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
deleted file mode 100644
index f64b45fea6b..00000000000
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[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-003.html.ini
deleted file mode 100644
index f29da48a2a0..00000000000
--- a/tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-003.html]
-  [Miss float below something else]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-table-border-collapse-001.html.ini b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-table-border-collapse-001.html.ini
new file mode 100644
index 00000000000..ddeab4c9bac
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/css-backgrounds/box-shadow-table-border-collapse-001.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-table-border-collapse-001.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-iframes.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-iframes.html.ini
index 171592fc08f..6ef8bb1049f 100644
--- a/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-iframes.html.ini
+++ b/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-iframes.html.ini
@@ -2,3 +2,6 @@
   [elementsFromPoint on the root document for points in iframe elements]
     expected: FAIL
 
+  [elementsFromPoint on inner documents]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-invalid-cases.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
new file mode 100644
index 00000000000..e181af5397f
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
@@ -0,0 +1,4 @@
+[elementsFromPoint-invalid-cases.html]
+  [The root element is the last element returned for otherwise empty queries within the viewport]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/css/cssom-view/matchMedia-display-none-iframe.html.ini b/tests/wpt/metadata-layout-2020/css/cssom-view/matchMedia-display-none-iframe.html.ini
deleted file mode 100644
index e6e1f29e274..00000000000
--- a/tests/wpt/metadata-layout-2020/css/cssom-view/matchMedia-display-none-iframe.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[matchMedia-display-none-iframe.html]
-  expected: ERROR
diff --git a/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
index b60c7eadadc..87d9db57cdc 100644
--- a/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini
@@ -312,9 +312,6 @@
   [Response: combined response Content-Type: text/html;" \\" text/plain ";charset=GBK]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
@@ -324,9 +321,15 @@
   [<iframe>: combined response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: */* text/html]
+  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html */*]
+  [<iframe>: separate response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: 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 b2ffc8abf78..258fe374697 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
@@ -56,6 +56,6 @@
   [separate text/javascript x/x]
     expected: FAIL
 
-  [separate text/javascript error]
+  [separate text/javascript ]
     expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
index 30e1b851fd4..fb0ce3ea7db 100644
--- a/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,3 +11,9 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
+  [X-Content-Type-Options%3A%20%22nosniFF%22]
+    expected: FAIL
+
+  [X-Content-Type-Options%3A%0D%0AX-Content-Type-Options%3A%20nosniff]
+    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
deleted file mode 100644
index 87b07c3e670..00000000000
--- a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_1.html]
-  [Multiple history traversals from the same task]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
new file mode 100644
index 00000000000..75d75b4cda2
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_2.html]
+  [Multiple history traversals, last would be aborted]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
new file mode 100644
index 00000000000..385376c7321
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_4.html]
+  [Multiple history traversals, last would be aborted]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html.ini b/tests/wpt/metadata-layout-2020/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html.ini
new file mode 100644
index 00000000000..df298d2ff50
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html.ini
@@ -0,0 +1,4 @@
+[2d.pattern.transform.identity.html]
+  [Canvas test: 2d.pattern.transform.identity]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata-layout-2020/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html.ini b/tests/wpt/metadata-layout-2020/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html.ini
new file mode 100644
index 00000000000..95cd1994f01
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html.ini
@@ -0,0 +1,4 @@
+[2d.pattern.transform.infinity.html]
+  [Canvas test: 2d.pattern.transform.infinity]
+    expected: FAIL
+
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..88f4ddd0e9a 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-1.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_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 295031c1812..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: 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_nonescaping-1.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index 3080be9afc0..1b74d6e073d 100644
--- a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,5 +1,4 @@
 [iframe_sandbox_popups_nonescaping-1.html]
-  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/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 0407f0cc2b7..9eb581fcf1f 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: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
diff --git a/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index 7a36937927c..f4f994c5d6f 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: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata-layout-2020/webmessaging/with-ports/017.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/with-ports/017.html.ini
new file mode 100644
index 00000000000..064cf47545b
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webmessaging/with-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/webmessaging/without-ports/018.html.ini b/tests/wpt/metadata-layout-2020/webmessaging/without-ports/018.html.ini
new file mode 100644
index 00000000000..663a1f8fa30
--- /dev/null
+++ b/tests/wpt/metadata-layout-2020/webmessaging/without-ports/018.html.ini
@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 69ae1cbca4e..f3cd2301bc4 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -24013,6 +24013,50 @@
        ],
        {}
       ]
+     ],
+     "reftest_mismatch-print.html": [
+      "5fd4a7f52a81cfedf6068809609aae6067f7e176",
+      [
+       null,
+       [
+        [
+         "/infrastructure/reftest/reftest_match-print-ref.html",
+         "!="
+        ]
+       ],
+       {
+        "page_ranges": {
+         "/infrastructure/reftest/reftest_match-print-ref.html": [
+          [
+           1,
+           2
+          ]
+         ]
+        }
+       }
+      ]
+     ],
+     "reftest_mismatch_fail-print.html": [
+      "afec2ef51f31eb37cda3ae58d20b96775094a5bb",
+      [
+       null,
+       [
+        [
+         "/infrastructure/reftest/reftest_match-print-ref.html",
+         "!="
+        ]
+       ],
+       {
+        "page_ranges": {
+         "/infrastructure/reftest/reftest_match-print-ref.html": [
+          [
+           1,
+           2
+          ]
+         ]
+        }
+       }
+      ]
      ]
     }
    }
@@ -122984,6 +123028,19 @@
        {}
       ]
      ],
+     "box-shadow-table-border-collapse-001.html": [
+      "a4413ee97ffa0816294700a60f2f82e37d3762f0",
+      [
+       null,
+       [
+        [
+         "/css/css-backgrounds/reference/box-shadow-table-border-collapse-001-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "child-move-reveals-parent-background.html": [
       "e369eccd07f3c7c4146b1a419d5b110ff6d0eb7c",
       [
@@ -289652,6 +289709,10 @@
        "2bca4c6961b88faaafb8d621ca222faee48256ef",
        []
       ],
+      "box-shadow-table-border-collapse-001-ref.html": [
+       "fb2734a7c1a21a76f262703c9b6e3078ff3eae1d",
+       []
+      ],
       "css-border-radius-ref-001.html": [
        "b89f2853263b3771fa12bafb04a91a243a15226f",
        []
@@ -320051,7 +320112,7 @@
      []
     ],
     "echo-policy.py": [
-     "52a2bf97124f0e6f3ff05fcc693c751f1cd0fca0",
+     "2ad326dac72925cb40cdf55c9773982a9387090a",
      []
     ],
     "experimental-features": {
@@ -320282,7 +320343,7 @@
       },
       "support": {
        "contenttype_setter.py": [
-        "02eff653ccf9c3923cc2e070d249050d77da3e87",
+        "c4b1f8df27c1ef03ecbe7b6e8d4e238d8997248b",
         []
        ]
       }
@@ -320357,7 +320418,7 @@
        []
       ],
       "generate.py": [
-       "811413dbe2dfdcfec2c07bc09bdd7763c71b755a",
+       "a0bca546c75fdba873b5a99d2e593acdda2e5499",
        []
       ],
       "mathml.html": [
@@ -320518,7 +320579,7 @@
       []
      ],
      "encoding.py": [
-      "5f889e8db2a55cdfd23b0083a45a147a9fb87ab2",
+      "281aa0bce49162465f4a011fa50b8bbe831e213b",
       []
      ],
      "getElementsByClassNameFrame.htm": [
@@ -326965,7 +327026,7 @@
        []
       ],
       "spec.yaml": [
-       "be86c7fb6e1cfb780579345b577b990e4076b47a",
+       "d4b1840a69f7f3406f77735350aabcd97fa836d3",
        []
       ],
       "specextract.py": [
@@ -327003,7 +327064,7 @@
          []
         ],
         "fill-and-stroke-styles.yaml": [
-         "1483cadd44229493d89fc5c44a0c0da6e4ad6eb0",
+         "d05ae0911bd8f97c90e16ef2376235f67de3f553",
          []
         ],
         "line-styles.yaml": [
@@ -336387,7 +336448,7 @@
      },
      "tools": {
       "format_json.py": [
-       "2808a37906e0f2191a246ccbf1396a92fc1dd442",
+       "1059ac793aaf2fb5ee875ed9d7e8a02c0040be9e",
        []
       ]
      }
@@ -336416,7 +336477,7 @@
       ]
      },
      "static-import.py": [
-      "8d0f5d9f4204384ec9612ddca3ec30cec017d14e",
+      "68583be13c42d88481dd0e9d058bae3ab7eb3995",
       []
      ]
     },
@@ -336637,6 +336698,10 @@
         "f3dc3362fac41bbe8ded44589e898ef589cb1a89",
         []
        ],
+       "reftest_mismatch_fail-print.html.ini": [
+        "4520f4cbb11e8f47b7d01bba004099dd735b7c0c",
+        []
+       ],
        "reftest_mismatch_fail.html.ini": [
         "1055337e2d65cb8f21d2ceac62e35ce7bb99a976",
         []
@@ -347832,7 +347897,7 @@
       []
      ],
      "item.py": [
-      "5528e0995a8fd97914195d847662595470699058",
+      "e232925ed635c6984bcc8d0200229ffceaa2aa47",
       []
      ],
      "log.py": [
@@ -347844,7 +347909,7 @@
       []
      ],
      "sourcefile.py": [
-      "2a35400afe4d083bebfa181575acb3b503ad89bc",
+      "524eb0bddb255fbb8847aa4b064a105657418e85",
       []
      ],
      "testpaths.py": [
@@ -347869,7 +347934,7 @@
        []
       ],
       "test_sourcefile.py": [
-       "301c624b06d3b268bebba03909d482cad5734024",
+       "b4ba4638708cadf8a65c7a3decc964791a041dec",
        []
       ],
       "test_utils.py": [
@@ -354222,7 +354287,7 @@
         []
        ],
        "firefox.py": [
-        "f36b429897073785a02234c4fdefe76d537aecc5",
+        "8ffe82c662b8b1a2b28c32f967e933d23e9b053d",
         []
        ],
        "firefox_android.py": [
@@ -354290,11 +354355,11 @@
         []
        ],
        "base.py": [
-        "d803141b08d8789231242aeb929f30b02bdeb50c",
+        "82496fcad9c9d46dbf04b81fbf60b2e1dcdd1045",
         []
        ],
        "executorchrome.py": [
-        "9c3aad3f64a6cc16059cf65ab9e0d29a5221b8f1",
+        "3ae318795f0b62468a6a8a991fa07b2a78e2743b",
         []
        ],
        "executoredge.py": [
@@ -354310,7 +354375,7 @@
         []
        ],
        "executormarionette.py": [
-        "006c93fc06d0f7339a3bc1d1ef35f3e9e8fd748c",
+        "05223d374feb7bfeea1321d2ec8fbd99fa9fddb7",
         []
        ],
        "executoropera.py": [
@@ -354322,19 +354387,19 @@
         []
        ],
        "executorselenium.py": [
-        "b12299c1ff1914a1e5ef39779e5e1d95822bd158",
+        "ec7b8fcf189c9486e202b66007476e5dbd621f5c",
         []
        ],
        "executorservo.py": [
-        "54b366485efb0f7683683034a2b2c6dd18a150cd",
+        "efe93abc69c7009e22575fc59753917cadf1ce25",
         []
        ],
        "executorservodriver.py": [
-        "0680c4ed2299035146c2b1e478f4b3fa1c301101",
+        "071b506f9af90f7ea46e28ae8814a83996ed9f4a",
         []
        ],
        "executorwebdriver.py": [
-        "ea26fbcd20dda44f13bb500e10bb059c262bc4da",
+        "2b3d53d7445706ae3ab601c42e2f17496f6868db",
         []
        ],
        "executorwebkit.py": [
@@ -354512,7 +354577,7 @@
         ]
        },
        "test_executors.py": [
-        "a00554e478fdc6d4fd0bdc2a7b740e1e468164fb",
+        "3573683de39c974e59f2e81ae746af04b73a3324",
         []
        ],
        "test_expectedtree.py": [
@@ -354661,7 +354726,7 @@
        []
       ],
       "wpttest.py": [
-       "1078912a229bec1bbac0b2f781b9e8ef95b4ee1c",
+       "3750defa6a13de88d4e73f485b51b069db085c4b",
        []
       ]
      },
@@ -428638,7 +428703,7 @@
      ]
     ],
     "feature-policy-header-policy-disallowed-for-all.https.sub.html": [
-     "9a0f483ce44bc382fe12caaa6670838fa98d4209",
+     "971af0fa070d9ad40fd4f693500c38b8c85af0ef",
      [
       null,
       {}
@@ -439182,6 +439247,27 @@
          {}
         ]
        ],
+       "2d.pattern.transform.identity.html": [
+        "56a44df86bd3564da34c09e445b73ff290f03870",
+        [
+         null,
+         {}
+        ]
+       ],
+       "2d.pattern.transform.infinity.html": [
+        "d298d70c3505a7b09b7b4a1f802555d30ab4b7e5",
+        [
+         null,
+         {}
+        ]
+       ],
+       "2d.pattern.transform.invalid.html": [
+        "ebd2801241cee67eda8eacf9d2fa789e60821ec6",
+        [
+         null,
+         {}
+        ]
+       ],
        "2d.strokeStyle.default.html": [
         "91542e2892b47d323ff91ff28edb25721e9014bc",
         [
@@ -473100,7 +473186,7 @@
      ]
     ],
     "idlharness.html": [
-     "a3b2d1e1c63726c6ef795954af08d2a9409835f1",
+     "ea6efb27f8f41862830b9470b79bb85a331474b6",
      [
       null,
       {
@@ -517895,7 +517981,7 @@
        ]
       ],
       "no-dezippering.html": [
-       "3f8360417dd9818ffa77b4da286b5d32694b27d2",
+       "ccca103a3bc8583efb101048efb580fe21708ee3",
        [
         null,
         {}
diff --git a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini b/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
deleted file mode 100644
index f64b45fea6b..00000000000
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[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-003.html.ini
deleted file mode 100644
index f29da48a2a0..00000000000
--- a/tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[hit-test-floats-003.html]
-  [Miss float below something else]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/css/css-backgrounds/box-shadow-table-border-collapse-001.html.ini b/tests/wpt/metadata/css/css-backgrounds/box-shadow-table-border-collapse-001.html.ini
new file mode 100644
index 00000000000..ddeab4c9bac
--- /dev/null
+++ b/tests/wpt/metadata/css/css-backgrounds/box-shadow-table-border-collapse-001.html.ini
@@ -0,0 +1,2 @@
+[box-shadow-table-border-collapse-001.html]
+  expected: FAIL
diff --git a/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini b/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini
index 171592fc08f..6ef8bb1049f 100644
--- a/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini
+++ b/tests/wpt/metadata/css/cssom-view/elementsFromPoint-iframes.html.ini
@@ -2,3 +2,6 @@
   [elementsFromPoint on the root document for points in iframe elements]
     expected: FAIL
 
+  [elementsFromPoint on inner documents]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/cssom-view/elementsFromPoint-invalid-cases.html.ini b/tests/wpt/metadata/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
new file mode 100644
index 00000000000..e181af5397f
--- /dev/null
+++ b/tests/wpt/metadata/css/cssom-view/elementsFromPoint-invalid-cases.html.ini
@@ -0,0 +1,4 @@
+[elementsFromPoint-invalid-cases.html]
+  [The root element is the last element returned for otherwise empty queries within the viewport]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini b/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini
deleted file mode 100644
index e6e1f29e274..00000000000
--- a/tests/wpt/metadata/css/cssom-view/matchMedia-display-none-iframe.html.ini
+++ /dev/null
@@ -1,2 +0,0 @@
-[matchMedia-display-none-iframe.html]
-  expected: ERROR
diff --git a/tests/wpt/metadata/fetch/content-type/response.window.js.ini b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
index 90e05275883..bcbdd9595a0 100644
--- a/tests/wpt/metadata/fetch/content-type/response.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/response.window.js.ini
@@ -312,9 +312,6 @@
   [fetch(): separate response Content-Type: text/plain ]
     expected: NOTRUN
 
-  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/html */*;charset=gbk]
     expected: FAIL
 
@@ -324,9 +321,15 @@
   [<iframe>: combined response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: */* text/html]
+  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
     expected: FAIL
 
-  [<iframe>: combined response Content-Type: text/html */*]
+  [<iframe>: separate response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html */*]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: 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 b2ffc8abf78..258fe374697 100644
--- a/tests/wpt/metadata/fetch/content-type/script.window.js.ini
+++ b/tests/wpt/metadata/fetch/content-type/script.window.js.ini
@@ -56,6 +56,6 @@
   [separate text/javascript x/x]
     expected: FAIL
 
-  [separate text/javascript error]
+  [separate text/javascript ]
     expected: FAIL
 
diff --git a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
index 30e1b851fd4..fb0ce3ea7db 100644
--- a/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
+++ b/tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini
@@ -11,3 +11,9 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
+  [X-Content-Type-Options%3A%20%22nosniFF%22]
+    expected: FAIL
+
+  [X-Content-Type-Options%3A%0D%0AX-Content-Type-Options%3A%20nosniff]
+    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
deleted file mode 100644
index 87b07c3e670..00000000000
--- a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_1.html.ini
+++ /dev/null
@@ -1,4 +0,0 @@
-[traverse_the_history_1.html]
-  [Multiple history traversals from the same task]
-    expected: FAIL
-
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
new file mode 100644
index 00000000000..75d75b4cda2
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_2.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_2.html]
+  [Multiple history traversals, last would be aborted]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
new file mode 100644
index 00000000000..385376c7321
--- /dev/null
+++ b/tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_4.html.ini
@@ -0,0 +1,4 @@
+[traverse_the_history_4.html]
+  [Multiple history traversals, last would be aborted]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html.ini b/tests/wpt/metadata/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html.ini
new file mode 100644
index 00000000000..df298d2ff50
--- /dev/null
+++ b/tests/wpt/metadata/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html.ini
@@ -0,0 +1,4 @@
+[2d.pattern.transform.identity.html]
+  [Canvas test: 2d.pattern.transform.identity]
+    expected: FAIL
+
diff --git a/tests/wpt/metadata/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html.ini b/tests/wpt/metadata/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html.ini
new file mode 100644
index 00000000000..95cd1994f01
--- /dev/null
+++ b/tests/wpt/metadata/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html.ini
@@ -0,0 +1,4 @@
+[2d.pattern.transform.infinity.html]
+  [Canvas test: 2d.pattern.transform.infinity]
+    expected: FAIL
+
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..2a166bb97b7 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini
@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_escaping-1.html]
   type: testharness
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-3.html.ini
index 5f60c78e73c..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: 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_nonescaping-1.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
index 963d4cd20ef..3f7e3e9544f 100644
--- a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
+++ b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini
@@ -1,6 +1,5 @@
 [iframe_sandbox_popups_nonescaping-1.html]
   type: testharness
-  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    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 d43f38b40cd..45d8be1c898 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: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
     expected: NOTRUN
 
diff --git a/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini b/tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini
index dc856a3d5a3..e440b1e38c6 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: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: FAIL
+    expected: NOTRUN
 
diff --git a/tests/wpt/metadata/webmessaging/with-ports/017.html.ini b/tests/wpt/metadata/webmessaging/with-ports/017.html.ini
new file mode 100644
index 00000000000..064cf47545b
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/with-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/webmessaging/without-ports/018.html.ini b/tests/wpt/metadata/webmessaging/without-ports/018.html.ini
new file mode 100644
index 00000000000..663a1f8fa30
--- /dev/null
+++ b/tests/wpt/metadata/webmessaging/without-ports/018.html.ini
@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-table-border-collapse-001.html b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-table-border-collapse-001.html
new file mode 100644
index 00000000000..a4413ee97ff
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/box-shadow-table-border-collapse-001.html
@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+
+  <meta charset="UTF-8">
+
+  <title>CSS Box-shadow Test: an HTML &lt;table&gt; with 'border-collapse: collapse'</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/#shadow-layers">
+  <link rel="match" href="reference/box-shadow-table-border-collapse-001-ref.html">
+  <link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
+
+  <!--
+
+  created: 2017
+  modified: May 23rd 2020
+
+  Bug 1050297: Box-shadow of a table disappears when its border-collapse is set to collapse
+  https://connect.microsoft.com/IE/Feedback/Details/1050297
+
+  Sky6t user page at wikipedia
+  https://en.wikipedia.org/wiki/User:Sky6t/sandbox#Tables
+
+  -->
+
+  <meta content="" name="flags">
+  <meta content="This test checks that 'box-shadow' applies to table element with 'border-collapse' set to 'collapse' as long as row borders do not have different border thicknesses. In this test, the left border of both table rows have the same thickness (30px) and the right border of both table rows have the same thickness (30px)." name="assert">
+
+  <style>
+  table
+    {
+      border: red solid 29px;
+      border-collapse: collapse;
+      box-shadow: 20px 20px darkgray;
+      color: orange;
+      font-family: Ahem;
+      font-size: 50px;
+      line-height: 1;
+      table-layout: fixed;
+      width: 160px;
+    }
+
+  tr
+    {
+      border-color: blue;
+      border-style: solid;
+    }
+
+  tr#top-row
+    {
+
+      border-width: 30px 30px 0px;
+    }
+
+  tr#bottom-row
+    {
+      border-width: 0px 30px 30px;
+    }
+
+  td
+    {
+      padding: 0;
+    }
+  </style>
+
+  <p>Test passes if there is a filled orange square with a thick blue border and if such square has a gray outer shadow at its bottom and at its right side.
+
+  <table>
+
+    <tr id="top-row"><td>1<td>2
+
+    <tr id="bottom-row"><td>3<td>4
+
+  </table>
diff --git a/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-table-border-collapse-001-ref.html b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-table-border-collapse-001-ref.html
new file mode 100644
index 00000000000..fb2734a7c1a
--- /dev/null
+++ b/tests/wpt/web-platform-tests/css/css-backgrounds/reference/box-shadow-table-border-collapse-001-ref.html
@@ -0,0 +1,22 @@
+<!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
+    {
+      background-color: orange;
+      border: blue solid 30px;
+      box-shadow: 20px 20px darkgray;
+      height: 100px;
+      width: 100px;
+    }
+  </style>
+
+    <p>Test passes if there is a filled orange square with a thick blue border and if such square has a gray outer shadow at its bottom and at its right side.
+
+  <div></div>
diff --git a/tests/wpt/web-platform-tests/document-policy/echo-policy.py b/tests/wpt/web-platform-tests/document-policy/echo-policy.py
index 52a2bf97124..2ad326dac72 100644
--- a/tests/wpt/web-platform-tests/document-policy/echo-policy.py
+++ b/tests/wpt/web-platform-tests/document-policy/echo-policy.py
@@ -4,25 +4,27 @@
 # policy.)
 import json
 
+from wptserve.utils import isomorphic_decode
+
 def main(request, response):
     msg = {}
-    headers = [('Content-Type', 'text/html')]
+    headers = [(b'Content-Type', b'text/html')]
 
-    srdp = request.headers.get('Sec-Required-Document-Policy')
+    srdp = request.headers.get(b'Sec-Required-Document-Policy')
     if srdp:
-      msg['requiredPolicy'] = srdp
-      headers.append(('Document-Policy', srdp))
+      msg[u'requiredPolicy'] = isomorphic_decode(srdp)
+      headers.append((b'Document-Policy', srdp))
 
-    frameId = request.GET.first('id',None)
+    frameId = request.GET.first(b'id',None)
     if frameId:
-      msg['id'] = frameId
+      msg[u'id'] = isomorphic_decode(frameId)
 
-    content = """<!DOCTYPE html>
+    content = u"""<!DOCTYPE html>
 <script>
 top.postMessage(%s, "*");
 </script>
 %s
-""" % (json.dumps(msg), srdp)
+""" % (json.dumps(msg), isomorphic_decode(srdp) if srdp != None else srdp)
 
-    return (200, 'OK'), headers, content
+    return (200, u'OK'), headers, content
 
diff --git a/tests/wpt/web-platform-tests/dom/nodes/Document-contentType/support/contenttype_setter.py b/tests/wpt/web-platform-tests/dom/nodes/Document-contentType/support/contenttype_setter.py
index 02eff653ccf..c4b1f8df27c 100644
--- a/tests/wpt/web-platform-tests/dom/nodes/Document-contentType/support/contenttype_setter.py
+++ b/tests/wpt/web-platform-tests/dom/nodes/Document-contentType/support/contenttype_setter.py
@@ -1,20 +1,20 @@
 def main(request, response):
-    type = request.GET.first("type", None)
-    subtype = request.GET.first("subtype", None)
+    type = request.GET.first(b"type", None)
+    subtype = request.GET.first(b"subtype", None)
     if type and subtype:
-        response.headers["Content-Type"] = type + "/" + subtype
+        response.headers[b"Content-Type"] = type + b"/" + subtype
 
-    removeContentType = request.GET.first("removeContentType", None)
+    removeContentType = request.GET.first(b"removeContentType", None)
     if removeContentType:
         try:
-            del response.headers["Content-Type"]
+            del response.headers[b"Content-Type"]
         except KeyError:
             pass
 
-    content = '<head>'
-    mimeHead = request.GET.first("mime", None);
+    content = b'<head>'
+    mimeHead = request.GET.first(b"mime", None);
     if mimeHead:
-        content += '<meta http-equiv="Content-Type" content="%s; charset=utf-8"/>' % mimeHead
-    content += "</head>"
+        content += b'<meta http-equiv="Content-Type" content="%s; charset=utf-8"/>' % mimeHead
+    content += b"</head>"
 
     return content
diff --git a/tests/wpt/web-platform-tests/dom/nodes/Document-createElement-namespace-tests/generate.py b/tests/wpt/web-platform-tests/dom/nodes/Document-createElement-namespace-tests/generate.py
index 811413dbe2d..a0bca546c75 100755
--- a/tests/wpt/web-platform-tests/dom/nodes/Document-createElement-namespace-tests/generate.py
+++ b/tests/wpt/web-platform-tests/dom/nodes/Document-createElement-namespace-tests/generate.py
@@ -5,25 +5,25 @@ from __future__ import print_function
 import os
 import sys
 
-THIS_NAME = "generate.py"
+THIS_NAME = u"generate.py"
 
 # Note: these lists must be kept in sync with the lists in
 # Document-createElement-namespace.html, and this script must be run whenever
 # the lists are updated.  (We could keep the lists in a shared JSON file, but
 # seems like too much effort.)
 FILES = (
-    ("empty", ""),
-    ("minimal_html", "<!doctype html><title></title>"),
+    (u"empty", u""),
+    (u"minimal_html", u"<!doctype html><title></title>"),
 
-    ("xhtml", '<html xmlns="http://www.w3.org/1999/xhtml"></html>'),
-    ("svg", '<svg xmlns="http://www.w3.org/2000/svg"></svg>'),
-    ("mathml", '<mathml xmlns="http://www.w3.org/1998/Math/MathML"></mathml>'),
+    (u"xhtml", u'<html xmlns="http://www.w3.org/1999/xhtml"></html>'),
+    (u"svg", u'<svg xmlns="http://www.w3.org/2000/svg"></svg>'),
+    (u"mathml", u'<mathml xmlns="http://www.w3.org/1998/Math/MathML"></mathml>'),
 
-    ("bare_xhtml", "<html></html>"),
-    ("bare_svg", "<svg></svg>"),
-    ("bare_mathml", "<math></math>"),
+    (u"bare_xhtml", u"<html></html>"),
+    (u"bare_svg", u"<svg></svg>"),
+    (u"bare_mathml", u"<math></math>"),
 
-    ("xhtml_ns_removed", """\
+    (u"xhtml_ns_removed", u"""\
 <html xmlns="http://www.w3.org/1999/xhtml">
   <head><script>
     var newRoot = document.createElementNS(null, "html");
@@ -32,7 +32,7 @@ FILES = (
   </script></head>
 </html>
 """),
-    ("xhtml_ns_changed", """\
+    (u"xhtml_ns_changed", u"""\
 <html xmlns="http://www.w3.org/1999/xhtml">
   <head><script>
     var newRoot = document.createElementNS("http://www.w3.org/2000/svg", "abc");
@@ -44,36 +44,36 @@ FILES = (
 )
 
 EXTENSIONS = (
-    "html",
-    "xhtml",
-    "xml",
-    "svg",
+    u"html",
+    u"xhtml",
+    u"xml",
+    u"svg",
     # Was not able to get server MIME type working properly :(
     #"mml",
 )
 
 def __main__():
     if len(sys.argv) > 1:
-        print("No arguments expected, aborting")
+        print(u"No arguments expected, aborting")
         return
 
     if not os.access(THIS_NAME, os.F_OK):
-        print("Must be run from the directory of " + THIS_NAME + ", aborting")
+        print(u"Must be run from the directory of " + THIS_NAME + u", aborting")
         return
 
-    for name in os.listdir("."):
+    for name in os.listdir(u"."):
         if name == THIS_NAME:
             continue
         os.remove(name)
 
-    manifest = open("MANIFEST", "w")
+    manifest = open(u"MANIFEST", u"w")
 
     for name, contents in FILES:
         for extension in EXTENSIONS:
-            f = open(name + "." + extension, "w")
+            f = open(name + u"." + extension, u"w")
             f.write(contents)
             f.close()
-            manifest.write("support " + name + "." + extension + "\n")
+            manifest.write(u"support " + name + u"." + extension + u"\n")
 
     manifest.close()
 
diff --git a/tests/wpt/web-platform-tests/dom/nodes/encoding.py b/tests/wpt/web-platform-tests/dom/nodes/encoding.py
index 5f889e8db2a..281aa0bce49 100644
--- a/tests/wpt/web-platform-tests/dom/nodes/encoding.py
+++ b/tests/wpt/web-platform-tests/dom/nodes/encoding.py
@@ -1,5 +1,10 @@
-from cgi import escape
+try:
+    from cgi import escape
+except ImportError:
+    from html import escape
+
+from wptserve.utils import isomorphic_decode
 
 def main(request, response):
-    label = request.GET.first('label')
-    return """<!doctype html><meta charset="%s">""" % escape(label)
+    label = request.GET.first(b'label')
+    return u"""<!doctype html><meta charset="%s">""" % escape(isomorphic_decode(label))
diff --git a/tests/wpt/web-platform-tests/feature-policy/feature-policy-header-policy-disallowed-for-all.https.sub.html b/tests/wpt/web-platform-tests/feature-policy/feature-policy-header-policy-disallowed-for-all.https.sub.html
index 9a0f483ce44..971af0fa070 100644
--- a/tests/wpt/web-platform-tests/feature-policy/feature-policy-header-policy-disallowed-for-all.https.sub.html
+++ b/tests/wpt/web-platform-tests/feature-policy/feature-policy-header-policy-disallowed-for-all.https.sub.html
@@ -17,6 +17,7 @@
     assert_array_equals(
       document.featurePolicy.getAllowlistForFeature('fullscreen'),
       []);
+    assert_false(document.fullscreenEnabled, "fullscreenEnabled should reflect feature policy properly");
   }, header_policy + ' -- test allowlist is []');
 
   // Test that fullscreen is disallowed on all subframes.
diff --git a/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html b/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html
new file mode 100644
index 00000000000..56a44df86bd
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.identity.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.pattern.transform.identity</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.pattern.transform.identity</h1>
+<p class="desc"></p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+<p class="output expectedtext">Expected output:<p><img src="/images/green-100x50.png" class="output expected" id="expected" alt="">
+<ul id="d"></ul>
+<script>
+var t = async_test("");
+_addTest(function(canvas, ctx) {
+
+var canvas2 = document.createElement('canvas');
+canvas2.width = 100;
+canvas2.height = 50;
+var pattern = ctx.createPattern(canvas2, 'no-repeat');
+pattern.setTransform(new DOMMatrix());
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.fillStyle = pattern;
+ctx.fillRect(0, 0, 100, 50);
+
+_assertPixel(canvas, 1,1, 0,255,0,255, "1,1", "0,255,0,255");
+_assertPixel(canvas, 98,1, 0,255,0,255, "98,1", "0,255,0,255");
+_assertPixel(canvas, 1,48, 0,255,0,255, "1,48", "0,255,0,255");
+_assertPixel(canvas, 98,48, 0,255,0,255, "98,48", "0,255,0,255");
+
+
+});
+</script>
+
diff --git a/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html b/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html
new file mode 100644
index 00000000000..d298d70c350
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.infinity.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.pattern.transform.infinity</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.pattern.transform.infinity</h1>
+<p class="desc"></p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+<p class="output expectedtext">Expected output:<p><img src="/images/green-100x50.png" class="output expected" id="expected" alt="">
+<ul id="d"></ul>
+<script>
+var t = async_test("");
+_addTest(function(canvas, ctx) {
+
+var canvas2 = document.createElement('canvas');
+canvas2.width = 100;
+canvas2.height = 50;
+var pattern = ctx.createPattern(canvas2, 'no-repeat');
+pattern.setTransform({a: Infinity});
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.fillStyle = '#f00';
+ctx.fillStyle = pattern;
+ctx.fillRect(0, 0, 100, 50);
+
+_assertPixel(canvas, 1,1, 0,255,0,255, "1,1", "0,255,0,255");
+_assertPixel(canvas, 98,1, 0,255,0,255, "98,1", "0,255,0,255");
+_assertPixel(canvas, 1,48, 0,255,0,255, "1,48", "0,255,0,255");
+_assertPixel(canvas, 98,48, 0,255,0,255, "98,48", "0,255,0,255");
+
+
+});
+</script>
+
diff --git a/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.invalid.html b/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.invalid.html
new file mode 100644
index 00000000000..ebd2801241c
--- /dev/null
+++ b/tests/wpt/web-platform-tests/html/canvas/element/fill-and-stroke-styles/2d.pattern.transform.invalid.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.pattern.transform.invalid</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.pattern.transform.invalid</h1>
+<p class="desc"></p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+
+<ul id="d"></ul>
+<script>
+var t = async_test("");
+_addTest(function(canvas, ctx) {
+
+var canvas2 = document.createElement('canvas');
+canvas2.width = 100;
+canvas2.height = 50;
+var pattern = ctx.createPattern(canvas2, 'no-repeat');
+assert_throws_js(TypeError, function() { pattern.setTransform({a: 1, m11: 2}); });
+
+
+});
+</script>
+
diff --git a/tests/wpt/web-platform-tests/html/canvas/tools/spec.yaml b/tests/wpt/web-platform-tests/html/canvas/tools/spec.yaml
index be86c7fb6e1..d4b1840a69f 100644
--- a/tests/wpt/web-platform-tests/html/canvas/tools/spec.yaml
+++ b/tests/wpt/web-platform-tests/html/canvas/tools/spec.yaml
@@ -269,6 +269,8 @@ assertions:
 
   - id: 2d.pattern.modify
     text: "Modifying this image after calling the createPattern() method *must* not affect the pattern<^>."
+  - id: 2d.pattern.transform
+    text: "The setTransform(transform) method, when invoked, must run these steps:"
   - id: 2d.pattern.missing
     text: "If the empty string is specified, repeat *must* be assumed<^>."
   - id: 2d.pattern.unrecognised
diff --git a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/fill-and-stroke-styles.yaml b/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/fill-and-stroke-styles.yaml
index 1483cadd442..d05ae0911bd 100644
--- a/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/fill-and-stroke-styles.yaml
+++ b/tests/wpt/web-platform-tests/html/canvas/tools/yaml/element/fill-and-stroke-styles.yaml
@@ -1284,6 +1284,60 @@
     @assert pixel 98,48 == 0,255,0,255;
   expected: green
 
+- name: 2d.pattern.transform.identity
+  testing:
+  - 2d.pattern.transform
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    pattern.setTransform(new DOMMatrix());
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.transform.infinity
+  testing:
+  - 2d.pattern.transform
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    pattern.setTransform({a: Infinity});
+
+    ctx.fillStyle = '#0f0';
+    ctx.fillRect(0, 0, 100, 50);
+    ctx.fillStyle = '#f00';
+    ctx.fillStyle = pattern;
+    ctx.fillRect(0, 0, 100, 50);
+
+    @assert pixel 1,1 == 0,255,0,255;
+    @assert pixel 98,1 == 0,255,0,255;
+    @assert pixel 1,48 == 0,255,0,255;
+    @assert pixel 98,48 == 0,255,0,255;
+  expected: green
+
+- name: 2d.pattern.transform.invalid
+  testing:
+  - 2d.pattern.transform
+  code: |
+    var canvas2 = document.createElement('canvas');
+    canvas2.width = 100;
+    canvas2.height = 50;
+    var pattern = ctx.createPattern(canvas2, 'no-repeat');
+    @assert throws TypeError pattern.setTransform({a: 1, m11: 2});
+
 - name: 2d.pattern.image.undefined
   testing:
   - 2d.pattern.IDL
diff --git a/tests/wpt/web-platform-tests/import-maps/common/tools/format_json.py b/tests/wpt/web-platform-tests/import-maps/common/tools/format_json.py
index 2808a37906e..1059ac793aa 100644
--- a/tests/wpt/web-platform-tests/import-maps/common/tools/format_json.py
+++ b/tests/wpt/web-platform-tests/import-maps/common/tools/format_json.py
@@ -15,10 +15,10 @@ def main():
         print filename
         try:
             spec = json.load(
-                open(filename, 'r'), object_pairs_hook=collections.OrderedDict)
-            with open(filename, 'w') as f:
-                f.write(json.dumps(spec, indent=2, separators=(',', ': ')))
-                f.write('\n')
+                open(filename, u'r'), object_pairs_hook=collections.OrderedDict)
+            with open(filename, u'w') as f:
+                f.write(json.dumps(spec, indent=2, separators=(u',', u': ')))
+                f.write(u'\n')
         except:
             traceback.print_exc()
 
diff --git a/tests/wpt/web-platform-tests/import-maps/core/static-import.py b/tests/wpt/web-platform-tests/import-maps/core/static-import.py
index 8d0f5d9f420..68583be13c4 100644
--- a/tests/wpt/web-platform-tests/import-maps/core/static-import.py
+++ b/tests/wpt/web-platform-tests/import-maps/core/static-import.py
@@ -1,5 +1,7 @@
+from wptserve.utils import isomorphic_decode
+
 def main(request, response):
     return (
-        (('Content-Type', 'text/javascript'),),
-        'import "{}";\n'.format(request.GET.first('url'))
+        ((b'Content-Type', b'text/javascript'),),
+        u'import "{}";\n'.format(isomorphic_decode(request.GET.first(b'url')))
     )
diff --git a/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/reftest/reftest_mismatch_fail-print.html.ini b/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/reftest/reftest_mismatch_fail-print.html.ini
new file mode 100644
index 00000000000..4520f4cbb11
--- /dev/null
+++ b/tests/wpt/web-platform-tests/infrastructure/metadata/infrastructure/reftest/reftest_mismatch_fail-print.html.ini
@@ -0,0 +1,2 @@
+[reftest_mismatch_fail-print.html]
+  expected: FAIL
diff --git a/tests/wpt/web-platform-tests/infrastructure/reftest/reftest_mismatch-print.html b/tests/wpt/web-platform-tests/infrastructure/reftest/reftest_mismatch-print.html
new file mode 100644
index 00000000000..5fd4a7f52a8
--- /dev/null
+++ b/tests/wpt/web-platform-tests/infrastructure/reftest/reftest_mismatch-print.html
@@ -0,0 +1,13 @@
+<title>rel=mismatch that should PASS</title>
+<link rel=mismatch href=reftest_match-print-ref.html>
+<meta name="reftest-pages" content="reftest_match-print-ref.html:1-2">
+<style>
+* {margin: 0; padding:0}
+div {page-break-after: always;}
+</style>
+<div>
+page 1
+</div>
+<div>
+page 3
+</div>
diff --git a/tests/wpt/web-platform-tests/infrastructure/reftest/reftest_mismatch_fail-print.html b/tests/wpt/web-platform-tests/infrastructure/reftest/reftest_mismatch_fail-print.html
new file mode 100644
index 00000000000..afec2ef51f3
--- /dev/null
+++ b/tests/wpt/web-platform-tests/infrastructure/reftest/reftest_mismatch_fail-print.html
@@ -0,0 +1,13 @@
+<title>rel=mismatch that should FAIL</title>
+<link rel=mismatch href=reftest_match-print-ref.html>
+<meta name="reftest-pages" content="reftest_match-print-ref.html:1-2">
+<style>
+* {margin: 0; padding:0}
+div {page-break-after: always;}
+</style>
+<div>
+page 1
+</div>
+<div>
+page 2
+</div>
diff --git a/tests/wpt/web-platform-tests/layout-instability/idlharness.html b/tests/wpt/web-platform-tests/layout-instability/idlharness.html
index a3b2d1e1c63..ea6efb27f8f 100644
--- a/tests/wpt/web-platform-tests/layout-instability/idlharness.html
+++ b/tests/wpt/web-platform-tests/layout-instability/idlharness.html
@@ -6,6 +6,7 @@
 <script src="/resources/testharnessreport.js"></script>
 <script src="/resources/WebIDLParser.js"></script>
 <script src="/resources/idlharness.js"></script>
+<script src="resources/util.js"></script>
 <script>
 'use strict';
 
@@ -27,6 +28,10 @@ idl_test(
       return;
     }
 
+    // Make sure that the image has initially been laid out, so that the movement
+    // later is counted as a layout shift.
+    await waitForAnimationFrames(2);
+
     self.layoutShift = await new Promise((resolve, reject) => {
       const observer = new PerformanceObserver(entryList => {
         resolve(entryList.getEntries()[0]);
diff --git a/tests/wpt/web-platform-tests/tools/manifest/item.py b/tests/wpt/web-platform-tests/tools/manifest/item.py
index 5528e0995a8..e232925ed63 100644
--- a/tests/wpt/web-platform-tests/tools/manifest/item.py
+++ b/tests/wpt/web-platform-tests/tools/manifest/item.py
@@ -21,6 +21,7 @@ if MYPY:
     from typing import Hashable
     from .manifest import Manifest
     Fuzzy = Dict[Optional[Tuple[Text, Text, Text]], List[int]]
+    PageRanges = Dict[Text, List[int]]
 
 item_types = {}  # type: Dict[str, Type[ManifestItem]]
 
@@ -307,6 +308,17 @@ class PrintRefTest(RefTest):
 
     item_type = "print-reftest"
 
+    @property
+    def page_ranges(self):
+        # type: () -> PageRanges
+        return self._extras.get("page_ranges", {})
+
+    def to_json(self):  # type: ignore
+        rv = super(PrintRefTest, self).to_json()
+        if self.page_ranges:
+            rv[-1]["page_ranges"] = self.page_ranges
+        return rv
+
 
 class ManualTest(URLManifestItem):
     __slots__ = ()
diff --git a/tests/wpt/web-platform-tests/tools/manifest/sourcefile.py b/tests/wpt/web-platform-tests/tools/manifest/sourcefile.py
index 2a35400afe4..524eb0bddb2 100644
--- a/tests/wpt/web-platform-tests/tools/manifest/sourcefile.py
+++ b/tests/wpt/web-platform-tests/tools/manifest/sourcefile.py
@@ -414,7 +414,8 @@ class SourceFile(object):
     @property
     def name_is_crashtest(self):
         # type: () -> bool
-        return self.type_flag == "crash" or "crashtests" in self.dir_path.split(os.path.sep)
+        return (self.markup_type is not None and
+                (self.type_flag == "crash" or "crashtests" in self.dir_path.split(os.path.sep)))
 
     @property
     def name_is_tentative(self):
@@ -428,7 +429,8 @@ class SourceFile(object):
     @property
     def name_is_print_reftest(self):
         # type: () -> bool
-        return self.type_flag == "print" or "print" in self.dir_path.split(os.path.sep)
+        return (self.markup_type is not None and
+                (self.type_flag == "print" or "print" in self.dir_path.split(os.path.sep)))
 
     @property
     def markup_type(self):
@@ -552,6 +554,29 @@ class SourceFile(object):
 
         return self.dpi_nodes[0].attrib.get("content", None)
 
+    def parse_ref_keyed_meta(self, node):
+        # type: (ElementTree.Element) -> Tuple[Optional[Tuple[Text, Text, Text]], Text]
+        item = node.attrib.get(u"content", u"")  # type: Text
+
+        parts = item.rsplit(u":", 1)
+        if len(parts) == 1:
+            key = None  # type: Optional[Tuple[Text, Text, Text]]
+            value = parts[0]
+        else:
+            key_part = urljoin(self.url, parts[0])
+            reftype = None
+            for ref in self.references:  # type: Tuple[Text, Text]
+                if ref[0] == key_part:
+                    reftype = ref[1]
+                    break
+            if reftype not in (u"==", u"!="):
+                raise ValueError("Key %s doesn't correspond to a reference" % key_part)
+            key = (self.url, key_part, reftype)
+            value = parts[1]
+
+        return key, value
+
+
     @cached_property
     def fuzzy_nodes(self):
         # type: () -> List[ElementTree.Element]
@@ -560,6 +585,7 @@ class SourceFile(object):
         assert self.root is not None
         return self.root.findall(".//{http://www.w3.org/1999/xhtml}meta[@name='fuzzy']")
 
+
     @cached_property
     def fuzzy(self):
         # type: () -> Dict[Optional[Tuple[Text, Text, Text]], List[List[int]]]
@@ -573,26 +599,10 @@ class SourceFile(object):
         args = [u"maxDifference", u"totalPixels"]
 
         for node in self.fuzzy_nodes:
-            item = node.attrib.get(u"content", u"")  # type: Text
-
-            parts = item.rsplit(u":", 1)
-            if len(parts) == 1:
-                key = None  # type: Optional[Tuple[Text, Text, Text]]
-                value = parts[0]
-            else:
-                key_part = urljoin(self.url, parts[0])
-                reftype = None
-                for ref in self.references:  # type: Tuple[Text, Text]
-                    if ref[0] == key_part:
-                        reftype = ref[1]
-                        break
-                if reftype not in (u"==", u"!="):
-                    raise ValueError("Fuzzy key %s doesn't correspond to a references" % key_part)
-                key = (self.url, key_part, reftype)
-                value = parts[1]
+            key, value = self.parse_ref_keyed_meta(node)
             ranges = value.split(u";")
             if len(ranges) != 2:
-                raise ValueError("Malformed fuzzy value %s" % item)
+                raise ValueError("Malformed fuzzy value %s" % value)
             arg_values = {}  # type: Dict[Text, List[int]]
             positional_args = deque()  # type: Deque[List[int]]
             for range_str_value in ranges:  # type: Text
@@ -628,6 +638,48 @@ class SourceFile(object):
             assert len(arg_values) == 0 and len(positional_args) == 0
         return rv
 
+    @cached_property
+    def page_ranges_nodes(self):
+        # type: () -> List[ElementTree.Element]
+        """List of ElementTree Elements corresponding to nodes in a test that
+        specify print-reftest """
+        assert self.root is not None
+        return self.root.findall(".//{http://www.w3.org/1999/xhtml}meta[@name='reftest-pages']")
+
+    @cached_property
+    def page_ranges(self):
+        # type: () -> Dict[Text, List[List[Optional[int]]]]
+        """List of ElementTree Elements corresponding to nodes in a test that
+        specify print-reftest page ranges"""
+        rv = {}  # type: Dict[Text, List[List[Optional[int]]]]
+        for node in self.page_ranges_nodes:
+            key_data, value = self.parse_ref_keyed_meta(node)
+            # Just key by url
+            if key_data is None:
+                key = self.url
+            else:
+                key = key_data[1]
+            if key in rv:
+                raise ValueError("Duplicate page-ranges value")
+            rv[key] = []
+            for range_str in value.split(","):
+                range_str = range_str.strip()
+                if "-" in range_str:
+                    range_parts_str = [item.strip() for item in range_str.split("-")]
+                    try:
+                        range_parts = [int(item) if item else None for item in range_parts_str]
+                    except ValueError:
+                        raise ValueError("Malformed page-range value %s" % range_str)
+                    if any(item == 0 for item in range_parts):
+                        raise ValueError("Malformed page-range value %s" % range_str)
+                else:
+                    try:
+                        range_parts = [int(range_str)]
+                    except ValueError:
+                        raise ValueError("Malformed page-range value %s" % range_str)
+                rv[key].append(range_parts)
+        return rv
+
     @cached_property
     def testharness_nodes(self):
         # type: () -> List[ElementTree.Element]
@@ -908,6 +960,7 @@ class SourceFile(object):
                     timeout=self.timeout,
                     viewport_size=self.viewport_size,
                     fuzzy=self.fuzzy,
+                    page_ranges=self.page_ranges,
                 )]
 
         elif self.name_is_multi_global:
diff --git a/tests/wpt/web-platform-tests/tools/manifest/tests/test_sourcefile.py b/tests/wpt/web-platform-tests/tools/manifest/tests/test_sourcefile.py
index 301c624b06d..b4ba4638708 100644
--- a/tests/wpt/web-platform-tests/tools/manifest/tests/test_sourcefile.py
+++ b/tests/wpt/web-platform-tests/tools/manifest/tests/test_sourcefile.py
@@ -876,6 +876,35 @@ def test_reftest_fuzzy_multi(fuzzy, expected):
     assert s.fuzzy == expected
 
 
+@pytest.mark.parametrize("page_ranges, expected", [
+    (b"1-2", [[1, 2]]),
+    (b"1-1,3-4", [[1, 1], [3, 4]]),
+    (b"1,3", [[1], [3]]),
+    (b"2-", [[2, None]]),
+    (b"-2", [[None, 2]]),
+    (b"-2,2-", [[None, 2], [2, None]]),
+    (b"1,6-7,8", [[1], [6, 7], [8]])])
+def test_page_ranges(page_ranges, expected):
+    content = b"""<link rel=match href=ref.html>
+<meta name=reftest-pages content="%s">
+""" % page_ranges
+
+    s = create("foo/test-print.html", content)
+
+    assert s.page_ranges == {"/foo/test-print.html": expected}
+
+
+@pytest.mark.parametrize("page_ranges", [b"a", b"1-a", b"1=2", b"1-2:2-3"])
+def test_page_ranges_invalid(page_ranges):
+    content = b"""<link rel=match href=ref.html>
+<meta name=reftest-pages content="%s">
+""" % page_ranges
+
+    s = create("foo/test-print.html", content)
+    with pytest.raises(ValueError):
+        s.page_ranges
+
+
 def test_hash():
     s = SourceFile("/", "foo", "/", contents=b"Hello, World!")
     assert "b45ef6fec89518d314f546fd6c3025367b721684" == s.hash
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox.py
index f36b4298970..8ffe82c662b 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/browsers/firefox.py
@@ -117,7 +117,7 @@ def executor_kwargs(test_type, server_config, cache_manager, run_info_data,
     capabilities = {}
     if test_type == "testharness":
         capabilities["pageLoadStrategy"] = "eager"
-    if test_type == "reftest":
+    if test_type in ("reftest", "print-reftest"):
         executor_kwargs["reftest_internal"] = kwargs["reftest_internal"]
         executor_kwargs["reftest_screenshot"] = kwargs["reftest_screenshot"]
     if test_type == "wdspec":
@@ -592,9 +592,12 @@ class ProfileCreator(object):
         if self.enable_fission:
             profile.set_preferences({"fission.autostart": True})
 
-        if self.test_type == "reftest":
+        if self.test_type in ("reftest", "print-reftest"):
             profile.set_preferences({"layout.interruptible-reflow.enabled": False})
 
+        if self.test_type == "print-reftest":
+            profile.set_preferences({"print.always_print_silent": True})
+
         # Bug 1262954: winxp + e10s, disable hwaccel
         if (self.e10s and platform.system() in ("Windows", "Microsoft") and
             "5.1" in platform.version()):
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py
index d803141b08d..82496fcad9c 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/base.py
@@ -105,8 +105,7 @@ def _ensure_hash_in_reftest_screenshots(extra):
 def get_pages(ranges_value, total_pages):
     """Get a set of page numbers to include in a print reftest.
 
-    :param ranges_value: String containing the range specifier from a meta element
-                         e.g. "1-2,4,6-"
+    :param ranges_value: Parsed page ranges as a list e.g. [[1,2], [4], [6,None]]
     :param total_pages: Integer total number of pages in the paginated output.
     :retval: Set containing integer page numbers to include in the comparison e.g.
              for the example ranges value and 10 total pages this would be
@@ -114,36 +113,20 @@ def get_pages(ranges_value, total_pages):
     if not ranges_value:
         return set(range(1, total_pages + 1))
 
-    range_parts = [item.strip() for item in ranges_value.split(",")]
-
     rv = set()
-    for range_part in range_parts:
-        if "-" not in range_part:
-            try:
-                part = int(range_part)
-            except ValueError:
-                raise ValueError("Page ranges must be either <int> or <int> '-' <int> (found %s)" % range_part)
-            if part <= total_pages:
-                rv.add(part)
-        else:
-            parts = [item.strip() for item in range_part.split("-")]
-            if len(parts) != 2:
-                raise ValueError("Page ranges must be either <int> or <int> '-' <int> (found %s)" % range_part)
-            range_limits = []
-            for part in parts:
-                if part:
-                    try:
-                        range_limits.append(int(part))
-                    except ValueError:
-                        raise ValueError("Page ranges must be either <int> or <int> '-' <int> (found %s)" % range_part)
-                else:
-                    if range_limits:
-                        range_limits.append(total_pages)
-                    else:
-                        range_limits.append(1)
-            if range_limits[0] > total_pages:
-                continue
-            rv |= set(range(range_limits[0], range_limits[1] + 1))
+
+    for range_limits in ranges_value:
+        if len(range_limits) == 1:
+            range_limits = [range_limits[0], range_limits[0]]
+
+        if range_limits[0] is None:
+            range_limits[0] = 1
+        if range_limits[1] is None:
+            range_limits[1] = total_pages
+
+        if range_limits[0] > total_pages:
+            continue
+        rv |= set(range(range_limits[0], range_limits[1] + 1))
     return rv
 
 
@@ -359,6 +342,7 @@ class TestharnessExecutor(TestExecutor):
 
 class RefTestExecutor(TestExecutor):
     convert_result = reftest_result_converter
+    is_print = False
 
     def __init__(self, logger, browser, server_config, timeout_multiplier=1, screenshot_cache=None,
                  debug_info=None, **kwargs):
@@ -375,6 +359,7 @@ class CrashtestExecutor(TestExecutor):
 
 class PrintRefTestExecutor(TestExecutor):
     convert_result = reftest_result_converter
+    is_print = True
 
 
 class RefTestImplementation(object):
@@ -398,11 +383,11 @@ class RefTestImplementation(object):
     def logger(self):
         return self.executor.logger
 
-    def get_hash(self, test, viewport_size, dpi):
+    def get_hash(self, test, viewport_size, dpi, page_ranges):
         key = (test.url, viewport_size, dpi)
 
         if key not in self.screenshot_cache:
-            success, data = self.get_screenshot_list(test, viewport_size, dpi)
+            success, data = self.get_screenshot_list(test, viewport_size, dpi, page_ranges)
 
             if not success:
                 return False, data
@@ -498,8 +483,10 @@ class RefTestImplementation(object):
     def run_test(self, test):
         viewport_size = test.viewport_size
         dpi = test.dpi
+        page_ranges = test.page_ranges
         self.message = []
 
+
         # Depth-first search of reference tree, with the goal
         # of reachings a leaf node with only pass results
 
@@ -514,7 +501,7 @@ class RefTestImplementation(object):
             fuzzy = self.get_fuzzy(test, nodes, relation)
 
             for i, node in enumerate(nodes):
-                success, data = self.get_hash(node, viewport_size, dpi)
+                success, data = self.get_hash(node, viewport_size, dpi, page_ranges)
                 if success is False:
                     return {"status": data[0], "message": data[1]}
 
@@ -538,7 +525,7 @@ class RefTestImplementation(object):
             page_idx = -1
         for i, (node, screenshot) in enumerate(zip(nodes, screenshots)):
             if screenshot is None:
-                success, screenshot = self.retake_screenshot(node, viewport_size, dpi)
+                success, screenshot = self.retake_screenshot(node, viewport_size, dpi, page_ranges)
                 if success:
                     screenshots[i] = screenshot
 
@@ -575,8 +562,11 @@ class RefTestImplementation(object):
                 break
         return value
 
-    def retake_screenshot(self, node, viewport_size, dpi):
-        success, data = self.get_screenshot_list(node, viewport_size, dpi)
+    def retake_screenshot(self, node, viewport_size, dpi, page_ranges):
+        success, data = self.get_screenshot_list(node,
+                                                 viewport_size,
+                                                 dpi,
+                                                 page_ranges)
         if not success:
             return False, data
 
@@ -585,8 +575,8 @@ class RefTestImplementation(object):
         self.screenshot_cache[key] = hash_val, data
         return True, data
 
-    def get_screenshot_list(self, node, viewport_size, dpi):
-        success, data = self.executor.screenshot(node, viewport_size, dpi)
+    def get_screenshot_list(self, node, viewport_size, dpi, page_ranges):
+        success, data = self.executor.screenshot(node, viewport_size, dpi, page_ranges)
         if success and not isinstance(data, list):
             return success, [data]
         return success, data
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorchrome.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorchrome.py
index 9c3aad3f64a..3ae318795f0 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorchrome.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorchrome.py
@@ -31,11 +31,6 @@ class ChromeDriverPrintProtocolPart(PrintProtocolPart):
         self.runner_handle = self.webdriver.window_handle
 
     def render_as_pdf(self, width, height):
-        page_ranges = self.webdriver.execute_script(
-            """
-let elem = document.querySelector("meta[name=reftest-pages]");
-return elem ? elem.content : null;
-""")
         margin = 0.5
         body = {
             "cmd": "Page.printToPDF",
@@ -51,8 +46,7 @@ return elem ? elem.content : null;
                 "printBackground": True,
             }
         }
-        return (self.webdriver.send_session_command("POST", "goog/cdp/execute", body=body)["data"],
-                page_ranges)
+        return self.webdriver.send_session_command("POST", "goog/cdp/execute", body=body)["data"]
 
     def pdf_to_png(self, pdf_base64, ranges):
         handle = self.webdriver.window_handle
@@ -82,7 +76,7 @@ class ChromeDriverPrintRefTestExecutor(WebDriverRefTestExecutor):
         with open(os.path.join(here, "reftest.js")) as f:
             self.script = f.read()
 
-    def screenshot(self, test, viewport_size, dpi):
+    def screenshot(self, test, viewport_size, dpi, page_ranges):
         # https://github.com/web-platform-tests/wpt/issues/7140
         assert dpi is None
 
@@ -92,6 +86,7 @@ class ChromeDriverPrintRefTestExecutor(WebDriverRefTestExecutor):
             self.has_window = True
 
         self.viewport_size = viewport_size
+        self.page_ranges = page_ranges.get(test.url)
         timeout = self.timeout_multiplier * test.timeout if self.debug_info is None else None
 
         test_url = self.test_url(test)
@@ -108,8 +103,8 @@ class ChromeDriverPrintRefTestExecutor(WebDriverRefTestExecutor):
 
         protocol.base.execute_script(self.wait_script, asynchronous=True)
 
-        pdf, page_ranges = protocol.pdf_print.render_as_pdf(*self.viewport_size)
-        screenshots = protocol.pdf_print.pdf_to_png(pdf, page_ranges)
+        pdf = protocol.pdf_print.render_as_pdf(*self.viewport_size)
+        screenshots = protocol.pdf_print.pdf_to_png(pdf, self.page_ranges)
         for i, screenshot in enumerate(screenshots):
             # strip off the data:img/png, part of the url
             if screenshot.startswith("data:image/png;base64,"):
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py
index 006c93fc06d..05223d374fe 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executormarionette.py
@@ -566,12 +566,6 @@ class MarionettePrintProtocolPart(PrintProtocolPart):
         self.runner_handle = self.marionette.current_window_handle
 
     def render_as_pdf(self, width, height):
-        page_ranges = self.marionette.execute_script(
-            """
-let elem = document.querySelector("meta[name=reftest-pages]");
-return elem ? elem.content : null;
-""",
-            new_sandbox=False, sandbox=None)
         margin = 0.5 * 2.54
         body = {
             "page": {
@@ -587,16 +581,16 @@ return elem ? elem.content : null;
             "shrinkToFit": False,
             "printBackground": True,
         }
-        return self.marionette._send_message("WebDriver:Print", body, key="value"), page_ranges
+        return self.marionette._send_message("WebDriver:Print", body, key="value")
 
-    def pdf_to_png(self, pdf_base64, ranges):
+    def pdf_to_png(self, pdf_base64, page_ranges):
         handle = self.marionette.current_window_handle
         self.marionette.switch_to_window(self.runner_handle)
         try:
             rv = self.marionette.execute_async_script("""
 let callback = arguments[arguments.length - 1];
 render('%s').then(result => callback(result))""" % pdf_base64, new_sandbox=False, sandbox=None)
-            page_numbers = get_pages(ranges, len(rv))
+            page_numbers = get_pages(page_ranges, len(rv))
             rv = [item for i, item in enumerate(rv) if i + 1 in page_numbers]
             return rv
         finally:
@@ -842,6 +836,8 @@ class MarionetteTestharnessExecutor(TestharnessExecutor):
 
 
 class MarionetteRefTestExecutor(RefTestExecutor):
+    is_print = False
+
     def __init__(self, logger, browser, server_config, timeout_multiplier=1,
                  screenshot_cache=None, close_after_done=True,
                  debug_info=None, reftest_internal=False,
@@ -933,7 +929,7 @@ class MarionetteRefTestExecutor(RefTestExecutor):
 
         return self.convert_result(test, result)
 
-    def screenshot(self, test, viewport_size, dpi):
+    def screenshot(self, test, viewport_size, dpi, page_ranges):
         # https://github.com/web-platform-tests/wpt/issues/7135
         assert viewport_size is None
         assert dpi is None
@@ -972,7 +968,7 @@ class InternalRefTestImplementation(RefTestImplementation):
         return self.executor.logger
 
     def setup(self, screenshot="unexpected"):
-        data = {"screenshot": screenshot}
+        data = {"screenshot": screenshot, "isPrint": self.executor.is_print}
         if self.executor.group_metadata is not None:
             data["urlCount"] = {urljoin(self.executor.server_url(key[0]), key[1]):value
                                 for key, value in iteritems(
@@ -995,7 +991,8 @@ class InternalRefTestImplementation(RefTestImplementation):
                                                               "expected": test.expected(),
                                                               "timeout": timeout,
                                                               "width": 800,
-                                                              "height": 600})["value"]
+                                                              "height": 600,
+                                                              "pageRanges": test.page_ranges})["value"]
         return rv
 
     def get_references(self, root_test, node):
@@ -1099,10 +1096,13 @@ class MarionetteCrashtestExecutor(CrashtestExecutor):
 
 
 class MarionettePrintRefTestExecutor(MarionetteRefTestExecutor):
+    is_print = True
+
     def __init__(self, logger, browser, server_config, timeout_multiplier=1,
                  screenshot_cache=None, close_after_done=True,
                  debug_info=None, reftest_screenshot="unexpected", ccov=False,
-                 group_metadata=None, capabilities=None, debug=False, **kwargs):
+                 group_metadata=None, capabilities=None, debug=False,
+                 reftest_internal=False, **kwargs):
         """Marionette-based executor for reftests"""
         MarionetteRefTestExecutor.__init__(self,
                                            logger,
@@ -1113,7 +1113,7 @@ class MarionettePrintRefTestExecutor(MarionetteRefTestExecutor):
                                            close_after_done=close_after_done,
                                            debug_info=debug_info,
                                            reftest_screenshot=reftest_screenshot,
-                                           reftest_internal=False,
+                                           reftest_internal=reftest_internal,
                                            ccov=ccov,
                                            group_metadata=group_metadata,
                                            capabilities=capabilities,
@@ -1122,9 +1122,14 @@ class MarionettePrintRefTestExecutor(MarionetteRefTestExecutor):
 
     def setup(self, runner):
         super(MarionettePrintRefTestExecutor, self).setup(runner)
-        self.protocol.pdf_print.load_runner()
+        if not isinstance(self.implementation, InternalRefTestImplementation):
+            self.protocol.pdf_print.load_runner()
 
-    def screenshot(self, test, viewport_size, dpi):
+    def get_implementation(self, reftest_internal):
+        return (InternalRefTestImplementation if reftest_internal
+                else RefTestImplementation)(self)
+
+    def screenshot(self, test, viewport_size, dpi, page_ranges):
         # https://github.com/web-platform-tests/wpt/issues/7140
         assert dpi is None
 
@@ -1132,6 +1137,7 @@ class MarionettePrintRefTestExecutor(MarionetteRefTestExecutor):
         timeout = self.timeout_multiplier * test.timeout if self.debug_info is None else None
 
         test_url = self.test_url(test)
+        self.page_ranges = page_ranges.get(test.url)
 
         return ExecuteAsyncScriptRun(self.logger,
                                      self._render,
@@ -1145,8 +1151,8 @@ class MarionettePrintRefTestExecutor(MarionetteRefTestExecutor):
 
         protocol.base.execute_script(self.wait_script, asynchronous=True)
 
-        pdf, page_ranges = protocol.pdf_print.render_as_pdf(*self.viewport_size)
-        screenshots = protocol.pdf_print.pdf_to_png(pdf, page_ranges)
+        pdf = protocol.pdf_print.render_as_pdf(*self.viewport_size)
+        screenshots = protocol.pdf_print.pdf_to_png(pdf, self.page_ranges)
         for i, screenshot in enumerate(screenshots):
             # strip off the data:img/png, part of the url
             if screenshot.startswith("data:image/png;base64,"):
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorselenium.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorselenium.py
index b12299c1ff1..ec7b8fcf189 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorselenium.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorselenium.py
@@ -413,7 +413,7 @@ class SeleniumRefTestExecutor(RefTestExecutor):
 
         return self.convert_result(test, result)
 
-    def screenshot(self, test, viewport_size, dpi):
+    def screenshot(self, test, viewport_size, dpi, page_ranges):
         # https://github.com/web-platform-tests/wpt/issues/7135
         assert viewport_size is None
         assert dpi is None
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorservo.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorservo.py
index 54b366485ef..efe93abc69c 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorservo.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorservo.py
@@ -209,7 +209,7 @@ class ServoRefTestExecutor(ProcessTestExecutor):
         os.rmdir(self.tempdir)
         ProcessTestExecutor.teardown(self)
 
-    def screenshot(self, test, viewport_size, dpi):
+    def screenshot(self, test, viewport_size, dpi, page_ranges):
         with TempFilename(self.tempdir) as output_path:
             extra_args = ["--exit",
                           "--output=%s" % output_path,
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorservodriver.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorservodriver.py
index 0680c4ed229..071b506f9af 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorservodriver.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorservodriver.py
@@ -260,7 +260,7 @@ class ServoWebDriverRefTestExecutor(RefTestExecutor):
             message += traceback.format_exc()
             return test.result_cls("INTERNAL-ERROR", message), []
 
-    def screenshot(self, test, viewport_size, dpi):
+    def screenshot(self, test, viewport_size, dpi, page_ranges):
         # https://github.com/web-platform-tests/wpt/issues/7135
         assert viewport_size is None
         assert dpi is None
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
index ea26fbcd20d..2b3d53d7445 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/executors/executorwebdriver.py
@@ -518,7 +518,7 @@ class WebDriverRefTestExecutor(RefTestExecutor):
 
         return self.convert_result(test, result)
 
-    def screenshot(self, test, viewport_size, dpi):
+    def screenshot(self, test, viewport_size, dpi, page_ranges):
         # https://github.com/web-platform-tests/wpt/issues/7135
         assert viewport_size is None
         assert dpi is None
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_executors.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_executors.py
index a00554e478f..3573683de39 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_executors.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/tests/test_executors.py
@@ -3,19 +3,13 @@ import pytest
 from ..executors import base
 
 @pytest.mark.parametrize("ranges_value, total_pages, expected", [
-    ("", 3, {1,2, 3}),
-    ("1-2", 3, {1,2}),
-    ("1-1,3-4", 5, {1,3,4}),
-    ("1,3", 5, {1,3}),
-    ("2-", 5, {2,3,4,5}),
-    ("-2", 5, {1,2}),
-    ("-2,2-", 5, {1,2,3,4,5}),
-    ("1,6-7,8", 5, {1})])
+    ([], 3, {1, 2, 3}),
+    ([[1, 2]], 3, {1, 2}),
+    ([[1], [3, 4]], 5, {1, 3, 4}),
+    ([[1],[3]], 5, {1, 3}),
+    ([[2, None]], 5, {2, 3, 4, 5}),
+    ([[None, 2]], 5, {1, 2}),
+    ([[None, 2], [2, None]], 5, {1, 2, 3, 4, 5}),
+    ([[1], [6, 7], [8]], 5, {1})])
 def test_get_pages_valid(ranges_value, total_pages, expected):
     assert base.get_pages(ranges_value, total_pages) == expected
-
-
-@pytest.mark.parametrize("ranges_value", ["a", "1-a", "1=2", "1-2:2-3"])
-def test_get_pages_invalid(ranges_value):
-    with pytest.raises(ValueError):
-        assert base.get_pages(ranges_value, 1)
diff --git a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wpttest.py b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wpttest.py
index 1078912a229..3750defa6a1 100644
--- a/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wpttest.py
+++ b/tests/wpt/web-platform-tests/tools/wptrunner/wptrunner/wpttest.py
@@ -453,7 +453,8 @@ class ReftestTest(Test):
     test_type = "reftest"
 
     def __init__(self, tests_root, url, inherit_metadata, test_metadata, references,
-                 timeout=None, path=None, viewport_size=None, dpi=None, fuzzy=None, protocol="http", quic=False):
+                 timeout=None, path=None, viewport_size=None, dpi=None, fuzzy=None, protocol="http",
+                 quic=False):
         Test.__init__(self, tests_root, url, inherit_metadata, test_metadata, timeout,
                       path, protocol, quic)
 
@@ -466,6 +467,13 @@ class ReftestTest(Test):
         self.dpi = dpi
         self._fuzzy = fuzzy or {}
 
+    @classmethod
+    def cls_kwargs(cls, manifest_test):
+        return {"viewport_size": manifest_test.viewport_size,
+                "dpi": manifest_test.dpi,
+                "protocol": server_protocol(manifest_test),
+                "fuzzy": manifest_test.fuzzy}
+
     @classmethod
     def from_manifest(cls,
                       manifest_file,
@@ -485,11 +493,8 @@ class ReftestTest(Test):
                    [],
                    timeout=timeout,
                    path=manifest_test.path,
-                   viewport_size=manifest_test.viewport_size,
-                   dpi=manifest_test.dpi,
-                   protocol=server_protocol(manifest_test),
-                   fuzzy=manifest_test.fuzzy,
-                   quic=quic)
+                   quic=quic,
+                   **cls.cls_kwargs(manifest_test))
 
         refs_by_type = defaultdict(list)
 
@@ -592,14 +597,37 @@ class ReftestTest(Test):
                 values[key] = data
         return values
 
+    @property
+    def page_ranges(self):
+        return {}
+
 
 class PrintReftestTest(ReftestTest):
     test_type = "print-reftest"
 
+    def __init__(self, tests_root, url, inherit_metadata, test_metadata, references,
+                 timeout=None, path=None, viewport_size=None, dpi=None, fuzzy=None,
+                 page_ranges=None, protocol="http", quic=False):
+        super(PrintReftestTest, self).__init__(tests_root, url, inherit_metadata, test_metadata,
+                                               references, timeout, path, viewport_size, dpi,
+                                               fuzzy, protocol, quic=quic)
+        self._page_ranges = page_ranges
+
+    @classmethod
+    def cls_kwargs(cls, manifest_test):
+        rv = super(PrintReftestTest, cls).cls_kwargs(manifest_test)
+        rv["page_ranges"] = manifest_test.page_ranges
+        return rv
+
     def get_viewport_size(self, override):
         assert override is None
         return (5*2.54, 3*2.54)
 
+    @property
+    def page_ranges(self):
+        return self._page_ranges
+
+
 class WdspecTest(Test):
     result_cls = WdspecResult
     subtest_result_cls = WdspecSubtestResult
diff --git a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-delaynode-interface/no-dezippering.html b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-delaynode-interface/no-dezippering.html
index 3f8360417dd..ccca103a3bc 100644
--- a/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-delaynode-interface/no-dezippering.html
+++ b/tests/wpt/web-platform-tests/webaudio/the-audio-api/the-delaynode-interface/no-dezippering.html
@@ -93,7 +93,7 @@
       audit.define(
           {label: 'test1', description: 'Test value setter and setValueAtTime'},
           (task, should) => {
-            testWithAutomation(should, {prefix: '', threshold: 5.9605e-8})
+            testWithAutomation(should, {prefix: '', threshold: 6.5819e-5})
                 .then(() => task.done());
           });
 
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 c0b76e415e6..22c147a8867 100644
--- a/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini
+++ b/tests/wpt/webgl/meta/conformance2/rendering/draw-buffers.html.ini
@@ -164,3 +164,6 @@
   [WebGL test #41: attachment 4 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 255,0,0,0]
     expected: FAIL
 
+  [WebGL test #52: attachment 7 should be 0,255,0,255\nat (0, 0) expected: 0,255,0,255 was 255,0,0,0]
+    expected: FAIL
+