
PASS Test addSourceBuffer(), removeSourceBuffer(), addSourceBuffer() sequence.
PASS Test removeSourceBuffer() with null
PASS Test calling removeSourceBuffer() twice with the same object.
PASS Test calling removeSourceBuffer() for a sourceBuffer belonging to a different mediaSource instance.
PASS Test calling removeSourceBuffer() in ended state.
PASS Test removesourcebuffer event on activeSourceBuffers.
PASS Test abort event when removeSourceBuffer() called while SourceBuffer is updating