Video and audio senders are missing mid, rid and rrid extensions in their GetCapabilities call. Bug: chromium:1007894 Change-Id: Ie9edba28ae32fda5e501913cac694f43bfb185ac Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/156560 Commit-Queue: Florent Castelli <orphis@webrtc.org> Reviewed-by: Steve Anton <steveanton@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29493}