[PPAPI][MediaStream] Support configure for video input.

ppapi/proxy/media_stream_video_track_resource.h

 // Copyright 2014 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 PPAPI_PROXY_MEDIA_STREAM_VIDEO_TRACK_RESOURCE_H_
 #define PPAPI_PROXY_MEDIA_STREAM_VIDEO_TRACK_RESOURCE_H_
 
 #include <map>
 
 #include "base/memory/ref_counted.h"
@@ skipping 34 matching lines @@
   virtual void Close() OVERRIDE;
 
   // MediaStreamBufferManager::Delegate overrides:
   virtual void OnNewBufferEnqueued() OVERRIDE;
 
  private:
   PP_Resource GetVideoFrame();
 
   void ReleaseFrames();
 
+  // IPC message handlers.
+  void OnPluginMsgConfigureReply(const ResourceMessageReplyParams& params);
+
   // Allocated frame resources by |GetFrame()|.
   typedef std::map<PP_Resource, scoped_refptr<VideoFrameResource> > FrameMap;
   FrameMap frames_;
 
   PP_Resource* get_frame_output_;
+  scoped_refptr<TrackedCallback> get_frame_callback_;
 
-  scoped_refptr<TrackedCallback> get_frame_callback_;
+  scoped_refptr<TrackedCallback> configure_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoTrackResource);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_MEDIA_STREAM_VIDEO_TRACK_RESOURCE_H_