Revert of Moving MediaStreamSignaling logic into PeerConnection.

talk/app/webrtc/peerconnectionfactory.cc

 /*
  * libjingle
  * Copyright 2004--2011 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 11 matching lines @@
  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "talk/app/webrtc/peerconnectionfactory.h"
 
 #include "talk/app/webrtc/audiotrack.h"
 #include "talk/app/webrtc/localaudiosource.h"
-#include "talk/app/webrtc/mediastream.h"
 #include "talk/app/webrtc/mediastreamproxy.h"
 #include "talk/app/webrtc/mediastreamtrackproxy.h"
 #include "talk/app/webrtc/peerconnection.h"
 #include "talk/app/webrtc/peerconnectionfactoryproxy.h"
 #include "talk/app/webrtc/peerconnectionproxy.h"
 #include "talk/app/webrtc/portallocatorfactory.h"
 #include "talk/app/webrtc/videosource.h"
 #include "talk/app/webrtc/videosourceproxy.h"
 #include "talk/app/webrtc/videotrack.h"
 #include "talk/media/webrtc/webrtcmediaengine.h"
@@ skipping 253 matching lines @@
 }
 
 cricket::MediaEngineInterface* PeerConnectionFactory::CreateMediaEngine_w() {
   ASSERT(worker_thread_ == rtc::Thread::Current());
   return cricket::WebRtcMediaEngineFactory::Create(
       default_adm_.get(), video_encoder_factory_.get(),
       video_decoder_factory_.get());
 }
 
 }  // namespace webrtc