Adding more detail to MessageQueue::Dispatch logging.

webrtc/api/remoteaudiosource.cc

 /*
  *  Copyright 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 130 matching lines @@
   rtc::CritScope lock(&sink_lock_);
   for (auto* sink : sinks_) {
     sink->OnData(audio.data, 16, audio.sample_rate, audio.channels,
                  audio.samples_per_channel);
   }
 }
 
 void RemoteAudioSource::OnAudioProviderGone() {
   // Called when the data provider is deleted.  It may be the worker thread
   // in libjingle or may be a different worker thread.
-  main_thread_->Post(new MessageHandler(this));
+  main_thread_->Post(RTC_FROM_HERE, new MessageHandler(this));
 }
 
 void RemoteAudioSource::OnMessage(rtc::Message* msg) {
   RTC_DCHECK(main_thread_->IsCurrent());
   sinks_.clear();
   state_ = MediaSourceInterface::kEnded;
   FireOnChanged();
 }
 
 }  // namespace webrtc