ef3fd9c8ad
Add support of negotiating simulcast offer/answer. Also fix some minor issues around to make it finally work. Bug: webrtc:10138 Change-Id: I382f5df04ca6ac04d8ed1e030e7b2ae5706dd10c Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/137425 Commit-Queue: Artem Titov <titovartem@webrtc.org> Reviewed-by: Florent Castelli <orphis@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Amit Hilbuch <amithi@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28274}