
PASS setRemoteDescription should trigger ontrack event when the MSID of the stream is is parsed. 
PASS setRemoteDescription() with m= line of recvonly direction should not trigger track event 
PASS addTrack() should cause remote connection to fire ontrack when setRemoteDescription() 
PASS addTransceiver('video') should cause remote connection to fire ontrack when setRemoteDescription() 
PASS addTransceiver() with inactive direction should not cause remote connection to fire ontrack when setRemoteDescription()