This is part of a series of CLs removing RTP dependencies from GoogCC implementation. Bug: webrtc:10749 Change-Id: I73e9402136cc16902d177234d63369938f191e5b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/142223 Reviewed-by: Jonas Olsson <jonasolsson@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28302}