
PASS SourceBuffer#abort (video/webm; codecs="vorbis,vp8") : if this object has been removed from the sourceBuffers attribute of the parent media source, then throw an INVALID_STATE_ERR exception and abort these steps. 
PASS SourceBuffer#abort (video/mp4) : if this object has been removed from the sourceBuffers attribute of the parent media source, then throw an INVALID_STATE_ERR exception and abort these steps.