BitrateTracker uses RateStatistics underneath, thus algorithm is the same, but it provides Timestamp/TimeDelta friendly interface Bug: webrtc:13757 Change-Id: I9f2fcb3d498b2a137b531b94b660d15aa273c4bf Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/312600 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/main@{#40465}