bug 1066467 enable config-change-mp4 tests

--HG--
extra : rebase_source : 4b2719951060a7dc54f2c4952c308db4fa89ab4d

testing/web-platform/meta/media-source/mediasource-config-change-mp4-a-bitrate.html.ini

@@ -1,3 +1,5 @@
 [mediasource-config-change-mp4-a-bitrate.html]
   type: testharness
-  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1066467
+  [Tests mp4 audio-only bitrate changes.]
+    expected: FAIL
+

testing/web-platform/meta/media-source/mediasource-config-change-mp4-av-audio-bitrate.html.ini

@@ -1,3 +1,5 @@
 [mediasource-config-change-mp4-av-audio-bitrate.html]
   type: testharness
-  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1066467
+  [Tests mp4 audio bitrate changes in multiplexed content.]
+    expected: FAIL
+

testing/web-platform/meta/media-source/mediasource-config-change-mp4-av-framesize.html.ini

@@ -1,3 +1,5 @@
 [mediasource-config-change-mp4-av-framesize.html]
   type: testharness
-  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1066467
+  [Tests mp4 frame size changes in multiplexed content.]
+    expected: FAIL
+

testing/web-platform/meta/media-source/mediasource-config-change-mp4-av-video-bitrate.html.ini

@@ -1,3 +1,5 @@
 [mediasource-config-change-mp4-av-video-bitrate.html]
   type: testharness
-  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1066467
+  [Tests mp4 video bitrate changes in multiplexed content.]
+    expected: FAIL
+

testing/web-platform/meta/media-source/mediasource-config-change-mp4-v-bitrate.html.ini

@@ -1,3 +1,5 @@
 [mediasource-config-change-mp4-v-bitrate.html]
   type: testharness
-  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1066467
+  [Tests mp4 video-only bitrate changes.]
+    expected: FAIL
+

testing/web-platform/meta/media-source/mediasource-config-change-mp4-v-framerate.html.ini

@@ -1,3 +1,5 @@
 [mediasource-config-change-mp4-v-framerate.html]
   type: testharness
-  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1066467
+  [Tests mp4 video-only frame rate changes.]
+    expected: FAIL
+

testing/web-platform/meta/media-source/mediasource-config-change-mp4-v-framesize.html.ini

@@ -1,3 +1,5 @@
 [mediasource-config-change-mp4-v-framesize.html]
   type: testharness
-  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1066467
+  [Tests mp4 video-only frame size changes.]
+    expected: FAIL
+