
This patch adds support for sending zero video layer allocations header extensions. This can be used to signal that a stream is turned off. Bug: webrtc:12000 Change-Id: Id18fbbff2216ca23179c58ef7bbe2ebea5e242af Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/212743 Commit-Queue: Jonas Oreland <jonaso@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33541}