Fixit: Move tab and desktop capture code to new location.

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 ContentVideoCaptureDeviceCore;
-
-// 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
-// underlying render view to be swapped out (e.g., due to navigation or
-// crashes/reloads), without any interruption in capturing.
-class CONTENT_EXPORT WebContentsVideoCaptureDevice
-    : public media::VideoCaptureDevice {
- public:
-  // Construct from a |device_id| string of the form:
-  //   "virtual-media-stream://render_process_id:render_view_id", where
-  // |render_process_id| and |render_view_id| are decimal integers.
-  // |destroy_cb| is invoked on an outside thread once all outstanding objects
-  // are completely destroyed -- this will be some time after the
-  // WebContentsVideoCaptureDevice is itself deleted.
-  // TODO(miu): Passing a destroy callback suggests needing to revisit the
-  // design philosophy of an asynchronous DeAllocate().  http://crbug.com/158641
-  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:
-  WebContentsVideoCaptureDevice(int render_process_id, int render_view_id);
-
-  const scoped_ptr<ContentVideoCaptureDeviceCore> core_;
-
-  DISALLOW_COPY_AND_ASSIGN(WebContentsVideoCaptureDevice);
-};
-
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_WEB_CONTENTS_VIDEO_CAPTURE_DEVICE_H_