Get rid of default receive channel. BUG=webrtc:4690 Review URL: https://codereview.webrtc.org/1385893002 Cr-Commit-Position: refs/heads/master@{#10262}
Get rid of default receive channel. BUG=webrtc:4690 Review URL: https://codereview.webrtc.org/1385893002 Cr-Commit-Position: refs/heads/master@{#10262}