Added supported formats caching to VideoCaptureManager.

content/browser/renderer_host/media/video_capture_controller.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.
 //
 // VideoCaptureController is the glue between a VideoCaptureDevice and all
 // VideoCaptureHosts that have connected to it. A controller exists on behalf of
 // one (and only one) VideoCaptureDevice; both are owned by the
 // VideoCaptureManager.
 //
 // The VideoCaptureController is responsible for:
@@ skipping 86 matching lines @@
   // API called directly by VideoCaptureManager in case the device is
   // prematurely closed.
   void StopSession(int session_id);
 
   // Return a buffer previously given in
   // VideoCaptureControllerEventHandler::OnBufferReady.
   void ReturnBuffer(const VideoCaptureControllerID& id,
                     VideoCaptureControllerEventHandler* event_handler,
                     int buffer_id);
 
+  const media::VideoCaptureFormat& GetVideoCaptureFormat() const;
+
  private:
   class VideoCaptureDeviceClient;
 
   struct ControllerClient;
   typedef std::list<ControllerClient*> ControllerClients;
 
   // Worker functions on IO thread. Called by the VideoCaptureDeviceClient.
   void DoIncomingCapturedI420BufferOnIOThread(
       scoped_refptr<media::VideoCaptureDevice::Client::Buffer> buffer,
       const gfx::Size& dimensions,
@@ skipping 17 matching lines @@
   // The pool of shared-memory buffers used for capturing.
   const scoped_refptr<VideoCaptureBufferPool> buffer_pool_;
 
   // All clients served by this controller.
   ControllerClients controller_clients_;
 
   // Takes on only the states 'STARTED' and 'ERROR'. 'ERROR' is an absorbing
   // state which stops the flow of data to clients.
   VideoCaptureState state_;
 
+  media::VideoCaptureFormat video_capture_format_;
+
   base::WeakPtrFactory<VideoCaptureController> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoCaptureController);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_H_