- Removes voe_conference_test.
- Adds a new AudioStatsTest, with better coverage of the same features, based on call_test.
- Adds an AudioEndToEndTest utility, which AudioStatsTest and LowBandwidthAudioTest uses.

BUG=webrtc:4690
R=kwiberg@webrtc.org

Review-Url: https://codereview.webrtc.org/3008273002 .
Cr-Original-Commit-Position: refs/heads/master@{#19833}
Cr-Mirrored-From: https://webrtc.googlesource.com/src
Cr-Mirrored-Commit: 73276ad7ed1e70ab764cd02d7189ed5839fadc20
15 files changed