And implemented in LoopbackMediaTransport. Bug: webrtc:9719 Change-Id: I68b16c2b6ed5583ffe9a5266e3d4cb1d94afbb97 Reviewed-on: https://webrtc-review.googlesource.com/c/113523 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25948}