Adding more detail to MessageQueue::Dispatch logging.

webrtc/api/peerconnectionfactoryproxy.h

 /*
  *  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 15 matching lines @@
   // Can't use PROXY_METHOD5 because unique_ptr must be moved.
   // TODO(tommi,hbos): Use of templates to support unique_ptr?
   rtc::scoped_refptr<PeerConnectionInterface> CreatePeerConnection(
       const PeerConnectionInterface::RTCConfiguration& a1,
       const MediaConstraintsInterface* a2,
       std::unique_ptr<cricket::PortAllocator> a3,
       std::unique_ptr<rtc::RTCCertificateGeneratorInterface> a4,
       PeerConnectionObserver* a5) override {
     return signaling_thread_
         ->Invoke<rtc::scoped_refptr<PeerConnectionInterface>>(
+            RTC_FROM_HERE,
             rtc::Bind(&PeerConnectionFactoryProxy::CreatePeerConnection_ot,
                       this, a1, a2, a3.release(), a4.release(), a5));
   }
   rtc::scoped_refptr<PeerConnectionInterface> CreatePeerConnection(
       const PeerConnectionInterface::RTCConfiguration& a1,
       std::unique_ptr<cricket::PortAllocator> a3,
       std::unique_ptr<rtc::RTCCertificateGeneratorInterface> a4,
       PeerConnectionObserver* a5) override {
     return signaling_thread_
         ->Invoke<rtc::scoped_refptr<PeerConnectionInterface>>(
+            RTC_FROM_HERE,
             rtc::Bind(&PeerConnectionFactoryProxy::CreatePeerConnection_ot,
                       this, a1, a3.release(), a4.release(), a5));
   }
   PROXY_METHOD1(rtc::scoped_refptr<MediaStreamInterface>,
                 CreateLocalMediaStream, const std::string&)
   PROXY_METHOD1(rtc::scoped_refptr<AudioSourceInterface>,
                 CreateAudioSource, const MediaConstraintsInterface*)
   PROXY_METHOD1(rtc::scoped_refptr<AudioSourceInterface>,
                 CreateAudioSource,
                 const cricket::AudioOptions&)
@@ skipping 37 matching lines @@
     std::unique_ptr<cricket::PortAllocator> ptr_a3(a3);
     std::unique_ptr<rtc::RTCCertificateGeneratorInterface> ptr_a4(a4);
     return c_->CreatePeerConnection(a1, std::move(ptr_a3), std::move(ptr_a4),
                                     a5);
   }
   END_SIGNALING_PROXY()
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_PEERCONNECTIONFACTORYPROXY_H_