Methods deleted: ReceiveFrequency, PlayoutFrequency, ReceiveCodec, SetMinimumPlayoutDelay, SetMaximumPlayoutDelay, SetBaseMinimumPlayoutDelayMs, GetBaseMinimumPlayoutDelayMs, PlayoutTimestamp, FilteredCurrentDelayMs, TargetDelayMs. Became unused with cl https://webrtc-review.googlesource.com/c/src/+/111504 Bug: None Change-Id: Ie50e8e86a622661c3daa9db83a2e66489dcd2d98 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/148071 Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28918}