message: Remove dead kDummyVideoSsrc and FPS_TO_INTERVAL from video_common.h.
  Cr-Commit-Position: refs/heads/master@{#29746}
diff: namespace cricket {
  -// TODO(janahan): For now, a hard-coded ssrc is used as the video ssrc.
  -// This is because when the video frame is passed to the mediaprocessor for
  -// processing, it doesn't have the correct ssrc. Since currently only Tx
  -// Video processing is supported, this is ok. When we switch over to trigger
  -// from capturer, this should be fixed and this const removed.
  -const uint32_t kDummyVideoSsrc = 0xFFFFFFFF;
  -
  -// Minimum interval is 10k fps.
  -#define FPS_TO_INTERVAL(fps) \
  - (fps ? rtc::kNumNanosecsPerSec / fps : rtc::kNumNanosecsPerSec / 10000)
  -
  //////////////////////////////////////////////////////////////////////////////
  // Definition of FourCC codes
  //////////////////////////////////////////////////////////////////////////////
  