Cast: deliver video frames on the IO thread

content/renderer/media/rtc_peer_connection_handler_unittest.cc

 // Copyright (c) 2012 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 <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 269 matching lines @@
     if (!audio_track_label.empty()) {
       scoped_refptr<WebRtcAudioCapturer> capturer;
       scoped_refptr<webrtc::AudioTrackInterface> audio_track(
           WebRtcLocalAudioTrackAdapter::Create(audio_track_label, NULL));
       stream->AddTrack(audio_track.get());
     }
     mock_peer_connection_->AddRemoteStream(stream.get());
     return stream;
   }
 
+  base::MessageLoop message_loop_;
   scoped_ptr<ChildProcess> child_process_;
   scoped_ptr<MockWebRTCPeerConnectionHandlerClient> mock_client_;
   scoped_ptr<MockMediaStreamDependencyFactory> mock_dependency_factory_;
   scoped_ptr<NiceMock<MockPeerConnectionTracker> > mock_tracker_;
   scoped_ptr<RTCPeerConnectionHandlerUnderTest> pc_handler_;
 
   // Weak reference to the mocked native peer connection implementation.
   MockPeerConnectionImpl* mock_peer_connection_;
 };
 
@@ skipping 556 matching lines @@
   EXPECT_CALL(*mock_tracker_.get(),
               TrackCreateDTMFSender(pc_handler_.get(),
                                     testing::Ref(tracks[0])));
 
   scoped_ptr<blink::WebRTCDTMFSenderHandler> sender(
       pc_handler_->createDTMFSender(tracks[0]));
   EXPECT_TRUE(sender.get());
 }
 
 }  // namespace content