MediaRecorder: correct MIME type parsing

third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-isTypeSupported.html

Index: third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-isTypeSupported.html
diff --git a/third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-isTypeSupported.html b/third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-isTypeSupported.html
index 49f2253c365f452316ca6d1f407fd70e5c7a63a3..796935d536e2d5a33ecff9b4570db77b7dc02cdd 100644
--- a/third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-isTypeSupported.html
+++ b/third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-isTypeSupported.html
@@ -2,28 +2,39 @@
 <script src=../../resources/testharness.js></script>
 <script src=../../resources/testharnessreport.js></script>
 <script>
-// Check the Video formats that should be recordable and one that should not be.
-// Supported formats return "maybe". Same for Audio.
+// Check some video MIME types that should be recordable and a few that should
+// not be. Supported MIME types return true. Same for Audio.
 // https://w3c.github.io/mediacapture-record/MediaRecorder.html#methods
 
 test(function() {
   assert_false(MediaRecorder.isTypeSupported("video/invalid"));
-}, 'check MediaRecorder.isTypeSupported() with video/invalid');
+  assert_false(MediaRecorder.isTypeSupported("video/mpeg4"));
+  assert_false(MediaRecorder.isTypeSupported("video/webm;codecs=daala"));
+}, 'check MediaRecorder.isTypeSupported() with invalid video MIME types');
 
 test(function() {
-  assert_true(MediaRecorder.isTypeSupported("video/vp8"));
-}, 'check MediaRecorder.isTypeSupported() with video/vp8');
-
-test(function() {
-  assert_true(MediaRecorder.isTypeSupported("video/vp9"));
-}, 'check MediaRecorder.isTypeSupported() with video/vp9');
+  assert_true(MediaRecorder.isTypeSupported("video/webm"));
+  assert_true(MediaRecorder.isTypeSupported("video/webm;codecs=vp8"));
+  assert_true(MediaRecorder.isTypeSupported("video/webm;codecs=vp9"));
+  assert_true(MediaRecorder.isTypeSupported("video/webm;codecs=vp8.0"));
+  assert_true(MediaRecorder.isTypeSupported("video/webm;codecs=vp9.0"));
+  // "video/webm" supports audio codec specification, see
+  // http://www.webmproject.org/docs/container/
+  assert_true(MediaRecorder.isTypeSupported("video/webm;codecs=vp8,opus"));
+  assert_true(MediaRecorder.isTypeSupported("video/WEBM;codecs=VP8,OPUS"));
+  assert_true(MediaRecorder.isTypeSupported("video/webm;codecs=vp9,opus"));
+  assert_true(MediaRecorder.isTypeSupported("video/webm;codecs=vp8,vp9,opus"));
+}, 'check MediaRecorder.isTypeSupported() with valid video MIME types');
 
 test(function() {
   assert_false(MediaRecorder.isTypeSupported("audio/invalid"));
-}, 'check MediaRecorder.isTypeSupported() with audio/invalid');
+  assert_false(MediaRecorder.isTypeSupported("audio/ogg"));
+  assert_false(MediaRecorder.isTypeSupported("audio/webm;codecs=vorbis"));
+}, 'check MediaRecorder.isTypeSupported() with invalid audio MIME types');
 
 test(function() {
-  assert_true(MediaRecorder.isTypeSupported("audio/opus"));
-}, 'check MediaRecorder.isTypeSupported() with audio/opus');
+  assert_true(MediaRecorder.isTypeSupported("audio/webm"));
+  assert_true(MediaRecorder.isTypeSupported("audio/webm;codecs=opus"));
+}, 'check MediaRecorder.isTypeSupported() with valid audio MIME types');
 
 </script>