Support varies by codec, especially in the simulcast case, but using the EncoderSimulcastProxy codec should fix this. Bug: webrtc:10069 Change-Id: Idb6a5f400ffda1cdb139004f540961a9cf85d224 Reviewed-on: https://webrtc-review.googlesource.com/c/119400 Commit-Queue: Florent Castelli <orphis@webrtc.org> Reviewed-by: Seth Hampson <shampson@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26449}