message: Update WebRTC code version (2022-04-20T04:02:12).
  Bot-Commit:
  Cr-Commit-Position: refs/heads/main@{#36577}
diff: namespace webrtc {
  // The timestamp is always in UTC.
  -const char* const kSourceTimestamp = "WebRTC source stamp 2022-04-19T04:02:48";
  +const char* const kSourceTimestamp = "WebRTC source stamp 2022-04-20T04:02:12";
  void LoadWebRTCVersionInRegister() {
  // Using volatile to instruct the compiler to not optimize `p` away even
  