Use IncomingVideoStream in VideoReceiveStream.

Decouples VideoReceiveStream further from webrtc/video_engine/ as well
as most of webrtc/modules/video_render/ resulting in a simpler setup.

BUG=1695
R=mflodman@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/50749004

Cr-Commit-Position: refs/heads/master@{#9080}
10 files changed