PASS Test addSourceBuffer() with empty type 
PASS Test addSourceBuffer() with unsupported type 
PASS Test addSourceBuffer() with Vorbis and VP8 
PASS Test addSourceBuffer() with Vorbis and VP8 in separate SourceBuffers 
FAIL Test addSourceBuffer() with AAC and H.264 assert_true: video/mp4;codecs="avc1.4D4001,mp4a.40.2" is supported expected true got false
FAIL Test addSourceBuffer() with AAC and H.264 in separate SourceBuffers assert_true: video/mp4;codecs="avc1.4D4001" is supported expected true got false