Purpose of this PR:
As chrome is moving towards switching default to unfied-plan, the MCU team has made changes to support the new SDP and hence some fine tuning is needed in 1.x.x SDK to enable the transition.
onaddstream is now changed to ontrack
streamIdPeerIdMap is changed to transceiverIdPeerIdMap [Look up transceiverMid in RTCTrackEvent parameter of ontrack]
A new method compareTrackCounts is added to decide if new Transceivers are needed in local SDP before sending an offer
Purpose of this PR: As chrome is moving towards switching default to
unfied-plan, the MCU team has made changes to support the newSDPand hence some fine tuning is needed in 1.x.x SDK to enable the transition.onaddstreamis now changed toontrackstreamIdPeerIdMapis changed totransceiverIdPeerIdMap[Look uptransceiverMidinRTCTrackEventparameter ofontrack]compareTrackCountsis added to decide if newTransceiversare needed in local SDP before sending anofferSee ESS-1415 for more details.