Split libjingle's signaling thread from the UI thread

content/renderer/media/peer_connection_tracker.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 #include "content/renderer/media/peer_connection_tracker.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/thread_task_runner_handle.h"
 #include "content/common/media/peer_connection_tracker_messages.h"
 #include "content/renderer/media/rtc_media_constraints.h"
@@ skipping 286 matching lines @@
     IPC_MESSAGE_HANDLER(PeerConnectionTracker_GetAllStats, OnGetAllStats)
     IPC_MESSAGE_HANDLER(PeerConnectionTracker_OnSuspend, OnSuspend)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void PeerConnectionTracker::OnGetAllStats() {
   DCHECK(main_thread_.CalledOnValidThread());
 
+  const std::string empty_track_id;
   for (PeerConnectionIdMap::iterator it = peer_connection_id_map_.begin();
        it != peer_connection_id_map_.end(); ++it) {
     rtc::scoped_refptr<InternalStatsObserver> observer(
         new rtc::RefCountedObject<InternalStatsObserver>(it->second));
 
+    // The last type parameter is ignored when the track id is empty.
     it->first->GetStats(

[perkj_chrome, 2014/10/31 08:37:24]

oh, this is the reason there is a getStats and GetStats in PCHandler....
ok then....

[tommi (sloooow) - chröme, 2014/10/31 10:06:32]

Yup, I tried to remove it but yeah

         observer,
-        NULL,
-        webrtc::PeerConnectionInterface::kStatsOutputLevelDebug);
+        webrtc::PeerConnectionInterface::kStatsOutputLevelDebug,
+        empty_track_id, blink::WebMediaStreamSource::TypeAudio);
   }
 }
 
 void PeerConnectionTracker::OnSuspend() {
   DCHECK(main_thread_.CalledOnValidThread());
   for (PeerConnectionIdMap::iterator it = peer_connection_id_map_.begin();
        it != peer_connection_id_map_.end(); ++it) {
     it->first->CloseClientPeerConnection();
   }
 }
@@ skipping 249 matching lines @@
   DCHECK(main_thread_.CalledOnValidThread());
   if (peer_connection_id_map_.find(pc_handler) == peer_connection_id_map_.end())
     return;
 
   RenderThreadImpl::current()->Send(
       new PeerConnectionTrackerHost_UpdatePeerConnection(
           peer_connection_id_map_[pc_handler], type, value));
 }
 
 }  // namespace content