zhihuang 4da058c0dd Create an Obj-C wrapper of the RtpReceiverObserverInterface.
Create the RTCRtpReceiverDelegate which is a wrapper over
webrtc::RtpReceiverObserverInterface.
The callback will be called whenever the first rtp packet is received.

Related CL: https://codereview.webrtc.org/2531333003/

BUG=webrtc:6742

Review-Url: https://codereview.webrtc.org/2641923003
Cr-Commit-Position: refs/heads/master@{#16501}
2017-02-08 18:41:20 +00:00
..
2016-07-28 21:53:01 +00:00