diff --git a/tests/wpt/metadata-layout-2020/FileAPI/url/url-charset.window.js.ini b/tests/wpt/metadata-layout-2020/FileAPI/url/url-charset.window.js.ini
new file mode 100644
index 00000000000..a9005e45d6e
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/FileAPI/url/url-charset.window.js.ini
@@ -0,0 +1,8 @@
+[url-charset.window.html]
+  expected: TIMEOUT
+  [Blob charset should override any auto-detected charset.]
+    expected: TIMEOUT
+
+  [Blob charset should override <meta charset>.]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-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/css-transforms/transform-scale-hittest.html.ini b/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
index f8e7e539aae..4a1e8110f6f 100644
--- a/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/css-transforms/transform-scale-hittest.html.ini
@@ -2,6 +2,3 @@
   [Hit test intersecting scaled box]
     expected: FAIL
 
-  [Hit test within unscaled box]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/css/cssom-view/elementFromPoint-001.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/elementFromPoint-001.html.ini
deleted file mode 100644
index e38782d8c85..00000000000
--- a/tests/wpt/metadata-layout-2020/css/cssom-view/elementFromPoint-001.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[elementFromPoint-001.html]
-  [CSSOM View - 5 - extensions to the Document interface]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/css/cssom-view/matchMedia-display-none-iframe.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/matchMedia-display-none-iframe.html.ini
deleted file mode 100644
index e6e1f29e274..00000000000
--- a/tests/wpt/metadata-layout-2020/css/cssom-view/matchMedia-display-none-iframe.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[matchMedia-display-none-iframe.html]
-  expected: ERROR
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 25d4f2b1265..9bf73d83817 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
@@ -309,15 +309,21 @@
   [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/plain */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
+  [<iframe>: combined response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
+  [<iframe>: separate response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;x=" 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..5c001592859 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 +56,6 @@
   [separate text/javascript x/x]
     expected: FAIL
 
+  [separate text/javascript;charset=windows-1252 error 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 30e1b851fd4..a698534cfa0 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
@@ -11,3 +11,9 @@
   [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'NosniFF']
+    expected: FAIL
+
+  [X-Content-Type-Options%3A%20%40%23%24%23%25%25%26%5E%26%5E*()()11!%2Cnosniff]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-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_4.html.ini
similarity index 71%
rename from tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
rename to tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
index dc2e45516de..385376c7321 100644
--- a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_5.html]
+[traverse_the_history_4.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/windows/embedded-opener-remove-frame.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/windows/embedded-opener-remove-frame.html.ini
index 8e2a63e3b7f..9a85a905394 100644
--- a/tests/wpt/metadata-layout-2020/html/browsers/windows/embedded-opener-remove-frame.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/browsers/windows/embedded-opener-remove-frame.html.ini
@@ -1,5 +1,4 @@
 [embedded-opener-remove-frame.html]
-  expected: CRASH
   [opener of discarded nested browsing context]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/interaction/focus/focus-management/focus-events.html.ini b/tests/wpt/metadata-layout-2020/html/interaction/focus/focus-management/focus-events.html.ini
new file mode 100644
index 00000000000..3d143c88e67
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/interaction/focus/focus-management/focus-events.html.ini
@@ -0,0 +1,4 @@
+[focus-events.html]
+  [focusing on a focusable element fires a blur event at the previous focussed element]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini b/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
index f45aaafe1c5..3538891dae8 100644
--- a/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
@@ -1,4 +1,5 @@
 [supported-elements.html]
+  expected: TIMEOUT
   [Contenteditable element should support autofocus]
     expected: FAIL
 
@@ -9,7 +10,7 @@
     expected: FAIL
 
   [Area element should support autofocus]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Host element with delegatesFocus should support autofocus]
     expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index 42ebcc9d57e..88f4ddd0e9a 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-1.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_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 3080be9afc0..d913fcbb129 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_nonescaping-1.html]
-  expected: CRASH
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
index 0218bc9ba9d..c792a071c3b 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_nonescaping-2.html]
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/forms/textfieldselection/select-event.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/forms/textfieldselection/select-event.html.ini
index 85d9f9bff2a..11a105c7b93 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/forms/textfieldselection/select-event.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/forms/textfieldselection/select-event.html.ini
@@ -1,7 +1,4 @@
 [select-event.html]
-  [input type search: setSelectionRange out of range a second time (must not fire select)]
-    expected: FAIL
-
   [textarea: selectionDirection a second time (must not fire select)]
     expected: FAIL
 
@@ -14,24 +11,9 @@
   [input type text: setSelectionRange out of range a second time (must not fire select)]
     expected: FAIL
 
-  [input type password: select() a second time (must not fire select)]
-    expected: FAIL
-
   [input type url: selectionEnd out of range a second time (must not fire select)]
     expected: FAIL
 
-  [textarea: setSelectionRange() a second time (must not fire select)]
-    expected: FAIL
-
-  [input type search: selectionEnd a second time (must not fire select)]
-    expected: FAIL
-
-  [input type password: setRangeText() a second time (must not fire select)]
-    expected: FAIL
-
-  [input type tel: setSelectionRange out of range a second time (must not fire select)]
-    expected: FAIL
-
   [textarea: selectionStart out of range a second time (must not fire select)]
     expected: FAIL
 
@@ -44,30 +26,54 @@
   [input type password: selectionStart a second time (must not fire select)]
     expected: FAIL
 
-  [input type password: setSelectionRange out of range a second time (must not fire select)]
-    expected: FAIL
-
-  [textarea: selectionStart a second time (must not fire select)]
-    expected: FAIL
-
-  [input type text: selectionEnd out of range a second time (must not fire select)]
-    expected: FAIL
-
   [input type tel: setSelectionRange() a second time (must not fire select)]
     expected: FAIL
 
   [input type url: selectionDirection a second time (must not fire select)]
     expected: FAIL
 
-  [input type password: selectionEnd a second time (must not fire select)]
-    expected: FAIL
-
   [input type text: selectionStart a second time (must not fire select)]
     expected: FAIL
 
-  [input type password: selectionStart out of range a second time (must not fire select)]
+  [textarea: selectionEnd a second time (must not fire select)]
     expected: FAIL
 
-  [input type url: setSelectionRange out of range a second time (must not fire select)]
+  [input type url: setSelectionRange() a second time (must not fire select)]
+    expected: FAIL
+
+  [input type url: selectionEnd a second time (must not fire select)]
+    expected: FAIL
+
+  [input type password: selectionEnd out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type url: selectionStart out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type tel: selectionStart out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type tel: selectionDirection a second time (must not fire select)]
+    expected: FAIL
+
+  [input type url: select() a second time (must not fire select)]
+    expected: FAIL
+
+  [input type search: selectionDirection a second time (must not fire select)]
+    expected: FAIL
+
+  [textarea: setSelectionRange out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type text: selectionStart out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type text: setRangeText() a second time (must not fire select)]
+    expected: FAIL
+
+  [input type tel: select() a second time (must not fire select)]
+    expected: FAIL
+
+  [input type tel: selectionStart a second time (must not fire select)]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
index 5602ea31dbe..450c88bd32b 100644
--- a/tests/wpt/metadata-layout-2020/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
@@ -4,5 +4,5 @@
     expected: TIMEOUT
 
   [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
index a56bad443a2..66bd350083b 100644
--- a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
@@ -1,5 +1,4 @@
 [realtimeanalyser-fft-scaling.html]
-  expected: TIMEOUT
   [X 2048-point FFT peak position is not equal to 64. Got 0.]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
index 63e32fce73f..0a33e8070ff 100644
--- a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
@@ -548,3 +548,6 @@
   [X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[28696\]\t1.9545141262291947e-15\t9.3139332532882690e-1\t9.3139332532882491e-1\t9.9999999999999789e-1\t3.8985999999999999e-3\n\t[28697\]\t7.0477002859115601e-1\t9.0675884485244751e-1\t2.0198881626129150e-1\t2.2275913536212616e-1\t3.8985999999999999e-3\n\tMax AbsError of 9.3139332532882491e-1 at index of 28696.\n\tMax RelError of 9.9999999999999789e-1 at index of 28696.\n]
     expected: FAIL
 
+  [X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[28696\]\t-1.1388699060609259e-22\t9.3139332532882690e-1\t9.3139332532882690e-1\t1.0000000000000000e+0\t3.8985999999999999e-3\n\t[28697\]\t7.0477002859115601e-1\t9.0675884485244751e-1\t2.0198881626129150e-1\t2.2275913536212616e-1\t3.8985999999999999e-3\n\tMax AbsError of 9.3139332532882690e-1 at index of 28696.\n\tMax RelError of 1.0000000000000000e+0 at index of 28696.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webdriver/tests/element_click/events.py.ini b/tests/wpt/metadata-layout-2020/webdriver/tests/element_click/events.py.ini
new file mode 100644
index 00000000000..484ebb8a916
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webdriver/tests/element_click/events.py.ini
@@ -0,0 +1,4 @@
+[events.py]
+  [test_event_mousemove]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/webmessaging/with-ports/017.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/017.html.ini
deleted file mode 100644
index 064cf47545b..00000000000
--- a/tests/wpt/metadata-layout-2020/webmessaging/with-ports/017.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[017.html]
-  expected: TIMEOUT
-  [origin of the script that invoked the method, about:blank]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini
new file mode 100644
index 00000000000..663a1f8fa30
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini
@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata-layout-2020/workers/constructors/Worker/Worker-constructor.html.ini b/tests/wpt/metadata-layout-2020/workers/constructors/Worker/Worker-constructor.html.ini
deleted file mode 100644
index 80f9a4f15b8..00000000000
--- a/tests/wpt/metadata-layout-2020/workers/constructors/Worker/Worker-constructor.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[Worker-constructor.html]
-  expected: ERROR
diff --git a/tests/wpt/metadata/FileAPI/url/url-charset.window.js.ini b/tests/wpt/metadata/FileAPI/url/url-charset.window.js.ini
new file mode 100644
index 00000000000..a9005e45d6e
--- /dev/null
+++ b/tests/wpt/metadata/FileAPI/url/url-charset.window.js.ini
@@ -0,0 +1,8 @@
+[url-charset.window.html]
+  expected: TIMEOUT
+  [Blob charset should override any auto-detected charset.]
+    expected: TIMEOUT
+
+  [Blob charset should override <meta charset>.]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 59106abffe4..8d97a5bf972 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -18145,13 +18145,6 @@
       ]
      ]
     },
-    "pointerevent_element_haspointercapture_release_pending_capture-manual.html": [
-     "17ad3e24ba4cc2bae4a58d84225c2a841fa4e867",
-     [
-      null,
-      {}
-     ]
-    ],
     "pointerevent_multiple_primary_pointers_boundary_events-manual.html": [
      "029aa26368413ea96b90823285a780b6798a12d9",
      [
@@ -18180,27 +18173,6 @@
       {}
      ]
     ],
-    "pointerevent_releasepointercapture_release_right_after_capture-manual.html": [
-     "8f64b9208732da5199dc934b3c16bee0c088146e",
-     [
-      null,
-      {}
-     ]
-    ],
-    "pointerevent_setpointercapture_override_pending_capture_element-manual.html": [
-     "4e4818c21b706d9e169c7f82e8cd30cf82635dac",
-     [
-      null,
-      {}
-     ]
-    ],
-    "pointerevent_setpointercapture_to_same_element_twice-manual.html": [
-     "161c5c2fcb9bf00d77779b630fd193b0cfd9164e",
-     [
-      null,
-      {}
-     ]
-    ],
     "pointerevent_touch-action-mouse-manual.html": [
      "fcc8584515c51d60bb01092ffe1f701273c7bb58",
      [
@@ -338171,6 +338143,66 @@
      "focus-restoration-in-same-site-iframes-outer-window.html": [
       "4ccba143d3ac9e89e768e252d05abd4892b8e5cf",
       []
+     ],
+     "iframe-activeelement-after-focusing-out-different-site-iframes-outer.sub.html": [
+      "3fcebfc8ba4c69307ab7e67430d3668d2620f6fb",
+      []
+     ],
+     "iframe-activeelement-after-focusing-out-iframes-inner.html": [
+      "a94af6b9fbae67eb010037187fb6f3350a3c0b5e",
+      []
+     ],
+     "iframe-activeelement-after-focusing-out-same-site-iframes-outer.html": [
+      "98399deb7b61f41ec4f3cde4db95914b4152df21",
+      []
+     ],
+     "iframe-contentwindow-focus-with-different-site-intermediate-frame-inner.html": [
+      "c4997f5bd4fa4dc37a0316ab7045577d2edd54c6",
+      []
+     ],
+     "iframe-contentwindow-focus-with-different-site-intermediate-frame-middle.sub.html": [
+      "e3a5facf82e4c08753705ee1803b76ceef30f671",
+      []
+     ],
+     "iframe-contentwindow-focus-with-different-site-intermediate-frame-outer.sub.html": [
+      "9dbb6af9d9a4dd795cd0976bc87695e0363372b4",
+      []
+     ],
+     "iframe-contentwindow-focus-with-same-as-top-intermediate-frame-inner.html": [
+      "30be12aa811a7642578d6dcb467a49bdce01f92e",
+      []
+     ],
+     "iframe-contentwindow-focus-with-same-as-top-intermediate-frame-middle.sub.html": [
+      "747e1467466eabe5b09ec80891603e8ad1a5335c",
+      []
+     ],
+     "iframe-contentwindow-focus-with-same-as-top-intermediate-frame-outer.html": [
+      "71cfe78c0d7614f585a7dcecb3b6c12e6698d321",
+      []
+     ],
+     "iframe-focus-with-different-site-intermediate-frame-inner.html": [
+      "e2adcc06b20c6eb7720fad86148215628f65b089",
+      []
+     ],
+     "iframe-focus-with-different-site-intermediate-frame-middle.sub.html": [
+      "647f8928d6d01f387d4519eefc76f9885f80ab79",
+      []
+     ],
+     "iframe-focus-with-different-site-intermediate-frame-outer.sub.html": [
+      "5e80410206d0d2fe7cbe5faef206c9a930a5a8ed",
+      []
+     ],
+     "iframe-focus-with-same-as-top-intermediate-frame-inner.html": [
+      "c55c5b449983c74c9afb3cd2cdadf965c0e74252",
+      []
+     ],
+     "iframe-focus-with-same-as-top-intermediate-frame-middle.sub.html": [
+      "9fdbc3c3582e88d67be9f0fe6624cb5b4bfa24df",
+      []
+     ],
+     "iframe-focus-with-same-as-top-intermediate-frame-outer.html": [
+      "3f6085a739c36d046ad3e926328958f6a75d3ba7",
+      []
      ]
     }
    },
@@ -352626,7 +352658,7 @@
      []
     ],
     "custom-state-pseudo-class.idl": [
-     "d4e3da7e6a1a9e7763bde6b13c0add204ff3c7de",
+     "342f1ede0b030a85271a5db71b3773d1531aee48",
      []
     ],
     "deprecation-reporting.idl": [
@@ -353395,7 +353427,7 @@
     ]
    },
    "lint.ignore": [
-    "2e0fc8b39bc8df1a44d7b5469d81014c32fa844b",
+    "ab3d0e5157064def99f47cfbfc0e1207db477cbe",
     []
    ],
    "loading": {
@@ -372650,7 +372682,7 @@
        ]
       },
       "stash.py": [
-       "535355a828796196ee6be950c5ef9a0802236826",
+       "bf6e59927be44a503aa9ca15b8495f57704f89e7",
        []
       ],
       "utils.py": [
@@ -374415,6 +374447,10 @@
        "input.html": [
         "e2c6dadd1218e0a7d8b7d243a1c49b7f47092d77",
         []
+       ],
+       "test_click_wdspec.html": [
+        "a9451ec82bec97654896f697704218bb6068d14e",
+        []
        ]
       }
      },
@@ -374685,7 +374721,7 @@
         []
        ],
        "refine.py": [
-        "d5d24e934f61684be8512d120a4853bff7efadef",
+        "35c962b9ecbfa21c61535683c094e17884770e9f",
         []
        ],
        "test_actions_pointer_wdspec.html": [
@@ -374729,7 +374765,7 @@
         []
        ],
        "refine.py": [
-        "3a6d63e04ce941d26ab3898cb2fc2a730d46c1ce",
+        "90f722587c3be0e4066fbb6a604668a6d40f359f",
         []
        ],
        "test_actions_wdspec.html": [
@@ -374788,7 +374824,7 @@
        []
       ],
       "helpers.py": [
-       "a1082caf58cf0466185268a3c95e59b643a76bcb",
+       "13607e30481876a7777edfad57f48fcafbf8e40f",
        []
       ],
       "html": {
@@ -431057,7 +431093,7 @@
    },
    "custom-state-pseudo-class": {
     "idlharness.window.js": [
-     "dccc0f56f4683ae975e3738641d9bddc3e08b7aa",
+     "d5d40c54616745c6110078d34c591d6d07a92fb2",
      [
       "custom-state-pseudo-class/idlharness.window.html",
       {
@@ -458821,6 +458857,41 @@
       null,
       {}
      ]
+    ],
+    "iframe-activeelement-after-focusing-out-iframes.html": [
+     "832b2675e2543813bc130295ceac976ff49c9128",
+     [
+      null,
+      {}
+     ]
+    ],
+    "iframe-contentwindow-focus-with-different-site-intermediate-frame.html": [
+     "2fdc8e843a1c4de8d613689afeb31d4a451ea976",
+     [
+      null,
+      {}
+     ]
+    ],
+    "iframe-contentwindow-focus-with-same-as-top-intermediate-frame.html": [
+     "cb9239f44d893e0f27342bd7300d40f54f49c892",
+     [
+      null,
+      {}
+     ]
+    ],
+    "iframe-focus-with-different-site-intermediate-frame.html": [
+     "fd3aab70579ef04bb9df6d95413a307e55e07643",
+     [
+      null,
+      {}
+     ]
+    ],
+    "iframe-focus-with-same-as-top-intermediate-frame.html": [
+     "b4763f9e2fae085eab5d8c0bddc89ecefd5f4cbf",
+     [
+      null,
+      {}
+     ]
     ]
    },
    "font-access": {
@@ -483352,7 +483423,7 @@
         ]
        ],
        "focus-events.html": [
-        "d63362aaa1828f35de410b56c1ccc2d7869a111e",
+        "5f8ca20a13d85427fa3d304254d0156224734248",
         [
          null,
          {}
@@ -513181,6 +513252,15 @@
       }
      ]
     ],
+    "pointerevent_element_haspointercapture_release_pending_capture.html": [
+     "e75dff867528d91d62b14ac7e48d822626deba34",
+     [
+      null,
+      {
+       "testdriver": true
+      }
+     ]
+    ],
     "pointerevent_fractional_coordinates.html": [
      "b106340efd5d05ba4ab4281863a476dbe6134a64",
      [
@@ -513451,6 +513531,15 @@
       }
      ]
     ],
+    "pointerevent_releasepointercapture_release_right_after_capture.html": [
+     "409951b918aa6ef9de4603ac97f330085080e2b7",
+     [
+      null,
+      {
+       "testdriver": true
+      }
+     ]
+    ],
     "pointerevent_root_computed_style.html": [
      "c3034d475eee8c58ed1b079fce9466925c5d0379",
      [
@@ -513510,6 +513599,15 @@
       }
      ]
     ],
+    "pointerevent_setpointercapture_override_pending_capture_element.html": [
+     "f7c1d4299192f28ac8b3b99142951876f3155b45",
+     [
+      null,
+      {
+       "testdriver": true
+      }
+     ]
+    ],
     "pointerevent_setpointercapture_relatedtarget.html": [
      "37de34d5a68375b44106f705164d46be78c57780",
      [
@@ -513519,6 +513617,15 @@
       }
      ]
     ],
+    "pointerevent_setpointercapture_to_same_element_twice.html": [
+     "5225ac508d42dca00b0a7269c8a4f95350545d64",
+     [
+      null,
+      {
+       "testdriver": true
+      }
+     ]
+    ],
     "pointerevent_suppress_compat_events_on_click.html": [
      "2f99e7a976ac8006cff25b9cde1ee1e29b6a14d1",
      [
@@ -532076,7 +532183,7 @@
      ]
     ],
     "ShadowRoot-interface.html": [
-     "8efa50e4ea18cc6655dba923cdcf4f6e59029c5b",
+     "e95b1d9542e2e3b502693e0063de0980f5a32789",
      [
       null,
       {}
@@ -589877,6 +589984,13 @@
         {}
        ]
       ],
+      "events.py": [
+       "e3d32c1bcb44c7eb3b810fbce5ca0709c97abcd9",
+       [
+        null,
+        {}
+       ]
+      ],
       "file_upload.py": [
        "73832d0f85ae683ee2d1f54e9c0b7e3e432e9afd",
        [
@@ -590796,7 +590910,7 @@
        ]
       ],
       "key_events.py": [
-       "c3958015bfd4dee51842a642e6762aafb5fabf2d",
+       "8dbe024d18396f010b2dcac7281b8436b5b69c65",
        [
         null,
         {
@@ -590833,7 +590947,7 @@
        ]
       ],
       "pointer.py": [
-       "9579a57aa7222d8a1f9517ad71735e86ec8a0e47",
+       "674d46d7b610294b6cadabb4e1e46d79cab8940d",
        [
         null,
         {
@@ -590842,21 +590956,21 @@
        ]
       ],
       "pointer_contextmenu.py": [
-       "fda3f18bbc1c9cdcede30abe74f6d4e2f297d48f",
+       "50f684327f2ab044905cbd3b0da59336ead25f20",
        [
         null,
         {}
        ]
       ],
       "pointer_dblclick.py": [
-       "8c89cef5f380d769705be704698232c7f9c928ec",
+       "5be635a4d5604e33bf61c41b2190e620309179b8",
        [
         null,
         {}
        ]
       ],
       "pointer_modifier_click.py": [
-       "ba81f6d090b248c512cf896bc8e6059f252db8c8",
+       "28c4086e0f8c99d9350523b8a29478b7c54fa17e",
        [
         null,
         {}
@@ -590870,14 +590984,14 @@
        ]
       ],
       "pointer_pause_dblclick.py": [
-       "85679f3614a8fe010cba7dcd698ce5e82bc26660",
+       "d46178a1d650828ef84ccb02f08a12b292f4c3eb",
        [
         null,
         {}
        ]
       ],
       "pointer_tripleclick.py": [
-       "3bf41bab849d5de742f8707eb98337e24ebbfb6d",
+       "8239fc2a60620fe4ea6616a0a15139ece54e8cad",
        [
         null,
         {}
@@ -590909,7 +591023,7 @@
        ]
       ],
       "wheel.py": [
-       "fc84f2f2e0148967464505f83317edac2e54bd84",
+       "67734800b19d3b08f934c8ec8c4dab0c4cd425f1",
        [
         null,
         {}
@@ -590970,7 +591084,7 @@
        ]
       ],
       "sequence.py": [
-       "2d816f8094b3975523904c9e197390dfc058dd06",
+       "75143d85ca600b3e3a2d7d5ac3679a26b7d7bf5a",
        [
         null,
         {
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/css-transforms/transform-scale-hittest.html.ini b/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
index f8e7e539aae..4a1e8110f6f 100644
--- a/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
+++ b/tests/wpt/metadata/css/css-transforms/transform-scale-hittest.html.ini
@@ -2,6 +2,3 @@
   [Hit test intersecting scaled box]
     expected: FAIL
 
-  [Hit test within unscaled box]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/cssom-view/elementFromPoint-001.html.ini b/tests/wpt/metadata/css/cssom-view/elementFromPoint-001.html.ini
deleted file mode 100644
index e38782d8c85..00000000000
--- a/tests/wpt/metadata/css/cssom-view/elementFromPoint-001.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[elementFromPoint-001.html]
-  [CSSOM View - 5 - extensions to the Document interface]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini b/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini
deleted file mode 100644
index e6e1f29e274..00000000000
--- a/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[matchMedia-display-none-iframe.html]
-  expected: ERROR
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 ae266990efc..733900c669c 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -309,15 +309,21 @@
   [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/plain */*;charset=gbk]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
+  [<iframe>: combined response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
+  [<iframe>: separate response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/plain */*]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;x=" 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..5c001592859 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 +56,6 @@
   [separate text/javascript x/x]
     expected: FAIL
 
+  [separate text/javascript;charset=windows-1252 error 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 30e1b851fd4..a698534cfa0 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,3 +11,9 @@
   [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'NosniFF']
+    expected: FAIL
+
+  [X-Content-Type-Options%3A%20%40%23%24%23%25%25%26%5E%26%5E*()()11!%2Cnosniff]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
similarity index 71%
rename from tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
rename to tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
index dc2e45516de..385376c7321 100644
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
@@ -1,4 +1,4 @@
-[traverse_the_history_5.html]
+[traverse_the_history_4.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/browsers/windows/embedded-opener-remove-frame.html.ini b/tests/wpt/metadata/html/browsers/windows/embedded-opener-remove-frame.html.ini
index 2532dceabac..442db3cb549 100644
--- a/tests/wpt/metadata/html/browsers/windows/embedded-opener-remove-frame.html.ini
+++ b/tests/wpt/metadata/html/browsers/windows/embedded-opener-remove-frame.html.ini
@@ -1,5 +1,4 @@
 [embedded-opener-remove-frame.html]
-  expected: CRASH
   [opener and "removed" embedded documents]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/interaction/focus/focus-management/focus-events.html.ini b/tests/wpt/metadata/html/interaction/focus/focus-management/focus-events.html.ini
new file mode 100644
index 00000000000..3d143c88e67
--- /dev/null
+++ b/tests/wpt/metadata/html/interaction/focus/focus-management/focus-events.html.ini
@@ -0,0 +1,4 @@
+[focus-events.html]
+  [focusing on a focusable element fires a blur event at the previous focussed element]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini b/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
index 6b68e9094e4..d1ca01ebc5f 100644
--- a/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
+++ b/tests/wpt/metadata/html/interaction/focus/the-autofocus-attribute/supported-elements.html.ini
@@ -1,4 +1,5 @@
 [supported-elements.html]
+  expected: TIMEOUT
   [Contenteditable element should support autofocus]
     expected: FAIL
 
@@ -9,7 +10,7 @@
     expected: FAIL
 
   [Area element should support autofocus]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Host element with delegatesFocus should support autofocus]
     expected: FAIL
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
index fc37df7e3fa..2a166bb97b7 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_escaping-1.html]
   type: testharness
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index 963d4cd20ef..9df1ac56f2a 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_nonescaping-1.html]
   type: testharness
-  expected: CRASH
+  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
index 3a32693ffa8..06bbed1fcac 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-2.html.ini
@@ -1,5 +1,6 @@
 [iframe_sandbox_popups_nonescaping-2.html]
   type: testharness
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/semantics/forms/textfieldselection/select-event.html.ini b/tests/wpt/metadata/html/semantics/forms/textfieldselection/select-event.html.ini
index 85d9f9bff2a..11a105c7b93 100644
--- a/tests/wpt/metadata/html/semantics/forms/textfieldselection/select-event.html.ini
+++ b/tests/wpt/metadata/html/semantics/forms/textfieldselection/select-event.html.ini
@@ -1,7 +1,4 @@
 [select-event.html]
-  [input type search: setSelectionRange out of range a second time (must not fire select)]
-    expected: FAIL
-
   [textarea: selectionDirection a second time (must not fire select)]
     expected: FAIL
 
@@ -14,24 +11,9 @@
   [input type text: setSelectionRange out of range a second time (must not fire select)]
     expected: FAIL
 
-  [input type password: select() a second time (must not fire select)]
-    expected: FAIL
-
   [input type url: selectionEnd out of range a second time (must not fire select)]
     expected: FAIL
 
-  [textarea: setSelectionRange() a second time (must not fire select)]
-    expected: FAIL
-
-  [input type search: selectionEnd a second time (must not fire select)]
-    expected: FAIL
-
-  [input type password: setRangeText() a second time (must not fire select)]
-    expected: FAIL
-
-  [input type tel: setSelectionRange out of range a second time (must not fire select)]
-    expected: FAIL
-
   [textarea: selectionStart out of range a second time (must not fire select)]
     expected: FAIL
 
@@ -44,30 +26,54 @@
   [input type password: selectionStart a second time (must not fire select)]
     expected: FAIL
 
-  [input type password: setSelectionRange out of range a second time (must not fire select)]
-    expected: FAIL
-
-  [textarea: selectionStart a second time (must not fire select)]
-    expected: FAIL
-
-  [input type text: selectionEnd out of range a second time (must not fire select)]
-    expected: FAIL
-
   [input type tel: setSelectionRange() a second time (must not fire select)]
     expected: FAIL
 
   [input type url: selectionDirection a second time (must not fire select)]
     expected: FAIL
 
-  [input type password: selectionEnd a second time (must not fire select)]
-    expected: FAIL
-
   [input type text: selectionStart a second time (must not fire select)]
     expected: FAIL
 
-  [input type password: selectionStart out of range a second time (must not fire select)]
+  [textarea: selectionEnd a second time (must not fire select)]
     expected: FAIL
 
-  [input type url: setSelectionRange out of range a second time (must not fire select)]
+  [input type url: setSelectionRange() a second time (must not fire select)]
+    expected: FAIL
+
+  [input type url: selectionEnd a second time (must not fire select)]
+    expected: FAIL
+
+  [input type password: selectionEnd out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type url: selectionStart out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type tel: selectionStart out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type tel: selectionDirection a second time (must not fire select)]
+    expected: FAIL
+
+  [input type url: select() a second time (must not fire select)]
+    expected: FAIL
+
+  [input type search: selectionDirection a second time (must not fire select)]
+    expected: FAIL
+
+  [textarea: setSelectionRange out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type text: selectionStart out of range a second time (must not fire select)]
+    expected: FAIL
+
+  [input type text: setRangeText() a second time (must not fire select)]
+    expected: FAIL
+
+  [input type tel: select() a second time (must not fire select)]
+    expected: FAIL
+
+  [input type tel: selectionStart a second time (must not fire select)]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini b/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
index edae5e5adcd..01f7b72cbe7 100644
--- a/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
+++ b/tests/wpt/metadata/html/webappapis/scripting/events/compile-event-handler-settings-objects.html.ini
@@ -5,5 +5,5 @@
     expected: TIMEOUT
 
   [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
index a56bad443a2..66bd350083b 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini
@@ -1,5 +1,4 @@
 [realtimeanalyser-fft-scaling.html]
-  expected: TIMEOUT
   [X 2048-point FFT peak position is not equal to 64. Got 0.]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
index 4ea3ff94677..f4f476cfcef 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/sub-sample-buffer-stitching.html.ini
@@ -776,3 +776,6 @@
   [X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[28696\]\t1.9545141262291947e-15\t9.3139332532882690e-1\t9.3139332532882491e-1\t9.9999999999999789e-1\t3.8985999999999999e-3\n\t[28697\]\t7.0477002859115601e-1\t9.0675884485244751e-1\t2.0198881626129150e-1\t2.2275913536212616e-1\t3.8985999999999999e-3\n\tMax AbsError of 9.3139332532882491e-1 at index of 28696.\n\tMax RelError of 9.9999999999999789e-1 at index of 28696.\n]
     expected: FAIL
 
+  [X Stitched sine-wave buffers at sample rate 43800 does not equal [0,0.06264832615852356,0.12505052983760834,0.18696144223213196,0.24813786149024963,0.308339387178421,0.36732959747314453,0.4248766601085663,0.480754554271698,0.5347436666488647,0.5866320133209229,0.6362156271934509,0.6832997798919678,0.7276994585990906,0.7692402601242065,0.8077589869499207...\] with an element-wise tolerance of {"absoluteThreshold":0.0038986,"relativeThreshold":0}.\n\tIndex\tActual\t\t\tExpected\t\tAbsError\t\tRelError\t\tTest threshold\n\t[28696\]\t-1.1388699060609259e-22\t9.3139332532882690e-1\t9.3139332532882690e-1\t1.0000000000000000e+0\t3.8985999999999999e-3\n\t[28697\]\t7.0477002859115601e-1\t9.0675884485244751e-1\t2.0198881626129150e-1\t2.2275913536212616e-1\t3.8985999999999999e-3\n\tMax AbsError of 9.3139332532882690e-1 at index of 28696.\n\tMax RelError of 1.0000000000000000e+0 at index of 28696.\n]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webdriver/tests/element_click/events.py.ini b/tests/wpt/metadata/webdriver/tests/element_click/events.py.ini
new file mode 100644
index 00000000000..484ebb8a916
--- /dev/null
+++ b/tests/wpt/metadata/webdriver/tests/element_click/events.py.ini
@@ -0,0 +1,4 @@
+[events.py]
+  [test_event_mousemove]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/webmessaging/with-ports/017.html.ini b/tests/wpt/metadata/webmessaging/with-ports/017.html.ini
deleted file mode 100644
index 064cf47545b..00000000000
--- a/tests/wpt/metadata/webmessaging/with-ports/017.html.ini
+++ /dev/null
@@ -1,5 +0,0 @@
-[017.html]
-  expected: TIMEOUT
-  [origin of the script that invoked the method, about:blank]
-    expected: TIMEOUT
-
diff --git a/tests/wpt/metadata/webmessaging/with-ports/018.html.ini b/tests/wpt/metadata/webmessaging/with-ports/018.html.ini
new file mode 100644
index 00000000000..663a1f8fa30
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/with-ports/018.html.ini
@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/workers/constructors/Worker/Worker-constructor.html.ini b/tests/wpt/metadata/workers/constructors/Worker/Worker-constructor.html.ini
deleted file mode 100644
index 80f9a4f15b8..00000000000
--- a/tests/wpt/metadata/workers/constructors/Worker/Worker-constructor.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[Worker-constructor.html]
-  expected: ERROR
diff --git a/tests/wpt/web-platform-tests/custom-state-pseudo-class/idlharness.window.js b/tests/wpt/web-platform-tests/custom-state-pseudo-class/idlharness.window.js
index dccc0f56f46..d5d40c54616 100644
--- a/tests/wpt/web-platform-tests/custom-state-pseudo-class/idlharness.window.js
+++ b/tests/wpt/web-platform-tests/custom-state-pseudo-class/idlharness.window.js
@@ -3,12 +3,18 @@
 
 'use strict';
 
+class MyElement extends HTMLElement {};
+customElements.define('my-element', MyElement);
+
 idl_test(
   ['custom-state-pseudo-class'],
   ['html', 'wai-aria'],
   idl_array => {
     idl_array.add_objects({
-      // Nothing to add; spec only defined a partial interface.
+      CustomStateSet: [ 'customStateSet' ],
     });
+
+    const myElement = document.createElement('my-element');
+    self.customStateSet = myElement.attachInternals().states;
   }
 );
diff --git a/tests/wpt/web-platform-tests/focus/iframe-activeelement-after-focusing-out-iframes.html b/tests/wpt/web-platform-tests/focus/iframe-activeelement-after-focusing-out-iframes.html
new file mode 100644
index 00000000000..832b2675e25
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/iframe-activeelement-after-focusing-out-iframes.html
@@ -0,0 +1,50 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>iframe activeElement after focusing out iframe</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+function waitForEvent(target, event, checkFn) {
+  return new Promise(resolve => {
+    target.addEventListener(event, e => {
+      if (checkFn && !checkFn(e)) {
+        return;
+      }
+      resolve();
+    }, { once: true });
+  });
+}
+
+function focusTopLevel(w) {
+  w.postMessage("focus", "*");
+}
+
+async function getLog(w) {
+  let log = "";
+  step_timeout(function() {
+    w.postMessage("getlog", "*");
+  }, 0);
+  await waitForEvent(window, "message", (e) => {
+    log = e.data;
+    return true;
+  });
+  return log;
+}
+
+async function runTest(t, url) {
+  let w = window.open(url);
+  t.add_cleanup(() => { w.close(); });
+  await waitForEvent(window, "message", e => e.data === "ready");
+  focusTopLevel(w);
+  assert_equals(await getLog(w), 'outerlog:willfocusinput,windowfocus,didfocusinput,innerlog:willfocusinput,windowfocus,didfocusinput,activeElement:INPUT,windowblur,activeElement:BODY,');
+}
+
+promise_test(async t => {
+  await runTest(t, "support/iframe-activeelement-after-focusing-out-different-site-iframes-outer.sub.html");
+}, "Check iframe activeElement after focusing out different site iframe");
+
+promise_test(async t => {
+  await runTest(t, "support/iframe-activeelement-after-focusing-out-same-site-iframes-outer.html");
+}, "Check iframe activeElement after focusing out same site iframe");
+
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/iframe-contentwindow-focus-with-different-site-intermediate-frame.html b/tests/wpt/web-platform-tests/focus/iframe-contentwindow-focus-with-different-site-intermediate-frame.html
new file mode 100644
index 00000000000..2fdc8e843a1
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/iframe-contentwindow-focus-with-different-site-intermediate-frame.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>iframe.contentWindow.focus() with different-site intermediate frame</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        assert_equals(actual, "outeronload;outeractivelement:body;starttest;middleactivelement:body;callfocus;middleactivelement:iframe;innerfocus;middletimer;middleactivelement:iframe;outeractivelement:iframe;", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/iframe-contentwindow-focus-with-different-site-intermediate-frame-outer.sub.html");
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/iframe-contentwindow-focus-with-same-as-top-intermediate-frame.html b/tests/wpt/web-platform-tests/focus/iframe-contentwindow-focus-with-same-as-top-intermediate-frame.html
new file mode 100644
index 00000000000..cb9239f44d8
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/iframe-contentwindow-focus-with-same-as-top-intermediate-frame.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>iframe.contentWindow.focus() with same-as-top intermediate frame</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        assert_equals(actual, "outeronload;outeractivelement:body;starttest;middleactivelement:body;callfocus;middleactivelement:iframe;innerfocus;middletimer;middleactivelement:iframe;outeractivelement:iframe;", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-outer.html");
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/iframe-focus-with-different-site-intermediate-frame.html b/tests/wpt/web-platform-tests/focus/iframe-focus-with-different-site-intermediate-frame.html
new file mode 100644
index 00000000000..fd3aab70579
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/iframe-focus-with-different-site-intermediate-frame.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>iframe.focus() with different-site intermediate frame</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        assert_equals(actual, "outeronload;outeractivelement:body;starttest;middleactivelement:body;callfocus;middleactivelement:iframe;innerfocus;middletimer;middleactivelement:iframe;outeractivelement:iframe;", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/iframe-focus-with-different-site-intermediate-frame-outer.sub.html");
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/iframe-focus-with-same-as-top-intermediate-frame.html b/tests/wpt/web-platform-tests/focus/iframe-focus-with-same-as-top-intermediate-frame.html
new file mode 100644
index 00000000000..b4763f9e2fa
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/iframe-focus-with-same-as-top-intermediate-frame.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>iframe.focus() with same-as-top intermediate frame</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+setup({explicit_done:true});
+window.onmessage = function(e) {
+    var actual = e.data;
+    test(function() {
+        assert_equals(actual, "outeronload;outeractivelement:body;starttest;middleactivelement:body;callfocus;middleactivelement:iframe;innerfocus;middletimer;middleactivelement:iframe;outeractivelement:iframe;", 'Check log');
+    }, "Check result");
+    w.close();
+    done();
+};
+var w = window.open("support/iframe-focus-with-same-as-top-intermediate-frame-outer.html");
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-different-site-iframes-outer.sub.html b/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-different-site-iframes-outer.sub.html
new file mode 100644
index 00000000000..3fcebfc8ba4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-different-site-iframes-outer.sub.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe active element after focusing out different site iframes outer</title>
+<input></input></br>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/iframe-activeelement-after-focusing-out-iframes-inner.html"></iframe>
+<script>
+let outerlog = "outerlog:";
+
+let input = document.querySelector("input");
+let iframe = document.querySelector("iframe");
+window.onmessage = function(e) {
+  if (e.data == "ready") {
+    opener.postMessage("ready", "*");
+  } else if (e.data == "focus") {
+    outerlog += "willfocusinput,";
+    input.focus();
+    outerlog += "didfocusinput,";
+  } else if (e.data == "getlog") {
+    iframe.contentWindow.postMessage("getlog", "*");
+  } else {
+    opener.postMessage(outerlog + e.data, "*");
+  }
+};
+
+window.onload = function() {
+  window.onfocus = function() {
+    outerlog += "windowfocus,";
+  };
+
+  window.onblur = function() {
+    outerlog += "windowblur,";
+  };
+};
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-iframes-inner.html b/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-iframes-inner.html
new file mode 100644
index 00000000000..a94af6b9fba
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-iframes-inner.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>iframe active element inner document</title>
+</head>
+<body>
+<h1>Inner</h1><br>
+<input></input>
+<script>
+let innerlog = "innerlog:";
+
+window.onmessage = function(e) {
+  if (e.data == "getlog") {
+    parent.postMessage(innerlog, "*");
+  }
+};
+
+window.onfocus = function() {
+  innerlog += "windowfocus,";
+};
+
+window.onblur = function() {
+  innerlog += "windowblur,";
+  innerlog += "activeElement:" + document.activeElement.tagName + ",";
+};
+
+let input = document.querySelector("input");
+window.onload = function() {
+  innerlog += "willfocusinput,";
+  input.focus();
+  innerlog += "didfocusinput,";
+  innerlog += "activeElement:" + document.activeElement.tagName + ",";
+  parent.postMessage("ready", "*");
+};
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-same-site-iframes-outer.html b/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-same-site-iframes-outer.html
new file mode 100644
index 00000000000..98399deb7b6
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-activeelement-after-focusing-out-same-site-iframes-outer.html
@@ -0,0 +1,34 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe active element after focusing out same site iframes outer</title>
+<input></input></br>
+<iframe src="iframe-activeelement-after-focusing-out-iframes-inner.html"></iframe>
+<script>
+let outerlog = "outerlog:";
+
+let input = document.querySelector("input");
+let iframe = document.querySelector("iframe");
+window.onmessage = function(e) {
+  if (e.data == "ready") {
+    opener.postMessage("ready", "*");
+  } else if (e.data == "focus") {
+    outerlog += "willfocusinput,";
+    input.focus();
+    outerlog += "didfocusinput,";
+  } else if (e.data == "getlog") {
+    iframe.contentWindow.postMessage("getlog", "*");
+  } else {
+    opener.postMessage(outerlog + e.data, "*");
+  }
+};
+
+window.onload = function() {
+  window.onfocus = function() {
+    outerlog += "windowfocus,";
+  };
+
+  window.onblur = function() {
+    outerlog += "windowblur,";
+  };
+};
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-inner.html b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-inner.html
new file mode 100644
index 00000000000..c4997f5bd4f
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-inner.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>iframe.contentWindow.focus() with different-site intermediate frame inner</title>
+</head>
+<body>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerfocus;", "*");
+}
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-middle.sub.html b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-middle.sub.html
new file mode 100644
index 00000000000..e3a5facf82e
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-middle.sub.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe.contentWindow.focus() with different-site intermediate frame middle</title>
+<iframe src="http://{{hosts[][www]}}:{{ports[http][0]}}/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-inner.html"></iframe>
+<script>
+let iframe = document.getElementsByTagName("iframe")[0];
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+    if (e.data == "starttest;") {
+        log += "middleactivelement:" + document.activeElement.localName + ";";
+        log += "callfocus;";
+        iframe.contentWindow.focus();
+        log += "middleactivelement:" + document.activeElement.localName + ";";
+        setTimeout(function() {
+            log += "middletimer;middleactivelement:" + document.activeElement.localName + ";";
+            parent.postMessage(getLog(), "*");
+        }, 1500);
+    }
+};
+/*
+ * TODO: Get browsers to agree on this one.
+ *
+ * Does not fire in Firefox without Fission
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=1675484
+ *
+ * Fires in Blink in the iframe.focus() case but not in
+ * the iframe.contentWindow.focus() case.
+ */
+// iframe.onfocus = function() {
+//     log += "middlefocus;";
+// }
+
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-outer.sub.html b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-outer.sub.html
new file mode 100644
index 00000000000..9dbb6af9d9a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-outer.sub.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe.contentWindow.focus() with different-site intermediate frame outer</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+window.onload = function() {
+    log += "outeronload;";
+    log += "outeractivelement:" + document.activeElement.localName + ";";
+    document.getElementsByTagName("iframe")[0].contentWindow.postMessage("starttest;", "*");
+    setTimeout(function() {
+        log += "outeractivelement:" + document.activeElement.localName + ";";
+        opener.postMessage(getLog(), "*");
+    }, 3000);
+}
+</script>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-middle.sub.html"></iframe>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-inner.html b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-inner.html
new file mode 100644
index 00000000000..30be12aa811
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-inner.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>iframe.contentWindow.focus() with same-as-top intermediate frame inner</title>
+</head>
+<body>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerfocus;", "*");
+}
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-middle.sub.html b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-middle.sub.html
new file mode 100644
index 00000000000..747e1467466
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-middle.sub.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe.contentWindow.focus() with same-as-top intermediate frame middle</title>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-inner.html"></iframe>
+<script>
+let iframe = document.getElementsByTagName("iframe")[0];
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+    if (e.data == "starttest;") {
+        log += "middleactivelement:" + document.activeElement.localName + ";";
+        log += "callfocus;";
+        iframe.contentWindow.focus();
+        log += "middleactivelement:" + document.activeElement.localName + ";";
+        parent.opener.step_timeout(function() {
+            log += "middletimer;middleactivelement:" + document.activeElement.localName + ";";
+            parent.postMessage(getLog(), "*");
+        }, 1500);
+    }
+};
+/*
+ * TODO: Get browsers to agree on this one.
+ *
+ * Does not fire in Firefox without Fission
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=1675484
+ *
+ * Fires in Blink in the iframe.focus() case but not in
+ * the iframe.contentWindow.focus() case.
+ */
+// iframe.onfocus = function() {
+//     log += "middlefocus;";
+// }
+
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-outer.html b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-outer.html
new file mode 100644
index 00000000000..71cfe78c0d7
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-contentwindow-focus-with-same-as-top-intermediate-frame-outer.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe.contentWindow.focus() with same-as-top intermediate frame outer</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+window.onload = function() {
+    log += "outeronload;";
+        log += "outeractivelement:" + document.activeElement.localName + ";";
+    document.getElementsByTagName("iframe")[0].contentWindow.postMessage("starttest;", "*");
+    opener.step_timeout(function() {
+        log += "outeractivelement:" + document.activeElement.localName + ";";
+        opener.postMessage(getLog(), "*");
+    }, 2000);
+}
+</script>
+<iframe src="iframe-contentwindow-focus-with-same-as-top-intermediate-frame-middle.sub.html"></iframe>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-inner.html b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-inner.html
new file mode 100644
index 00000000000..e2adcc06b20
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-inner.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>iframe.focus() with different-site intermediate frame inner</title>
+</head>
+<body>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerfocus;", "*");
+}
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-middle.sub.html b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-middle.sub.html
new file mode 100644
index 00000000000..647f8928d6d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-middle.sub.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe.focus() with different-site intermediate frame middle</title>
+<iframe src="http://{{hosts[][www]}}:{{ports[http][0]}}/focus/support/iframe-focus-with-different-site-intermediate-frame-inner.html"></iframe>
+<script>
+let iframe = document.getElementsByTagName("iframe")[0];
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+    if (e.data == "starttest;") {
+        log += "middleactivelement:" + document.activeElement.localName + ";";
+        log += "callfocus;";
+        iframe.focus();
+        log += "middleactivelement:" + document.activeElement.localName + ";";
+        setTimeout(function() {
+            log += "middletimer;middleactivelement:" + document.activeElement.localName + ";";
+            parent.postMessage(getLog(), "*");
+        }, 1500);
+    }
+};
+/*
+ * TODO: Get browsers to agree on this one.
+ *
+ * Does not fire in Firefox without Fission
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=1675484
+ *
+ * Fires in Blink in the iframe.focus() case but not in
+ * the iframe.contentWindow.focus() case.
+ */
+// iframe.onfocus = function() {
+//     log += "middlefocus;";
+// }
+
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-outer.sub.html b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-outer.sub.html
new file mode 100644
index 00000000000..5e80410206d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-different-site-intermediate-frame-outer.sub.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe.focus() with different-site intermediate frame outer</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+window.onload = function() {
+    log += "outeronload;";
+    log += "outeractivelement:" + document.activeElement.localName + ";";
+    document.getElementsByTagName("iframe")[0].contentWindow.postMessage("starttest;", "*");
+    setTimeout(function() {
+        log += "outeractivelement:" + document.activeElement.localName + ";";
+        opener.postMessage(getLog(), "*");
+    }, 3000);
+}
+</script>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/iframe-focus-with-different-site-intermediate-frame-middle.sub.html"></iframe>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-inner.html b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-inner.html
new file mode 100644
index 00000000000..c55c5b44998
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-inner.html
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>iframe.focus() with same-as-top intermediate frame inner</title>
+</head>
+<body>
+<script>
+document.body.onfocus = function() {
+    parent.postMessage("innerfocus;", "*");
+}
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-middle.sub.html b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-middle.sub.html
new file mode 100644
index 00000000000..9fdbc3c3582
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-middle.sub.html
@@ -0,0 +1,37 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe.focus() with same-as-top intermediate frame middle</title>
+<iframe src="http://{{hosts[alt][www]}}:{{ports[http][0]}}/focus/support/iframe-focus-with-same-as-top-intermediate-frame-inner.html"></iframe>
+<script>
+let iframe = document.getElementsByTagName("iframe")[0];
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+    if (e.data == "starttest;") {
+        log += "middleactivelement:" + document.activeElement.localName + ";";
+        log += "callfocus;";
+        iframe.focus();
+        log += "middleactivelement:" + document.activeElement.localName + ";";
+        parent.opener.step_timeout(function() {
+            log += "middletimer;middleactivelement:" + document.activeElement.localName + ";";
+            parent.postMessage(getLog(), "*");
+        }, 1500);
+    }
+};
+/*
+ * TODO: Get browsers to agree on this one.
+ *
+ * Does not fire in Firefox without Fission
+ * https://bugzilla.mozilla.org/show_bug.cgi?id=1675484
+ *
+ * Fires in Blink in the iframe.focus() case but not in
+ * the iframe.contentWindow.focus() case.
+ */
+// iframe.onfocus = function() {
+//     log += "middlefocus;";
+// }
+
+</script>
diff --git a/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-outer.html b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-outer.html
new file mode 100644
index 00000000000..3f6085a739c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/focus/support/iframe-focus-with-same-as-top-intermediate-frame-outer.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<meta charset="utf-8">
+<title>iframe.focus() with same-as-top intermediate frame outer</title>
+<script>
+let log = "";
+function getLog() {
+    return log;
+}
+window.onmessage = function(e) {
+    log += e.data;
+};
+window.onload = function() {
+    log += "outeronload;";
+        log += "outeractivelement:" + document.activeElement.localName + ";";
+    document.getElementsByTagName("iframe")[0].contentWindow.postMessage("starttest;", "*");
+    opener.step_timeout(function() {
+        log += "outeractivelement:" + document.activeElement.localName + ";";
+        opener.postMessage(getLog(), "*");
+    }, 2000);
+}
+</script>
+<iframe src="iframe-focus-with-same-as-top-intermediate-frame-middle.sub.html"></iframe>
diff --git a/tests/wpt/web-platform-tests/html/interaction/focus/focus-management/focus-events.html b/tests/wpt/web-platform-tests/html/interaction/focus/focus-management/focus-events.html
index d63362aaa18..5f8ca20a13d 100644
--- a/tests/wpt/web-platform-tests/html/interaction/focus/focus-management/focus-events.html
+++ b/tests/wpt/web-platform-tests/html/interaction/focus/focus-management/focus-events.html
@@ -25,6 +25,7 @@
     assert_true(e.isTrusted, "blur event is trusted");
     assert_false(e.bubbles, "blur event doesn't bubble");
     assert_false(e.cancelable, "blur event is not cancelable");
+    assert_equals(document.activeElement, document.body);
   });
 
   i1.focus();
diff --git a/tests/wpt/web-platform-tests/interfaces/custom-state-pseudo-class.idl b/tests/wpt/web-platform-tests/interfaces/custom-state-pseudo-class.idl
index d4e3da7e6a1..342f1ede0b0 100644
--- a/tests/wpt/web-platform-tests/interfaces/custom-state-pseudo-class.idl
+++ b/tests/wpt/web-platform-tests/interfaces/custom-state-pseudo-class.idl
@@ -4,5 +4,11 @@
 // Source: Custom State Pseudo Class (https://wicg.github.io/custom-state-pseudo-class/)
 
 partial interface ElementInternals {
-  [SameObject, PutForwards=value] readonly attribute DOMTokenList states;
+  readonly attribute CustomStateSet states;
+};
+
+[Exposed=Window]
+interface CustomStateSet {
+  setlike<DOMString>;
+  undefined add(DOMString value);
 };
diff --git a/tests/wpt/web-platform-tests/lint.ignore b/tests/wpt/web-platform-tests/lint.ignore
index 2e0fc8b39bc..ab3d0e51570 100644
--- a/tests/wpt/web-platform-tests/lint.ignore
+++ b/tests/wpt/web-platform-tests/lint.ignore
@@ -214,6 +214,10 @@ SET TIMEOUT: webvtt/*
 SET TIMEOUT: workers/*
 SET TIMEOUT: xhr/resources/init.htm
 SET TIMEOUT: xhr/resources/xmlhttprequest-timeout.js
+SET TIMEOUT: focus/support/iframe-focus-with-different-site-intermediate-frame-outer.sub.html
+SET TIMEOUT: focus/support/iframe-focus-with-different-site-intermediate-frame-middle.sub.html
+SET TIMEOUT: focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-outer.sub.html
+SET TIMEOUT: focus/support/iframe-contentwindow-focus-with-different-site-intermediate-frame-middle.sub.html
 
 # generate_tests implementation and sample usage
 GENERATE_TESTS: resources/test/tests/functional/generate-callback.html
diff --git a/tests/wpt/web-platform-tests/pointerevents/pointerevent_element_haspointercapture_release_pending_capture-manual.html b/tests/wpt/web-platform-tests/pointerevents/pointerevent_element_haspointercapture_release_pending_capture.html
similarity index 83%
rename from tests/wpt/web-platform-tests/pointerevents/pointerevent_element_haspointercapture_release_pending_capture-manual.html
rename to tests/wpt/web-platform-tests/pointerevents/pointerevent_element_haspointercapture_release_pending_capture.html
index 17ad3e24ba4..e75dff86752 100644
--- a/tests/wpt/web-platform-tests/pointerevents/pointerevent_element_haspointercapture_release_pending_capture-manual.html
+++ b/tests/wpt/web-platform-tests/pointerevents/pointerevent_element_haspointercapture_release_pending_capture.html
@@ -6,8 +6,12 @@
         <link rel="stylesheet" type="text/css" href="pointerevent_styles.css">
         <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 type="text/javascript" src="pointerevent_support.js"></script>
         <script>
+            var actions_promise;
             var detected_pointertypes = {};
             add_completion_callback(showPointerTypes);
             var test_pointerEvent = async_test("hasPointerCapture test after the pending pointer capture element releases pointer capture");
@@ -47,8 +51,19 @@
                 });
 
                 on_event(target0, "lostpointercapture", function (e) {
-                    test_pointerEvent.done();
+                    // Make sure the test finishes after all the input actions are completed.
+                    actions_promise.then( () => {
+                        test_pointerEvent.done();
+                    });
                 });
+
+                // Inject mouse inputs.
+                actions_promise = new test_driver.Actions()
+                    .pointerMove(10, 10, {origin: target0})
+                    .pointerDown()
+                    .pointerMove(10, 10, {origin: target1})
+                    .pointerUp()
+                    .send();
             }
         </script>
     </head>
diff --git a/tests/wpt/web-platform-tests/pointerevents/pointerevent_releasepointercapture_release_right_after_capture-manual.html b/tests/wpt/web-platform-tests/pointerevents/pointerevent_releasepointercapture_release_right_after_capture.html
similarity index 78%
rename from tests/wpt/web-platform-tests/pointerevents/pointerevent_releasepointercapture_release_right_after_capture-manual.html
rename to tests/wpt/web-platform-tests/pointerevents/pointerevent_releasepointercapture_release_right_after_capture.html
index 8f64b920873..409951b918a 100644
--- a/tests/wpt/web-platform-tests/pointerevents/pointerevent_releasepointercapture_release_right_after_capture-manual.html
+++ b/tests/wpt/web-platform-tests/pointerevents/pointerevent_releasepointercapture_release_right_after_capture.html
@@ -6,8 +6,12 @@
         <link rel="stylesheet" type="text/css" href="pointerevent_styles.css">
         <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="pointerevent_support.js"></script>
         <script type="text/javascript">
+            var actions_promise;
             var detected_pointertypes = {};
             add_completion_callback(showPointerTypes);
             var test_setPointerCapture = async_test("Release pointer capture right after setpointercapture");
@@ -36,8 +40,19 @@
                 });
 
                 on_event(target0, "pointerup", function (event) {
-                    test_setPointerCapture.done();
+                    // Make sure the test finishes after all the input actions are completed.
+                    actions_promise.then( () => {
+                        test_setPointerCapture.done();
+                    });
                 });
+
+                // Inject mouse inputs.
+                actions_promise = new test_driver.Actions()
+                    .pointerMove(0, 0, {origin: target0})
+                    .pointerDown()
+                    .pointerMove(10, 10, {origin: target0})
+                    .pointerUp()
+                    .send();
             }
         </script>
     </head>
diff --git a/tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_override_pending_capture_element-manual.html b/tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_override_pending_capture_element.html
similarity index 80%
rename from tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_override_pending_capture_element-manual.html
rename to tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_override_pending_capture_element.html
index 4e4818c21b7..f7c1d429919 100644
--- a/tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_override_pending_capture_element-manual.html
+++ b/tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_override_pending_capture_element.html
@@ -6,8 +6,12 @@
         <link rel="stylesheet" type="text/css" href="pointerevent_styles.css">
         <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="pointerevent_support.js"></script>
         <script type="text/javascript">
+            var actions_promise;
             var detected_pointertypes = {};
             add_completion_callback(showPointerTypes);
             var test_setPointerCapture = async_test("setPointerCapture: override the pending pointer capture element");
@@ -38,8 +42,19 @@
                 });
 
                 on_event(target1, "pointerup", function (event) {
-                    test_setPointerCapture.done();
+                    // Make sure the test finishes after all the input actions are completed.
+                    actions_promise.then( () => {
+                        test_setPointerCapture.done();
+                    });
                 });
+
+                // Inject mouse inputs.
+                actions_promise = new test_driver.Actions()
+                    .pointerMove(0, 0, {origin: target0})
+                    .pointerDown()
+                    .pointerMove(10, 10, {origin: target0})
+                    .pointerUp()
+                    .send();
             }
         </script>
     </head>
diff --git a/tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_to_same_element_twice-manual.html b/tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_to_same_element_twice.html
similarity index 80%
rename from tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_to_same_element_twice-manual.html
rename to tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_to_same_element_twice.html
index 161c5c2fcb9..5225ac508d4 100644
--- a/tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_to_same_element_twice-manual.html
+++ b/tests/wpt/web-platform-tests/pointerevents/pointerevent_setpointercapture_to_same_element_twice.html
@@ -6,8 +6,12 @@
         <link rel="stylesheet" type="text/css" href="pointerevent_styles.css">
         <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="pointerevent_support.js"></script>
         <script type="text/javascript">
+            var actions_promise;
             var detected_pointertypes = {};
             add_completion_callback(showPointerTypes);
             var test_setPointerCapture = async_test("setPointerCapture: set to the element which already captured the pointer");
@@ -37,8 +41,19 @@
                 });
 
                 on_event(target0, "pointerup", function (event) {
-                    test_setPointerCapture.done();
+                    // Make sure the test finishes after all the input actions are completed.
+                    actions_promise.then( () => {
+                        test_setPointerCapture.done();
+                    });
                 });
+
+                // Inject mouse inputs.
+                actions_promise = new test_driver.Actions()
+                    .pointerMove(0, 0, {origin: target0})
+                    .pointerDown()
+                    .pointerMove(10, 10, {origin: target0})
+                    .pointerUp()
+                    .send();
             }
         </script>
     </head>
diff --git a/tests/wpt/web-platform-tests/shadow-dom/ShadowRoot-interface.html b/tests/wpt/web-platform-tests/shadow-dom/ShadowRoot-interface.html
index 8efa50e4ea1..e95b1d9542e 100644
--- a/tests/wpt/web-platform-tests/shadow-dom/ShadowRoot-interface.html
+++ b/tests/wpt/web-platform-tests/shadow-dom/ShadowRoot-interface.html
@@ -96,12 +96,19 @@ function testStyleSheets(mode) {
 
         shadowRoot.innerHTML = '<span></span><style> a.rule {} </style><style> b.rule {} </style>';
         assert_equals(shadowRoot.styleSheets.length, 0, 'shadowRoot.styleSheets must be empty when the shadow root is not connected');
+        var styles = shadowRoot.querySelectorAll('style');
+        assert_equals(styles[0].sheet, null, "Sheet should be null in a disconnected tree");
+        assert_equals(styles[1].sheet, null, "Sheet should be null in a disconnected tree");
 
         document.body.appendChild(host);
         assert_equals(shadowRoot.styleSheets.length, 2, 'shadowRoot.styleSheets must contain two items when the shadow root has two style elements');
-        var styles = shadowRoot.querySelectorAll('style');
         assert_equals(shadowRoot.styleSheets[0], styles[0].sheet, 'shadowRoot.styleSheets[0] must be the first style element in the shadow root');
         assert_equals(shadowRoot.styleSheets[1], styles[1].sheet, 'shadowRoot.styleSheets[1] must be the second style element in the shadow root');
+
+        host.remove();
+        assert_equals(shadowRoot.styleSheets.length, 0, 'shadowRoot.styleSheets must be empty when the shadow root is not connected');
+        assert_equals(styles[0].sheet, null, "Sheet should be null in a disconnected tree");
+        assert_equals(styles[1].sheet, null, "Sheet should be null in a disconnected tree");
     }, 'ShadowRoot.styleSheets must return a StyleSheetList sequence containing the shadow root style sheets when shadow root is ' + mode + '.');
 }
 
diff --git a/tests/wpt/web-platform-tests/tools/wptserve/wptserve/stash.py b/tests/wpt/web-platform-tests/tools/wptserve/wptserve/stash.py
index 535355a8287..bf6e59927be 100644
--- a/tests/wpt/web-platform-tests/tools/wptserve/wptserve/stash.py
+++ b/tests/wpt/web-platform-tests/tools/wptserve/wptserve/stash.py
@@ -75,7 +75,10 @@ def start_server(address=None, authkey=None, mp_context=None):
     manager = ServerDictManager(address, authkey, **kwargs)
     manager.start()
 
-    return (manager, manager._address, manager._authkey)
+    address = manager._address
+    if isinstance(address, bytes):
+        address = address.decode("ascii")
+    return (manager, address, manager._authkey)
 
 
 class LockWrapper(object):
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/element_click/events.py b/tests/wpt/web-platform-tests/webdriver/tests/element_click/events.py
new file mode 100644
index 00000000000..e3d32c1bcb4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webdriver/tests/element_click/events.py
@@ -0,0 +1,33 @@
+from webdriver import Element
+from tests.support.asserts import assert_success
+from tests.support.helpers import filter_dict
+
+def get_events(session):
+    """Return list of mouse events recorded in the fixture."""
+    return session.execute_script("return allEvents.events;") or []
+
+def element_click(session, element):
+    return session.transport.send(
+        "POST", "session/{session_id}/element/{element_id}/click".format(
+            session_id=session.session_id,
+            element_id=element.id))
+
+def test_event_mousemove(session, url):
+    session.url = url("/webdriver/tests/element_click/support/test_click_wdspec.html")
+
+    element = session.find.css('#outer', all=False)
+    response = element_click(session, element)
+    assert_success(response)
+
+    events = get_events(session)
+    assert len(events) == 4
+
+    expected = [
+        {"type": "mousemove", "buttons": 0, "button": 0},
+        {"type": "mousedown", "buttons": 1, "button": 0},
+        {"type": "mouseup", "buttons": 0, "button": 0},
+        {"type": "click", "buttons": 0, "button": 0},
+    ]
+    filtered_events = [filter_dict(e, expected[0]) for e in events]
+
+    assert expected == filtered_events
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/element_click/support/test_click_wdspec.html b/tests/wpt/web-platform-tests/webdriver/tests/element_click/support/test_click_wdspec.html
new file mode 100644
index 00000000000..a9451ec82be
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webdriver/tests/element_click/support/test_click_wdspec.html
@@ -0,0 +1,100 @@
+<!doctype html>
+<meta charset=utf-8>
+<html>
+<head>
+    <title>Test Element Click</title>
+    <style>
+      div { padding:0px; margin: 0px; }
+      #trackPointer { position: fixed; }
+      #resultContainer { width: 600px; height: 60px; }
+      .area { width: 100px; height: 50px; background-color: #ccc; }
+      .block { width: 5px; height: 5px; border: solid 1px red; }
+    </style>
+    <script>
+        "use strict";
+        var els = {};
+        var allEvents = { events: [] };
+        function displayMessage(message) {
+            document.getElementById("events").innerHTML = "<p>" + message + "</p>";
+        }
+
+        function appendMessage(message) {
+            document.getElementById("events").innerHTML += "<p>" + message + "</p>";
+        }
+
+        function recordPointerEvent(event) {
+          if (event.type === "contextmenu") {
+            event.preventDefault();
+          }
+          allEvents.events.push({
+            "type": event.type,
+            "button": event.button,
+            "buttons": event.buttons,
+            "pageX": event.pageX,
+            "pageY": event.pageY,
+            "ctrlKey": event.ctrlKey,
+            "metaKey": event.metaKey,
+            "altKey": event.altKey,
+            "shiftKey": event.shiftKey,
+            "target": event.target.id
+          });
+          appendMessage(event.type + " " +
+              "button: " + event.button + ", " +
+              "pageX: " + event.pageX + ", " +
+              "pageY: " + event.pageY + ", " +
+              "button: " + event.button + ", " +
+              "buttons: " + event.buttons + ", " +
+              "ctrlKey: " + event.ctrlKey + ", " +
+              "altKey: " + event.altKey + ", " +
+              "metaKey: " + event.metaKey + ", " +
+              "shiftKey: " + event.shiftKey + ", " +
+              "target id: " + event.target.id);
+        }
+
+        function recordFirstPointerMove(event) {
+          recordPointerEvent(event);
+          window.removeEventListener("mousemove", recordFirstPointerMove);
+        }
+
+        function resetEvents() {
+          allEvents.events.length = 0;
+          displayMessage("");
+        }
+
+        function move(el, offsetX, offsetY, timeout) {
+          return function(event) {
+            setTimeout(function() {
+              el.style.top = event.clientY + offsetY + "px";
+              el.style.left = event.clientX + offsetX + "px";
+            }, timeout);
+          };
+        }
+
+        document.addEventListener("DOMContentLoaded", function() {
+          var outer = document.getElementById("outer");
+          window.addEventListener("mousemove", recordFirstPointerMove);
+          outer.addEventListener("click", recordPointerEvent);
+          outer.addEventListener("dblclick", recordPointerEvent);
+          outer.addEventListener("mousedown", recordPointerEvent);
+          outer.addEventListener("mouseup", recordPointerEvent);
+          outer.addEventListener("contextmenu", recordPointerEvent);
+
+          //visual cue for mousemove
+          var pointer = document.getElementById("trackPointer");
+          window.addEventListener("mousemove", move(pointer, 15, 15, 30));
+        });
+    </script>
+</head>
+<body>
+  <div id="trackPointer" class="block"></div>
+  <div>
+    <h2>ClickReporter</h2>
+    <div id="outer" class="area">
+    </div>
+  </div>
+  <div id="resultContainer">
+    <h2>Events</h2>
+    <div id="events"></div>
+  </div>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/key_events.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/key_events.py
index c3958015bfd..8dbe024d183 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/key_events.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/key_events.py
@@ -5,7 +5,8 @@ from collections import defaultdict
 import pytest
 
 from tests.perform_actions.support.keys import ALL_EVENTS, Keys, ALTERNATIVE_KEY_NAMES
-from tests.perform_actions.support.refine import filter_dict, get_events, get_keys
+from tests.perform_actions.support.refine import get_events, get_keys
+from tests.support.helpers import filter_dict
 
 
 def test_keyup_only_sends_no_events(session, key_reporter, key_chain):
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer.py
index 9579a57aa72..674d46d7b61 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer.py
@@ -5,8 +5,9 @@ import pytest
 from webdriver.error import NoSuchWindowException
 
 from tests.perform_actions.support.mouse import get_inview_center, get_viewport_rect
-from tests.perform_actions.support.refine import filter_dict, get_events
+from tests.perform_actions.support.refine import get_events
 from tests.support.asserts import assert_move_to_coordinates
+from tests.support.helpers import filter_dict
 from tests.support.sync import Poll
 
 
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_contextmenu.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_contextmenu.py
index fda3f18bbc1..50f684327f2 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_contextmenu.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_contextmenu.py
@@ -1,7 +1,8 @@
 import pytest
 
 from tests.perform_actions.support.keys import Keys
-from tests.perform_actions.support.refine import filter_dict, get_events
+from tests.perform_actions.support.refine import get_events
+from tests.support.helpers import filter_dict
 
 
 @pytest.mark.parametrize("modifier, prop", [
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_dblclick.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_dblclick.py
index 8c89cef5f38..5be635a4d56 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_dblclick.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_dblclick.py
@@ -1,7 +1,8 @@
 import pytest
 
-from tests.perform_actions.support.refine import filter_dict, get_events
+from tests.perform_actions.support.refine import get_events
 from tests.support.asserts import assert_move_to_coordinates
+from tests.support.helpers import filter_dict
 
 
 @pytest.mark.parametrize("click_pause", [0, 200])
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_modifier_click.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_modifier_click.py
index ba81f6d090b..28c4086e0f8 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_modifier_click.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_modifier_click.py
@@ -1,7 +1,8 @@
 import pytest
 
 from tests.perform_actions.support.keys import Keys
-from tests.perform_actions.support.refine import filter_dict, get_events
+from tests.perform_actions.support.refine import get_events
+from tests.support.helpers import filter_dict
 
 
 @pytest.mark.parametrize("modifier, prop", [
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_pause_dblclick.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_pause_dblclick.py
index 85679f3614a..d46178a1d65 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_pause_dblclick.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_pause_dblclick.py
@@ -1,5 +1,6 @@
 from tests.perform_actions.support.mouse import get_inview_center, get_viewport_rect
-from tests.perform_actions.support.refine import filter_dict, get_events
+from tests.perform_actions.support.refine import get_events
+from tests.support.helpers import filter_dict
 
 _DBLCLICK_INTERVAL = 640
 
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_tripleclick.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_tripleclick.py
index 3bf41bab849..8239fc2a606 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_tripleclick.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/pointer_tripleclick.py
@@ -1,5 +1,6 @@
-from tests.perform_actions.support.refine import filter_dict, get_events
+from tests.perform_actions.support.refine import get_events
 from tests.support.asserts import assert_move_to_coordinates
+from tests.support.helpers import filter_dict
 
 lots_of_text = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor "\
                "incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud "\
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/support/refine.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/support/refine.py
index d5d24e934f6..35c962b9ecb 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/support/refine.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/support/refine.py
@@ -27,12 +27,3 @@ def get_keys(input_el):
         return ""
     else:
         return rv
-
-
-def filter_dict(source, d):
-    """Filter `source` dict to only contain same keys as `d` dict.
-
-    :param source: dictionary to filter.
-    :param d: dictionary whose keys determine the filtering.
-    """
-    return {k: source[k] for k in d.keys()}
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/wheel.py b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/wheel.py
index fc84f2f2e01..67734800b19 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/wheel.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/perform_actions/wheel.py
@@ -2,8 +2,9 @@ import pytest
 
 from webdriver.error import NoSuchWindowException
 
-from tests.perform_actions.support.refine import filter_dict, get_events
+from tests.perform_actions.support.refine import get_events
 from tests.support.asserts import assert_move_to_coordinates
+from tests.support.helpers import filter_dict
 
 
 def test_null_response_value(session, wheel_chain):
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/release_actions/sequence.py b/tests/wpt/web-platform-tests/webdriver/tests/release_actions/sequence.py
index 2d816f8094b..75143d85ca6 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/release_actions/sequence.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/release_actions/sequence.py
@@ -1,6 +1,7 @@
 # META: timeout=long
 
-from tests.release_actions.support.refine import filter_dict, get_events, get_keys
+from tests.release_actions.support.refine import get_events, get_keys
+from tests.support.helpers import filter_dict
 
 
 def test_release_no_actions_sends_no_events(session, key_reporter):
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/release_actions/support/refine.py b/tests/wpt/web-platform-tests/webdriver/tests/release_actions/support/refine.py
index 3a6d63e04ce..90f722587c3 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/release_actions/support/refine.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/release_actions/support/refine.py
@@ -22,12 +22,3 @@ def get_keys(input_el):
         return ""
     else:
         return rv
-
-
-def filter_dict(source, d):
-    """Filter `source` dict to only contain same keys as `d` dict.
-
-    :param source: dictionary to filter.
-    :param d: dictionary whose keys determine the filtering.
-    """
-    return {k: source[k] for k in d.keys()}
diff --git a/tests/wpt/web-platform-tests/webdriver/tests/support/helpers.py b/tests/wpt/web-platform-tests/webdriver/tests/support/helpers.py
index a1082caf58c..13607e30481 100644
--- a/tests/wpt/web-platform-tests/webdriver/tests/support/helpers.py
+++ b/tests/wpt/web-platform-tests/webdriver/tests/support/helpers.py
@@ -238,3 +238,11 @@ def available_screen_size(session):
             screen.availHeight - screen.availTop,
         ];
         """))
+
+def filter_dict(source, d):
+    """Filter `source` dict to only contain same keys as `d` dict.
+
+    :param source: dictionary to filter.
+    :param d: dictionary whose keys determine the filtering.
+    """
+    return {k: source[k] for k in d.keys()}