Adding more detail to MessageQueue::Dispatch logging.

webrtc/api/peerconnection.cc

Index: webrtc/api/peerconnection.cc
diff --git a/webrtc/api/peerconnection.cc b/webrtc/api/peerconnection.cc
index 5284db37fd7675bb65c01af4417f8a20b66783e3..048f26b1e1dc2d5c3138ab0ea7416d54c2632da3 100644
--- a/webrtc/api/peerconnection.cc
+++ b/webrtc/api/peerconnection.cc
@@ -560,7 +560,8 @@ PeerConnection::~PeerConnection() {
   // which will trigger some final actions in PeerConnection...
   session_.reset(nullptr);
   // port_allocator_ lives on the worker thread and should be destroyed there.
-  worker_thread()->Invoke<void>([this] { port_allocator_.reset(nullptr); });
+  worker_thread()->Invoke<void>(FROM_HERE,
+                                [this] { port_allocator_.reset(nullptr); });
 }
 
 bool PeerConnection::Initialize(
@@ -579,8 +580,9 @@ bool PeerConnection::Initialize(
 
   // The port allocator lives on the worker thread and should be initialized
   // there.
-  if (!worker_thread()->Invoke<bool>(rtc::Bind(
-          &PeerConnection::InitializePortAllocator_w, this, configuration))) {
+  if (!worker_thread()->Invoke<bool>(
+          FROM_HERE, rtc::Bind(&PeerConnection::InitializePortAllocator_w, this,
+                               configuration))) {
     return false;
   }
 
@@ -821,7 +823,7 @@ bool PeerConnection::GetStats(StatsObserver* observer,
   }
 
   stats_->UpdateStats(level);
-  signaling_thread()->Post(this, MSG_GETSTATS,
+  signaling_thread()->Post(FROM_HERE, this, MSG_GETSTATS,
                            new GetStatsMsg(observer, track));
   return true;
 }
@@ -1050,7 +1052,8 @@ void PeerConnection::SetLocalDescription(
   }
 
   SetSessionDescriptionMsg* msg = new SetSessionDescriptionMsg(observer);
-  signaling_thread()->Post(this, MSG_SET_SESSIONDESCRIPTION_SUCCESS, msg);
+  signaling_thread()->Post(FROM_HERE, this, MSG_SET_SESSIONDESCRIPTION_SUCCESS,
+                           msg);
 
   // MaybeStartGathering needs to be called after posting
   // MSG_SET_SESSIONDESCRIPTION_SUCCESS, so that we don't signal any candidates
@@ -1157,15 +1160,16 @@ void PeerConnection::SetRemoteDescription(
   UpdateEndedRemoteMediaStreams();
 
   SetSessionDescriptionMsg* msg = new SetSessionDescriptionMsg(observer);
-  signaling_thread()->Post(this, MSG_SET_SESSIONDESCRIPTION_SUCCESS, msg);
+  signaling_thread()->Post(FROM_HERE, this, MSG_SET_SESSIONDESCRIPTION_SUCCESS,
+                           msg);
 }
 
 bool PeerConnection::SetConfiguration(const RTCConfiguration& configuration) {
   TRACE_EVENT0("webrtc", "PeerConnection::SetConfiguration");
   if (port_allocator_) {
     if (!worker_thread()->Invoke<bool>(
-            rtc::Bind(&PeerConnection::ReconfigurePortAllocator_w, this,
-                      configuration))) {
+            FROM_HERE, rtc::Bind(&PeerConnection::ReconfigurePortAllocator_w,
+                                 this, configuration))) {
       return false;
     }
   }
@@ -1472,7 +1476,8 @@ void PeerConnection::PostSetSessionDescriptionFailure(
     const std::string& error) {
   SetSessionDescriptionMsg* msg = new SetSessionDescriptionMsg(observer);
   msg->error = error;
-  signaling_thread()->Post(this, MSG_SET_SESSIONDESCRIPTION_FAILED, msg);
+  signaling_thread()->Post(FROM_HERE, this, MSG_SET_SESSIONDESCRIPTION_FAILED,
+                           msg);
 }
 
 void PeerConnection::PostCreateSessionDescriptionFailure(
@@ -1480,7 +1485,8 @@ void PeerConnection::PostCreateSessionDescriptionFailure(
     const std::string& error) {
   CreateSessionDescriptionMsg* msg = new CreateSessionDescriptionMsg(observer);
   msg->error = error;
-  signaling_thread()->Post(this, MSG_CREATE_SESSIONDESCRIPTION_FAILED, msg);
+  signaling_thread()->Post(FROM_HERE, this,
+                           MSG_CREATE_SESSIONDESCRIPTION_FAILED, msg);
 }
 
 bool PeerConnection::GetOptionsForOffer(
@@ -1972,7 +1978,7 @@ void PeerConnection::OnSctpDataChannelClosed(DataChannel* channel) {
       // we can't free it directly here; we need to free it asynchronously.
       sctp_data_channels_to_free_.push_back(*it);
       sctp_data_channels_.erase(it);
-      signaling_thread()->Post(this, MSG_FREE_DATACHANNELS, nullptr);
+      signaling_thread()->Post(FROM_HERE, this, MSG_FREE_DATACHANNELS, nullptr);
       return;
     }
   }