ResetNackCount and UpdateMaxFrameSize were unused. Bug: None Change-Id: I314b3edce368ee3230bc3510e1bba520806d1493 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/134201 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27789}