
These structures are needed to populate dependency descritpor rtp header extension. Bug: webrtc:10342 Change-Id: If6bb533544ae3aa718d0e8506bb6d1fa43df345f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/206985 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33243}