message: [Unwrap] Remove unused TimestampWrapAroundHandler from VideoChannel
  Cr-Commit-Position: refs/heads/main@{#38941}
diff: @@ -547,10 +547,6 @@ class WebRtcVideoChannel : public VideoMediaChannel,
  webrtc::Mutex sink_lock_;
  rtc::VideoSinkInterface<webrtc::VideoFrame>* sink_
  RTC_GUARDED_BY(sink_lock_);
  - // Expands remote RTP timestamps to int64_t to be able to estimate how long
  - // the stream has been running.
  - rtc::TimestampWrapAroundHandler timestamp_wraparound_handler_
  - RTC_GUARDED_BY(sink_lock_);
  int64_t first_frame_timestamp_ RTC_GUARDED_BY(sink_lock_);
  // Start NTP time is estimated as current remote NTP time (estimated from
  // RTCP) minus the elapsed time, as soon as remote NTP time is available.
  