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

content/renderer/media/media_stream_center.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_CENTER_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CENTER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "content/common/content_export.h"
@@ skipping 24 matching lines @@
   virtual void didDisableMediaStreamTrack(
       const WebKit::WebMediaStream& stream,
       const WebKit::WebMediaStreamTrack& component) OVERRIDE;
 
   virtual void didStopLocalMediaStream(
       const WebKit::WebMediaStream& stream) OVERRIDE;
 
   virtual void didCreateMediaStream(
       WebKit::WebMediaStream& stream) OVERRIDE;
 
+  virtual bool didAddMediaStreamTrack(
+      const WebKit::WebMediaStream& stream,
+      const WebKit::WebMediaStreamTrack& track) OVERRIDE;
+
+  virtual bool didRemoveMediaStreamTrack(
+      const WebKit::WebMediaStream& stream,
+      const WebKit::WebMediaStreamTrack& track) OVERRIDE;
+
  private:
   // |rtc_factory_| is a weak pointer and is owned by the RenderThreadImpl.
   // It is valid as long as  RenderThreadImpl exist.
   MediaStreamDependencyFactory* rtc_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamCenter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_CENTER_H_