test_viewport
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/black_dot.png b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/black_dot.png
similarity index 100%
rename from tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/black_dot.png
rename to tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/black_dot.png
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/other.html b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/empty.html
similarity index 100%
rename from tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/other.html
rename to tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/empty.html
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/empty.js b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/empty.js
similarity index 100%
rename from tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/empty.js
rename to tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/empty.js
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/empty.svg b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/empty.svg
similarity index 100%
rename from tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/empty.svg
rename to tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/empty.svg
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/other.html b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/other.html
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/other.svg b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/other.svg
similarity index 100%
rename from tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/other.svg
rename to tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/other.svg
diff --git a/tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/red_dot.png b/tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/red_dot.png
similarity index 100%
rename from tests/wpt/tests/webdriver/tests/bidi/browsing_context/navigate/support/red_dot.png
rename to tests/wpt/tests/webdriver/tests/bidi/browsing_context/support/red_dot.png
diff --git a/tests/wpt/tests/webdriver/tests/bidi/script/call_function/result.py b/tests/wpt/tests/webdriver/tests/bidi/script/call_function/result.py
index a930cf2292f..df989c407ee 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/script/call_function/result.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/script/call_function/result.py
@@ -66,10 +66,10 @@ async def test_primitive_values(bidi_session, top_context, await_promise, expres
             {
                 "type": "object",
                 "value": [
-                    ["foo", {"type": "object"}],
-                    ["qux", {"type": "string", "value": "quux"}],
                     ["1", {"type": "string", "value": "fred"}],
                     ["2", {"type": "string", "value": "thud"}],
+                    ["foo", {"type": "object"}],
+                    ["qux", {"type": "string", "value": "quux"}],
                 ],
             },
         ),
diff --git a/tests/wpt/tests/webdriver/tests/bidi/script/call_function/result_node.py b/tests/wpt/tests/webdriver/tests/bidi/script/call_function/result_node.py
index a2359b164eb..9d09b9fc04a 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/script/call_function/result_node.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/script/call_function/result_node.py
@@ -464,6 +464,7 @@ async def test_doctype_node(
                 "sharedId": any_string,
                 "value": {
                     "childNodeCount": 1,
+                    "mode": "open",
                     "nodeType": 11
                 }
             }
diff --git a/tests/wpt/tests/webdriver/tests/bidi/script/call_function/serialization_options.py b/tests/wpt/tests/webdriver/tests/bidi/script/call_function/serialization_options.py
new file mode 100644
index 00000000000..4084ec48209
--- /dev/null
+++ b/tests/wpt/tests/webdriver/tests/bidi/script/call_function/serialization_options.py
@@ -0,0 +1,569 @@
+import pytest
+from webdriver.bidi.modules.script import ContextTarget, SerializationOptions
+
+from ... import any_string, recursive_compare
+
+pytestmark = pytest.mark.asyncio
+
+
+@pytest.mark.parametrize(
+    "include_shadow_tree, shadow_root_mode, contains_children, expected",
+    [
+        (
+            None,
+            "open",
+            False,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {"nodeType": 11, "childNodeCount": 1},
+            },
+        ),
+        (
+            None,
+            "closed",
+            False,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {"nodeType": 11, "childNodeCount": 1},
+            },
+        ),
+        (
+            "none",
+            "open",
+            False,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {"nodeType": 11, "childNodeCount": 1},
+            },
+        ),
+        (
+            "none",
+            "closed",
+            False,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {"nodeType": 11, "childNodeCount": 1},
+            },
+        ),
+        (
+            "open",
+            "open",
+            True,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "nodeType": 11,
+                    "childNodeCount": 1,
+                    "children": [
+                        {
+                            "type": "node",
+                            "sharedId": any_string,
+                            "value": {
+                                "nodeType": 1,
+                                "localName": "div",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "childNodeCount": 1,
+                                "attributes": {"id": "in-shadow-dom"},
+                                "shadowRoot": None,
+                            },
+                        }
+                    ],
+                    "mode": "open",
+                },
+            },
+        ),
+        (
+            "open",
+            "closed",
+            False,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {"nodeType": 11, "childNodeCount": 1},
+            },
+        ),
+        (
+            "all",
+            "open",
+            True,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "nodeType": 11,
+                    "childNodeCount": 1,
+                    "children": [
+                        {
+                            "type": "node",
+                            "sharedId": any_string,
+                            "value": {
+                                "nodeType": 1,
+                                "localName": "div",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "childNodeCount": 1,
+                                "attributes": {"id": "in-shadow-dom"},
+                                "shadowRoot": None,
+                            },
+                        }
+                    ],
+                    "mode": "open",
+                },
+            },
+        ),
+        (
+            "all",
+            "closed",
+            True,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "nodeType": 11,
+                    "childNodeCount": 1,
+                    "children": [
+                        {
+                            "type": "node",
+                            "sharedId": any_string,
+                            "value": {
+                                "nodeType": 1,
+                                "localName": "div",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "childNodeCount": 1,
+                                "attributes": {"id": "in-shadow-dom"},
+                                "shadowRoot": None,
+                            },
+                        }
+                    ],
+                    "mode": "closed",
+                },
+            },
+        ),
+    ],
+    ids=[
+        "default mode for open shadow root",
+        "default mode for closed shadow root",
+        "'none' mode for open shadow root",
+        "'none' mode for closed shadow root",
+        "'open' mode for open shadow root",
+        "'open' mode for closed shadow root",
+        "'all' mode for open shadow root",
+        "'all' mode for closed shadow root",
+    ],
+)
+async def test_include_shadow_tree_for_custom_element(
+    bidi_session,
+    top_context,
+    get_test_page,
+    include_shadow_tree,
+    shadow_root_mode,
+    contains_children,
+    expected,
+):
+    await bidi_session.browsing_context.navigate(
+        context=top_context["context"],
+        url=get_test_page(shadow_root_mode=shadow_root_mode),
+        wait="complete",
+    )
+    result = await bidi_session.script.call_function(
+        function_declaration="""() => document.querySelector("custom-element")""",
+        target=ContextTarget(top_context["context"]),
+        await_promise=True,
+        serialization_options=SerializationOptions(
+            include_shadow_tree=include_shadow_tree, max_dom_depth=1
+        ),
+    )
+
+    recursive_compare(expected, result["value"]["shadowRoot"])
+
+    # Explicitely check for children because recursive_compare skips it
+    if not contains_children:
+        assert "children" not in result["value"]["shadowRoot"]["value"]
+
+
+@pytest.mark.parametrize(
+    "include_shadow_tree, contains_children, expected",
+    [
+        (
+            None,
+            False,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {"childNodeCount": 1, "mode": "open", "nodeType": 11},
+            },
+        ),
+        (
+            "none",
+            False,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {"childNodeCount": 1, "mode": "open", "nodeType": 11},
+            },
+        ),
+        (
+            "open",
+            True,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "childNodeCount": 1,
+                    "children": [
+                        {
+                            "type": "node",
+                            "sharedId": any_string,
+                            "value": {
+                                "nodeType": 1,
+                                "localName": "div",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "childNodeCount": 1,
+                                "attributes": {"id": "in-shadow-dom"},
+                                "shadowRoot": None,
+                            },
+                        }
+                    ],
+                    "nodeType": 11,
+                    "mode": "open",
+                },
+            },
+        ),
+        (
+            "all",
+            True,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "childNodeCount": 1,
+                    "children": [
+                        {
+                            "type": "node",
+                            "sharedId": any_string,
+                            "value": {
+                                "nodeType": 1,
+                                "localName": "div",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "childNodeCount": 1,
+                                "attributes": {"id": "in-shadow-dom"},
+                                "shadowRoot": None,
+                            },
+                        }
+                    ],
+                    "mode": "open",
+                    "nodeType": 11,
+                },
+            },
+        ),
+    ],
+    ids=[
+        "default mode",
+        "'none' mode",
+        "'open' mode",
+        "'all' mode",
+    ],
+)
+async def test_include_shadow_tree_for_shadow_root(
+    bidi_session,
+    top_context,
+    get_test_page,
+    include_shadow_tree,
+    contains_children,
+    expected
+):
+    await bidi_session.browsing_context.navigate(
+        context=top_context["context"],
+        url=get_test_page(),
+        wait="complete",
+    )
+    result = await bidi_session.script.call_function(
+        function_declaration="""() => document.querySelector("custom-element").shadowRoot""",
+        target=ContextTarget(top_context["context"]),
+        await_promise=True,
+        serialization_options=SerializationOptions(
+            include_shadow_tree=include_shadow_tree, max_dom_depth=1
+        ),
+    )
+
+    recursive_compare(expected, result)
+
+    # Explicitely check for children because recursive_compare skips it
+    if not contains_children:
+        assert "children" not in result["value"]
+
+
+@pytest.mark.parametrize(
+    "max_dom_depth, expected",
+    [
+        (
+            None,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "attributes": {"id": "with-children"},
+                    "childNodeCount": 2,
+                    "localName": "div",
+                    "namespaceURI": "http://www.w3.org/1999/xhtml",
+                    "nodeType": 1,
+                    "shadowRoot": None,
+                },
+            },
+        ),
+        (
+            0,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "attributes": {"id": "with-children"},
+                    "childNodeCount": 2,
+                    "localName": "div",
+                    "namespaceURI": "http://www.w3.org/1999/xhtml",
+                    "nodeType": 1,
+                    "shadowRoot": None,
+                },
+            },
+        ),
+        (
+            1,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "attributes": {"id": "with-children"},
+                    "childNodeCount": 2,
+                    "children": [
+                        {
+                            "sharedId": any_string,
+                            "type": "node",
+                            "value": {
+                                "attributes": {},
+                                "childNodeCount": 1,
+                                "localName": "p",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "nodeType": 1,
+                                "shadowRoot": None,
+                            },
+                        },
+                        {
+                            "sharedId": any_string,
+                            "type": "node",
+                            "value": {
+                                "attributes": {},
+                                "childNodeCount": 0,
+                                "localName": "br",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "nodeType": 1,
+                                "shadowRoot": None,
+                            },
+                        },
+                    ],
+                    "localName": "div",
+                    "namespaceURI": "http://www.w3.org/1999/xhtml",
+                    "nodeType": 1,
+                    "shadowRoot": None,
+                },
+            },
+        ),
+        (
+            2,
+            {
+                "type": "node",
+                "sharedId": any_string,
+                "value": {
+                    "attributes": {"id": "with-children"},
+                    "childNodeCount": 2,
+                    "children": [
+                        {
+                            "sharedId": any_string,
+                            "type": "node",
+                            "value": {
+                                "attributes": {},
+                                "childNodeCount": 1,
+                                "children": [
+                                    {
+                                        "type": "node",
+                                        "sharedId": any_string,
+                                        "value": {
+                                            "nodeType": 1,
+                                            "localName": "span",
+                                            "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                            "childNodeCount": 0,
+                                            "attributes": {},
+                                            "shadowRoot": None,
+                                        },
+                                    }
+                                ],
+                                "localName": "p",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "nodeType": 1,
+                                "shadowRoot": None,
+                            },
+                        },
+                        {
+                            "sharedId": any_string,
+                            "type": "node",
+                            "value": {
+                                "attributes": {},
+                                "childNodeCount": 0,
+                                "localName": "br",
+                                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                "nodeType": 1,
+                                "shadowRoot": None,
+                            },
+                        },
+                    ],
+                    "localName": "div",
+                    "namespaceURI": "http://www.w3.org/1999/xhtml",
+                    "nodeType": 1,
+                    "shadowRoot": None,
+                },
+            },
+        ),
+    ],
+)
+async def test_max_dom_depth(
+    bidi_session, top_context, get_test_page, max_dom_depth, expected
+):
+    await bidi_session.browsing_context.navigate(
+        context=top_context["context"], url=get_test_page(), wait="complete"
+    )
+    result = await bidi_session.script.call_function(
+        function_declaration="""() => document.querySelector("div#with-children")""",
+        target=ContextTarget(top_context["context"]),
+        await_promise=True,
+        serialization_options=SerializationOptions(max_dom_depth=max_dom_depth),
+    )
+
+    recursive_compare(expected, result)
+
+
+async def test_max_dom_depth_null(
+    bidi_session,
+    send_blocking_command,
+    top_context,
+    get_test_page,
+):
+    await bidi_session.browsing_context.navigate(
+        context=top_context["context"], url=get_test_page(), wait="complete"
+    )
+    result = await send_blocking_command(
+        "script.callFunction",
+        {
+            "functionDeclaration": """() => document.querySelector("div#with-children")""",
+            "target": ContextTarget(top_context["context"]),
+            "awaitPromise": True,
+            "serializationOptions": {"maxDomDepth": None},
+        },
+    )
+
+    recursive_compare(
+        {
+            "type": "node",
+            "sharedId": any_string,
+            "value": {
+                "nodeType": 1,
+                "localName": "div",
+                "namespaceURI": "http://www.w3.org/1999/xhtml",
+                "childNodeCount": 2,
+                "children": [
+                    {
+                        "type": "node",
+                        "sharedId": any_string,
+                        "value": {
+                            "nodeType": 1,
+                            "localName": "p",
+                            "namespaceURI": "http://www.w3.org/1999/xhtml",
+                            "childNodeCount": 1,
+                            "children": [
+                                {
+                                    "type": "node",
+                                    "sharedId": any_string,
+                                    "value": {
+                                        "nodeType": 1,
+                                        "localName": "span",
+                                        "namespaceURI": "http://www.w3.org/1999/xhtml",
+                                        "childNodeCount": 0,
+                                        "children": [],
+                                        "attributes": {},
+                                        "shadowRoot": None,
+                                    },
+                                }
+                            ],
+                            "attributes": {},
+                            "shadowRoot": None,
+                        },
+                    },
+                    {
+                        "type": "node",
+                        "sharedId": any_string,
+                        "value": {
+                            "nodeType": 1,
+                            "localName": "br",
+                            "namespaceURI": "http://www.w3.org/1999/xhtml",
+                            "childNodeCount": 0,
+                            "children": [],
+                            "attributes": {},
+                            "shadowRoot": None,
+                        },
+                    },
+                ],
+                "attributes": {"id": "with-children"},
+                "shadowRoot": None,
+            },
+        },
+        result["result"],
+    )
+
+
+@pytest.mark.parametrize(
+    "max_object_depth, expected",
+    [
+        (
+            None,
+            {
+                "type": "array",
+                "value": [
+                    {"type": "number", "value": 1},
+                    {"type": "array", "value": [{"type": "number", "value": 2}]},
+                ],
+            },
+        ),
+        (0, {"type": "array"}),
+        (
+            1,
+            {
+                "type": "array",
+                "value": [
+                    {"type": "number", "value": 1},
+                    {"type": "array"},
+                ],
+            },
+        ),
+        (
+            2,
+            {
+                "type": "array",
+                "value": [
+                    {"type": "number", "value": 1},
+                    {"type": "array", "value": [{"type": "number", "value": 2}]},
+                ],
+            },
+        ),
+    ],
+)
+async def test_max_object_depth(bidi_session, top_context, max_object_depth, expected):
+    result = await bidi_session.script.call_function(
+        function_declaration="() => [1, [2]]",
+        target=ContextTarget(top_context["context"]),
+        await_promise=True,
+        serialization_options=SerializationOptions(max_object_depth=max_object_depth),
+    )
+
+    assert result == expected
diff --git a/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/invalid.py b/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/invalid.py
index 9923d7414e8..666bf4d06e0 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/invalid.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/invalid.py
@@ -135,7 +135,7 @@ async def test_params_max_object_depth_invalid_value(bidi_session, top_context):
 
 
 @pytest.mark.parametrize("include_shadow_tree", [False, 42, {}, []])
-async def test_params_max_object_depth_invalid_type(bidi_session, top_context, include_shadow_tree):
+async def test_params_include_shadow_tree_invalid_type(bidi_session, top_context, include_shadow_tree):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.evaluate(
             expression="1 + 2",
@@ -144,7 +144,8 @@ async def test_params_max_object_depth_invalid_type(bidi_session, top_context, i
             await_promise=True)
 
 
-async def test_params_max_object_depth_invalid_value(bidi_session, top_context):
+async def test_params_include_shadow_tree_invalid_value(
+        bidi_session, top_context):
     with pytest.raises(error.InvalidArgumentException):
         await bidi_session.script.evaluate(
             expression="1 + 2",
diff --git a/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/result.py b/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/result.py
index afdfb5fe42f..faea80a86b6 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/result.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/result.py
@@ -60,10 +60,10 @@ async def test_primitive_values(bidi_session, top_context, expression, expected)
             {
                 "type": "object",
                 "value": [
-                    ["foo", {"type": "object"}],
-                    ["qux", {"type": "string", "value": "quux"}],
                     ["1", {"type": "string", "value": "fred"}],
                     ["2", {"type": "string", "value": "thud"}],
+                    ["foo", {"type": "object"}],
+                    ["qux", {"type": "string", "value": "quux"}],
                 ],
             },
         ),
diff --git a/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/result_node.py b/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/result_node.py
index 89ce95ed21d..a3ca316d027 100644
--- a/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/result_node.py
+++ b/tests/wpt/tests/webdriver/tests/bidi/script/evaluate/result_node.py
@@ -452,6 +452,7 @@ async def test_doctype_node(bidi_session, get_test_page, top_context, expression
                 "sharedId": any_string,
                 "value": {
                     "childNodeCount": 1,
+                    "mode": "open",
                     "nodeType": 11
                 }
             }
diff --git a/tests/wpt/tests/webdriver/tests/support/fixtures.py b/tests/wpt/tests/webdriver/tests/support/fixtures.py
index ba166ae8da8..957be6b0f46 100644
--- a/tests/wpt/tests/webdriver/tests/support/fixtures.py
+++ b/tests/wpt/tests/webdriver/tests/support/fixtures.py
@@ -330,7 +330,7 @@ def get_test_page(iframe, inline):
             <input id="hidden" type="hidden"/>
             <input id="text" type="text"/>
 
-            {iframe(frame_doc)}
+            {iframe(frame_doc, **kwargs)}
 
             <img />
             <svg></svg>
diff --git a/tests/wpt/tests/webdriver/tests/support/inline.py b/tests/wpt/tests/webdriver/tests/support/inline.py
index a0a8d3881ef..26f0491d1a8 100644
--- a/tests/wpt/tests/webdriver/tests/support/inline.py
+++ b/tests/wpt/tests/webdriver/tests/support/inline.py
@@ -1,6 +1,6 @@
 """Helpers for inlining extracts of documents in tests."""
 
-from typing import Literal, Optional
+from typing import Optional
 from urllib.parse import urlencode
 
 
@@ -27,7 +27,7 @@ MIME_TYPES = {
 
 
 def build_inline(build_url, src,
-                 doctype: Literal["html", "xhtml", "xml"] = "html",
+                 doctype: str = "html",
                  mime: Optional[str] = None, charset: Optional[str] = None,
                  parameters = None, **kwargs):
     if mime is None:
diff --git a/tests/wpt/tests/webidl/ecmascript-binding/legacy-platform-object/Set.html b/tests/wpt/tests/webidl/ecmascript-binding/legacy-platform-object/Set.html
index 3134c818590..1390b51cd03 100644
--- a/tests/wpt/tests/webidl/ecmascript-binding/legacy-platform-object/Set.html
+++ b/tests/wpt/tests/webidl/ecmascript-binding/legacy-platform-object/Set.html
@@ -32,6 +32,21 @@
         assert_equals(element.attributes.foo, "foo");
     }, "must allow assigning to a named property on an object which implements a named property getter but not a setter in strict mode");
 
+    test(function() {
+        "use strict";
+        var form = document.createElement("form");
+        assert_equals(form.method, "get");
+        var input = document.createElement("input");
+        input.name = "method";
+        input.id = "method";
+        form.appendChild(input);
+        assert_equals(form.method, input);
+        form.method = "post";
+        assert_equals(form.method, input);
+        input.remove();
+        assert_equals(form.method, "post");
+    }, "must allow setting built-in property on a [LegacyOverrideBuiltIns] object even if a named property shadows it");
+
     var symbol = Symbol();
 
     test(function() {
diff --git a/tests/wpt/tests/webnn/resources/test_data/conv_transpose2d.json b/tests/wpt/tests/webnn/resources/test_data/conv_transpose2d.json
index c7026f91ee5..2fcb317268c 100644
--- a/tests/wpt/tests/webnn/resources/test_data/conv_transpose2d.json
+++ b/tests/wpt/tests/webnn/resources/test_data/conv_transpose2d.json
@@ -1859,6 +1859,321 @@
         "type": "float32"
       }
     },
+    {
+      "name": "convTranspose2d float32 4D input and filter tensors options.inputLayout=nhwc options.filterLayout=iohw",
+      "inputs": {
+        "input": {
+          "shape": [1, 3, 3, 1],
+          "data": [
+            0.05605664967552748,
+            0.7114230061939892,
+            0.6529743817798401,
+            0.3862290922141163,
+            0.38708372734474095,
+            0.9461629334832131,
+            0.0957319185290193,
+            0.9234652551205444,
+            0.6362779541136516
+          ],
+          "type": "float32"
+        },
+        "filter": {
+          "shape": [1, 2, 3, 3],
+          "data": [
+            0.861442276299335,
+            0.6267672619279181,
+            0.6366489967621862,
+            0.8382642064548715,
+            0.11884837321114183,
+            0.9921330460504791,
+            0.3285411258903119,
+            0.8742373539889388,
+            0.7205492498486465,
+            0.9801966684571415,
+            0.06169835353027997,
+            0.3220160786486479,
+            0.7498031716529909,
+            0.39307147694602995,
+            0.1381193362338462,
+            0.283850915413119,
+            0.4235861336377129,
+            0.14485120857485168
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "options": {
+        "inputLayout": "nhwc",
+        "filterLayout": "iohw"
+      },
+      "expected": {
+        "shape": [1, 5, 5, 2],
+        "data": [
+          0.04828956723213196,
+          0.05494653806090355,
+          0.6479843258857727,
+          0.7007930278778076,
+          1.0440847873687744,
+          0.7019880414009094,
+          0.8621897101402283,
+          0.26937708258628845,
+          0.4157154858112335,
+          0.21026825904846191,
+          0.3797043561935425,
+          0.4206119179725647,
+          1.1785486936569214,
+          0.9587093591690063,
+          1.9911006689071655,
+          1.8526650667190552,
+          1.6228916645050049,
+          0.5379507541656494,
+          1.2502111196517944,
+          0.39486807584762573,
+          0.4246464669704437,
+          0.3993436396121979,
+          1.5086332559585571,
+          1.5788191556930542,
+          3.287064790725708,
+          2.121230363845825,
+          2.5666797161102295,
+          1.141642689704895,
+          1.8143054246902466,
+          0.4301592707633972,
+          0.20714078843593597,
+          0.18141157925128937,
+          1.2503143548965454,
+          1.0035220384597778,
+          1.6656538248062134,
+          1.3417718410491943,
+          2.097904920578003,
+          0.8345021605491638,
+          1.313029408454895,
+          0.2249351441860199,
+          0.03145187348127365,
+          0.027173593640327454,
+          0.38708874583244324,
+          0.3026771545410156,
+          1.0853508710861206,
+          0.5856420397758484,
+          1.2216601371765137,
+          0.40328359603881836,
+          0.45846959948539734,
+          0.09216563403606415
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "convTranspose2d float32 4D input and filter tensors options.inputLayout=nhwc options.filterLayout=hwoi",
+      "inputs": {
+        "input": {
+          "shape": [1, 3, 3, 1],
+          "data": [
+            0.05605664967552748,
+            0.7114230061939892,
+            0.6529743817798401,
+            0.3862290922141163,
+            0.38708372734474095,
+            0.9461629334832131,
+            0.0957319185290193,
+            0.9234652551205444,
+            0.6362779541136516
+          ],
+          "type": "float32"
+        },
+        "filter": {
+          "shape": [3, 3, 2, 1],
+          "data": [
+            0.861442276299335,
+            0.9801966684571415,
+            0.6267672619279181,
+            0.06169835353027997,
+            0.6366489967621862,
+            0.3220160786486479,
+            0.8382642064548715,
+            0.7498031716529909,
+            0.11884837321114183,
+            0.39307147694602995,
+            0.9921330460504791,
+            0.1381193362338462,
+            0.3285411258903119,
+            0.283850915413119,
+            0.8742373539889388,
+            0.4235861336377129,
+            0.7205492498486465,
+            0.14485120857485168
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "options": {
+        "inputLayout": "nhwc",
+        "filterLayout": "hwoi"
+      },
+      "expected": {
+        "shape": [1, 5, 5, 2],
+        "data": [
+          0.04828956723213196,
+          0.05494653806090355,
+          0.6479843258857727,
+          0.7007930278778076,
+          1.0440847873687744,
+          0.7019880414009094,
+          0.8621897101402283,
+          0.26937708258628845,
+          0.4157154858112335,
+          0.21026825904846191,
+          0.3797043561935425,
+          0.4206119179725647,
+          1.1785486936569214,
+          0.9587093591690063,
+          1.9911006689071655,
+          1.8526650667190552,
+          1.6228916645050049,
+          0.5379507541656494,
+          1.2502111196517944,
+          0.39486807584762573,
+          0.4246464669704437,
+          0.3993436396121979,
+          1.5086332559585571,
+          1.5788191556930542,
+          3.287064790725708,
+          2.121230363845825,
+          2.5666797161102295,
+          1.141642689704895,
+          1.8143054246902466,
+          0.4301592707633972,
+          0.20714078843593597,
+          0.18141157925128937,
+          1.2503143548965454,
+          1.0035220384597778,
+          1.6656538248062134,
+          1.3417718410491943,
+          2.097904920578003,
+          0.8345021605491638,
+          1.313029408454895,
+          0.2249351441860199,
+          0.03145187348127365,
+          0.027173593640327454,
+          0.38708874583244324,
+          0.3026771545410156,
+          1.0853508710861206,
+          0.5856420397758484,
+          1.2216601371765137,
+          0.40328359603881836,
+          0.45846959948539734,
+          0.09216563403606415
+        ],
+        "type": "float32"
+      }
+    },
+    {
+      "name": "convTranspose2d float32 4D input and filter tensors options.inputLayout=nhwc options.filterLayout=ohwi",
+      "inputs": {
+        "input": {
+          "shape": [1, 3, 3, 1],
+          "data": [
+            0.05605664967552748,
+            0.7114230061939892,
+            0.6529743817798401,
+            0.3862290922141163,
+            0.38708372734474095,
+            0.9461629334832131,
+            0.0957319185290193,
+            0.9234652551205444,
+            0.6362779541136516
+          ],
+          "type": "float32"
+        },
+        "filter": {
+          "shape": [2, 3, 3, 1],
+          "data": [
+            0.861442276299335,
+            0.6267672619279181,
+            0.6366489967621862,
+            0.8382642064548715,
+            0.11884837321114183,
+            0.9921330460504791,
+            0.3285411258903119,
+            0.8742373539889388,
+            0.7205492498486465,
+            0.9801966684571415,
+            0.06169835353027997,
+            0.3220160786486479,
+            0.7498031716529909,
+            0.39307147694602995,
+            0.1381193362338462,
+            0.283850915413119,
+            0.4235861336377129,
+            0.14485120857485168
+          ],
+          "type": "float32",
+          "constant": true
+        }
+      },
+      "options": {
+        "inputLayout": "nhwc",
+        "filterLayout": "ohwi"
+      },
+      "expected": {
+        "shape": [1, 5, 5, 2],
+        "data": [
+          0.04828956723213196,
+          0.05494653806090355,
+          0.6479843258857727,
+          0.7007930278778076,
+          1.0440847873687744,
+          0.7019880414009094,
+          0.8621897101402283,
+          0.26937708258628845,
+          0.4157154858112335,
+          0.21026825904846191,
+          0.3797043561935425,
+          0.4206119179725647,
+          1.1785486936569214,
+          0.9587093591690063,
+          1.9911006689071655,
+          1.8526650667190552,
+          1.6228916645050049,
+          0.5379507541656494,
+          1.2502111196517944,
+          0.39486807584762573,
+          0.4246464669704437,
+          0.3993436396121979,
+          1.5086332559585571,
+          1.5788191556930542,
+          3.287064790725708,
+          2.121230363845825,
+          2.5666797161102295,
+          1.141642689704895,
+          1.8143054246902466,
+          0.4301592707633972,
+          0.20714078843593597,
+          0.18141157925128937,
+          1.2503143548965454,
+          1.0035220384597778,
+          1.6656538248062134,
+          1.3417718410491943,
+          2.097904920578003,
+          0.8345021605491638,
+          1.313029408454895,
+          0.2249351441860199,
+          0.03145187348127365,
+          0.027173593640327454,
+          0.38708874583244324,
+          0.3026771545410156,
+          1.0853508710861206,
+          0.5856420397758484,
+          1.2216601371765137,
+          0.40328359603881836,
+          0.45846959948539734,
+          0.09216563403606415
+        ],
+        "type": "float32"
+      }
+    },
     {
       "name": "convTranspose2d float32 4D input and filter tensors options.bias",
       "inputs": {
diff --git a/tests/wpt/tests/webnn/resources/test_data/softplus.json b/tests/wpt/tests/webnn/resources/test_data/softplus.json
new file mode 100644
index 00000000000..2b26e1439e3
--- /dev/null
+++ b/tests/wpt/tests/webnn/resources/test_data/softplus.json
@@ -0,0 +1,472 @@
+{ // softplus: The calculation follows the expression ln(1 + exp(steepness * x)) / steepness.
+  "tests": [
+    {
+      "name": "softplus float32 1D tensor default options", // default options: {steepness: 1}
+      "inputs": {
+        "x": {
+          "shape": [24],
+          "data": [
+            5.626614582460632,
+            5.167487045486892,
+            4.0146356193402655,
+            9.48003299650489,
+            9.989938045769978,
+            7.0654412821434125,
+            2.132681001794825,
+            8.187151346059956,
+            5.169976220175496,
+            2.1044997879382077,
+            3.523329401138895,
+            4.136340646976668,
+            1.7418719794295656,
+            5.145224066290767,
+            5.015515309165462,
+            0.045903935074711466,
+            2.9570898924917377,
+            3.959244712098706,
+            5.517926978255181,
+            7.192322388417094,
+            8.76492480390928,
+            1.3734704039113388,
+            8.930669016709397,
+            8.660283210871246
+          ],
+          "type": "float32"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [24],
+        "data": [
+          5.630208969116211,
+          5.1731696128845215,
+          4.032524108886719,
+          9.480109214782715,
+          9.989983558654785,
+          7.0662946701049805,
+          2.2446866035461426,
+          8.187429428100586,
+          5.175644874572754,
+          2.219529390335083,
+          3.552403688430786,
+          4.152195453643799,
+          1.903303623199463,
+          5.151034355163574,
+          5.022127628326416,
+          0.7163625359535217,
+          3.007754325866699,
+          3.978142499923706,
+          5.521933078765869,
+          7.1930742263793945,
+          8.765081405639648,
+          1.5991919040679932,
+          8.930801391601562,
+          8.660456657409668
+        ],
+        "type": "float32"
+     }
+    },
+    {
+      "name": "softplus float32 2D tensor default options",
+      "inputs": {
+        "x": {
+          "shape": [4, 6],
+          "data": [
+            5.626614582460632,
+            5.167487045486892,
+            4.0146356193402655,
+            9.48003299650489,
+            9.989938045769978,
+            7.0654412821434125,
+            2.132681001794825,
+            8.187151346059956,
+            5.169976220175496,
+            2.1044997879382077,
+            3.523329401138895,
+            4.136340646976668,
+            1.7418719794295656,
+            5.145224066290767,
+            5.015515309165462,
+            0.045903935074711466,
+            2.9570898924917377,
+            3.959244712098706,
+            5.517926978255181,
+            7.192322388417094,
+            8.76492480390928,
+            1.3734704039113388,
+            8.930669016709397,
+            8.660283210871246
+          ],
+          "type": "float32"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [4, 6],
+        "data": [
+          5.630208969116211,
+          5.1731696128845215,
+          4.032524108886719,
+          9.480109214782715,
+          9.989983558654785,
+          7.0662946701049805,
+          2.2446866035461426,
+          8.187429428100586,
+          5.175644874572754,
+          2.219529390335083,
+          3.552403688430786,
+          4.152195453643799,
+          1.903303623199463,
+          5.151034355163574,
+          5.022127628326416,
+          0.7163625359535217,
+          3.007754325866699,
+          3.978142499923706,
+          5.521933078765869,
+          7.1930742263793945,
+          8.765081405639648,
+          1.5991919040679932,
+          8.930801391601562,
+          8.660456657409668
+        ],
+        "type": "float32"
+     }
+    },
+    {
+      "name": "softplus float32 3D tensor default options",
+      "inputs": {
+        "x": {
+          "shape": [2, 3, 4],
+          "data": [
+            5.626614582460632,
+            5.167487045486892,
+            4.0146356193402655,
+            9.48003299650489,
+            9.989938045769978,
+            7.0654412821434125,
+            2.132681001794825,
+            8.187151346059956,
+            5.169976220175496,
+            2.1044997879382077,
+            3.523329401138895,
+            4.136340646976668,
+            1.7418719794295656,
+            5.145224066290767,
+            5.015515309165462,
+            0.045903935074711466,
+            2.9570898924917377,
+            3.959244712098706,
+            5.517926978255181,
+            7.192322388417094,
+            8.76492480390928,
+            1.3734704039113388,
+            8.930669016709397,
+            8.660283210871246
+          ],
+          "type": "float32"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [2, 3, 4],
+        "data": [
+          5.630208969116211,
+          5.1731696128845215,
+          4.032524108886719,
+          9.480109214782715,
+          9.989983558654785,
+          7.0662946701049805,
+          2.2446866035461426,
+          8.187429428100586,
+          5.175644874572754,
+          2.219529390335083,
+          3.552403688430786,
+          4.152195453643799,
+          1.903303623199463,
+          5.151034355163574,
+          5.022127628326416,
+          0.7163625359535217,
+          3.007754325866699,
+          3.978142499923706,
+          5.521933078765869,
+          7.1930742263793945,
+          8.765081405639648,
+          1.5991919040679932,
+          8.930801391601562,
+          8.660456657409668
+        ],
+        "type": "float32"
+     }
+    },
+    {
+      "name": "softplus float32 4D tensor default options",
+      "inputs": {
+        "x": {
+          "shape": [1, 2, 3, 4],
+          "data": [
+            5.626614582460632,
+            5.167487045486892,
+            4.0146356193402655,
+            9.48003299650489,
+            9.989938045769978,
+            7.0654412821434125,
+            2.132681001794825,
+            8.187151346059956,
+            5.169976220175496,
+            2.1044997879382077,
+            3.523329401138895,
+            4.136340646976668,
+            1.7418719794295656,
+            5.145224066290767,
+            5.015515309165462,
+            0.045903935074711466,
+            2.9570898924917377,
+            3.959244712098706,
+            5.517926978255181,
+            7.192322388417094,
+            8.76492480390928,
+            1.3734704039113388,
+            8.930669016709397,
+            8.660283210871246
+          ],
+          "type": "float32"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [1, 2, 3, 4],
+        "data": [
+          5.630208969116211,
+          5.1731696128845215,
+          4.032524108886719,
+          9.480109214782715,
+          9.989983558654785,
+          7.0662946701049805,
+          2.2446866035461426,
+          8.187429428100586,
+          5.175644874572754,
+          2.219529390335083,
+          3.552403688430786,
+          4.152195453643799,
+          1.903303623199463,
+          5.151034355163574,
+          5.022127628326416,
+          0.7163625359535217,
+          3.007754325866699,
+          3.978142499923706,
+          5.521933078765869,
+          7.1930742263793945,
+          8.765081405639648,
+          1.5991919040679932,
+          8.930801391601562,
+          8.660456657409668
+        ],
+        "type": "float32"
+     }
+    },
+    {
+      "name": "softplus float32 5D tensor default options",
+      "inputs": {
+        "x": {
+          "shape": [1, 2, 1, 3, 4],
+          "data": [
+            5.626614582460632,
+            5.167487045486892,
+            4.0146356193402655,
+            9.48003299650489,
+            9.989938045769978,
+            7.0654412821434125,
+            2.132681001794825,
+            8.187151346059956,
+            5.169976220175496,
+            2.1044997879382077,
+            3.523329401138895,
+            4.136340646976668,
+            1.7418719794295656,
+            5.145224066290767,
+            5.015515309165462,
+            0.045903935074711466,
+            2.9570898924917377,
+            3.959244712098706,
+            5.517926978255181,
+            7.192322388417094,
+            8.76492480390928,
+            1.3734704039113388,
+            8.930669016709397,
+            8.660283210871246
+          ],
+          "type": "float32"
+        }
+      },
+      "expected": {
+        "name": "output",
+        "shape": [1, 2, 1, 3, 4],
+        "data": [
+          5.630208969116211,
+          5.1731696128845215,
+          4.032524108886719,
+          9.480109214782715,
+          9.989983558654785,
+          7.0662946701049805,
+          2.2446866035461426,
+          8.187429428100586,
+          5.175644874572754,
+          2.219529390335083,
+          3.552403688430786,
+          4.152195453643799,
+          1.903303623199463,
+          5.151034355163574,
+          5.022127628326416,
+          0.7163625359535217,
+          3.007754325866699,
+          3.978142499923706,
+          5.521933078765869,
+          7.1930742263793945,
+          8.765081405639648,
+          1.5991919040679932,
+          8.930801391601562,
+          8.660456657409668
+        ],
+        "type": "float32"
+     }
+    },
+    {
+      "name": "softplus both positive float32 4D tensor and options.steepness",
+      "inputs": {
+        "x": {
+          "shape": [1, 2, 3, 4],
+          "data": [
+            5.626614582460632,
+            5.167487045486892,
+            4.0146356193402655,
+            9.48003299650489,
+            9.989938045769978,
+            7.0654412821434125,
+            2.132681001794825,
+            8.187151346059956,
+            5.169976220175496,
+            2.1044997879382077,
+            3.523329401138895,
+            4.136340646976668,
+            1.7418719794295656,
+            5.145224066290767,
+            5.015515309165462,
+            0.045903935074711466,
+            2.9570898924917377,
+            3.959244712098706,
+            5.517926978255181,
+            7.192322388417094,
+            8.76492480390928,
+            1.3734704039113388,
+            8.930669016709397,
+            8.660283210871246
+          ],
+          "type": "float32"
+        }
+      },
+      "options": {
+        "steepness": 1.5104469060897827
+      },
+      "expected": {
+        "name": "output",
+        "shape": [1, 2, 3, 4],
+        "data": [
+          5.626749515533447,
+          5.167757034301758,
+          4.016173362731934,
+          9.480032920837402,
+          9.989937782287598,
+          7.065456390380859,
+          2.158585548400879,
+          8.187153816223145,
+          5.170245170593262,
+          2.1315081119537354,
+          3.526555061340332,
+          4.137620449066162,
+          1.7879058122634888,
+          5.145503044128418,
+          5.015854835510254,
+          0.4822517931461334,
+          2.964651584625244,
+          3.960916519165039,
+          5.518085956573486,
+          7.19233512878418,
+          8.764925956726074,
+          1.4518096446990967,
+          8.930669784545898,
+          8.660284042358398
+        ],
+        "type": "float32"
+     }
+    },
+    {
+      "name": "softplus both negative float32 4D tensor and options.steepness",
+      "inputs": {
+        "x": {
+          "shape": [1, 2, 3, 4],
+          "data": [
+            -5.584833476104802,
+            -8.188738740810354,
+            -8.981280004134987,
+            -1.7315531899284586,
+            -0.7266543578958906,
+            -0.0034800119290885334,
+            -7.378389455552106,
+            -8.907525953796949,
+            -6.0483786568116304,
+            -6.328561142365743,
+            -2.6006513567654626,
+            -5.02005264196455,
+            -2.0647716093484414,
+            -1.5499896740695434,
+            -2.221591675966657,
+            -1.1088025713211636,
+            -2.7854626064634385,
+            -2.105037489961294,
+            -5.144277741727352,
+            -5.081219916574497,
+            -7.499426297617635,
+            -2.4305558382286545,
+            -8.390520024268328,
+            -0.07117499202643174
+          ],
+          "type": "float32"
+        }
+      },
+      "options": {
+        "steepness": -1.2985155767552126
+      },
+      "expected": {
+        "name": "output",
+        "shape": [1, 2, 3, 4],
+        "data": [
+          -5.585379123687744,
+          -8.188756942749023,
+          -8.981287002563477,
+          -1.8088372945785522,
+          -0.9798305630683899,
+          -0.5355416536331177,
+          -7.378442287445068,
+          -8.907533645629883,
+          -6.048677444458008,
+          -6.328769207000732,
+          -2.626511573791504,
+          -5.021188259124756,
+          -2.1157851219177246,
+          -1.6465802192687988,
+          -2.2634570598602295,
+          -1.2725814580917358,
+          -2.805877923965454,
+          -2.1535322666168213,
+          -5.145244121551514,
+          -5.082269191741943,
+          -7.499471664428711,
+          -2.4626762866973877,
+          -8.390534400939941,
+          -0.5702091455459595
+        ],
+        "type": "float32"
+     }
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tests/wpt/tests/webnn/resources/utils.js b/tests/wpt/tests/webnn/resources/utils.js
index 37748fd57a4..920459275d4 100644
--- a/tests/wpt/tests/webnn/resources/utils.js
+++ b/tests/wpt/tests/webnn/resources/utils.js
@@ -318,6 +318,7 @@ const PrecisionMetrics = {
   sigmoid: {ULP: {float32: 32+2, float16: 3}}, // float32 (leaving a few ULP for roundoff)
   slice: {ULP: {float32: 0, float16: 0}},
   softmax: {ULP: {float32: getSoftmaxPrecisionTolerance, float16: getSoftmaxPrecisionTolerance}},
+  softplus: {ULP: {float32: 18, float16: 18}},
   softsign: {ULP: {float32: 3, float16: 3}},
   split: {ULP: {float32: 0, float16: 0}},
   squeeze: {ULP: {float32: 0, float16: 0}},
diff --git a/tests/wpt/tests/webnn/softplus.https.any.js b/tests/wpt/tests/webnn/softplus.https.any.js
new file mode 100644
index 00000000000..7096f64a043
--- /dev/null
+++ b/tests/wpt/tests/webnn/softplus.https.any.js
@@ -0,0 +1,10 @@
+// META: title=test WebNN API softplus operation
+// META: global=window,dedicatedworker
+// META: script=./resources/utils.js
+// META: timeout=long
+
+'use strict';
+
+// https://webmachinelearning.github.io/webnn/#api-mlgraphbuilder-softplus
+
+testWebNNOperation('softplus', buildOperationWithSingleInput);
\ No newline at end of file
diff --git a/tests/wpt/tests/webrtc-extensions/RTCRtpTransceiver-headerExtensionControl.html b/tests/wpt/tests/webrtc-extensions/RTCRtpTransceiver-headerExtensionControl.html
index 79eba02727b..796d35dcb6b 100644
--- a/tests/wpt/tests/webrtc-extensions/RTCRtpTransceiver-headerExtensionControl.html
+++ b/tests/wpt/tests/webrtc-extensions/RTCRtpTransceiver-headerExtensionControl.html
@@ -94,7 +94,7 @@ test(t => {
   t.add_cleanup(() => pc.close());
   const transceiver = pc.addTransceiver('audio');
   const capabilities = transceiver.getHeaderExtensionsToNegotiate();
-  let capability = capabilities.find((capability) => {
+  const capability = capabilities.find((capability) => {
       return capability.uri === 'urn:ietf:params:rtp-hdrext:sdes:mid';
   });
   ['sendonly', 'recvonly', 'inactive', 'stopped'].map(direction => {
@@ -109,14 +109,14 @@ test(t => {
   const pc = new RTCPeerConnection();
   t.add_cleanup(() => pc.close());
   const transceiver = pc.addTransceiver('audio');
-  let capabilities = transceiver.getHeaderExtensionsToNegotiate();
-  let selected_capability = capabilities.find((capability) => {
+  const capabilities = transceiver.getHeaderExtensionsToNegotiate();
+  const selected_capability = capabilities.find((capability) => {
       return capability.direction === 'sendrecv' &&
              capability.uri !== 'urn:ietf:params:rtp-hdrext:sdes:mid';
   });
   selected_capability.direction = 'stopped';
   const offered_capabilities = transceiver.getHeaderExtensionsToNegotiate();
-  let altered_capability = capabilities.find((capability) => {
+  const altered_capability = capabilities.find((capability) => {
       return capability.uri === selected_capability.uri &&
              capability.direction === 'stopped';
   });
@@ -292,4 +292,66 @@ promise_test(async t => {
   }
 }, 'Prior to negotiation, getNegotiatedHeaderExtensions() returns `stopped` for all extensions.');
 
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+
+  // Disable a non-mandatory extension before first negotiation.
+  const transceiver = pc1.addTransceiver('video');
+  const capabilities = transceiver.getHeaderExtensionsToNegotiate();
+  const selected_capability = capabilities.find((capability) => {
+      return capability.direction === 'sendrecv' &&
+             capability.uri !== 'urn:ietf:params:rtp-hdrext:sdes:mid';
+  });
+  selected_capability.direction = 'stopped';
+  transceiver.setHeaderExtensionsToNegotiate(capabilities);
+
+  await negotiate(pc1, pc2);
+  const negotiated_capabilites = transceiver.getNegotiatedHeaderExtensions();
+
+  const local_negotiated = transceiver.getNegotiatedHeaderExtensions().find(ext => {
+    return ext.uri === selected_capability.uri;
+  });
+  assert_equals(local_negotiated.direction, 'stopped');
+  const remote_negotiated = pc2.getTransceivers()[0].getNegotiatedHeaderExtensions().find(ext => {
+    return ext.uri === selected_capability.uri;
+  });
+  assert_equals(remote_negotiated.direction, 'stopped');
+}, 'Answer header extensions are a subset of the offered header extensions');
+
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  t.add_cleanup(() => pc2.close());
+
+  // Disable a non-mandatory extension before first negotiation.
+  const transceiver = pc1.addTransceiver('video');
+  const capabilities = transceiver.getHeaderExtensionsToNegotiate();
+  const selected_capability = capabilities.find((capability) => {
+      return capability.direction === 'sendrecv' &&
+             capability.uri !== 'urn:ietf:params:rtp-hdrext:sdes:mid';
+  });
+  selected_capability.direction = 'stopped';
+  transceiver.setHeaderExtensionsToNegotiate(capabilities);
+
+  await negotiate(pc1, pc2);
+  // Negotiate, switching sides.
+  await negotiate(pc2, pc1);
+
+  // PC2 will re-offer the extension.
+  const remote_reoffered = pc2.getTransceivers()[0].getHeaderExtensionsToNegotiate().find(ext => {
+    return ext.uri === selected_capability.uri;
+  });
+  assert_equals(remote_reoffered.direction, 'sendrecv');
+
+  // But PC1 will still reject the extension.
+  const negotiated_capabilites = transceiver.getNegotiatedHeaderExtensions();
+  const local_negotiated = transceiver.getNegotiatedHeaderExtensions().find(ext => {
+    return ext.uri === selected_capability.uri;
+  });
+  assert_equals(local_negotiated.direction, 'stopped');
+}, 'A subsequent offer from the other side will reoffer extensions not negotiated by the initial offerer');
 </script>
diff --git a/tests/wpt/tests/webrtc/RTCPeerConnection-iceConnectionState.https.html b/tests/wpt/tests/webrtc/RTCPeerConnection-iceConnectionState.https.html
index 5083be6cdfd..5361cb2c1af 100644
--- a/tests/wpt/tests/webrtc/RTCPeerConnection-iceConnectionState.https.html
+++ b/tests/wpt/tests/webrtc/RTCPeerConnection-iceConnectionState.https.html
@@ -280,39 +280,37 @@ async_test(t => {
   */
 
 for (let bundle_policy of ['balanced', 'max-bundle', 'max-compat']) {
-
-
-    promise_test(async t => {
-      const caller = new RTCPeerConnection({bundlePolicy: bundle_policy});
-      t.add_cleanup(() => caller.close());
-      const stream = await getNoiseStream(
-          {audio: true, video:true});
-      t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
-      const [track1, track2] = stream.getTracks();
-      const sender1 = caller.addTrack(track1);
-      const sender2 = caller.addTrack(track2);
-      caller.createDataChannel('datachannel');
-      const callee = new RTCPeerConnection();
-      t.add_cleanup(() => callee.close());
-      exchangeIceCandidates(caller, callee);
-      const offer = await caller.createOffer();
-      await caller.setLocalDescription(offer);
-      const [caller_transceiver1, caller_transceiver2] = caller.getTransceivers();
-      assert_equals(sender1.transport, caller_transceiver1.sender.transport);
-      await callee.setRemoteDescription(offer);
-      const [callee_transceiver1, callee_transceiver2] = callee.getTransceivers();
-      const answer = await callee.createAnswer();
-      await callee.setLocalDescription(answer);
-      await caller.setRemoteDescription(answer);
-      // At this point, we should have a single ICE transport, and it
-      // should eventually get to the "connected" state.
-      await waitForState(caller_transceiver1.receiver.transport.iceTransport,
-                         'connected');
-      // The PeerConnection's iceConnectionState should therefore be 'connected'
-      assert_equals(caller.iceConnectionState, 'connected',
-                    'PC.iceConnectionState:');
-    }, 'iceConnectionState changes at the right time, with bundle policy ' +
-                 bundle_policy);
+  promise_test(async t => {
+    const caller = new RTCPeerConnection({bundlePolicy: bundle_policy});
+    t.add_cleanup(() => caller.close());
+    const stream = await getNoiseStream(
+        {audio: true, video:true});
+    t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
+    const [track1, track2] = stream.getTracks();
+    const sender1 = caller.addTrack(track1);
+    const sender2 = caller.addTrack(track2);
+    caller.createDataChannel('datachannel');
+    const callee = new RTCPeerConnection();
+    t.add_cleanup(() => callee.close());
+    exchangeIceCandidates(caller, callee);
+    const offer = await caller.createOffer();
+    await caller.setLocalDescription(offer);
+    const [caller_transceiver1, caller_transceiver2] = caller.getTransceivers();
+    assert_equals(sender1.transport, caller_transceiver1.sender.transport);
+    await callee.setRemoteDescription(offer);
+    const [callee_transceiver1, callee_transceiver2] = callee.getTransceivers();
+    const answer = await callee.createAnswer();
+    await callee.setLocalDescription(answer);
+    await caller.setRemoteDescription(answer);
+    // At this point, we should have a single ICE transport, and it
+    // should eventually get to the "connected" state.
+    await waitForState(caller_transceiver1.receiver.transport.iceTransport,
+                        'connected');
+    // The PeerConnection's iceConnectionState should therefore be 'connected'
+    assert_equals(caller.iceConnectionState, 'connected',
+                  'PC.iceConnectionState:');
+  }, 'iceConnectionState changes at the right time, with bundle policy ' +
+                bundle_policy);
 }
 
 promise_test(async t => {
@@ -393,4 +391,24 @@ promise_test(async t => {
   await new Promise(r => t.step_timeout(r, 100));
 }, 'Closing a PeerConnection should not fire iceconnectionstatechange event');
 
+promise_test(async t => {
+  const pc1 = new RTCPeerConnection();
+  t.add_cleanup(() => pc1.close());
+  const pc2 = new RTCPeerConnection();
+  const stream = await getNoiseStream({ audio: true });
+  t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
+
+  stream.getTracks().forEach(track => pc1.addTrack(track, stream));
+  // Only signal candidate from 1->2.
+  pc1.onicecandidate = e => pc2.addIceCandidate(e.candidate);
+  pc1.iceStates = [pc1.iceConnectionState];
+  pc1.oniceconnectionstatechange = () => {
+    pc1.iceStates.push(pc1.iceConnectionState);
+  };
+  exchangeOfferAnswer(pc1, pc2);
+  await listenToIceConnected(pc2);
+
+  assert_true(pc1.iceStates.length >= 2);
+  assert_equals(pc1.iceStates[1], 'checking');
+}, 'iceConnectionState can go to checking without explictly calling addIceCandidate');
 </script>
diff --git a/tests/wpt/tests/websockets/constants.sub.js b/tests/wpt/tests/websockets/constants.sub.js
index d8e340d304b..fd3c3b84b96 100644
--- a/tests/wpt/tests/websockets/constants.sub.js
+++ b/tests/wpt/tests/websockets/constants.sub.js
@@ -1,14 +1,14 @@
 const __SERVER__NAME = "{{host}}";
 const __PATH = "echo";
 
-var __SCHEME;
-var __PORT;
-if (url_has_variant('wss')) {
-  __SCHEME = 'wss';
-  __PORT = "{{ports[wss][0]}}";
-} else if (url_has_flag('h2')) {
+let __SCHEME;
+let __PORT;
+if (url_has_flag('h2')) {
   __SCHEME = 'wss';
   __PORT = "{{ports[h2][0]}}";
+} else if (url_has_variant('wss') || location.protocol === 'https:') {
+  __SCHEME = 'wss';
+  __PORT = "{{ports[wss][0]}}";
 } else {
   __SCHEME = 'ws';
   __PORT = "{{ports[ws][0]}}";
@@ -74,6 +74,12 @@ function CreateWebSocketWithRepeatedProtocolsCaseInsensitive() {
   wsocket = new WebSocket(url, ["echo", "eCho"]);
 }
 
+function CreateInsecureWebSocket() {
+  IsWebSocket();
+  const url = `ws://${__SERVER__NAME}:{{ports[ws][0]}}/${__PATH}`;
+  return new WebSocket(url);
+}
+
 function CreateWebSocket(isProtocol, isProtocols) {
   IsWebSocket();
   const url = SCHEME_DOMAIN_PORT + "/" + __PATH;
diff --git a/tests/wpt/tests/websockets/mixed-content.https.any.js b/tests/wpt/tests/websockets/mixed-content.https.any.js
new file mode 100644
index 00000000000..b7a6d8381da
--- /dev/null
+++ b/tests/wpt/tests/websockets/mixed-content.https.any.js
@@ -0,0 +1,7 @@
+// META: global=window,worker
+// META: script=constants.sub.js
+
+test(() => {
+  assert_throws_dom('SecurityError', () => CreateInsecureWebSocket(),
+                    'constructor should throw');
+}, 'constructing an insecure WebSocket in a secure context should throw');