Hookup the MediaStream glue for Adding and Removing tracks to an existing MediaStream.

content/renderer/media/media_stream_dependency_factory.h

 // 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.
 
 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DEPENDENCY_FACTORY_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DEPENDENCY_FACTORY_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 71 matching lines @@
       WebKit::WebMediaStream* description);
 
   // Creates a libjingle representation of a MediaStream and stores
   // it in the extra data field of |description|.
   // |stream_stopped| is a callback that is run when a MediaStream have been
   // stopped.
   void CreateNativeLocalMediaStream(
       WebKit::WebMediaStream* description,
       const MediaStreamExtraData::StreamStopCallback& stream_stop);
 
+  // Adds a libjingle representation of a MediaStreamTrack to |stream| based
+  // on the source of |track|.
+  bool AddNativeMediaStreamTrack(const WebKit::WebMediaStream& stream,
+                                 const WebKit::WebMediaStreamTrack& track);
+
+  bool RemoveNativeMediaStreamTrack(const WebKit::WebMediaStream& stream,
+                                    const WebKit::WebMediaStreamTrack& track);
+
   // Asks the libjingle PeerConnection factory to create a libjingle
   // PeerConnection object.
   // The PeerConnection object is owned by PeerConnectionHandler.
   virtual scoped_refptr<webrtc::PeerConnectionInterface>
       CreatePeerConnection(
           const webrtc::PeerConnectionInterface::IceServers& ice_servers,
           const webrtc::MediaConstraintsInterface* constraints,
           WebKit::WebFrame* web_frame,
           webrtc::PeerConnectionObserver* observer);
 
@@ skipping 86 matching lines @@
   talk_base::Thread* signaling_thread_;
   talk_base::Thread* worker_thread_;
   base::Thread chrome_worker_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamDependencyFactory);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DEPENDENCY_FACTORY_H_