Integrate FlexFEC in video_loopback.

BUG=webrtc:5654

Review-Url: https://codereview.webrtc.org/2497403004
Cr-Original-Commit-Position: refs/heads/master@{#15119}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: a62f5826d7c318b9ff2fe4b408758ac968b24b07
1 file changed