It's used for driving the old jitter buffer, which is used only when vcm::VideoReceiver is used via the legacy VideoCodingModule api. Bug: webrtc:7408 Change-Id: I179d5b26e112d9f94615d2e1b410b51a657aa05b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/127294 Commit-Queue: Niels Moller <nisse@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27147}