Delete unsupported method VideoCodingModule::RegisterDecoderTimingCallback.

webrtc/modules/video_coding/video_receiver.cc

Index: webrtc/modules/video_coding/video_receiver.cc
diff --git a/webrtc/modules/video_coding/video_receiver.cc b/webrtc/modules/video_coding/video_receiver.cc
index 6a4819eb1db0cf1f1cbfa820f372c24ff2097739..38075193487827a814ac15b892ecf408afe143b0 100644
--- a/webrtc/modules/video_coding/video_receiver.cc
+++ b/webrtc/modules/video_coding/video_receiver.cc
@@ -39,7 +39,6 @@ VideoReceiver::VideoReceiver(Clock* clock,
       _decodedFrameCallback(_timing, clock_),
       _frameTypeCallback(nullptr),
       _receiveStatsCallback(nullptr),
-      _decoderTimingCallback(nullptr),
       _packetRequestCallback(nullptr),
       _frameFromFile(),
       _scheduleKeyRequest(false),
@@ -186,14 +185,6 @@ int32_t VideoReceiver::RegisterReceiveStatisticsCallback(
   return VCM_OK;
 }
 
-int32_t VideoReceiver::RegisterDecoderTimingCallback(
-    VCMDecoderTimingCallback* decoderTiming) {
-  RTC_DCHECK(construction_thread_.CalledOnValidThread());
-  rtc::CritScope cs(&process_crit_);
-  _decoderTimingCallback = decoderTiming;
-  return VCM_OK;
-}
-
 // Register an externally defined decoder object.
 void VideoReceiver::RegisterExternalDecoder(VideoDecoder* externalDecoder,
                                             uint8_t payloadType) {