diff --git a/tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini b/tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini
index 76b44d9e9cf..3605e8f3fc9 100644
--- a/tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini
@@ -4,7 +4,7 @@
     expected: TIMEOUT
 
   [Opening a blob URL in a new window immediately before revoking it works.]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Fetching a blob URL immediately before revoking it works in an iframe.]
     expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
new file mode 100644
index 00000000000..f64b45fea6b
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-002.html]
+  [Hit test float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
new file mode 100644
index 00000000000..4bfb0c2053a
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-004.html]
+  [Miss float below something else]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/mediaqueries/aspect-ratio-004.html.ini b/tests/wpt/metadata-layout-2020/css/mediaqueries/aspect-ratio-004.html.ini
new file mode 100644
index 00000000000..f0aa608d5d2
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/mediaqueries/aspect-ratio-004.html.ini
@@ -0,0 +1,2 @@
+[aspect-ratio-004.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/mediaqueries/device-aspect-ratio-002.html.ini b/tests/wpt/metadata-layout-2020/css/mediaqueries/device-aspect-ratio-002.html.ini
new file mode 100644
index 00000000000..dba52cd9842
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/mediaqueries/device-aspect-ratio-002.html.ini
@@ -0,0 +1,2 @@
+[device-aspect-ratio-002.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
index 4ba015fc3a6..b9b8b6fc366 100644
--- a/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
@@ -312,21 +312,21 @@
   [Response: combined response Content-Type: text/html;" \\" text/plain ";charset=GBK]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/html */*]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
+  [<iframe>: combined response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini
index d2df9b78483..c7413d589dc 100644
--- a/tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini
@@ -56,3 +56,9 @@
   [separate text/javascript x/x]
     expected: FAIL
 
+  [separate text/javascript;charset=windows-1252 error text/javascript]
+    expected: FAIL
+
+  [separate text/javascript;charset=windows-1252  text/javascript]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
index 3f0c77d1871..30e1b851fd4 100644
--- a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,9 +11,3 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
-  [X-Content-Type-Options%3A%20%22nosniFF%22]
-    expected: FAIL
-
-  [X-Content-Type-Options%3A%20%2Cnosniff]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
deleted file mode 100644
index 385376c7321..00000000000
--- a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_4.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
deleted file mode 100644
index dc2e45516de..00000000000
--- a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_5.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index 338d283eb0e..295031c1812 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_escaping-3.html]
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index d913fcbb129..3080be9afc0 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_nonescaping-1.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index f4f994c5d6f..7a36937927c 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,5 +1,4 @@
 [iframe_sandbox_popups_nonescaping-3.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
new file mode 100644
index 00000000000..3ad8df021f5
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
@@ -0,0 +1,8 @@
+[htmlanchorelement_noopener.html]
+  expected: TIMEOUT
+  [Check that targeting of rel=noopener with a given name reuses an existing window with that name]
+    expected: FAIL
+
+  [Check that rel=noopener with target=_parent does a normal load]
+    expected: NOTRUN
+
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
index a1effd5f801..5ddb9bfeff6 100644
--- a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
@@ -1,9 +1,10 @@
 [promise-job-entry.html]
+  expected: TIMEOUT
   [Fulfillment handler on fulfilled promise]
     expected: FAIL
 
   [Rejection handler on pending-then-rejected promise]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Sanity check: this all works as expected with no promises involved]
     expected: FAIL
@@ -15,5 +16,5 @@
     expected: FAIL
 
   [Fulfillment handler on pending-then-fulfilled promise]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini
new file mode 100644
index 00000000000..663a1f8fa30
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini
@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini b/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
index d4f62ed7113..faa00f45ecf 100644
--- a/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
+++ b/tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini
@@ -7,7 +7,7 @@
     expected: FAIL
 
   [Opening a blob URL in a new window immediately before revoking it works.]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Opening a blob URL in a noopener about:blank window immediately before revoking it works.]
     expected: TIMEOUT
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 5116a261dd9..e51f3daa7cd 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -208048,7 +208048,7 @@
       ]
      ],
      "aspect-ratio-002.html": [
-      "b4a25eebb274424e2cc8bbf7afe27a8492e08127",
+      "78eee374bf78e35cbcdd3fa3cd10cd6aff0ad7f0",
       [
        null,
        [
@@ -208074,7 +208074,7 @@
       ]
      ],
      "aspect-ratio-004.html": [
-      "b4b2e860d872ae684615dce3c6848e0a4a5c369f",
+      "cc7afda3946638dfed30febd9978a11316f4a447",
       [
        null,
        [
@@ -208126,7 +208126,7 @@
       ]
      ],
      "device-aspect-ratio-002.html": [
-      "52c985aafa06505aaad2a58430bd30fd5c20e116",
+      "5acc4c30b6f7dcc9bd832e0417b78888c0f53cd4",
       [
        null,
        [
@@ -208152,7 +208152,7 @@
       ]
      ],
      "device-aspect-ratio-004.html": [
-      "cd949145229c41a4e13767bf184e30f1459f2859",
+      "adca53cf09738b88a756f17d4e72db5df2626b20",
       [
        null,
        [
@@ -215380,7 +215380,7 @@
          ]
         ],
         "flexbox-column-row-gap-004.html": [
-         "d94571d8d7146cb4a584364837e4a70960801904",
+         "0d86b3818ff02aae7cb05d527bb487b653eebf3d",
          [
           null,
           [
@@ -312004,7 +312004,7 @@
      ]
     },
     "requirements.txt": [
-     "634dfe6209214725bb45217e72210f16c9e2b9b7",
+     "b54096f2d662de86e99c04ad6122cc1aa271b2c7",
      []
     ],
     "selectors": {
@@ -313368,7 +313368,7 @@
          []
         ],
         "reftest.list": [
-         "1c5b5447c7049a61174659944e7ab283f189b164",
+         "0bde2a8c8e30fbaa99affb5b75fe025ac2249be5",
          []
         ]
        },
@@ -313960,7 +313960,7 @@
          []
         ],
         "flexbox-column-row-gap-004-ref.html": [
-         "c23c7b176d74ee5765f3921da42b980af02e36ec",
+         "0b40fb2d6267157f391a8a020af3868fd5d783a2",
          []
         ],
         "flexbox-definite-sizes-001-ref.html": [
@@ -314352,7 +314352,7 @@
          []
         ],
         "reftest.list": [
-         "2493ab155b06d9ce974c8d0348e2f2582eb7daec",
+         "8e2c24584021a59b4e6292537ef44a80a721d191",
          []
         ],
         "support": {
@@ -333804,7 +333804,7 @@
      []
     ],
     "web-animations.idl": [
-     "64265c3bf3fc32cd4071d6d8386a00578f67f49f",
+     "ae64bb867eb23d6c491d3e9fee743c7cf8963236",
      []
     ],
     "web-bluetooth.idl": [
@@ -343699,7 +343699,7 @@
         []
        ],
        "test_valid.py": [
-        "c0863dfb2f5af338d13f5e6b7847838e33bc2a8f",
+        "47cbc2e87bb80597dd980e9f98bc413b0416b552",
         []
        ]
       }
@@ -349427,7 +349427,7 @@
       ]
      },
      "requirements.txt": [
-      "9b84e7334bbcb0702e9379d49192e4cc38a5e1c5",
+      "5310721bbb90fa94b90b4c10d202fc5a13c04d58",
       []
      ],
      "requirements_android_webview.txt": [
@@ -391439,7 +391439,7 @@
       ]
      ],
      "slotted-parsing.html": [
-      "2c55a0ded0918b585443f255e81a2d3a2eaa3350",
+      "f0062c86744f07a1522b164e453d26c84ae2f948",
       [
        null,
        {}
@@ -393361,21 +393361,21 @@
      "aspect-ratio": {
       "parsing": {
        "contain-intrinsic-size-computed.html": [
-        "3cd562fb9ce10a0f5c82b4884046c91e2b9428b0",
+        "bf56adb9fe136d5e73c4dd5caec2cb4040b75115",
         [
          null,
          {}
         ]
        ],
        "contain-intrinsic-size-invalid.html": [
-        "523ba7269c76777cd314edeb195b5465bbccef4d",
+        "20378ab8cfe4f346d841a9a59e579a90b8147515",
         [
          null,
          {}
         ]
        ],
        "contain-intrinsic-size-valid.html": [
-        "d9341d8c15b0a4f7fac268d24b08109484cafe20",
+        "96b3ca59acc8af8c292fdaf2cc255475e7929d1f",
         [
          null,
          {}
@@ -404098,7 +404098,7 @@
       ]
      ],
      "test_media_queries.html": [
-      "881df835f5a95e45487193881d5da89c81602ba9",
+      "b063d2b6834d8fb7137137c47895b1b17c393b97",
       [
        null,
        {}
@@ -405699,6 +405699,22 @@
     ]
    },
    "delegated-ink": {
+    "exception-thrown-bad-color.tentative.html": [
+     "24e54c50bae567c3f1690378d1d62e8b68290e5e",
+     [
+      null,
+      {
+       "testdriver": true
+      }
+     ]
+    ],
+    "exception-thrown-untrusted-event.tentative.window.js": [
+     "de4a2b43571f62d27cc67e9dccc66cd63c192b83",
+     [
+      "delegated-ink/exception-thrown-untrusted-event.tentative.window.html",
+      {}
+     ]
+    ],
     "requestPresenter-returns-valid-promise.tentative.window.js": [
      "0a54115ee11ab701edd600770900c2265a294e11",
      [
@@ -427144,6 +427160,13 @@
       null,
       {}
      ]
+    ],
+    "forced-colors-mode-27.html": [
+     "5a42f947adcac841cc00be7a233ea2fbd94828c8",
+     [
+      null,
+      {}
+     ]
     ]
    },
    "fullscreen": {
@@ -474876,7 +474899,7 @@
      ]
     ],
     "payment-request-constructor.https.sub.html": [
-     "e9e5121f67cb26030b9e0310c44858ebaadaf603",
+     "9b0ad06454f9330ba4115bff2990647b47adbd2d",
      [
       null,
       {}
@@ -488940,21 +488963,21 @@
      ]
     ],
     "element-based-offset-clamp.html": [
-     "514eba09c78468f351cae4b38543389f7f33feb0",
+     "b140507493848688f38021573643ce7d6321e514",
      [
       null,
       {}
      ]
     ],
     "element-based-offset.html": [
-     "064ab4c5f3ae43c4ea4476997a85c3836a1419ee",
+     "4b8661ae41b4e3d9c00660ac70f5c10da0aa116e",
      [
       null,
       {}
      ]
     ],
     "finish-animation.html": [
-     "87bcc41a6a222d883ebe2b249ae103b05275019d",
+     "6729d2fe7f342481de8b27965b67d5b5538ba198",
      [
       null,
       {}
@@ -488979,21 +489002,21 @@
      ]
     ],
     "scroll-animation-inactive-timeline.html": [
-     "1c0befa6943bca12c1e200d429f61473bfd2764b",
+     "2d36648925c3690c644945fd59d281f25531c764",
      [
       null,
       {}
      ]
     ],
     "scroll-animation.html": [
-     "cb270d52f7c406523cc7705433267bdf33ede5cc",
+     "60fc4c500cd3e06bf67f511687dd9c7161fa6a0f",
      [
       null,
       {}
      ]
     ],
     "scroll-timeline-invalidation.html": [
-     "7ab59a140be40ef53c26ec5f9aee46721d6292c8",
+     "45c148e4aa9f8a8a3c72594bcf0069e19938ae2b",
      [
       null,
       {}
@@ -489016,21 +489039,21 @@
      ]
     ],
     "setting-current-time.html": [
-     "d46206d8257702d443e3b1e620bf9bad4f327ee3",
+     "91b558b1ceac840e43e0d3af8031a8d30e129ece",
      [
       null,
       {}
      ]
     ],
     "setting-playback-rate.html": [
-     "0575464337fdc909fefcdd4af4d68b230d448ac4",
+     "e71d933be1a8e494f4cd556184e974c8635b5d28",
      [
       null,
       {}
      ]
     ],
     "setting-start-time.html": [
-     "643f62a9b58b186de441bdb6c3dd5cc70d35fb73",
+     "9346214b0577c432228bc00d4b8608d56421d04d",
      [
       null,
       {}
@@ -519968,7 +519991,7 @@
      ]
     ],
     "webGLCanvasContext_create_xrcompatible.https.html": [
-     "b83b9601aed1930b5687154b9f5a1b6877bb988a",
+     "8ba225bcf7c91a3de17699300310baf9ad75a18f",
      [
       null,
       {}
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
new file mode 100644
index 00000000000..f64b45fea6b
--- /dev/null
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-002.html]
+  [Hit test float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
new file mode 100644
index 00000000000..4bfb0c2053a
--- /dev/null
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-004.html]
+  [Miss float below something else]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/mediaqueries/aspect-ratio-004.html.ini b/tests/wpt/metadata/css/mediaqueries/aspect-ratio-004.html.ini
new file mode 100644
index 00000000000..f0aa608d5d2
--- /dev/null
+++ b/tests/wpt/metadata/css/mediaqueries/aspect-ratio-004.html.ini
@@ -0,0 +1,2 @@
+[aspect-ratio-004.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/mediaqueries/device-aspect-ratio-002.html.ini b/tests/wpt/metadata/css/mediaqueries/device-aspect-ratio-002.html.ini
new file mode 100644
index 00000000000..dba52cd9842
--- /dev/null
+++ b/tests/wpt/metadata/css/mediaqueries/device-aspect-ratio-002.html.ini
@@ -0,0 +1,2 @@
+[device-aspect-ratio-002.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/fetch/content-type/response.window.js.ini b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
index 196b87868f4..36ea5a82f1f 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -312,21 +312,21 @@
   [fetch(): separate response Content-Type: text/plain ]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/html */*]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
+  [<iframe>: combined response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/content-type/script.window.js.ini b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
index d2df9b78483..c7413d589dc 100644
--- a/tests/wpt/metadata/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
@@ -56,3 +56,9 @@
   [separate text/javascript x/x]
     expected: FAIL
 
+  [separate text/javascript;charset=windows-1252 error text/javascript]
+    expected: FAIL
+
+  [separate text/javascript;charset=windows-1252  text/javascript]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index 3f0c77d1871..30e1b851fd4 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,9 +11,3 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
-  [X-Content-Type-Options%3A%20%22nosniFF%22]
-    expected: FAIL
-
-  [X-Content-Type-Options%3A%20%2Cnosniff]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
deleted file mode 100644
index 385376c7321..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_4.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
deleted file mode 100644
index dc2e45516de..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_5.html]
-  [Multiple history traversals, last would be aborted]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index f6a7aca3306..5f60c78e73c 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
@@ -1,5 +1,6 @@
 [iframe_sandbox_popups_escaping-3.html]
   type: testharness
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index 9df1ac56f2a..963d4cd20ef 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_nonescaping-1.html]
   type: testharness
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index e440b1e38c6..dc856a3d5a3 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,6 +1,5 @@
 [iframe_sandbox_popups_nonescaping-3.html]
   type: testharness
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini b/tests/wpt/metadata/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
index 1d9f9c2e910..806a12f305d 100644
--- a/tests/wpt/metadata/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
+++ b/tests/wpt/metadata/html/semantics/links/links-created-by-a-and-area-elements/htmlanchorelement_noopener.html.ini
@@ -1,17 +1,12 @@
 [htmlanchorelement_noopener.html]
   type: testharness
+  expected: TIMEOUT
   [Check that targeting of rel=noopener with a given name ignores an existing window with that name]
     expected: NOTRUN
 
   [Check that rel=noopener with target=_parent does a normal load]
-    expected: FAIL
-
-  [Check that rel=noopener with target=_top does a normal load]
-    expected: FAIL
+    expected: NOTRUN
 
   [Check that targeting of rel=noopener with a given name reuses an existing window with that name]
     expected: FAIL
 
-  [Check that rel=noopener with target=_self does a normal load]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
index a1effd5f801..5ddb9bfeff6 100644
--- a/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
+++ b/tests/wpt/metadata/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-job-queue/promise-job-entry.html.ini
@@ -1,9 +1,10 @@
 [promise-job-entry.html]
+  expected: TIMEOUT
   [Fulfillment handler on fulfilled promise]
     expected: FAIL
 
   [Rejection handler on pending-then-rejected promise]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Sanity check: this all works as expected with no promises involved]
     expected: FAIL
@@ -15,5 +16,5 @@
     expected: FAIL
 
   [Fulfillment handler on pending-then-fulfilled promise]
-    expected: FAIL
+    expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/webmessaging/with-ports/018.html.ini b/tests/wpt/metadata/webmessaging/with-ports/018.html.ini
new file mode 100644
index 00000000000..663a1f8fa30
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/with-ports/018.html.ini
@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/web-platform-tests/css/css-scoping/slotted-parsing.html b/tests/wpt/web-platform-tests/css/css-scoping/slotted-parsing.html
index 2c55a0ded09..f0062c86744 100644
--- a/tests/wpt/web-platform-tests/css/css-scoping/slotted-parsing.html
+++ b/tests/wpt/web-platform-tests/css/css-scoping/slotted-parsing.html
@@ -14,7 +14,13 @@
   test_invalid_selector("::slotted(*).class");
   test_invalid_selector("::slotted(*)#id {}");
   test_invalid_selector("::slotted(*)[attr]");
+  test_invalid_selector("::slotted(*):host");
+  test_invalid_selector("::slotted(*):host(div)");
   test_invalid_selector("::slotted(*):hover");
+  test_invalid_selector("::slotted(*):is(:hover)");
+  test_invalid_selector("::slotted(*):where(:hover)");
+  test_invalid_selector("::slotted(*):is(#id)");
+  test_invalid_selector("::slotted(*):where(#id)");
   test_invalid_selector("::slotted(*):read-only");
   test_invalid_selector("::slotted(*)::slotted(*)");
   test_invalid_selector("::slotted(*)::before::slotted(*)");
diff --git a/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-computed.html b/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-computed.html
index 3cd562fb9ce..bf56adb9fe1 100644
--- a/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-computed.html
+++ b/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-computed.html
@@ -12,7 +12,17 @@
 <script>
 
 test_computed_value("aspect-ratio", "auto");
-test_computed_value("aspect-ratio", "1 / 1");
+test_computed_value("aspect-ratio", "1");
+test_computed_value("aspect-ratio", "1.3");
+test_computed_value("aspect-ratio", "1 / 1", "1");
 test_computed_value("aspect-ratio", "16 / 9");
+test_computed_value("aspect-ratio", "16.3 / 9.5");
 test_computed_value("aspect-ratio", "16/9", "16 / 9");
+test_computed_value("aspect-ratio", "0 / 9");
+test_computed_value("aspect-ratio", "16 / 0");
+// The computed value of a <ratio> is the pair of numbers provided, unless
+// both numbers are zero, in which case the computed value is the pair (1, 0)
+// (same as 1 / 0).
+// https://github.com/w3c/csswg-drafts/issues/5084
+test_computed_value("aspect-ratio", "0 / 0", "1 / 0");
 </script>
diff --git a/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-invalid.html b/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-invalid.html
index 523ba7269c7..20378ab8cfe 100644
--- a/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-invalid.html
+++ b/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-invalid.html
@@ -12,8 +12,7 @@ test_invalid_value("aspect-ratio", "auto / 5");
 test_invalid_value("aspect-ratio", "auto / 16");
 test_invalid_value("aspect-ratio", "16 9");
 test_invalid_value("aspect-ratio", "16px / 9px");
-test_invalid_value("aspect-ratio", "0 / 9");
-test_invalid_value("aspect-ratio", "16 / 0");
-test_invalid_value("aspect-ratio", "0 / 0");
 test_invalid_value("aspect-ratio", "16 / -9");
+test_invalid_value("aspect-ratio", "1 auto");
+test_invalid_value("aspect-ratio", "1.5 auto");
 </script>
diff --git a/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-valid.html b/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-valid.html
index d9341d8c15b..96b3ca59acc 100644
--- a/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-valid.html
+++ b/tests/wpt/web-platform-tests/css/css-sizing/aspect-ratio/parsing/contain-intrinsic-size-valid.html
@@ -9,8 +9,16 @@
 
 <script>
 test_valid_value("aspect-ratio", "auto");
+test_valid_value("aspect-ratio", "16");
+test_valid_value("aspect-ratio", "1/1", "1");
+test_valid_value("aspect-ratio", "16.3");
 test_valid_value("aspect-ratio", "16 / 9");
+test_valid_value("aspect-ratio", "16.3 / 9.4");
 test_valid_value("aspect-ratio", "16/9", "16 / 9");
 test_valid_value("aspect-ratio", "16 /9", "16 / 9");
 test_valid_value("aspect-ratio", "16/ 9", "16 / 9");
+test_valid_value("aspect-ratio", "0 / 9");
+test_valid_value("aspect-ratio", "16 / 0");
+// https://github.com/w3c/csswg-drafts/issues/5084
+test_valid_value("aspect-ratio", "0 / 0", "1 / 0");
 </script>
diff --git a/tests/wpt/web-platform-tests/css/mediaqueries/aspect-ratio-002.html b/tests/wpt/web-platform-tests/css/mediaqueries/aspect-ratio-002.html
index b4a25eebb27..78eee374bf7 100644
--- a/tests/wpt/web-platform-tests/css/mediaqueries/aspect-ratio-002.html
+++ b/tests/wpt/web-platform-tests/css/mediaqueries/aspect-ratio-002.html
@@ -6,7 +6,7 @@
 <link rel="help" title="4.6. aspect-ratio" href="http://www.w3.org/TR/css3-mediaqueries/#aspect-ratio">
 <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
 <meta name="flags" content="">
-<meta name="assert" content="The 'aspect-ratio' property with prefix 'min' set '0/0' is invalid that means the style sheet specified by 'min-aspect-ratio' will not be applied.">
+<meta name="assert" content="The 'aspect-ratio' property with prefix 'min' set '0/0' (which is converted into '1/0') is infinite that means the style sheet specified by 'min-aspect-ratio' will not be applied.">
 <style>
   div {
     background-color: green;
diff --git a/tests/wpt/web-platform-tests/css/mediaqueries/aspect-ratio-004.html b/tests/wpt/web-platform-tests/css/mediaqueries/aspect-ratio-004.html
index b4b2e860d87..cc7afda3946 100644
--- a/tests/wpt/web-platform-tests/css/mediaqueries/aspect-ratio-004.html
+++ b/tests/wpt/web-platform-tests/css/mediaqueries/aspect-ratio-004.html
@@ -6,16 +6,16 @@
 <link rel="help" title="4.6. aspect-ratio" href="http://www.w3.org/TR/css3-mediaqueries/#aspect-ratio">
 <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
 <meta name="flags" content="">
-<meta name="assert" content="The 'aspect-ratio' property with prefix 'max' set '0/0' is invalid that means the style sheet specified by 'max-aspect-ratio' will not be applied.">
+<meta name="assert" content="The 'aspect-ratio' property with prefix 'max' set '0/0' (which is converted into '1/0') is infinite that means the style sheet specified by 'max-aspect-ratio' will be applied.">
 <style>
   div {
-    background-color: green;
+    background-color: red;
     height: 100px;
     width: 100px;
   }
   @media screen and (max-aspect-ratio: 0/0) {
     div {
-      background-color: red;
+      background-color: green;
     }
   }
 </style>
diff --git a/tests/wpt/web-platform-tests/css/mediaqueries/device-aspect-ratio-002.html b/tests/wpt/web-platform-tests/css/mediaqueries/device-aspect-ratio-002.html
index 52c985aafa0..5acc4c30b6f 100644
--- a/tests/wpt/web-platform-tests/css/mediaqueries/device-aspect-ratio-002.html
+++ b/tests/wpt/web-platform-tests/css/mediaqueries/device-aspect-ratio-002.html
@@ -6,16 +6,16 @@
 <link rel="help" title="4.7. device-aspect-ratio" href="http://www.w3.org/TR/css3-mediaqueries/#device-aspect-ratio">
 <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
 <meta name="flags" content="">
-<meta name="assert" content="The 'device-aspect-ratio' property with prefix 'max' set '0/0' is invalid that means the style sheet specified by 'max-device-aspect-ratio' will not be applied.">
+<meta name="assert" content="The 'device-aspect-ratio' property with prefix 'max' set '0/0' (which is converted into '1/0') is infinite that means the style sheet specified by 'max-device-aspect-ratio' will be applied.">
 <style>
   div {
-    background-color: green;
+    background-color: red;
     height: 100px;
     width: 100px;
   }
   @media screen and (max-device-aspect-ratio: 0/0) {
     div {
-      background-color: red;
+      background-color: green;
     }
   }
 </style>
diff --git a/tests/wpt/web-platform-tests/css/mediaqueries/device-aspect-ratio-004.html b/tests/wpt/web-platform-tests/css/mediaqueries/device-aspect-ratio-004.html
index cd949145229..adca53cf097 100644
--- a/tests/wpt/web-platform-tests/css/mediaqueries/device-aspect-ratio-004.html
+++ b/tests/wpt/web-platform-tests/css/mediaqueries/device-aspect-ratio-004.html
@@ -6,7 +6,7 @@
 <link rel="help" title="4.7. device-aspect-ratio" href="http://www.w3.org/TR/css3-mediaqueries/#device-aspect-ratio">
 <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
 <meta name="flags" content="">
-<meta name="assert" content="The 'device-aspect-ratio' property with prefix 'min' set '0/0' is invalid that means the style sheet specified by 'min-device-aspect-ratio' will not be applied.">
+<meta name="assert" content="The 'device-aspect-ratio' property with prefix 'min' set '0/0' (which is converted into '1/0') is infinite that means the style sheet specified by 'min-device-aspect-ratio' will not be applied.">
 <style>
   div {
     background-color: green;
diff --git a/tests/wpt/web-platform-tests/css/mediaqueries/test_media_queries.html b/tests/wpt/web-platform-tests/css/mediaqueries/test_media_queries.html
index 881df835f5a..b063d2b6834 100644
--- a/tests/wpt/web-platform-tests/css/mediaqueries/test_media_queries.html
+++ b/tests/wpt/web-platform-tests/css/mediaqueries/test_media_queries.html
@@ -307,14 +307,14 @@ function run() {
       expression_should_be_parseable(feature + ": 1  /1");
       expression_should_be_parseable(feature + ": 1  / \t\n1");
       expression_should_be_parseable(feature + ": 1/\r1");
-      expression_should_not_be_parseable(feature + ": 1");
-      expression_should_not_be_parseable(feature + ": 0.5");
-      expression_should_not_be_parseable(feature + ": 1.0/1");
-      expression_should_not_be_parseable(feature + ": 1/1.0");
-      expression_should_not_be_parseable(feature + ": 1.0/1.0");
-      expression_should_not_be_parseable(feature + ": 0/1");
-      expression_should_not_be_parseable(feature + ": 1/0");
-      expression_should_not_be_parseable(feature + ": 0/0");
+      expression_should_be_parseable(feature + ": 1");
+      expression_should_be_parseable(feature + ": 0.5");
+      expression_should_be_parseable(feature + ": 1.0/1");
+      expression_should_be_parseable(feature + ": 1/1.0");
+      expression_should_be_parseable(feature + ": 1.0/1.0");
+      expression_should_be_parseable(feature + ": 0/1");
+      expression_should_be_parseable(feature + ": 1/0");
+      expression_should_be_parseable(feature + ": 0/0");
       expression_should_not_be_parseable(feature + ": -1/1");
       expression_should_not_be_parseable(feature + ": 1/-1");
       expression_should_not_be_parseable(feature + ": -1/-1");
diff --git a/tests/wpt/web-platform-tests/css/requirements.txt b/tests/wpt/web-platform-tests/css/requirements.txt
index 634dfe62092..b54096f2d66 100644
--- a/tests/wpt/web-platform-tests/css/requirements.txt
+++ b/tests/wpt/web-platform-tests/css/requirements.txt
@@ -2,5 +2,5 @@ Template-Python==0.1.post1
 html5lib==1.0.1
 lxml==4.1.1
 mercurial==4.5
-six==1.14.0
+six==1.15.0
 webencodings==0.5.1
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/reftest.list b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/reftest.list
index 1c5b5447c70..0bde2a8c8e3 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/reftest.list
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/contain/reftest.list
@@ -1,4 +1,3 @@
-
 == contain-paint-clip-001.html contain-paint-clip-001-ref.html
 == contain-paint-clip-002.html contain-paint-clip-002-ref.html
 == contain-paint-clip-003.html contain-paint-clip-003-ref.html
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004-ref.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004-ref.html
index c23c7b176d7..0b40fb2d626 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004-ref.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004-ref.html
@@ -8,12 +8,10 @@
   <title>Reference: Testing percentage gap resolution in flex containers</title>
   <link rel="author" title="Mihir Iyer" href="mailto:miyer@mozilla.com">
   <meta charset="utf-8">
-</html>
   <style>
     .flexContainer {
       display: flex;
       border: 2px solid black;
-      row-gap: 20px;
       column-gap: 10px;
       align-content: start;
       justify-content: start;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004.html b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004.html
index d94571d8d71..0d86b3818ff 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004.html
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/flexbox-column-row-gap-004.html
@@ -9,7 +9,9 @@
   <link rel="author" title="Mihir Iyer" href="mailto:miyer@mozilla.com">
   <link rel="help" href="https://drafts.csswg.org/css-align/#column-row-gap">
   <link rel="match" href="flexbox-column-row-gap-004-ref.html">
+  <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/5081">
   <meta charset="utf-8">
+  <meta name="assert" content="% row-gaps in a flexbox with indefinite block size are treated as 'normal'." />
   <style>
     .flexContainer {
       display: flex;
diff --git a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/reftest.list b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/reftest.list
index 2493ab155b0..8e2c2458402 100644
--- a/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/reftest.list
+++ b/tests/wpt/web-platform-tests/css/vendor-imports/mozilla/mozilla-central-reftests/flexbox/reftest.list
@@ -190,7 +190,7 @@
 == flexbox-mbp-horiz-002b.xhtml            flexbox-mbp-horiz-002-ref.xhtml
 == flexbox-mbp-horiz-002v.xhtml            flexbox-mbp-horiz-002-ref.xhtml
 == flexbox-mbp-horiz-003.xhtml             flexbox-mbp-horiz-003-ref.xhtml
-== flexbox-mbp-horiz-003v.xhtml            flexbox-mbp-horiz-003-ref.xhtml
+== flexbox-mbp-horiz-003v.xhtml flexbox-mbp-horiz-003-ref.xhtml
 == flexbox-mbp-horiz-003-reverse.xhtml     flexbox-mbp-horiz-003-reverse-ref.xhtml
 == flexbox-mbp-horiz-004.xhtml             flexbox-mbp-horiz-004-ref.xhtml
 
diff --git a/tests/wpt/web-platform-tests/delegated-ink/exception-thrown-bad-color.tentative.html b/tests/wpt/web-platform-tests/delegated-ink/exception-thrown-bad-color.tentative.html
new file mode 100644
index 00000000000..24e54c50bae
--- /dev/null
+++ b/tests/wpt/web-platform-tests/delegated-ink/exception-thrown-bad-color.tentative.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<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>
+
+<canvas id="canvas"></canvas>
+<script>
+  promise_test(async (t) => {
+    const presenter = await navigator.ink.requestPresenter('delegated-ink-trail', canvas);
+    const style = { color: "bad-color", diameter: 6 };
+
+    canvas.addEventListener("pointermove", evt => {
+      assert_throws_js(TypeError, function() {
+        presenter.updateInkTrailStartPoint(evt, style);
+      }, "Expected a TypeError to be thrown due to bad color.");
+    });
+
+    const actions_promise = new test_driver.Actions().pointerMove(10,10).send();
+    t.add_cleanup(() => actions_promise);
+  });
+</script>
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/delegated-ink/exception-thrown-untrusted-event.tentative.window.js b/tests/wpt/web-platform-tests/delegated-ink/exception-thrown-untrusted-event.tentative.window.js
new file mode 100644
index 00000000000..de4a2b43571
--- /dev/null
+++ b/tests/wpt/web-platform-tests/delegated-ink/exception-thrown-untrusted-event.tentative.window.js
@@ -0,0 +1,10 @@
+let presenter = navigator.ink.requestPresenter('delegated-ink-trail');
+let style = { color: "red", diameter: 3 };
+let evt = new PointerEvent("pointerdown", {clientX: 10, clientY: 10});
+presenter.then( function(p) {
+  test(() => {
+    assert_throws_dom("NotAllowedError", function() {
+      p.updateInkTrailStartPoint(evt, style);
+    }, "NotAllowedError is expected due to untrusted event.");
+  }, "Expected a NotAllowedError to be thrown due to untrusted event.");
+})
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/forced-colors-mode/forced-colors-mode-27.html b/tests/wpt/web-platform-tests/forced-colors-mode/forced-colors-mode-27.html
new file mode 100644
index 00000000000..5a42f947adc
--- /dev/null
+++ b/tests/wpt/web-platform-tests/forced-colors-mode/forced-colors-mode-27.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Forced colors mode - html/head elements.
+  Tests that the color properties are overridden for html/head elements and not
+  just for the body.
+</title>
+<link rel="help" href="https://www.w3.org/TR/css-color-adjust-1/#forced-colors-properties">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+  html {
+    color: red;
+  }
+  head {
+    color: blue;
+  }
+  div {
+    color: CanvasText;
+    forced-color-adjust: none;
+  }
+</style>
+<div>
+  The color properties for the head and html elements should get updated in
+  Forced Colors Mode.
+</div>
+<script>
+  var div_color = getComputedStyle(document.querySelector('div')).color;
+  var html_color = getComputedStyle(document.querySelector('html')).color;
+  var head_color = getComputedStyle(document.querySelector('head')).color;
+
+  test(function(){
+    assert_equals(html_color, div_color);
+    assert_equals(head_color, div_color);
+  }, "Checks that html/head color is overridden to CanvasText.");
+</script>
diff --git a/tests/wpt/web-platform-tests/interfaces/web-animations.idl b/tests/wpt/web-platform-tests/interfaces/web-animations.idl
index 64265c3bf3f..ae64bb867eb 100644
--- a/tests/wpt/web-platform-tests/interfaces/web-animations.idl
+++ b/tests/wpt/web-platform-tests/interfaces/web-animations.idl
@@ -6,6 +6,7 @@
 [Exposed=Window]
 interface AnimationTimeline {
     readonly attribute double? currentTime;
+    readonly attribute TimelinePhase phase;
 };
 
 dictionary DocumentTimelineOptions {
@@ -49,6 +50,8 @@ enum AnimationPlayState { "idle", "running", "paused", "finished" };
 
 enum AnimationReplaceState { "active", "removed", "persisted" };
 
+enum TimelinePhase { "inactive", "before", "active", "after" };
+
 [Exposed=Window]
 interface AnimationEffect {
     EffectTiming         getTiming();
diff --git a/tests/wpt/web-platform-tests/payment-request/payment-request-constructor.https.sub.html b/tests/wpt/web-platform-tests/payment-request/payment-request-constructor.https.sub.html
index e9e5121f67c..9b0ad06454f 100644
--- a/tests/wpt/web-platform-tests/payment-request/payment-request-constructor.https.sub.html
+++ b/tests/wpt/web-platform-tests/payment-request/payment-request-constructor.https.sub.html
@@ -111,6 +111,19 @@ test(() => {
   assert_throws_js(TypeError, () => new PaymentRequest([], defaultDetails));
 }, "If the length of the methodData sequence is zero, then throw a TypeError");
 
+test(() => {
+  smokeTest();
+  const duplicateMethods = [
+    {
+      supportedMethods: "https://{{domains[nonexistent]}}/payment-request",
+    },
+    {
+      supportedMethods: "https://{{domains[nonexistent]}}/payment-request",
+    },
+  ];
+  assert_throws_js(RangeError, () => new PaymentRequest(duplicateMethods, defaultDetails));
+}, "If payment method is duplicate, then throw a RangeError");
+
 test(() => {
   smokeTest();
   const JSONSerializables = [[], { object: {} }];
diff --git a/tests/wpt/web-platform-tests/scroll-animations/element-based-offset-clamp.html b/tests/wpt/web-platform-tests/scroll-animations/element-based-offset-clamp.html
index 514eba09c78..b1405074938 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/element-based-offset-clamp.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/element-based-offset-clamp.html
@@ -11,6 +11,7 @@
   overflow: scroll;
   height: 500px;
   width: 500px;
+  will-change: transform;
 }
 
 /* Disable scrollbars to simplify the calculations in the test. */
diff --git a/tests/wpt/web-platform-tests/scroll-animations/element-based-offset.html b/tests/wpt/web-platform-tests/scroll-animations/element-based-offset.html
index 064ab4c5f3a..4b8661ae41b 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/element-based-offset.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/element-based-offset.html
@@ -11,6 +11,7 @@
     overflow: auto;
     height: 500px;
     width: 500px;
+    will-change: transform;
   }
 
   .contents {
diff --git a/tests/wpt/web-platform-tests/scroll-animations/finish-animation.html b/tests/wpt/web-platform-tests/scroll-animations/finish-animation.html
index 87bcc41a6a2..6729d2fe7f3 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/finish-animation.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/finish-animation.html
@@ -12,6 +12,7 @@
   overflow: auto;
   height: 200px;
   width: 100px;
+  will-change: transform;
 }
 
 .contents {
diff --git a/tests/wpt/web-platform-tests/scroll-animations/scroll-animation-inactive-timeline.html b/tests/wpt/web-platform-tests/scroll-animations/scroll-animation-inactive-timeline.html
index 1c0befa6943..2d36648925c 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/scroll-animation-inactive-timeline.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/scroll-animation-inactive-timeline.html
@@ -10,6 +10,7 @@
     overflow: auto;
     height: 100px;
     width: 100px;
+    will-change: transform;
   }
   .contents {
     height: 1000px;
diff --git a/tests/wpt/web-platform-tests/scroll-animations/scroll-animation.html b/tests/wpt/web-platform-tests/scroll-animations/scroll-animation.html
index cb270d52f7c..60fc4c500cd 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/scroll-animation.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/scroll-animation.html
@@ -10,6 +10,7 @@
     overflow: auto;
     height: 100px;
     width: 100px;
+    will-change: transform;
   }
   .contents {
     height: 1000px;
diff --git a/tests/wpt/web-platform-tests/scroll-animations/scroll-timeline-invalidation.html b/tests/wpt/web-platform-tests/scroll-animations/scroll-timeline-invalidation.html
index 7ab59a140be..45c148e4aa9 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/scroll-timeline-invalidation.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/scroll-timeline-invalidation.html
@@ -11,6 +11,7 @@
     overflow: auto;
     height: 100px;
     width: 100px;
+    will-change: transform;
   }
   .contents {
     height: 1000px;
diff --git a/tests/wpt/web-platform-tests/scroll-animations/setting-current-time.html b/tests/wpt/web-platform-tests/scroll-animations/setting-current-time.html
index d46206d8257..91b558b1cea 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/setting-current-time.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/setting-current-time.html
@@ -11,6 +11,7 @@
   overflow: auto;
   height: 200px;
   width: 100px;
+  will-change: transform;
 }
 .contents {
   height: 1000px;
diff --git a/tests/wpt/web-platform-tests/scroll-animations/setting-playback-rate.html b/tests/wpt/web-platform-tests/scroll-animations/setting-playback-rate.html
index 0575464337f..e71d933be1a 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/setting-playback-rate.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/setting-playback-rate.html
@@ -11,6 +11,7 @@
   overflow: auto;
   height: 100px;
   width: 100px;
+  will-change: transform;
 }
 .contents {
   height: 1000px;
diff --git a/tests/wpt/web-platform-tests/scroll-animations/setting-start-time.html b/tests/wpt/web-platform-tests/scroll-animations/setting-start-time.html
index 643f62a9b58..9346214b057 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/setting-start-time.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/setting-start-time.html
@@ -11,6 +11,7 @@
   overflow: auto;
   height: 200px;
   width: 100px;
+  will-change: transform;
 }
 .contents {
   height: 1000px;
diff --git a/tests/wpt/web-platform-tests/tools/ci/tc/tests/test_valid.py b/tests/wpt/web-platform-tests/tools/ci/tc/tests/test_valid.py
index c0863dfb2f5..47cbc2e87bb 100644
--- a/tests/wpt/web-platform-tests/tools/ci/tc/tests/test_valid.py
+++ b/tests/wpt/web-platform-tests/tools/ci/tc/tests/test_valid.py
@@ -46,7 +46,11 @@ def test_verify_payload():
     r.raise_for_status()
     create_task_schema = r.json()
 
-    r = requests.get("https://raw.githubusercontent.com/taskcluster/taskcluster/master/workers/docker-worker/schemas/v1/payload.json")
+    # TODO(Hexcles): Change it to https://community-tc.services.mozilla.com/references/schemas/docker-worker/v1/payload.json
+    # after the next Community-TC release (see https://bugzilla.mozilla.org/show_bug.cgi?id=1639732)..
+    r = requests.get(
+        "https://raw.githubusercontent.com/taskcluster/taskcluster/"
+        "3ed511ef9119da54fc093e976b7b5955874c9b54/workers/docker-worker/schemas/v1/payload.json")
     r.raise_for_status()
     payload_schema = r.json()
 
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/requirements.txt b/tests/wpt/web-platform-tests/tools/wptrunner/requirements.txt
index 9b84e7334bb..5310721bbb9 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/requirements.txt
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/requirements.txt
@@ -6,4 +6,4 @@ mozdebug==0.2
 pillow==6.2.2  # pyup: <7.0
 urllib3[secure]==1.25.9
 requests==2.23.0
-six==1.14.0
+six==1.15.0
diff --git a/tests/wpt/web-platform-tests/webxr/webGLCanvasContext_create_xrcompatible.https.html b/tests/wpt/web-platform-tests/webxr/webGLCanvasContext_create_xrcompatible.https.html
index b83b9601aed..8ba225bcf7c 100644
--- a/tests/wpt/web-platform-tests/webxr/webGLCanvasContext_create_xrcompatible.https.html
+++ b/tests/wpt/web-platform-tests/webxr/webGLCanvasContext_create_xrcompatible.https.html
@@ -16,7 +16,7 @@
 
             // Check that an offscreen context behaves no different.
             let offscreenCanvas = document.createElement('canvas');
-            let offscreenGl = webglCanvas.getContext(
+            let offscreenGl = offscreenCanvas.getContext(
               'webgl', {xrCompatible: true});
             assert_true(offscreenGl.getContextAttributes().xrCompatible);
           });