Bug 1339204 - Adds VP9 and VP9.0 as supported types in the MP4Decoder r=cpearce

MozReview-Commit-ID: 4vZGvb7nbVb

--HG--
extra : rebase_source : 26c190bd29953178fe3762a6d4426a5566d21d40

dom/media/fmp4/MP4Decoder.cpp

@@ -132,6 +132,12 @@ MP4Decoder::IsSupportedType(const MediaContainerType& aType,
             NS_LITERAL_CSTRING("audio/flac"), aType));
         continue;
       }
+      if (codec.EqualsLiteral("vp9") || codec.EqualsLiteral("vp9.0")) {
+        trackInfos.AppendElement(
+          CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
+            NS_LITERAL_CSTRING("video/vp9"), aType));
+        continue;
+      }
       // Note: Only accept H.264 in a video content type, not in an audio
       // content type.
       if (IsWhitelistedH264Codec(codec) && isVideo) {