Added supported formats caching to VideoCaptureManager.

content/browser/renderer_host/media/video_capture_controller.h

Index: content/browser/renderer_host/media/video_capture_controller.h
diff --git a/content/browser/renderer_host/media/video_capture_controller.h b/content/browser/renderer_host/media/video_capture_controller.h
index badab3b9b5ec17a1c6c875dc14e1cdb71831b5d2..8658cdeb27805db86e83ed4ed9459df51702ed0b 100644
--- a/content/browser/renderer_host/media/video_capture_controller.h
+++ b/content/browser/renderer_host/media/video_capture_controller.h
@@ -104,6 +104,8 @@ class CONTENT_EXPORT VideoCaptureController {
                     VideoCaptureControllerEventHandler* event_handler,
                     int buffer_id);
 
+  const media::VideoCaptureFormat& GetVideoCaptureFormat() const;
+
  private:
   class VideoCaptureDeviceClient;
 
@@ -141,6 +143,8 @@ class CONTENT_EXPORT VideoCaptureController {
   // 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);