diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
new file mode 100644
index 00000000000..f64b45fea6b
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-002.html]
+  [Hit test float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
similarity index 67%
rename from tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
rename to tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
index f29da48a2a0..4bfb0c2053a 100644
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini
@@ -1,4 +1,4 @@
-[hit-test-floats-003.html]
+[hit-test-floats-004.html]
   [Miss float below something else]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini b/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
deleted file mode 100644
index baa9f1a7541..00000000000
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-005.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-005.html]
-  [Miss clipped float]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-radius-clip-001.html.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-radius-clip-001.html.ini
new file mode 100644
index 00000000000..efae0d0fd46
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-radius-clip-001.html.ini
@@ -0,0 +1,2 @@
+[border-radius-clip-001.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-radius-clip-002.htm.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-radius-clip-002.htm.ini
new file mode 100644
index 00000000000..88dc9deb8aa
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-backgrounds/border-radius-clip-002.htm.ini
@@ -0,0 +1,2 @@
+[border-radius-clip-002.htm]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-029.html.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-029.html.ini
new file mode 100644
index 00000000000..87db5369217
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-029.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-029.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-039.html.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-039.html.ini
new file mode 100644
index 00000000000..2a664c53882
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-039.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-039.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-040.html.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-040.html.ini
new file mode 100644
index 00000000000..4afa188267c
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-040.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-040.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-041.html.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-041.html.ini
new file mode 100644
index 00000000000..8cc89a20010
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-041.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-041.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-042.html.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-042.html.ini
new file mode 100644
index 00000000000..85fe3c5242e
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-042.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-042.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/css-transforms/animation/rotate-composition.html.ini b/tests/wpt/metadata-layout-2020/css/css-transforms/animation/rotate-composition.html.ini
index 2c7d3cbdab8..409c3dcc1fb 100644
--- a/tests/wpt/metadata-layout-2020/css/css-transforms/animation/rotate-composition.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/css-transforms/animation/rotate-composition.html.ini
@@ -1,4 +1,10 @@
 [rotate-composition.html]
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (0.75) should be [0.27 0.53 0.8 90deg\]]
+    expected: FAIL
+  
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [none\] to replace [0 1 0 100deg\] at (0) should be [1 2 3 90deg\]]
+    expected: FAIL
+
   [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [none\] to replace [0 1 0 100deg\] at (-1) should be [0.31 -0.22 0.92 131.66deg\]]
     expected: FAIL
 
@@ -71,9 +77,6 @@
   [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (2) should be [-3.3235e-17 -1 -9.97049e-17 160deg\]]
     expected: FAIL
 
-  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [none\] to replace [0 1 0 100deg\] at (0) should be [1 2 3 90deg\]]
-    expected: FAIL
-
   [Compositing: property <rotate> underlying [100deg\] from add [10deg\] to add [30deg\] at (1) should be [130deg\]]
     expected: FAIL
 
@@ -197,3 +200,126 @@
   [Compositing: property <rotate> underlying [1 0 0 90deg\] from add [0 1 0 180deg\] to replace [0 0 1 90deg\] at (0) should be [-4.32978e-17 -0.707107 -0.707107 180deg\]]
     expected: FAIL
 
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (-1) should be [0.27 0.53 0.8 10deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (0) should be [0.27 0.53 0.8 50deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (0.25) should be [y 25deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (2) should be [y 200deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (-1) should be [0.27 0.53 0.8 540deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (-1) should be [y -100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (-1) should be [0 -1 0 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (2) should be [0.27 0.53 0.8 -360deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (1) should be [0 0.71 0.71 135deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (0.75) should be [y 75deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (0) should be [0.27 0.53 0.8 360deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (0.25) should be [0.27 0.53 0.8 270deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (1) should be [y 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (2) should be [0.27 0.53 0.8 -270deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (0.25) should be [0.54 0.8 0.26 94.83deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (0.75) should be [y 75deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (2) should be [y 200deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (0.25) should be [y 25deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (-1) should be [0.67 -0.06 -0.74 124.97deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (1) should be [0.27 0.53 0.8 0deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (0) should be [0.27 0.53 0.8 270deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (0.75) should be [y 75deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (0.25) should be [0.27 0.53 0.8 60deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (0) should be [y 0deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (2) should be [-0.52 0.29 0.81 208.96deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (0.75) should be [0.27 0.53 0.8 80deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (1) should be [0.27 0.53 0.8 0deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (1) should be [y 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (2) should be [0.27 0.53 0.8 130deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (0.25) should be [0.27 0.53 0.8 202.5deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (0) should be [0.71 0.71 0 90deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (0.25) should be [y 25deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (2) should be [y 200deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (1) should be [y 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (0) should be [0.27 0.53 0.8 360deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (1) should be [0.27 0.53 0.8 90deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (0.75) should be [0.17 0.78 0.61 118.68deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (-1) should be [0 -1 0 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (0) should be [0.27 0.53 0.8 360deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (-1) should be [0.27 0.53 0.8 720deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (0.75) should be [0.27 0.53 0.8 67.5deg\]]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/css-transforms/animation/rotate-transform-equivalent.html.ini b/tests/wpt/metadata-layout-2020/css/css-transforms/animation/rotate-transform-equivalent.html.ini
new file mode 100644
index 00000000000..e3eabc1959d
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-transforms/animation/rotate-transform-equivalent.html.ini
@@ -0,0 +1,2 @@
+[rotate-transform-equivalent.html]
+  expected: TIMEOUT
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 43ed300550c..d0fae781bf5 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
@@ -318,18 +318,18 @@
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;" text/plain]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
+  [<iframe>: combined response Content-Type: */* text/html]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
+  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;" \\" 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 c7413d589dc..d2df9b78483 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
@@ -56,9 +56,3 @@
   [separate text/javascript x/x]
     expected: FAIL
 
-  [separate text/javascript;charset=windows-1252 error text/javascript]
-    expected: FAIL
-
-  [separate text/javascript;charset=windows-1252  text/javascript]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
index 369bf4d4fa4..61682d248e2 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
@@ -11,6 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
-  [Content-Type-Options%3A%20nosniff]
+  [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/gamepad/idlharness.window.js.ini b/tests/wpt/metadata-layout-2020/gamepad/idlharness.https.window.js.ini
similarity index 83%
rename from tests/wpt/metadata/gamepad/idlharness.window.js.ini
rename to tests/wpt/metadata-layout-2020/gamepad/idlharness.https.window.js.ini
index eb2f64fe325..90d01681fe4 100644
--- a/tests/wpt/metadata/gamepad/idlharness.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/gamepad/idlharness.https.window.js.ini
@@ -1,10 +1,10 @@
-[idlharness.window.html]
-  [idlharness]
-    expected: FAIL
-
+[idlharness.https.window.html]
   [GamepadEvent must be primary interface of new GamepadEvent("gamepad")]
     expected: FAIL
-  [Stringification of new GamepadEvent("gamepad")]
-    expected: FAIL
+
   [GamepadEvent interface: new GamepadEvent("gamepad") must inherit property "gamepad" with the proper type]
     expected: FAIL
+
+  [Stringification of new GamepadEvent("gamepad")]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini
new file mode 100644
index 00000000000..87b07c3e670
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_1.html]
+  [Multiple history traversals from the same task]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
new file mode 100644
index 00000000000..735a9a75a2a
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
@@ -0,0 +1,2 @@
+[cross-origin-objects-on-new-window.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/image-maps/image-map-processing-model/hash-name-reference.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/image-maps/image-map-processing-model/hash-name-reference.html.ini
index 09ae27d7480..5c3ac06f42a 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/image-maps/image-map-processing-model/hash-name-reference.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/image-maps/image-map-processing-model/hash-name-reference.html.ini
@@ -171,6 +171,3 @@
   [XHTML img usemap="#hash-id"]
     expected: FAIL
 
-  [HTML (standards) IMG usemap="no-hash-name"]
-    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..92008abe69f 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 +1,4 @@
 [iframe_sandbox_popups_escaping-1.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
index e63fe7c263e..c6f45be1eb2 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-2.html]
-  expected: CRASH
+  expected: TIMEOUT
   [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_escaping-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index 93673c2a0db..338d283eb0e 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
@@ -1,5 +1,4 @@
 [iframe_sandbox_popups_escaping-3.html]
-  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: FAIL
 
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 9eb581fcf1f..0407f0cc2b7 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
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_nonescaping-2.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-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index 7a36937927c..7d2b5231af2 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,4 +1,5 @@
 [iframe_sandbox_popups_nonescaping-3.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/embedded-content/the-img-element/non-active-document.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
index 8cc42056d34..b9d103f521e 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
@@ -2,9 +2,3 @@
   [DOMParser]
     expected: FAIL
 
-  [createHTMLDocument]
-    expected: FAIL
-
-  [<template>]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/scripting-1/the-script-element/async_004.htm.ini b/tests/wpt/metadata-layout-2020/html/semantics/scripting-1/the-script-element/async_004.htm.ini
new file mode 100644
index 00000000000..f314d668a15
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/semantics/scripting-1/the-script-element/async_004.htm.ini
@@ -0,0 +1,4 @@
+[async_004.htm]
+  [async script executes as soon as possible after a download is complete]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini b/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
new file mode 100644
index 00000000000..59a54fe88e4
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
@@ -0,0 +1,4 @@
+[module-delayed.html]
+  [async document.write in a module]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-static-import-delayed.html.ini b/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-static-import-delayed.html.ini
deleted file mode 100644
index fca4d908c89..00000000000
--- a/tests/wpt/metadata-layout-2020/html/webappapis/dynamic-markup-insertion/document-write/module-static-import-delayed.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[module-static-import-delayed.html]
-  [document.write in an imported module]
-    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 450c88bd32b..dbec6f2c2ff 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
@@ -3,6 +3,3 @@
   [The incumbent settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
     expected: TIMEOUT
 
-  [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
-    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/audiobuffersource-duration-loop.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-duration-loop.html.ini
new file mode 100644
index 00000000000..726c36e3e02
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-duration-loop.html.ini
@@ -0,0 +1,4 @@
+[audiobuffersource-duration-loop.html]
+  [X The array length does not match.]
+    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 d4efe051cbe..31ff981307a 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
@@ -221,3 +221,6 @@
   [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\]\t-3.5237828125000000e+4\t9.3139332532882690e-1\t3.5238759518325329e+4\t3.7834455712772411e+4\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 3.5238759518325329e+4 at index of 28696.\n\tMax RelError of 3.7834455712772411e+4 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-1.0115346998129159e-34\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/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html.ini b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html.ini
index b7e13cf7726..f1281b5ae81 100644
--- a/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html.ini
+++ b/tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html.ini
@@ -1,4 +1,5 @@
 [audiocontext-not-fully-active.html]
+  expected: TIMEOUT
   [frame in navigated remote-site frame]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/webmessaging/without-ports/017.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/without-ports/017.html.ini
new file mode 100644
index 00000000000..064cf47545b
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webmessaging/without-ports/017.html.ini
@@ -0,0 +1,5 @@
+[017.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, about:blank]
+    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
new file mode 100644
index 00000000000..80f9a4f15b8
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/workers/constructors/Worker/Worker-constructor.html.ini
@@ -0,0 +1,2 @@
+[Worker-constructor.html]
+  expected: ERROR
diff --git a/tests/wpt/metadata-layout-2020/workers/semantics/run-a-worker/003.html.ini b/tests/wpt/metadata-layout-2020/workers/semantics/run-a-worker/003.html.ini
index dd49aa8e457..c2c57aec558 100644
--- a/tests/wpt/metadata-layout-2020/workers/semantics/run-a-worker/003.html.ini
+++ b/tests/wpt/metadata-layout-2020/workers/semantics/run-a-worker/003.html.ini
@@ -1,5 +1,4 @@
 [003.html]
-  expected: ERROR
   [shared]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index a95a920dcc7..c91c7916457 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -126563,6 +126563,32 @@
        {}
       ]
      ],
+     "border-radius-clip-001.html": [
+      "585b62677f4c439deb077a5ab4aba96559366c72",
+      [
+       null,
+       [
+        [
+         "/css/css-backgrounds/reference/border-radius-clipping-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "border-radius-clip-002.htm": [
+      "c6aa0c6a3e10b639673541d7a16e1c7a43ac8fd2",
+      [
+       null,
+       [
+        [
+         "/css/css-backgrounds/reference/border-radius-clip-002-ref.htm",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "border-radius-clipping-002.html": [
       "eea0ee104fc2610a722f5bbae200c8f6d1ac9823",
       [
@@ -126576,19 +126602,6 @@
        {}
       ]
      ],
-     "border-radius-clipping.html": [
-      "331bc61f20392a7f815014b738a7e01ea92db850",
-      [
-       null,
-       [
-        [
-         "/css/css-backgrounds/reference/border-radius-clipping-ref.html",
-         "=="
-        ]
-       ],
-       {}
-      ]
-     ],
      "border-radius-dynamic-from-no-radius.html": [
       "335548f33ad4bb9d7c42b4b07323c0a398aa28fc",
       [
@@ -126888,6 +126901,71 @@
        {}
       ]
      ],
+     "box-shadow-029.html": [
+      "aa0fbfd6ddfd976fb1254d0f7df8ef2ccad9698c",
+      [
+       null,
+       [
+        [
+         "/css/reference/ref-filled-green-100px-square.xht",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "box-shadow-039.html": [
+      "c3badbc211b7995aa8bd4db165d3667eb61848c9",
+      [
+       null,
+       [
+        [
+         "/css/css-backgrounds/reference/box-shadow-039-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "box-shadow-040.html": [
+      "dea5d5bfaf443ca11c0e1619931a5e929e3e3571",
+      [
+       null,
+       [
+        [
+         "/css/css-backgrounds/reference/box-shadow-040-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "box-shadow-041.html": [
+      "907ca82a6df5ab070b7531a5893b965ddcc6dcfa",
+      [
+       null,
+       [
+        [
+         "/css/css-backgrounds/reference/box-shadow-041-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "box-shadow-042.html": [
+      "ec9212e5b6c9ace7787a5d0321dfa6be17f7ae75",
+      [
+       null,
+       [
+        [
+         "/css/css-backgrounds/reference/box-shadow-042-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "box-shadow-body.html": [
       "88d888a7710c7bdd2831a4908a30108b3a34670a",
       [
@@ -169042,6 +169120,19 @@
        {}
       ]
      ],
+     "placeholder-excluded-properties.html": [
+      "dc5718164ce23a6cb35ba85644e6bc5f2f0dcc69",
+      [
+       null,
+       [
+        [
+         "/css/css-pseudo/reference/placeholder-excluded-properties-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "placeholder-input-number.html": [
       "a557f1091ec29dd90cd4290cf96ac4752b04ff3f",
       [
@@ -191643,6 +191734,19 @@
       ]
      ],
      "animation": {
+      "rotate-transform-equivalent.html": [
+       "7474c79e7e6d974133abd226368ec636f0e4f49c",
+       [
+        null,
+        [
+         [
+          "/css/css-transforms/animation/rotate-transform-equivalent-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "transform-interpolation-matrix.html": [
        "b5f9c3cd3084024756ef95e46e85d0110273cab5",
        [
@@ -299536,8 +299640,12 @@
        "22c5f4dfb8b40fddeb3eeb0af52056dfebf623e1",
        []
       ],
+      "border-radius-clip-002-ref.htm": [
+       "2a68ea3587a23e6eef1dce22511a7f14ffc0d3a3",
+       []
+      ],
       "border-radius-clipping-ref.html": [
-       "344cd01c7a1b339cb7edbd8cd050b2180507abc9",
+       "2aeef90eb05afc930b3836c50d97e2e3484d95db",
        []
       ],
       "border-radius-horizontal-value-is-zero-ref.html": [
@@ -299556,6 +299664,22 @@
        "81a5cbf6b8e06f6435bc133287f128ed6af8ed62",
        []
       ],
+      "box-shadow-039-ref.html": [
+       "6f364d09a2b2a33a085af99c9ea92c83e1d07a39",
+       []
+      ],
+      "box-shadow-040-ref.html": [
+       "14159cfcdf5d06021d98e04d0ee6367d16cdeda7",
+       []
+      ],
+      "box-shadow-041-ref.html": [
+       "8b93bbdf112e09c3a5e4242b8905d01afda6297a",
+       []
+      ],
+      "box-shadow-042-ref.html": [
+       "ccc209a02d281b9aa05b590ca9292328e2f60f12",
+       []
+      ],
       "box-shadow-body-ref.html": [
        "d2ae1ebd84b7ed80bcee9e0b457a41c0b8f17cf9",
        []
@@ -314388,6 +314512,10 @@
        "17d69f306d77411f2ef0a7dab682b119c5b59e50",
        []
       ],
+      "placeholder-excluded-properties-ref.html": [
+       "0e573cb3d6cbac837c9e10552e360aa713fee60b",
+       []
+      ],
       "selection-contenteditable-011-ref.html": [
        "0677a4b6b39f26aa4b3acc7480240b9d061e4929",
        []
@@ -319604,6 +319732,10 @@
       []
      ],
      "animation": {
+      "rotate-transform-equivalent-ref.html": [
+       "e95e62be888216d9bcd2487c54c1da602973de75",
+       []
+      ],
       "support": {
        "transform-interpolation-reftests.js": [
         "0094b8a2c7590151e551aa1fde5be67e82779b6a",
@@ -326764,7 +326896,7 @@
       []
      ],
      "interpolation-testcommon.js": [
-      "16a1c0e7f7fb83f52b3b5d55fda4d49462fa9fe6",
+      "999a1e0542858689f66c2afac50f43fd742476f8",
       []
      ],
      "numeric-testcommon.js": [
@@ -348675,7 +348807,7 @@
      []
     ],
     "gamepad.idl": [
-     "c8a2fc590a84937912f873a15ef666ab55013c77",
+     "e8252e2a85b3867fe0390706449ea3269762b7d7",
      []
     ],
     "generic-sensor.idl": [
@@ -366550,7 +366682,7 @@
         []
        ],
        "firefox_android.py": [
-        "bea0d9f4ee33ab051b00cba5b8a4afc017c37501",
+        "b219079de3df793ba5c74de8706d4c9ad0526194",
         []
        ],
        "ie.py": [
@@ -408340,6 +408472,20 @@
        {}
       ]
      ],
+     "getclientrects-000.html": [
+      "be11ba99493c12d75e8dd42ed55ca998bbe66001",
+      [
+       null,
+       {}
+      ]
+     ],
+     "getclientrects-001.html": [
+      "630e5ee0f77166a14a911dbf11c68ec41aeabc68",
+      [
+       null,
+       {}
+      ]
+     ],
      "going-out-of-flow-after-spanner.html": [
       "2fe0e42a7522647b7eca4db1e6f710a9975faaa4",
       [
@@ -415648,7 +415794,7 @@
        ]
       ],
       "rotate-composition.html": [
-       "fa0118d50f457b3021a28a7e12a21c96c1c5a23c",
+       "f9a4527342ffb44cf389cf9ab5ded0e59492b9e3",
        [
         null,
         {}
@@ -452724,10 +452870,10 @@
       }
      ]
     ],
-    "idlharness.window.js": [
+    "idlharness.https.window.js": [
      "0bbb0b3c701515743c24ca8ca67a96b5c61fa3cc",
      [
-      "gamepad/idlharness.window.html",
+      "gamepad/idlharness.https.window.html",
       {
        "script_metadata": [
         [
@@ -496872,6 +497018,13 @@
     ]
    },
    "mediacapture-fromelement": {
+    "HTMLCanvasElement-getImageData-noframe.html": [
+     "48d445f897d7f80b013204f78f52670e31da1c1c",
+     [
+      null,
+      {}
+     ]
+    ],
     "capture.html": [
      "74858737f13f818ed4f52d71221580957302676f",
      [
@@ -503446,6 +503599,13 @@
        {}
       ]
      ],
+     "fcp-ensure-update-the-rendering-step.html": [
+      "700707de33a6ada29220d3c914000d1868edd36e",
+      [
+       null,
+       {}
+      ]
+     ],
      "fcp-gradient.html": [
       "c1e147472ff076cb2aa72b7dfc45cd6d3a00ed34",
       [
@@ -519182,7 +519342,7 @@
       ]
      ],
      "scroll-timeline-cssom.tentative.html": [
-      "d9e4cc08cbe1649ed8c60697f28fd43b86053584",
+      "1e6f581992f239f863e6a0afea27654d142ee291",
       [
        null,
        {}
@@ -540866,6 +541026,13 @@
         {}
        ]
       ],
+      "audiobuffersource-duration-loop.html": [
+       "5fb8536b137ea7c18ff6d77bc29855e772e669f6",
+       [
+        null,
+        {}
+       ]
+      ],
       "audiobuffersource-ended.html": [
        "b9922f61ef399bf558a2f6d3c61154b9f14a512f",
        [
@@ -575699,20 +575866,6 @@
        {}
       ]
      ],
-     "border-radius-clip-001.htm": [
-      "bf754be90ff0cf3ee2d65e68c758d88686506787",
-      [
-       null,
-       {}
-      ]
-     ],
-     "border-radius-clip-002.htm": [
-      "c8eba29fe9d34d3b5a6b34b9745a03a1c639aa18",
-      [
-       null,
-       {}
-      ]
-     ],
      "border-radius-content-edge-001.htm": [
       "72cd3a6f2afe26b771fd92d7fe5c568a36b68928",
       [
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
new file mode 100644
index 00000000000..f64b45fea6b
--- /dev/null
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
@@ -0,0 +1,4 @@
+[hit-test-floats-002.html]
+  [Hit test float]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
similarity index 67%
rename from tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
rename to tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
index f29da48a2a0..4bfb0c2053a 100644
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
+++ b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini
@@ -1,4 +1,4 @@
-[hit-test-floats-003.html]
+[hit-test-floats-004.html]
   [Miss float below something else]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
deleted file mode 100644
index baa9f1a7541..00000000000
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-005.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-005.html]
-  [Miss clipped float]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/css-backgrounds/border-radius-clip-001.html.ini b/tests/wpt/metadata/css/css-backgrounds/border-radius-clip-001.html.ini
new file mode 100644
index 00000000000..efae0d0fd46
--- /dev/null
+++ b/tests/wpt/metadata/css/css-backgrounds/border-radius-clip-001.html.ini
@@ -0,0 +1,2 @@
+[border-radius-clip-001.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/border-radius-clip-002.htm.ini b/tests/wpt/metadata/css/css-backgrounds/border-radius-clip-002.htm.ini
new file mode 100644
index 00000000000..88dc9deb8aa
--- /dev/null
+++ b/tests/wpt/metadata/css/css-backgrounds/border-radius-clip-002.htm.ini
@@ -0,0 +1,2 @@
+[border-radius-clip-002.htm]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/border-radius-clipping.html.ini b/tests/wpt/metadata/css/css-backgrounds/border-radius-clipping.html.ini
deleted file mode 100644
index 6d1b4c3d9cf..00000000000
--- a/tests/wpt/metadata/css/css-backgrounds/border-radius-clipping.html.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[border-radius-clipping.html]
-  type: reftest
-  disabled: https://github.com/servo/webrender/issues/1256
diff --git a/tests/wpt/metadata/css/css-backgrounds/box-shadow-041.html.ini b/tests/wpt/metadata/css/css-backgrounds/box-shadow-041.html.ini
new file mode 100644
index 00000000000..8cc89a20010
--- /dev/null
+++ b/tests/wpt/metadata/css/css-backgrounds/box-shadow-041.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-041.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-backgrounds/box-shadow-042.html.ini b/tests/wpt/metadata/css/css-backgrounds/box-shadow-042.html.ini
new file mode 100644
index 00000000000..85fe3c5242e
--- /dev/null
+++ b/tests/wpt/metadata/css/css-backgrounds/box-shadow-042.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-042.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/css-transforms/animation/rotate-composition.html.ini b/tests/wpt/metadata/css/css-transforms/animation/rotate-composition.html.ini
index 4840f4b1bca..365b267d291 100644
--- a/tests/wpt/metadata/css/css-transforms/animation/rotate-composition.html.ini
+++ b/tests/wpt/metadata/css/css-transforms/animation/rotate-composition.html.ini
@@ -185,3 +185,126 @@
   [Compositing: property <rotate> underlying [1 0 0 90deg\] from add [0 1 0 180deg\] to replace [0 0 1 90deg\] at (0) should be [-4.32978e-17 -0.707107 -0.707107 180deg\]]
     expected: FAIL
 
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (-1) should be [0.27 0.53 0.8 10deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (0) should be [0.27 0.53 0.8 50deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (0.25) should be [y 25deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (2) should be [y 200deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (-1) should be [0.27 0.53 0.8 540deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (-1) should be [y -100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (-1) should be [0 -1 0 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (2) should be [0.27 0.53 0.8 -360deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (1) should be [0 0.71 0.71 135deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (0.75) should be [y 75deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (0) should be [0.27 0.53 0.8 360deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (0.25) should be [0.27 0.53 0.8 270deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (1) should be [y 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (2) should be [0.27 0.53 0.8 -270deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (0.25) should be [0.54 0.8 0.26 94.83deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (0.75) should be [y 75deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (2) should be [y 200deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (0.25) should be [y 25deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (-1) should be [0.67 -0.06 -0.74 124.97deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (1) should be [0.27 0.53 0.8 0deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (0) should be [0.27 0.53 0.8 270deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (0.75) should be [y 75deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (0.25) should be [0.27 0.53 0.8 60deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (0) should be [y 0deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (2) should be [-0.52 0.29 0.81 208.96deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (0.75) should be [0.27 0.53 0.8 80deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (1) should be [0.27 0.53 0.8 0deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (1) should be [y 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (2) should be [0.27 0.53 0.8 130deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (0.25) should be [0.27 0.53 0.8 202.5deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (0) should be [0.71 0.71 0 90deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (0.25) should be [y 25deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [none\] to replace [0 1 0 100deg\] at (2) should be [y 200deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (1) should be [y 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (0) should be [0.27 0.53 0.8 360deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 40deg\] from add [2 4 6 10deg\] to add [3 6 9 50deg\] at (1) should be [0.27 0.53 0.8 90deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 0 0 0deg\] from add [1 1 0 90deg\] to replace [0 1 1 135deg\] at (0.75) should be [0.17 0.78 0.61 118.68deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 270deg\] from add [1 2 3 90deg\] to replace [0 1 0 100deg\] at (-1) should be [0 -1 0 100deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [0 1 0 100deg\] at (0) should be [0.27 0.53 0.8 360deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [1 2 3 90deg\] from add [2 4 6 270deg\] to replace [none\] at (-1) should be [0.27 0.53 0.8 720deg\]]
+    expected: FAIL
+
+  [Compositing: property <rotate> underlying [none\] from add [2 4 6 270deg\] to replace [none\] at (0.75) should be [0.27 0.53 0.8 67.5deg\]]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/css-transforms/animation/rotate-transform-equivalent.html.ini b/tests/wpt/metadata/css/css-transforms/animation/rotate-transform-equivalent.html.ini
new file mode 100644
index 00000000000..e3eabc1959d
--- /dev/null
+++ b/tests/wpt/metadata/css/css-transforms/animation/rotate-transform-equivalent.html.ini
@@ -0,0 +1,2 @@
+[rotate-transform-equivalent.html]
+  expected: TIMEOUT
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 d689fc94749..c98550f9258 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -318,18 +318,18 @@
   [<iframe>: separate response Content-Type: text/html;" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;" text/plain]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
-    expected: FAIL
-
   [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
+  [<iframe>: combined response Content-Type: */* text/html]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
+  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;x=" text/plain]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;" \\" 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 c7413d589dc..d2df9b78483 100644
--- a/tests/wpt/metadata/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
@@ -56,9 +56,3 @@
   [separate text/javascript x/x]
     expected: FAIL
 
-  [separate text/javascript;charset=windows-1252 error text/javascript]
-    expected: FAIL
-
-  [separate text/javascript;charset=windows-1252  text/javascript]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index 369bf4d4fa4..61682d248e2 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,6 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
-  [Content-Type-Options%3A%20nosniff]
+  [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/gamepad/idlharness.https.window.js.ini b/tests/wpt/metadata/gamepad/idlharness.https.window.js.ini
new file mode 100644
index 00000000000..90d01681fe4
--- /dev/null
+++ b/tests/wpt/metadata/gamepad/idlharness.https.window.js.ini
@@ -0,0 +1,10 @@
+[idlharness.https.window.html]
+  [GamepadEvent must be primary interface of new GamepadEvent("gamepad")]
+    expected: FAIL
+
+  [GamepadEvent interface: new GamepadEvent("gamepad") must inherit property "gamepad" with the proper type]
+    expected: FAIL
+
+  [Stringification of new GamepadEvent("gamepad")]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini
new file mode 100644
index 00000000000..87b07c3e670
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_1.html]
+  [Multiple history traversals from the same task]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini b/tests/wpt/metadata/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
new file mode 100644
index 00000000000..735a9a75a2a
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini
@@ -0,0 +1,2 @@
+[cross-origin-objects-on-new-window.html]
+  expected: TIMEOUT
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/image-maps/image-map-processing-model/hash-name-reference.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/image-maps/image-map-processing-model/hash-name-reference.html.ini
index 98163335e40..1de3f8d68b2 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/image-maps/image-map-processing-model/hash-name-reference.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/image-maps/image-map-processing-model/hash-name-reference.html.ini
@@ -172,6 +172,3 @@
   [XHTML img usemap="http://example.org/#garbage-before-hash-id"]
     expected: FAIL
 
-  [HTML (standards) IMG usemap="no-hash-name"]
-    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..f42f518d257 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 +1,5 @@
 [iframe_sandbox_popups_escaping-1.html]
   type: testharness
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
-    expected: TIMEOUT
+    expected: FAIL
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
index e63fe7c263e..c6f45be1eb2 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-2.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-2.html]
-  expected: CRASH
+  expected: TIMEOUT
   [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_escaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index cb0211f1d21..f6a7aca3306 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
@@ -1,6 +1,5 @@
 [iframe_sandbox_popups_escaping-3.html]
   type: testharness
-  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: FAIL
 
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 45d8be1c898..d43f38b40cd 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
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_nonescaping-2.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-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index dc856a3d5a3..2568040e6e5 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
@@ -1,5 +1,6 @@
 [iframe_sandbox_popups_nonescaping-3.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/embedded-content/the-img-element/non-active-document.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
index 8cc42056d34..b9d103f521e 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-img-element/non-active-document.html.ini
@@ -2,9 +2,3 @@
   [DOMParser]
     expected: FAIL
 
-  [createHTMLDocument]
-    expected: FAIL
-
-  [<template>]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/semantics/scripting-1/the-script-element/async_004.htm.ini b/tests/wpt/metadata/html/semantics/scripting-1/the-script-element/async_004.htm.ini
new file mode 100644
index 00000000000..f314d668a15
--- /dev/null
+++ b/tests/wpt/metadata/html/semantics/scripting-1/the-script-element/async_004.htm.ini
@@ -0,0 +1,4 @@
+[async_004.htm]
+  [async script executes as soon as possible after a download is complete]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
new file mode 100644
index 00000000000..59a54fe88e4
--- /dev/null
+++ b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-delayed.html.ini
@@ -0,0 +1,4 @@
+[module-delayed.html]
+  [async document.write in a module]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-static-import-delayed.html.ini b/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-static-import-delayed.html.ini
deleted file mode 100644
index fca4d908c89..00000000000
--- a/tests/wpt/metadata/html/webappapis/dynamic-markup-insertion/document-write/module-static-import-delayed.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[module-static-import-delayed.html]
-  [document.write in an imported module]
-    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 01f7b72cbe7..0cef5158fae 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
@@ -4,6 +4,3 @@
   [The incumbent settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
     expected: TIMEOUT
 
-  [The entry settings object while executing the compiled callback via Web IDL's invoke must be that of the node document]
-    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/audiobuffersource-duration-loop.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-duration-loop.html.ini
new file mode 100644
index 00000000000..726c36e3e02
--- /dev/null
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-duration-loop.html.ini
@@ -0,0 +1,4 @@
+[audiobuffersource-duration-loop.html]
+  [X The array length does not match.]
+    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 0128288381d..89dc1e1d0fb 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
@@ -449,3 +449,6 @@
   [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\]\t-3.5237828125000000e+4\t9.3139332532882690e-1\t3.5238759518325329e+4\t3.7834455712772411e+4\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 3.5238759518325329e+4 at index of 28696.\n\tMax RelError of 3.7834455712772411e+4 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-1.0115346998129159e-34\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/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html.ini b/tests/wpt/metadata/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html.ini
index b7e13cf7726..f1281b5ae81 100644
--- a/tests/wpt/metadata/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html.ini
+++ b/tests/wpt/metadata/webaudio/the-audio-api/the-audiocontext-interface/audiocontext-not-fully-active.html.ini
@@ -1,4 +1,5 @@
 [audiocontext-not-fully-active.html]
+  expected: TIMEOUT
   [frame in navigated remote-site frame]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/webmessaging/without-ports/017.html.ini b/tests/wpt/metadata/webmessaging/without-ports/017.html.ini
new file mode 100644
index 00000000000..064cf47545b
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/without-ports/017.html.ini
@@ -0,0 +1,5 @@
+[017.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, about:blank]
+    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
new file mode 100644
index 00000000000..80f9a4f15b8
--- /dev/null
+++ b/tests/wpt/metadata/workers/constructors/Worker/Worker-constructor.html.ini
@@ -0,0 +1,2 @@
+[Worker-constructor.html]
+  expected: ERROR
diff --git a/tests/wpt/metadata/workers/semantics/run-a-worker/003.html.ini b/tests/wpt/metadata/workers/semantics/run-a-worker/003.html.ini
index 49f489d2a1c..d6e39444229 100644
--- a/tests/wpt/metadata/workers/semantics/run-a-worker/003.html.ini
+++ b/tests/wpt/metadata/workers/semantics/run-a-worker/003.html.ini
@@ -1,6 +1,5 @@
 [003.html]
   type: testharness
-  expected: ERROR
   [shared]
     expected: FAIL
 
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.htm b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.htm
deleted file mode 100644
index bf754be90ff..00000000000
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.htm
+++ /dev/null
@@ -1,34 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml">
-    <head>
-        <title>CSS Test: 'Overflow' clips to the curve of the rounded corner.</title>
-        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
-        <link rel="help" href="http://www.w3.org/TR/css3-background/#border-radius" />
-        <meta name="flags" content="" />
-        <meta name="assert" content="'Overflow' clips to the curve of the rounded corner." />
-        <style type="text/css">
-            div
-            {
-                border: solid black;
-                border-radius: 40px;
-                height: 1in;
-                width: 2in;
-                overflow: hidden;
-            }
-        </style>
-    </head>
-    <body>
-        <p>Test passes if the 'Filler Text' below is clipped to the curve of the rounded corners.</p>
-        <div>
-            Filler Text. Filler Text.
-            Filler Text. Filler Text.
-            Filler Text. Filler Text.
-            Filler Text. Filler Text.
-            Filler Text. Filler Text.
-            Filler Text. Filler Text.
-            Filler Text. Filler Text.
-            Filler Text. Filler Text.
-            Filler Text. Filler Text.
-        </div>
-    </body>
-</html>
\ No newline at end of file
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.html b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.html
new file mode 100644
index 00000000000..585b62677f4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-001.html
@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Backgrounds and Borders Test: 'border-radius' and corner-clipping of content</title>
+
+  <link rel="author" title="zhouli" href="mailto:liz@oupeng.com">
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
+  <link rel="help" href="http://www.w3.org/TR/css-background-3/#corner-clipping">
+  <link rel="match" href="reference/border-radius-clipping-ref.html">
+
+  <meta name="assert" content="Test passes if a box with border-radius that clips its content to a box edge clips to the border-radius curve in the corners.">
+
+  <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+  <style>
+  body > div { float: left; }
+  .round
+    {
+      border: transparent double 20px;
+      border-radius: 50%;
+      padding: 10px;
+    }
+  #bg, #txt, #img-contain
+    {
+      overflow: hidden;
+      width: 80px;
+    }
+  #bg > div
+    {
+      margin: -10px;
+      background-image: url("support/100x100-green-with-red-corners.png");
+      height: 100px;
+      width: 100px;
+    }
+  #txt > div
+    {
+      margin: -10px;
+      color: green;
+      font: 50px/1 Ahem;
+    }
+
+  img
+    {
+      display: block;
+    }
+  #img-contain > img
+    {
+      margin: -10px;
+    }
+  #img-self
+    {
+      margin: -10px;
+    }
+  </style>
+
+  <p>Test passes if there are four filled green circles and <strong>no red</strong>.
+
+  <div id="bg" class="round">
+    <div></div>
+  </div>
+
+  <div id="txt" class="round">
+    <div>XX<br>XX</div>
+  </div>
+
+  <div id="img-contain" class="round">
+    <img src="support/swatch-green.png" width=100 height=100>
+  </div>
+
+  <div>
+    <img id="img-self" class="round" src="support/swatch-green.png" width=100>
+  </div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-002.htm b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-002.htm
index c8eba29fe9d..c6aa0c6a3e1 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-002.htm
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clip-002.htm
@@ -1,36 +1,58 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml">
+<!DOCTYPE html>
+<html>
     <head>
         <title>CSS Test: Background is clipped to the curve of the content-box when 'background-clip: content-box'</title>
-        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
-        <link rel="help" href="http://www.w3.org/TR/css3-background/#border-radius" />
-        <meta name="flags" content="" />
-        <meta name="assert" content="Background is clipped to the curve of the content-box when 'background-clip: content-box'" />
+        <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
+        <link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
+        <link rel="match" href="reference/border-radius-clip-002-ref.htm">
+        <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#corner-clipping">
+        <meta name="assert" content="Background is clipped to the curve of the content-box when 'background-clip: content-box'">
         <style type="text/css">
-            #test
+            #test-base
             {
-                width: 100px;
-                height: 100px;
-                border: 10px solid black;
-                padding: 10px;
+                width: 98px;
+                height: 98px;
+                border: 10px double black;
+                padding: 11px;
                 border-radius: 40px;
-                background: red;
+                background: red url(support/swatch-red.png);
                 background-clip: content-box;
             }
-            #reference
+            #reference-cover
             {
-                margin-top: -120px;
-                margin-left: 20px;
+                margin: -120px 0 40px 20px;
                 width: 100px;
                 height: 100px;
                 border-radius: 20px;
                 background-color: black;
             }
+
+            #reference-base
+            {
+                width: 98px;
+                height: 98px;
+                margin-left: 20px;
+                border-radius: 20px;
+                background: red url(support/swatch-red.png);
+            }
+            #test-cover
+            {
+                margin-top: -120px;
+                border: 10px double black;
+                padding: 10px;
+                width: 100px;
+                height: 100px;
+                border-radius: 40px;
+                background-color: black;
+                background-clip: content-box;
+            }
         </style>
     </head>
     <body>
         <p>Test passes if there is no red visible on the page.</p>
-        <div id="test"></div>
-        <div id="reference"></div>
+        <div id="test-base"></div>
+        <div id="reference-cover"></div>
+        <div id="reference-base"></div>
+        <div id="test-cover"></div>
     </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clipping.html b/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clipping.html
deleted file mode 100644
index 331bc61f203..00000000000
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/border-radius-clipping.html
+++ /dev/null
@@ -1,37 +0,0 @@
-<!DOCTYPE html>
-
-  <meta charset="UTF-8">
-
-  <title>CSS Backgrounds and Borders Test: 'border-radius' and corner-clipping of content elements</title>
-
-  <link rel="author" title="zhouli" href="mailto:liz@oupeng.com">
-  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
-  <link rel="help" href="http://www.w3.org/TR/css3-background/#corner-clipping">
-  <link rel="match" href="reference/border-radius-clipping-ref.html">
-
-  <meta content="" name="flag">
-  <meta name="assert" content="When set with 'overflow: hidden', an outer container must clip background area of its child element at its corners. In this test, the outer container has a 'border-radius' declaration which implies that the clipping must occur at its curves.">
-
-  <style>
-  div#parent
-    {
-      border: transparent solid 20px;
-      border-radius: 50%;
-      overflow: hidden;
-      width: 100px;
-    }
-
-  div#son
-    {
-      background-color: red;
-      background-image: url("support/100x100-green-with-red-corners.png");
-      height: 100px;
-      width: 100px;
-    }
-  </style>
-
-  <p>Test passes if there is a filled green circle and <strong>no red</strong>.
-
-  <div id="parent">
-    <div id="son"></div>
-  </div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-029.html b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-029.html
new file mode 100644
index 00000000000..aa0fbfd6ddf
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-029.html
@@ -0,0 +1,63 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+
+  <title>CSS Backgrounds Test: box-shadow and empty box (edge)</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-box-shadow">
+  <link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+
+  <meta content="" name="flags">
+  <meta content="This test checks that an empty box can have a box shadow." name="assert">
+
+  <!--
+
+  <shadow> = inset? && <length>{2,4} && <color>?
+
+  A comma-separated pair of numbers in curly braces {A,B}
+  indicates that the preceding type, word, or group occurs
+  at least A and at most B times.
+
+  A question mark (?) indicates that the preceding type,
+  word, or group is optional (occurs zero or one times).
+
+  The components of each <shadow> are interpreted as follows:
+
+  1st <length>
+    Specifies the horizontal offset
+    of the shadow. A positive value draws a shadow that is offset to the right of the box, a negative length to the left.
+  2nd <length>
+    Specifies the vertical offset
+    of the shadow. A positive value offsets the shadow down, a negative one up.
+  4th <length>
+    Specifies the spread distance. Positive values cause the shadow to expand in all directions by the specified radius. Negative values cause the shadow to contract.
+
+  -->
+
+  <style>
+  div#green-overlapping-test
+    {
+      background-color: red;
+      height: 0px;
+      width: 0px;
+
+      box-shadow: green 50px 50px 0px 50px;
+    }
+
+  div#red-overlapped-reference
+    {
+      background-color: red;
+      height: 100px;
+      position: relative;
+      width: 100px;
+      z-index: -1;
+    }
+  </style>
+
+  <p>Test passes if there is a filled green square and <strong>no red</strong>.
+
+  <div id="green-overlapping-test"></div>
+
+  <div id="red-overlapped-reference"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-039.html b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-039.html
new file mode 100644
index 00000000000..c3badbc211b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-039.html
@@ -0,0 +1,78 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Backgrounds Test: box-shadow in 3 sub-tests with not inset and Npx 0px</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-box-shadow">
+  <link rel="match" href="reference/box-shadow-039-ref.html">
+
+  <meta content="" name="flags">
+
+  <!--
+
+  <shadow> = inset? && <length>{2,4} && <color>?
+
+  A comma-separated pair of numbers in curly braces {A,B}
+  indicates that the preceding type, word, or group occurs
+  at least A and at most B times.
+
+  A question mark (?) indicates that the preceding type,
+  word, or group is optional (occurs zero or one times).
+
+  The components of each <shadow> are interpreted as follows:
+
+  1st <length>
+    Specifies the horizontal offset
+    of the shadow. A positive value draws a shadow that is offset to
+    the right of the box, a negative length to the left.
+
+  2nd <length>
+    Specifies the vertical offset
+    of the shadow. A positive value offsets the shadow down, a negative one up.
+
+  4th <length>
+    Specifies the spread distance.
+    Positive values cause the shadow to expand in all directions
+    by the specified radius.
+    Negative values cause the shadow to contract.
+
+  -->
+
+  <style>
+  div
+    {
+      background-color: rgba(0, 0, 255, 0.5);  /* semi-transparent blue */
+      border: black double 18px;
+      height: 36px;
+      margin-bottom: 36px;
+      width: 36px;
+    }
+
+  /* Npx 0px, zero spread, not-inset */
+  div#sub-test1
+    {
+      box-shadow: 36px 0px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+
+  /* Npx 0px, positive spread, not-inset */
+  div#sub-test2
+    {
+      box-shadow: 36px 0px 0px 18px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+
+  /* Npx 0px, negative spread, not-inset */
+  div#sub-test3
+    {
+      box-shadow: 36px 0px 0px -18px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+  </style>
+
+  <h3>Not inset and Npx 0px: 36px 0px</h3>
+
+  <div id="sub-test1"></div>
+
+  <div id="sub-test2"></div>
+
+  <div id="sub-test3"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-040.html b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-040.html
new file mode 100644
index 00000000000..dea5d5bfaf4
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-040.html
@@ -0,0 +1,78 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Backgrounds Test: box-shadow in 3 sub-tests with not inset and Npx Mpx</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-box-shadow">
+  <link rel="match" href="reference/box-shadow-040-ref.html">
+
+  <meta content="" name="flags">
+
+  <!--
+
+  <shadow> = inset? && <length>{2,4} && <color>?
+
+  A comma-separated pair of numbers in curly braces {A,B}
+  indicates that the preceding type, word, or group occurs
+  at least A and at most B times.
+
+  A question mark (?) indicates that the preceding type,
+  word, or group is optional (occurs zero or one times).
+
+  The components of each <shadow> are interpreted as follows:
+
+  1st <length>
+    Specifies the horizontal offset
+    of the shadow. A positive value draws a shadow that is offset to
+    the right of the box, a negative length to the left.
+
+  2nd <length>
+    Specifies the vertical offset
+    of the shadow. A positive value offsets the shadow down, a negative one up.
+
+  4th <length>
+    Specifies the spread distance.
+    Positive values cause the shadow to expand in all directions
+    by the specified radius.
+    Negative values cause the shadow to contract.
+
+  -->
+
+  <style>
+  div
+    {
+      background-color: rgba(0, 0, 255, 0.5);  /* semi-transparent blue */
+      border: black double 18px;
+      height: 36px;
+      margin-bottom: 54px;
+      width: 36px;
+    }
+
+  /* Npx Mpx, zero spread, not-inset */
+  div#sub-test4
+    {
+      box-shadow: 36px 18px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+
+  /* Npx Mpx, positive spread, not-inset */
+  div#sub-test5
+    {
+      box-shadow: 36px 18px 0px 18px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+
+  /* Npx Mpx, negative spread, not-inset */
+  div#sub-test6
+    {
+      box-shadow: 36px 18px 0px -18px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+  </style>
+
+  <h3>Not inset and Npx Mpx: 36px 18px</h3>
+
+  <div id="sub-test4"></div>
+
+  <div id="sub-test5"></div>
+
+  <div id="sub-test6"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-041.html b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-041.html
new file mode 100644
index 00000000000..907ca82a6df
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-041.html
@@ -0,0 +1,78 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Backgrounds Test: box-shadow in 3 sub-tests with inset and Npx 0px</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-box-shadow">
+  <link rel="match" href="reference/box-shadow-041-ref.html">
+
+  <meta content="" name="flags">
+
+  <!--
+
+  <shadow> = inset? && <length>{2,4} && <color>?
+
+  A comma-separated pair of numbers in curly braces {A,B}
+  indicates that the preceding type, word, or group occurs
+  at least A and at most B times.
+
+  A question mark (?) indicates that the preceding type,
+  word, or group is optional (occurs zero or one times).
+
+  The components of each <shadow> are interpreted as follows:
+
+  1st <length>
+    Specifies the horizontal offset
+    of the shadow. A positive value draws a shadow that is offset to
+    the right of the box, a negative length to the left.
+
+  2nd <length>
+    Specifies the vertical offset
+    of the shadow. A positive value offsets the shadow down, a negative one up.
+
+  4th <length>
+    Specifies the spread distance.
+    Positive values cause the shadow to expand in all directions
+    by the specified radius.
+    Negative values cause the shadow to contract.
+
+  -->
+
+  <style>
+  div
+    {
+      background-color: rgba(0, 0, 255, 0.5);  /* semi-transparent blue */
+      border: black double 18px;
+      height: 36px;
+      margin-bottom: 36px;
+      width: 36px;
+    }
+
+  /* inset, Npx 0px, zero spread */
+  div#sub-test7
+    {
+      box-shadow: inset 18px 0px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+
+  /* inset, Npx 0px, positive spread */
+  div#sub-test8
+    {
+      box-shadow: inset 18px 0px 0px 12px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+
+  /* inset, Npx 0px, negative spread */
+  div#sub-test9
+    {
+      box-shadow: inset 18px 0px 0px -6px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+  </style>
+
+  <h3>With inset and Npx 0px: 18px 0px</h3>
+
+  <div id="sub-test7"></div>
+
+  <div id="sub-test8"></div>
+
+  <div id="sub-test9"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-042.html b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-042.html
new file mode 100644
index 00000000000..ec9212e5b6c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-042.html
@@ -0,0 +1,78 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Backgrounds Test: box-shadow in 3 sub-tests with inset and Npx Mpx</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+  <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#the-box-shadow">
+  <link rel="match" href="reference/box-shadow-042-ref.html">
+
+  <meta content="" name="flags">
+
+  <!--
+
+  <shadow> = inset? && <length>{2,4} && <color>?
+
+  A comma-separated pair of numbers in curly braces {A,B}
+  indicates that the preceding type, word, or group occurs
+  at least A and at most B times.
+
+  A question mark (?) indicates that the preceding type,
+  word, or group is optional (occurs zero or one times).
+
+  The components of each <shadow> are interpreted as follows:
+
+  1st <length>
+    Specifies the horizontal offset
+    of the shadow. A positive value draws a shadow that is offset to
+    the right of the box, a negative length to the left.
+
+  2nd <length>
+    Specifies the vertical offset
+    of the shadow. A positive value offsets the shadow down, a negative one up.
+
+  4th <length>
+    Specifies the spread distance.
+    Positive values cause the shadow to expand in all directions
+    by the specified radius.
+    Negative values cause the shadow to contract.
+
+  -->
+
+  <style>
+  div
+    {
+      background-color: rgba(0, 0, 255, 0.5);  /* semi-transparent blue */
+      border: black double 18px;
+      height: 36px;
+      margin-bottom: 36px;
+      width: 36px;
+    }
+
+  /* inset, Npx Mpx, zero spread */
+  div#sub-test10
+    {
+      box-shadow: inset 18px 12px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+
+  /* inset, Npx Mpx, positive spread */
+  div#sub-test11
+    {
+      box-shadow: inset 18px 12px 0px 12px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+
+  /* inset, Npx Mpx, negative spread */
+  div#sub-test12
+    {
+      box-shadow: inset 18px 12px 0px -6px rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+    }
+  </style>
+
+  <h3>With inset and Npx Mpx: 18px 12px</h3>
+
+  <div id="sub-test10"></div>
+
+  <div id="sub-test11"></div>
+
+  <div id="sub-test12"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/border-radius-clip-002-ref.htm b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/border-radius-clip-002-ref.htm
new file mode 100644
index 00000000000..2a68ea3587a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/border-radius-clip-002-ref.htm
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>CSS Test: Background is clipped to the curve of the content-box when 'background-clip: content-box'</title>
+        <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
+        <style type="text/css">
+            .base
+            {
+                width: 98px;
+                height: 98px;
+                border: 10px double black;
+                padding: 11px;
+                border-radius: 40px;
+            }
+            .cover
+            {
+                margin: -120px 0 40px 20px;
+                width: 100px;
+                height: 100px;
+                border-radius: 20px;
+                background-color: black;
+            }
+        </style>
+    </head>
+    <body>
+        <p>Test passes if there is no red visible on the page.</p>
+        <div class="base"></div>
+        <div class="cover"></div>
+        <div class="base"></div>
+        <div class="cover"></div>
+    </body>
+</html>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/border-radius-clipping-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/border-radius-clipping-ref.html
index 344cd01c7a1..2aeef90eb05 100644
--- a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/border-radius-clipping-ref.html
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/border-radius-clipping-ref.html
@@ -11,14 +11,19 @@
     {
       background-color: green;
       border-radius: 50%;
+      margin: 20px;
       height: 100px;
-      left: 20px;
-      position: relative;
-      top: 20px;
       width: 100px;
+      float: left;
     }
   </style>
 
-  <p>Test passes if there is a filled green circle and <strong>no red</strong>.
+  <p>Test passes if there are four filled green circles and <strong>no red</strong>.
+
+  <div></div>
+
+  <div></div>
+
+  <div></div>
 
   <div></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-039-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-039-ref.html
new file mode 100644
index 00000000000..6f364d09a2b
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-039-ref.html
@@ -0,0 +1,75 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reference Test</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div.blue
+    {
+      background-color: rgba(0, 0, 255, 0.5);  /* semi-transparent blue */
+      border: black double 18px;
+      height: 36px;
+      width: 36px;
+    }
+
+  div#sub-test1-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 72px; /* offsetHeight == 72px */
+      height: 72px;
+      left: 72px; /* offsetWidth == 72px */
+      position: relative;
+      width: 36px;
+    }
+
+  div#sub-test21-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 126px; /* 18px + 72px + 36px == 126px */
+      height: 18px;
+      left: 18px;
+      position: relative;
+      width: 108px;
+    }
+
+  div#sub-test22-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 126px;
+      height: 72px;
+      left: 72px;
+      position: relative;
+      width: 54px;
+    }
+
+  div#sub-test23-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 126px;
+      height: 18px;
+      left: 18px;
+      position: relative;
+      width: 108px;
+    }
+
+  div#sub-test3-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 162px;
+      height: 36px;
+      left: 72px;
+      position: relative;
+      width: 18px;
+    }
+  </style>
+
+  <h3>Not inset and Npx 0px: 36px 0px</h3>
+
+  <div class="blue"></div><div id="sub-test1-orange"></div>
+
+  <div class="blue" style="position: relative; bottom: 36px;"></div><div id="sub-test21-orange"></div><div id="sub-test22-orange"></div><div id="sub-test23-orange"></div>
+
+  <div class="blue" style="position: relative; bottom: 108px;"></div><div id="sub-test3-orange"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-040-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-040-ref.html
new file mode 100644
index 00000000000..14159cfcdf5
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-040-ref.html
@@ -0,0 +1,75 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reference Test</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div.blue
+    {
+      background-color: rgba(0, 0, 255, 0.5);  /* semi-transparent blue */
+      border: black double 18px;
+      height: 36px;
+      width: 36px;
+    }
+
+  div#sub-test41-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 54px; /* offsetHeight == 54px */
+      height: 54px;
+      left: 72px;
+      position: relative;
+      width: 36px;
+    }
+
+  div#sub-test42-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 54px;
+      height: 18px;
+      left: 36px;
+      position: relative;
+      width: 72px;
+    }
+
+  div#sub-test51-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 90px; /* 18px + 72px == 90px */
+      height: 72px;
+      left: 72px;
+      position: relative;
+      width: 54px;
+    }
+
+  div#sub-test52-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 90px;
+      height: 36px;
+      left: 18px;
+      position: relative;
+      width: 108px;
+    }
+
+  div#sub-test6-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      bottom: 108px;
+      height: 36px;
+      left: 72px;
+      position: relative;
+      width: 18px;
+    }
+  </style>
+
+  <h3>Not inset and Npx Mpx: 36px 18px</h3>
+
+  <div class="blue"></div><div id="sub-test41-orange"></div><div id="sub-test42-orange"></div>
+
+  <div class="blue" style="position: relative; bottom: 18px;"></div><div id="sub-test51-orange"></div><div id="sub-test52-orange"></div>
+
+  <div class="blue" style="position: relative; bottom: 72px;"></div><div id="sub-test6-orange"></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-041-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-041-ref.html
new file mode 100644
index 00000000000..8b93bbdf112
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-041-ref.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reference Test</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div.blue
+    {
+      background-color: rgba(0, 0, 255, 0.5);  /* semi-transparent blue */
+      border: black double 18px;
+      height: 36px;
+      margin-bottom: 36px;
+      width: 36px;
+    }
+
+  div#sub-test7-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 36px;
+      width: 18px;
+    }
+
+  div#sub-test81-orange , div#sub-test83-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 12px;
+      width: 36px;
+    }
+
+  div#sub-test82-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 12px;
+      width: 30px;
+    }
+
+  div#sub-test9-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 36px;
+      width: 12px;
+    }
+  </style>
+
+  <h3>With inset and Npx 0px: 18px 0px</h3>
+
+  <div class="blue"><div id="sub-test7-orange"></div></div>
+
+  <div class="blue"><div id="sub-test81-orange"></div><div id="sub-test82-orange"></div><div id="sub-test83-orange"></div></div>
+
+  <div class="blue"><div id="sub-test9-orange"></div></div>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-042-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-042-ref.html
new file mode 100644
index 00000000000..ccc209a02d2
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-042-ref.html
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Reference Test</title>
+
+  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
+
+  <style>
+  div.blue
+    {
+      background-color: rgba(0, 0, 255, 0.5);  /* semi-transparent blue */
+      border: black double 18px;
+      height: 36px;
+      margin-bottom: 36px;
+      width: 36px;
+    }
+
+  div#sub-test101-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 12px;
+      width: 36px;
+    }
+
+  div#sub-test102-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 24px;
+      width: 18px;
+    }
+
+  div#sub-test111-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 24px;
+      width: 36px;
+    }
+
+  div#sub-test112-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 12px;
+      width: 30px;
+    }
+
+  div#sub-test121-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 6px;
+      width: 36px;
+    }
+
+  div#sub-test122-orange
+    {
+      background-color: rgba(255, 165, 0, 0.5);  /* semi-transparent orange */
+      height: 30px;
+      width: 12px;
+    }
+  </style>
+
+  <h3>With inset and Npx Mpx: 18px 12px</h3>
+
+  <div class="blue"><div id="sub-test101-orange"></div><div id="sub-test102-orange"></div></div>
+
+  <div class="blue"><div id="sub-test111-orange"></div><div id="sub-test112-orange"></div></div>
+
+  <div class="blue"><div id="sub-test121-orange"></div><div id="sub-test122-orange"></div></div>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/getclientrects-000.html b/tests/wpt/web-platform-tests/css/css-multicol/getclientrects-000.html
new file mode 100644
index 00000000000..be11ba99493
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/getclientrects-000.html
@@ -0,0 +1,148 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/API/Element/getClientRects">
+<link rel="help" href="https://drafts.csswg.org/css-multicol/">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+  .multicol {
+      visibility: hidden;
+      position: absolute;
+      left: 100px;
+      top: 50px;
+      columns: 3;
+      column-gap: 10px;
+      inline-size: 290px;
+      font: 20px/1 Ahem;
+      orphans: 1;
+      widows: 1;
+  }
+  #horizontalTbLtr {
+      writing-mode: horizontal-tb;
+  }
+  #verticalLrLtr {
+      writing-mode: vertical-lr;
+  }
+  #verticalRlLtr {
+      writing-mode: vertical-rl;
+  }
+  #horizontalTbRtl {
+      writing-mode: horizontal-tb;
+      direction: rtl;
+  }
+  #verticalLrRtl {
+      writing-mode: vertical-lr;
+      direction: rtl;
+  }
+  #verticalRlRtl {
+      writing-mode: vertical-rl;
+      direction: rtl;
+  }
+</style>
+<div class="multicol" id="horizontalTbLtr">
+  <div style="block-size:20px;"></div>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="verticalLrLtr">
+  <div style="block-size:20px;"></div>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="verticalRlLtr">
+  <div style="block-size:20px;"></div>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="horizontalTbRtl" >
+  <div style="block-size:20px;"></div>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="verticalLrRtl">
+  <div style="block-size:20px;"></div>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="verticalRlRtl">
+  <div style="block-size:20px;"></div>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+  test(()=> {
+      var span = document.querySelector("#horizontalTbLtr span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 100);
+      assert_equals(rects[0].top, 70);
+      assert_equals(rects[1].left, 200);
+      assert_equals(rects[1].top, 50);
+      assert_equals(rects[2].left, 200);
+      assert_equals(rects[2].top, 70);
+      assert_equals(rects[3].left, 300);
+      assert_equals(rects[3].top, 50);
+  }, "horizontal-tb ltr");
+
+  test(()=> {
+      var span = document.querySelector("#verticalLrLtr span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 120);
+      assert_equals(rects[0].top, 50);
+      assert_equals(rects[1].left, 100);
+      assert_equals(rects[1].top, 150);
+      assert_equals(rects[2].left, 120);
+      assert_equals(rects[2].top, 150);
+      assert_equals(rects[3].left, 100);
+      assert_equals(rects[3].top, 250);
+  }, "vertical-lr ltr");
+
+  test(()=> {
+      var span = document.querySelector("#verticalRlLtr span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 100);
+      assert_equals(rects[0].top, 50);
+      assert_equals(rects[1].left, 120);
+      assert_equals(rects[1].top, 150);
+      assert_equals(rects[2].left, 100);
+      assert_equals(rects[2].top, 150);
+      assert_equals(rects[3].left, 120);
+      assert_equals(rects[3].top, 250);
+  }, "vertical-rl ltr");
+  test(()=> {
+      var span = document.querySelector("#horizontalTbRtl span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 310);
+      assert_equals(rects[0].top, 70);
+      assert_equals(rects[1].left, 210);
+      assert_equals(rects[1].top, 50);
+      assert_equals(rects[2].left, 210);
+      assert_equals(rects[2].top, 70);
+      assert_equals(rects[3].left, 110);
+      assert_equals(rects[3].top, 50);
+  }, "horizontal-tb rtl");
+  test(()=> {
+      var span = document.querySelector("#verticalLrRtl span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 120);
+      assert_equals(rects[0].top, 260);
+      assert_equals(rects[1].left, 100);
+      assert_equals(rects[1].top, 160);
+      assert_equals(rects[2].left, 120);
+      assert_equals(rects[2].top, 160);
+      assert_equals(rects[3].left, 100);
+      assert_equals(rects[3].top, 60);
+  }, "vertical-lr rtl");
+  test(()=> {
+      var span = document.querySelector("#verticalRlRtl span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 100);
+      assert_equals(rects[0].top, 260);
+      assert_equals(rects[1].left, 120);
+      assert_equals(rects[1].top, 160);
+      assert_equals(rects[2].left, 100);
+      assert_equals(rects[2].top, 160);
+      assert_equals(rects[3].left, 120);
+      assert_equals(rects[3].top, 60);
+  }, "vertical-rl rtl");
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-multicol/getclientrects-001.html b/tests/wpt/web-platform-tests/css/css-multicol/getclientrects-001.html
new file mode 100644
index 00000000000..630e5ee0f77
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-multicol/getclientrects-001.html
@@ -0,0 +1,148 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://developer.mozilla.org/en-US/docs/Web/API/Element/getClientRects">
+<link rel="help" href="https://drafts.csswg.org/css-multicol/">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+  .multicol {
+      visibility: hidden;
+      position: absolute;
+      left: 100px;
+      top: 50px;
+      columns: 3;
+      column-gap: 10px;
+      inline-size: 290px;
+      font: 20px/1 Ahem;
+      orphans: 1;
+      widows: 1;
+  }
+  #horizontalTbLtr {
+      writing-mode: horizontal-tb;
+  }
+  #verticalLrLtr {
+      writing-mode: vertical-lr;
+  }
+  #verticalRlLtr {
+      writing-mode: vertical-rl;
+  }
+  #horizontalTbRtl {
+      writing-mode: horizontal-tb;
+      direction: rtl;
+  }
+  #verticalLrRtl {
+      writing-mode: vertical-lr;
+      direction: rtl;
+  }
+  #verticalRlRtl {
+      writing-mode: vertical-rl;
+      direction: rtl;
+  }
+</style>
+<div class="multicol" id="horizontalTbLtr">
+  <br>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="verticalLrLtr">
+  <br>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="verticalRlLtr">
+  <br>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="horizontalTbRtl" >
+  <br>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="verticalLrRtl">
+  <br>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<div class="multicol" id="verticalRlRtl">
+  <br>
+  <span>XXXX XXXX XXXX XXXX</span>
+</div>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+  test(()=> {
+      var span = document.querySelector("#horizontalTbLtr span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 100);
+      assert_equals(rects[0].top, 70);
+      assert_equals(rects[1].left, 200);
+      assert_equals(rects[1].top, 50);
+      assert_equals(rects[2].left, 200);
+      assert_equals(rects[2].top, 70);
+      assert_equals(rects[3].left, 300);
+      assert_equals(rects[3].top, 50);
+  }, "horizontal-tb ltr");
+
+  test(()=> {
+      var span = document.querySelector("#verticalLrLtr span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 120);
+      assert_equals(rects[0].top, 50);
+      assert_equals(rects[1].left, 100);
+      assert_equals(rects[1].top, 150);
+      assert_equals(rects[2].left, 120);
+      assert_equals(rects[2].top, 150);
+      assert_equals(rects[3].left, 100);
+      assert_equals(rects[3].top, 250);
+  }, "vertical-lr ltr");
+
+  test(()=> {
+      var span = document.querySelector("#verticalRlLtr span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 100);
+      assert_equals(rects[0].top, 50);
+      assert_equals(rects[1].left, 120);
+      assert_equals(rects[1].top, 150);
+      assert_equals(rects[2].left, 100);
+      assert_equals(rects[2].top, 150);
+      assert_equals(rects[3].left, 120);
+      assert_equals(rects[3].top, 250);
+  }, "vertical-rl ltr");
+  test(()=> {
+      var span = document.querySelector("#horizontalTbRtl span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 310);
+      assert_equals(rects[0].top, 70);
+      assert_equals(rects[1].left, 210);
+      assert_equals(rects[1].top, 50);
+      assert_equals(rects[2].left, 210);
+      assert_equals(rects[2].top, 70);
+      assert_equals(rects[3].left, 110);
+      assert_equals(rects[3].top, 50);
+  }, "horizontal-tb rtl");
+  test(()=> {
+      var span = document.querySelector("#verticalLrRtl span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 120);
+      assert_equals(rects[0].top, 260);
+      assert_equals(rects[1].left, 100);
+      assert_equals(rects[1].top, 160);
+      assert_equals(rects[2].left, 120);
+      assert_equals(rects[2].top, 160);
+      assert_equals(rects[3].left, 100);
+      assert_equals(rects[3].top, 60);
+  }, "vertical-lr rtl");
+  test(()=> {
+      var span = document.querySelector("#verticalRlRtl span");
+      var rects = span.getClientRects();
+      assert_equals(rects.length, 4);
+      assert_equals(rects[0].left, 100);
+      assert_equals(rects[0].top, 260);
+      assert_equals(rects[1].left, 120);
+      assert_equals(rects[1].top, 160);
+      assert_equals(rects[2].left, 100);
+      assert_equals(rects[2].top, 160);
+      assert_equals(rects[3].left, 120);
+      assert_equals(rects[3].top, 60);
+  }, "vertical-rl rtl");
+</script>
diff --git a/tests/wpt/web-platform-tests/css/css-pseudo/placeholder-excluded-properties.html b/tests/wpt/web-platform-tests/css/css-pseudo/placeholder-excluded-properties.html
new file mode 100644
index 00000000000..dc5718164ce
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-pseudo/placeholder-excluded-properties.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<title>::placeholder should not support 'writing-mode', 'direction', and 'text-orientation'</title>
+<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#placeholder-pseudo">
+<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#first-line-styling">
+<link rel="match" href="reference/placeholder-excluded-properties-ref.html">
+<style>
+.horizontal::placeholder {
+  writing-mode: vertical-rl;
+  direction: rtl;
+}
+
+.vertical {
+  writing-mode: vertical-rl;
+}
+.vertical::placeholder {
+  text-orientation: upright;
+}
+</style>
+<body>
+<input class="horizontal" placeholder="placeholder">
+<input class="vertical" placeholder="placeholder">
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-pseudo/reference/placeholder-excluded-properties-ref.html b/tests/wpt/web-platform-tests/css/css-pseudo/reference/placeholder-excluded-properties-ref.html
new file mode 100644
index 00000000000..0e573cb3d6c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-pseudo/reference/placeholder-excluded-properties-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<style>
+.vertical {
+  writing-mode: vertical-rl;
+}
+</style>
+<body>
+<input placeholder="placeholder">
+<input class="vertical" placeholder="placeholder">
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-composition.html b/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-composition.html
index fa0118d50f4..f9a4527342f 100644
--- a/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-composition.html
+++ b/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-composition.html
@@ -10,11 +10,59 @@
 
 <body>
 <script>
+// Numerical precision may cause an axis aligned rotation to appear slightly
+// misaligned. Convert to (x, y, z, angle) form with rounding for comparison.
+function parseRotation(args) {
+  const array = args.split(' ');
+  if (array.length == 1) {
+    // Angle or 'none'.
+    return !!parseFloat(args) ? roundNumbers('0 0 1 ' + args) : args;
+  }
+  if (array.length == 2) {
+    // Axis name + angle
+    let axis = array[0];
+    let angle = array[1];
+    switch (array[0]) {
+      case 'x':
+        axis = '1 0 0 ';
+        break;
+      case 'y':
+        axis = '0 1 0';
+        break;
+      case 'z':
+        axis = '0 0 1';
+        break;
+    }
+    return roundNumbers(axis + ' ' + angle);
+  }
+  if (array.length == 4) {
+    // Axis as [x,y,z] triplet + angle.
+    // Normalize the axis (if possible) for comparison.
+    let x = parseFloat(array[0]);
+    let y = parseFloat(array[1]);
+    let z = parseFloat(array[2]);
+    const angle = array[3];
+    const length = Math.sqrt(x*x + y*y + z*z);
+    if (length > 1e-4) {
+      x /= length;
+      y /= length;
+      z /= length;
+    }
+    return roundNumbers(`${x} ${y} ${z} ${angle}`);
+  }
+  return args;
+}
+
+function compareRotations(actual, expected) {
+  assert_equals(parseRotation(actual), parseRotation(expected));
+}
+
 test_composition({
   property: 'rotate',
   underlying: '100deg',
   addFrom: '10deg',
   addTo: '30deg',
+  comparisonFunction: compareRotations
 }, [
   {at: -1, expect: '90deg'},
   {at: 0, expect: '110deg'},
@@ -29,6 +77,7 @@ test_composition({
   underlying: '1 0 0 200deg',
   addFrom: '1 0 0 -100deg',
   replaceTo: '1 0 0 40deg',
+  comparisonFunction: compareRotations
 }, [
   {at: -1, expect: '1 0 0 160deg'},
   {at: 0, expect: '1 0 0 100deg'},
@@ -43,6 +92,7 @@ test_composition({
   underlying: '0 1 0 -40deg',
   replaceFrom: '0 1 0 50deg',
   addTo: '0 1 0 10deg',
+  comparisonFunction: compareRotations
 }, [
   {at: -1, expect: '0 1 0 130deg'},
   {at: 0, expect: '0 1 0 50deg'},
@@ -57,13 +107,14 @@ test_composition({
   underlying: '1 2 3 40deg',
   addFrom: '2 4 6 10deg',
   addTo: '3 6 9 50deg',
+  comparisonFunction: compareRotations
 }, [
-  {at: -1, expect: '1 2 3 10deg'},
-  {at: 0, expect: '1 2 3 50deg'},
-  {at: 0.25, expect: '1 2 3 60deg'},
-  {at: 0.75, expect: '1 2 3 80deg'},
-  {at: 1, expect: '1 2 3 90deg'},
-  {at: 2, expect: '1 2 3 130deg'},
+  {at: -1, expect: '0.27 0.53 0.8 10deg'},
+  {at: 0, expect: '0.27 0.53 0.8 50deg'},
+  {at: 0.25, expect: '0.27 0.53 0.8 60deg'},
+  {at: 0.75, expect: '0.27 0.53 0.8 80deg'},
+  {at: 1, expect: '0.27 0.53 0.8 90deg'},
+  {at: 2, expect: '0.27 0.53 0.8 130deg'},
 ]);
 
 test_composition({
@@ -71,13 +122,15 @@ test_composition({
   underlying: '1 2 3 270deg',
   addFrom: '1 2 3 90deg',
   replaceTo: '0 1 0 100deg',
+  comparisonFunction: compareRotations
 }, [
-  {at: -1, expect: '-5.49276e-17 -1 -1.64783e-16 100deg'},
-  {at: 0, expect: '1 2 3 360deg'},
-  {at: 0.25, expect: '-1.20172e-16 1 -3.60516e-16 25deg'},
-  {at: 0.75, expect: '-1.51909e-17 1 -4.55726e-17 75deg'},
-  {at: 1, expect: '0 1 0 100deg'},
-  {at: 2, expect: '-3.3235e-17 -1 -9.97049e-17 160deg'},
+  {at: -1, expect: '0 -1 0 100deg'},
+  {at: 0, expect: '0.27 0.53 0.8 360deg'},
+  {at: 0.25, expect: 'y 25deg'},
+  {at: 0.75, expect: 'y 75deg'},
+  {at: 1, expect: 'y 100deg'},
+  // Accept both the SLERP and the common axis solution, which are equivalent.
+  {at: 2, expect: '0 -1 0 160deg', option: 'y 200deg'},
 ]);
 
 test_composition({
@@ -85,27 +138,30 @@ test_composition({
   underlying: '1 2 3 90deg',
   addFrom: '2 4 6 270deg',
   replaceTo: '0 1 0 100deg',
+  comparisonFunction: compareRotations
 }, [
-  {at: -1, expect: '-5.49276e-17 -1 -1.64783e-16 100deg'},
-  {at: 0, expect: '1 2 3 360deg'},
-  {at: 0.25, expect: '-1.20172e-16 1 -3.60516e-16 25deg'},
-  {at: 0.75, expect: '-1.51909e-17 1 -4.55726e-17 75deg'},
-  {at: 1, expect: '0 1 0 100deg'},
-  {at: 2, expect: '-3.3235e-17 -1 -9.97049e-17 160deg'},
+  {at: -1, expect: '0 -1 0 100deg'},
+  {at: 0, expect: '0.27 0.53 0.8 360deg'},
+  {at: 0.25, expect: 'y 25deg'},
+  {at: 0.75, expect: 'y 75deg'},
+  {at: 1, expect: 'y 100deg'},
+  // Accept both the SLERP and the common axis solution, which are equivalent.
+  {at: 2, expect: '0 -1 0 160deg', option: 'y 200deg'},
 ]);
 
 test_composition({
   property: 'rotate',
-  underlying: '1 0 0 90deg',
-  addFrom: '0 1 0 180deg',
-  replaceTo: '0 0 1 90deg',
+  underlying: '1 0 0 0deg',
+  addFrom: '1 1 0 90deg',
+  replaceTo: '0 1 1 135deg',
+  comparisonFunction: compareRotations
 }, [
-  {at: -1, expect: '-6.12323e-17 -1 1.57009e-16 90deg'},
-  {at: 0, expect: '-4.32978e-17 -0.707107 -0.707107 180deg'},
-  {at: 0.25, expect: '-1.48952e-16 -0.894427 -0.447214 131.81deg'},
-  {at: 0.75, expect: '-2.94392e-17 -0.707107 0.707107 70.5288deg'},
-  {at: 1, expect: '90deg'},
-  {at: 2, expect: '-6.12323e-17 -1 -4.71028e-16 90deg'},
+  {at: -1, expect: '0.67 -0.06 -0.74 124.97deg'},
+  {at: 0, expect: '0.71 0.71 0 90deg'},
+  {at: 0.25, expect: '0.54 0.8 0.26 94.83deg'},
+  {at: 0.75, expect: '0.17 0.78 0.61 118.68deg'},
+  {at: 1, expect: '0 0.71 0.71 135deg'},
+  {at: 2, expect: '-0.52 0.29 0.81 208.96deg'},
 ]);
 
 test_composition({
@@ -113,13 +169,14 @@ test_composition({
   underlying: 'none',
   addFrom: 'none',
   replaceTo: '0 1 0 100deg',
+  comparisonFunction: compareRotations
 }, [
-  {at: -1, expect: '0 1 0 -100deg'},
-  {at: 0, expect: 'none'},
-  {at: 0.25, expect: '0 1 0 25deg'},
-  {at: 0.75, expect: '0 1 0 75deg'},
-  {at: 1, expect: '0 1 0 100deg'},
-  {at: 2, expect: '0 1 0 200deg'},
+  {at: -1, expect: 'y -100deg'},
+  {at: 0, expect: 'y 0deg'},
+  {at: 0.25, expect: 'y 25deg'},
+  {at: 0.75, expect: 'y 75deg'},
+  {at: 1, expect: 'y 100deg'},
+  {at: 2, expect: 'y 200deg'},
 ]);
 
 test_composition({
@@ -127,13 +184,14 @@ test_composition({
   underlying: 'none',
   addFrom: '2 4 6 270deg',
   replaceTo: 'none',
+  comparisonFunction: compareRotations
 }, [
-  {at: -1, expect: '2 4 6 540deg'},
-  {at: 0, expect: '2 4 6 270deg'},
-  {at: 0.25, expect: '2 4 6 202.5deg'},
-  {at: 0.75, expect: '2 4 6 67.5deg'},
-  {at: 1, expect: 'none'},
-  {at: 2, expect: '2 4 6 -270deg'},
+  {at: -1, expect: '0.27 0.53 0.8 540deg'},
+  {at: 0, expect: '0.27 0.53 0.8 270deg'},
+  {at: 0.25, expect: '0.27 0.53 0.8 202.5deg'},
+  {at: 0.75, expect: '0.27 0.53 0.8 67.5deg'},
+  {at: 1, expect: '0.27 0.53 0.8 0deg'},
+  {at: 2, expect: '0.27 0.53 0.8 -270deg'},
 ]);
 
 test_composition({
@@ -141,6 +199,7 @@ test_composition({
   underlying: '1 2 3 90deg',
   addFrom: 'none',
   replaceTo: '0 1 0 100deg',
+  comparisonFunction: compareRotations
 }, [
   {at: -1, expect: '0.31 -0.22 0.92 131.66deg'},
   {at: 0, expect: '1 2 3 90deg'},
@@ -155,13 +214,14 @@ test_composition({
   underlying: '1 2 3 90deg',
   addFrom: '2 4 6 270deg',
   replaceTo: 'none',
+  comparisonFunction: compareRotations
 }, [
-  {at: -1, expect: '1 2 3 720deg'},
-  {at: 0, expect: '1 2 3 360deg'},
-  {at: 0.25, expect: '1 2 3 270deg'},
-  {at: 0.75, expect: '1 2 3 90deg'},
-  {at: 1, expect: 'none'},
-  {at: 2, expect: '1 2 3 -360deg'},
+  {at: -1, expect: '0.27 0.53 0.8 720deg'},
+  {at: 0, expect: '0.27 0.53 0.8 360deg'},
+  {at: 0.25, expect: '0.27 0.53 0.8 270deg'},
+  {at: 0.75, expect: '0.27 0.53 0.8 90deg'},
+  {at: 1, expect: '0.27 0.53 0.8 0deg'},
+  {at: 2, expect: '0.27 0.53 0.8 -360deg'},
 ]);
 </script>
 </body>
diff --git a/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-transform-equivalent-ref.html b/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-transform-equivalent-ref.html
new file mode 100644
index 00000000000..e95e62be888
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-transform-equivalent-ref.html
@@ -0,0 +1,54 @@
+<!doctype html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>Reference for rotate transform equivalent</title>
+<script src="/common/reftest-wait.js"></script>
+<style>
+  .block {
+    border: 2px solid white; /* Avoid anti-aliasing artifacts */
+    height: 100px;
+    width: 100px;
+    position: absolute;
+    left: 100px;
+    top: 100px;
+  }
+
+  .overlay {
+    background: green;
+    z-index: 2;
+  }
+</style>
+<body>
+  <div id="transform" class="block overlay"></div>
+
+<script>
+  'use strict';
+
+  async function waitForNextFrame() {
+    return new Promise(resolve => {
+      window.requestAnimationFrame(() => {
+        resolve();
+      });
+    });
+  }
+
+  async function createAnimation(elementName, keyframes) {
+    const element = document.getElementById(elementName);
+    const anim = element.animate(keyframes, 1000);
+    anim.pause();
+    anim.currentTime = 500;
+    return anim.ready;
+  }
+
+  onload = async function() {
+    await waitForNextFrame();
+
+    await createAnimation('transform', [
+        {transform: 'matrix3d(1, 0, 0, 0,   0, 0, 1, 0,   0, -1, 0, 0,   0, 0, 0, 1)'},
+        {transform: 'matrix(0, 1, -1, 0, 0, 0)'}]);
+
+    await waitForNextFrame();
+    takeScreenshot();
+  };
+</script>
+</body>
diff --git a/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-transform-equivalent.html b/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-transform-equivalent.html
new file mode 100644
index 00000000000..7474c79e7e6
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-transforms/animation/rotate-transform-equivalent.html
@@ -0,0 +1,73 @@
+<!doctype html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>Rotate transform equivalent</title>
+<link rel="match" href="rotate-transform-equivalent-ref.html">
+<link rel="help" href="https://drafts.csswg.org/css-transforms-2/#ctm">
+<script src="/common/reftest-wait.js"></script>
+<style>
+  .block {
+    border: 2px solid white; /* Avoid anti-aliasing artifacts */
+    height: 100px;
+    width: 100px;
+    position: absolute;
+    left: 100px;
+    top: 100px;
+  }
+
+  .rotation {
+    background: red;
+  }
+
+  .overlay {
+    background: green;
+  }
+
+  #rotateAdd {
+    rotate: 1 0 0 45deg;
+  }
+</style>
+<body>
+  <div id="rotateAdd" class="block rotation"></div>
+  <div id="rotateReplace" class="block rotation"></div>
+  <div id="transform" class="block overlay"></div>
+
+<script>
+  'use strict';
+
+  async function waitForNextFrame() {
+    return new Promise(resolve => {
+      window.requestAnimationFrame(() => {
+        resolve();
+      });
+    });
+  }
+
+  async function createAnimation(elementName, keyframes) {
+    const element = document.getElementById(elementName);
+    const anim = element.animate(keyframes, 1000);
+    anim.pause();
+    anim.currentTime = 500;
+    return anim.ready;
+  }
+
+  onload = async function() {
+    await waitForNextFrame();
+
+    await createAnimation('rotateAdd', [
+        {rotate: '1 0 0 45deg', composite: 'add'},
+        {rotate: '0 0 1 90deg'}]);
+    await createAnimation('rotateReplace', [
+        {rotate: '1 0 0 90deg'},
+        {rotate: '0 0 1 90deg'}]);
+
+    await createAnimation('transform', [
+        {transform: 'matrix3d(1, 0, 0, 0,   0, 0, 1, 0,   0, -1, 0, 0,   0, 0, 0, 1)'},
+        {transform: 'matrix(0, 1, -1, 0, 0, 0)'}]);
+
+    await waitForNextFrame();
+    takeScreenshot();
+  };
+</script>
+</body>
+
diff --git a/tests/wpt/web-platform-tests/css/support/interpolation-testcommon.js b/tests/wpt/web-platform-tests/css/support/interpolation-testcommon.js
index 16a1c0e7f7f..999a1e05428 100644
--- a/tests/wpt/web-platform-tests/css/support/interpolation-testcommon.js
+++ b/tests/wpt/web-platform-tests/css/support/interpolation-testcommon.js
@@ -421,4 +421,5 @@
   window.test_no_interpolation = test_no_interpolation;
   window.test_composition = test_composition;
   window.neutralKeyframe = neutralKeyframe;
+  window.roundNumbers = roundNumbers;
 })();
diff --git a/tests/wpt/web-platform-tests/gamepad/idlharness.window.js b/tests/wpt/web-platform-tests/gamepad/idlharness.https.window.js
similarity index 100%
rename from tests/wpt/web-platform-tests/gamepad/idlharness.window.js
rename to tests/wpt/web-platform-tests/gamepad/idlharness.https.window.js
diff --git a/tests/wpt/web-platform-tests/interfaces/gamepad.idl b/tests/wpt/web-platform-tests/interfaces/gamepad.idl
index c8a2fc590a8..e8252e2a85b 100644
--- a/tests/wpt/web-platform-tests/interfaces/gamepad.idl
+++ b/tests/wpt/web-platform-tests/interfaces/gamepad.idl
@@ -3,7 +3,7 @@
 // (https://github.com/w3c/webref)
 // Source: Gamepad (https://w3c.github.io/gamepad/)
 
-[Exposed=Window]
+[Exposed=Window, SecureContext]
 interface Gamepad {
   readonly attribute DOMString id;
   readonly attribute long index;
@@ -14,7 +14,7 @@ interface Gamepad {
   readonly attribute FrozenArray<GamepadButton> buttons;
 };
 
-[Exposed=Window]
+[Exposed=Window, SecureContext]
 interface GamepadButton {
   readonly attribute boolean pressed;
   readonly attribute boolean touched;
@@ -31,7 +31,7 @@ partial interface Navigator {
   sequence<Gamepad?> getGamepads();
 };
 
-[Exposed=Window]
+[Exposed=Window, SecureContext]
 
 interface GamepadEvent: Event {
   constructor(DOMString type, GamepadEventInit eventInitDict);
diff --git a/tests/wpt/web-platform-tests/mediacapture-fromelement/HTMLCanvasElement-getImageData-noframe.html b/tests/wpt/web-platform-tests/mediacapture-fromelement/HTMLCanvasElement-getImageData-noframe.html
new file mode 100644
index 00000000000..48d445f897d
--- /dev/null
+++ b/tests/wpt/web-platform-tests/mediacapture-fromelement/HTMLCanvasElement-getImageData-noframe.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+<body>
+<canvas id="canvas"></canvas>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script>
+promise_test(async t => {
+  const canvas = document.getElementById("canvas");
+  const ctx = canvas.getContext("2d");
+  const stream = canvas.captureStream();
+  t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
+
+  const video = document.createElement("video");
+  video.srcObject = stream;
+
+  ctx.getImageData(0, 0, canvas.width, canvas.height);
+
+  assert_equals(video.readyState, video.HAVE_NOTHING,
+    "Video element was just created");
+
+  // Wait a bit so the video element can update readyState in case of a frame.
+  await new Promise(r => t.step_timeout(r, 100));
+
+  assert_equals(video.readyState, video.HAVE_NOTHING,
+    "Video element did not get a frame from the canvas");
+}, "CanvasRenderingContext2D.getImageData() does not lead to a frame being captured");
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/paint-timing/fcp-only/fcp-ensure-update-the-rendering-step.html b/tests/wpt/web-platform-tests/paint-timing/fcp-only/fcp-ensure-update-the-rendering-step.html
new file mode 100644
index 00000000000..700707de33a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/paint-timing/fcp-only/fcp-ensure-update-the-rendering-step.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<head>
+    <title>
+      Ensure the timing is marked during the `update the rendering` step.
+    </title>
+</head>
+<style>
+    #main {
+        width: 100px;
+        height: 100px;
+        left: 0px;
+        position: relative;
+        top: 0;
+        background-image: url(../resources/circles.png);
+        opacity: 0;
+    }
+
+    #main.contentful {
+        opacity: 0.1;
+    }
+</style>
+<body>
+<script src="../resources/utils.js"></script>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="main"></div>
+<script>
+setup({"hide_test_state": true});
+async_test(function (t) {
+    assert_implements(window.PerformancePaintTiming, "Paint Timing isn't supported.");
+    let fired = false;
+    const main = document.getElementById('main');
+    let animationFrameStamps = [];
+    requestAnimationFrame(function frame(stamp) {
+        animationFrameStamps.unshift(stamp);
+        main.className = "contentful";
+        while (performance.now() - stamp <= 5) {
+          /* Busy-wait */
+        }
+        if(!fired)
+            requestAnimationFrame(frame);
+    });
+    new PerformanceObserver(t.step_func(list=>{
+        for (let entry of list.getEntries()) {
+            if (entry.name == "first-contentful-paint") {
+                fired = true;
+                assert_any(assert_approx_equals, entry.startTime, animationFrameStamps, 1, "One of the past requestAnimationFrame should have the same timestamp as paint entry");
+                t.done();
+            }
+        }
+    })).observe({type: "paint"});
+}, 'The first-contentful-paint timestamp should be same as the last RAF');
+</script>
+</body>
+</html>
diff --git a/tests/wpt/web-platform-tests/scroll-animations/css/scroll-timeline-cssom.tentative.html b/tests/wpt/web-platform-tests/scroll-animations/css/scroll-timeline-cssom.tentative.html
index d9e4cc08cbe..1e6f581992f 100644
--- a/tests/wpt/web-platform-tests/scroll-animations/css/scroll-timeline-cssom.tentative.html
+++ b/tests/wpt/web-platform-tests/scroll-animations/css/scroll-timeline-cssom.tentative.html
@@ -100,6 +100,75 @@ test_name('a\\9 b', 'a\tb'); // U+0009 CHARACTER TABULATION
 test_name('"foo"', 'foo');
 test_name('"none"', 'none');
 
+// CSSScrollTimelineRule.cssText
+
+function test_csstext(description, specified, expected) {
+  if (typeof(expected) == 'undefined')
+    expected = specified;
+  test_stylesheet(specified, (rules) => {
+    assert_equals(rules.length, 1);
+    assert_equals(rules[0].constructor.name, 'CSSScrollTimelineRule');
+    assert_equals(rules[0].cssText, expected);
+  }, `CSSScrollTimelineRule.cssText: ${description}`);
+}
+
+test_csstext(
+  'empty rule',
+  `@scroll-timeline timeline {}`,
+  `@scroll-timeline timeline { }`);
+
+// U+0009 CHARACTER TABULATION
+test_csstext(
+  'escaped name',
+  `@scroll-timeline tab\\9 tab {}`,
+  `@scroll-timeline tab\\9 tab { }`);
+
+test_csstext(
+  'source descriptor',
+  `@scroll-timeline timeline { source: selector(#foo); }`);
+
+test_csstext(
+  'orientation descriptor',
+  `@scroll-timeline timeline { orientation: inline; }`);
+
+test_csstext(
+  'start descriptor (px)',
+  `@scroll-timeline timeline { start: 100px; }`);
+
+test_csstext(
+  'start descriptor (offset)',
+  `@scroll-timeline timeline { start: selector(#bar); }`);
+
+test_csstext(
+  'start descriptor (offset with edge)',
+  `@scroll-timeline timeline { start: selector(#bar) start; }`);
+
+test_csstext(
+  'start descriptor (offset with threshold)',
+  `@scroll-timeline timeline { start: selector(#bar) 1; }`);
+
+test_csstext(
+  'start descriptor (offset with edge and threshold)',
+  `@scroll-timeline timeline { start: selector(#bar) start 1; }`);
+
+test_csstext(
+  'start descriptor (offset with threshold and edge)',
+  `@scroll-timeline timeline { start: selector(#bar) 1 start; }`,
+  `@scroll-timeline timeline { start: selector(#bar) start 1; }`);
+
+test_csstext(
+  'time-range descriptor',
+  `@scroll-timeline timeline { time-range: 10s; }`);
+
+test_csstext(
+  'defaults',
+  `@scroll-timeline timeline { source: none; orientation: auto; start: auto; end: auto; time-range: auto; }`);
+
+test_csstext(
+  'order',
+  `@scroll-timeline timeline { orientation: auto; time-range: auto; source: none; end: auto; start: auto; }`,
+  `@scroll-timeline timeline { source: none; orientation: auto; start: auto; end: auto; time-range: auto; }`);
+
 // CSSScrollTimelineRule.source
 
 function test_source(specified, expected) {
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox_android.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
index bea0d9f4ee3..b219079de3d 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox_android.py
@@ -87,10 +87,10 @@ def env_options():
 
 
 class ProfileCreator(FirefoxProfileCreator):
-    def __init__(self, logger, prefs_root, config, test_type, extra_prefs, e10s,
+    def __init__(self, logger, prefs_root, config, test_type, extra_prefs,
                  enable_fission, browser_channel, certutil_binary, ca_certificate_path):
         super(ProfileCreator, self).__init__(logger, prefs_root, config, test_type, extra_prefs,
-                                             e10s, enable_fission, browser_channel, None,
+                                             True, enable_fission, browser_channel, None,
                                              certutil_binary, ca_certificate_path)
 
     def _set_required_prefs(self, profile):
@@ -100,11 +100,9 @@ class ProfileCreator(FirefoxProfileCreator):
             "places.history.enabled": False,
             "dom.send_after_paint_to_content": True,
             "network.preload": True,
+            "browser.tabs.remote.autostart": True,
         })
 
-        if self.e10s:
-            profile.set_preferences({"browser.tabs.remote.autostart": True})
-
         if self.test_type == "reftest":
             self.logger.info("Setting android reftest preferences")
             profile.set_preferences({
@@ -142,7 +140,7 @@ class FirefoxAndroidBrowser(Browser):
         self.stackwalk_binary = stackwalk_binary
         self.certutil_binary = certutil_binary
         self.ca_certificate_path = ca_certificate_path
-        self.e10s = e10s
+        self.e10s = True
         self.enable_webrender = enable_webrender
         self.stackfix_dir = stackfix_dir
         self.binary_args = binary_args
@@ -162,7 +160,6 @@ class FirefoxAndroidBrowser(Browser):
                                               config,
                                               test_type,
                                               extra_prefs,
-                                              e10s,
                                               False,
                                               browser_channel,
                                               certutil_binary,
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-duration-loop.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-duration-loop.html
new file mode 100644
index 00000000000..5fb8536b137
--- /dev/null
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-duration-loop.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>
+      Test AudioBufferSourceNode With Looping And Duration
+    </title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/webaudio/resources/audit-util.js"></script>
+    <script src="/webaudio/resources/audit.js"></script>
+  </head>
+  <body>
+    <script id="layout-test-code">
+      let audit = Audit.createTaskRunner();
+      audit.define('loop with duration', (task, should) => {
+        // Create the context
+        let context = new OfflineAudioContext(1, 4096, 48000);
+
+        // Create the sample buffer and fill the second half with 1
+        let buffer = context.createBuffer(1, 2048, context.sampleRate);
+        for(let i = 1024; i < 2048; i++) {
+          buffer.getChannelData(0)[i] = 1;
+        }
+
+        // Create the source and set its value
+        let source = context.createBufferSource();
+        source.loop = true;
+        source.loopStart = 1024 / context.sampleRate;
+        source.loopEnd = 2048 / context.sampleRate;
+        source.buffer = buffer;
+        source.connect(context.destination);
+        source.start(0, 1024 / context.sampleRate, 2048 / context.sampleRate);
+        // Expectations
+        let expected = new Float32Array(4096);
+        for(let i = 0; i < 2048; i++) {
+          expected[i] = 1;
+        }
+        // Render it!
+        context.startRendering()
+          .then(function(audioBuffer) {
+            should(audioBuffer.getChannelData, "audioBuffer.getChannelData").beEqualToArray(expected);
+          })
+          .then(task.done());
+      });
+
+      audit.run();
+
+    </script>
+  </body>
+</html>
diff --git a/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini b/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini
index 00516f36caf..91a921e042a 100644
--- a/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini
+++ b/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini
@@ -230,3 +230,18 @@
   [WebGL test #44: attachment 7 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 255,255,0,0]
     expected: FAIL
 
+  [WebGL test #48: attachment 3 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 0,14,0,0]
+    expected: FAIL
+
+  [WebGL test #50: attachment 5 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 202,203,0,0]
+    expected: FAIL
+
+  [WebGL test #49: attachment 4 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 233,0,0,0]
+    expected: FAIL
+
+  [WebGL test #41: attachment 4 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 233,0,0,0]
+    expected: FAIL
+
+  [WebGL test #40: attachment 3 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 0,14,0,0]
+    expected: FAIL
+