Reland 237634 and 237645.

content/browser/renderer_host/media/web_contents_video_capture_device.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_BROWSER_RENDERER_HOST_MEDIA_WEB_CONTENTS_VIDEO_CAPTURE_DEVICE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_WEB_CONTENTS_VIDEO_CAPTURE_DEVICE_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 #include "media/video/capture/video_capture_device.h"
 
 namespace content {
 
-class RenderWidgetHost;
+class VideoCaptureDeviceImpl;
 
 // A virtualized VideoCaptureDevice that mirrors the displayed contents of a
 // tab (accessed via its associated WebContents instance), producing a stream of
 // video frames.
 //
 // An instance is created by providing a device_id.  The device_id contains the
 // routing ID for a RenderViewHost, and from the RenderViewHost instance, a
 // reference to its associated WebContents instance is acquired.  From then on,
 // WebContentsVideoCaptureDevice will capture from whatever render view is
 // currently associated with that WebContents instance.  This allows the
@@ skipping 13 matching lines @@
   static media::VideoCaptureDevice* Create(const std::string& device_id);
 
   virtual ~WebContentsVideoCaptureDevice();
 
   // VideoCaptureDevice implementation.
   virtual void AllocateAndStart(const media::VideoCaptureParams& params,
                                 scoped_ptr<Client> client) OVERRIDE;
   virtual void StopAndDeAllocate() OVERRIDE;
 
  private:
-  class Impl;
-
   WebContentsVideoCaptureDevice(int render_process_id, int render_view_id);
 
-  const scoped_ptr<Impl> impl_;
+  const scoped_ptr<VideoCaptureDeviceImpl> impl_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsVideoCaptureDevice);
 };
 
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_WEB_CONTENTS_VIDEO_CAPTURE_DEVICE_H_