Add send-side BWE to WebRtcVoiceEngine under a finch experiment.
This adds negotiation of both transport sequence number and transport
feedback. Only offers transport seq num if the
WebRTC-Audio-SendSideBwe finch experiment is enabled.
TBR=mflodman@webrtc.org
BUG=webrtc:5263
Review URL: https://codereview.webrtc.org/1604563002
Cr-Original-Commit-Position: refs/heads/master@{#11487}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: ba4c0e45ffcb9c1871389b07b9be5b515d7841d5
6 files changed
