Windows video capture: Remove duplicated code from GetDeviceSupportedFormats*

media/video/capture/win/video_capture_device_win.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.
 
 // Windows specific implementation of VideoCaptureDevice.
 // DirectShow is used for capturing. DirectShow provide its own threads
 // for capturing.
 
 #ifndef MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_
 #define MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_
@@ skipping 56 matching lines @@
   virtual ~VideoCaptureDeviceWin();
   // Opens the device driver for this device.
   bool Init();
 
   // VideoCaptureDevice implementation.
   virtual void AllocateAndStart(
       const VideoCaptureParams& params,
       scoped_ptr<VideoCaptureDevice::Client> client) override;
   virtual void StopAndDeAllocate() override;
 
+  void GetDeviceSupportedFormats(VideoCaptureFormats* formats);
+
  private:
   enum InternalState {
     kIdle,  // The device driver is opened but camera is not in use.
     kCapturing,  // Video is being captured.
     kError  // Error accessing HW functions.
             // User needs to recover by destroying the object.
   };
 
   // Implements SinkFilterObserver.
   virtual void FrameReceived(const uint8* buffer, int length);
@@ skipping 28 matching lines @@
   // Map of all capabilities this device support.
   CapabilityList capabilities_;
   VideoCaptureFormat capture_format_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceWin);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_WIN_H_