deleted file mode 100644
--- a/testing/web-platform/meta/webvtt/webvtt-api-for-browsers/vttcue-interface/getCueAsHTML.html.ini
+++ /dev/null
@@ -1,38 +0,0 @@
-[getCueAsHTML.html]
-  type: testharness
-  [VTTCue.getCueAsHTML(), creating the cue]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <c>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <c.a.b>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <i>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <b>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <u>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <ruby>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <rt>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <v>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <v a b>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), <00:00:00.500>]
-    expected: FAIL
-
-  [VTTCue.getCueAsHTML(), x\\0]
-    expected: FAIL
-

--- a/testing/web-platform/meta/webvtt/webvtt-file-format-parsing/webvtt-cue-text-parsing-rules/tests/entities.html.ini
+++ b/testing/web-platform/meta/webvtt/webvtt-file-format-parsing/webvtt-cue-text-parsing-rules/tests/entities.html.ini
@@ -1,9 +1,10 @@
 [entities.html]
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1307710
   type: testharness
   [WebVTT cue data parser test entities - 3686fc0cdc60dc536e75df054b0bd372273db2cc]
     expected: FAIL
 
   [WebVTT cue data parser test entities - f1869f6e2853635eec81cc3afa3e2b8148ccbdc0]
     expected: FAIL
 
   [WebVTT cue data parser test entities - 92d76530d723b6b4e4ef8280c01cf1c80f9bebdb]

--- a/testing/web-platform/meta/webvtt/webvtt-file-format-parsing/webvtt-cue-text-parsing-rules/tests/tags.html.ini
+++ b/testing/web-platform/meta/webvtt/webvtt-file-format-parsing/webvtt-cue-text-parsing-rules/tests/tags.html.ini
@@ -1,9 +1,10 @@
 [tags.html]
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1307710
   type: testharness
   [WebVTT cue data parser test tags - 9dd187edd10c907e6b92148fd82940e401dbe79f]
     expected: FAIL
 
   [WebVTT cue data parser test tags - 2d2c4333983e23a4962083e8120e5d42c839f77b]
     expected: FAIL
 
   [WebVTT cue data parser test tags - 2fdc1b84ba41ec98833851e80781df1fbe72182f]

--- a/testing/web-platform/meta/webvtt/webvtt-file-format-parsing/webvtt-cue-text-parsing-rules/tests/timestamps.html.ini
+++ b/testing/web-platform/meta/webvtt/webvtt-file-format-parsing/webvtt-cue-text-parsing-rules/tests/timestamps.html.ini
@@ -1,29 +1,29 @@
 [timestamps.html]
   type: testharness
   [WebVTT cue data parser test timestamps - 54c245f3fbe7a3e25398b13971d44f2bb3a5f947]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test timestamps - 5e190a1b4541fcb10e403af111c14ef152fecb0d]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test timestamps - 92b97d3497836259e0b9305e27f2b91ea1dc9b31]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test timestamps - 47fa4306a695161da88533d456ce94829e53b13d]
     expected: FAIL
 
   [WebVTT cue data parser test timestamps - c1036a4322c1852e02e5a1843a9a81dfca6d7af3]
     expected: FAIL
 
   [WebVTT cue data parser test timestamps - 70ec34d828ca661a583c651207becb968bb41653]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test timestamps - 66ba641ff047a226fa60fe867fd2479d40f3ff0f]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test timestamps - 398e8da1aaaf392739ca72057fef58bd5333f74d]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test timestamps - 391fce67644cf4dd9967e1436d1449ef5baf675f]
-    expected: FAIL
+    expected: PASS
 

--- a/testing/web-platform/meta/webvtt/webvtt-file-format-parsing/webvtt-cue-text-parsing-rules/tests/tree-building.html.ini
+++ b/testing/web-platform/meta/webvtt/webvtt-file-format-parsing/webvtt-cue-text-parsing-rules/tests/tree-building.html.ini
@@ -1,62 +1,62 @@
 [tree-building.html]
   type: testharness
   [WebVTT cue data parser test tree-building - 4e1243bd22c66e76c2ba9eddc1f91394e57f9f83]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 6ceded63b53eeab3681a0fc540e959ca88f7dce9]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 71de37451e7d5524eacc8a190d21cd64c4304e14]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 985284b688a09f1f55e3c9aab49d7e4ca11f870a]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - fa6993eaa94404648d8b52e2830e53369404fdcb]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - e4d351e1a6b40a7dace801b722efaa200c4895f2]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 68e1d0376f827ebe0c047751a2067594ff41b612]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 2564487cfc7e317428fb437ef8de8de4f4963426]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 9b1902c975558eeaff4afbaf0a6dc100e1978769]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 119c596ea09649d3bd03934485e3067e89377412]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - c94512b045699cb72f730e46b2a0a3bed2c939f9]
     expected: FAIL
 
   [WebVTT cue data parser test tree-building - 325c1e590e74f1ff33ca5b4838c04cf6b6dd71ba]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 92847ed2694c9639ba96f4cc61e2215362a74904]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - c0da62d1c8716ca544c96799f06ac7e4664500fb]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - b85bd616672eba0591718182ef32e3307d223bb0]
     expected: FAIL
 
   [WebVTT cue data parser test tree-building - ab2024b4e65ed64a751adbe8aae1e84ee61bf3e6]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 10f4823ffb17c71654c4602bc45c58300e3ecbcc]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - 909924ef392fb20c9526acfa4f18f891eda61a0c]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - e5ca35cc29404efc0ebd58aa5f6efefc86fc5287]
-    expected: FAIL
+    expected: PASS
 
   [WebVTT cue data parser test tree-building - e535c486dac7dc571463b150adc55fd841bc3008]
-    expected: FAIL
+    expected: PASS