Remove screen capturers from media/video/capture/screen.

media/video/capture/screen/shared_desktop_frame.h

-// Copyright 2013 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 MEDIA_VIDEO_CAPTURE_SCREEN_SHARED_DESKTOP_FRAME_H_
-#define MEDIA_VIDEO_CAPTURE_SCREEN_SHARED_DESKTOP_FRAME_H_
-
-#include "base/memory/ref_counted.h"
-#include "third_party/webrtc/modules/desktop_capture/desktop_frame.h"
-
-namespace media {
-
-// SharedDesktopFrame is a DesktopFrame that may have multiple instances all
-// sharing the same buffer.
-class SharedDesktopFrame : public webrtc::DesktopFrame {
- public:
-  virtual ~SharedDesktopFrame();
-
-  static SharedDesktopFrame* Wrap(webrtc::DesktopFrame* desktop_frame);
-
-  // Returns the underlying instance of DesktopFrame.
-  webrtc::DesktopFrame* GetUnderlyingFrame();
-
-  // Creates a clone of this object.
-  SharedDesktopFrame* Share();
-
-  // Checks if the frame is currently shared. If it returns false it's
-  // guaranteed that there are no clones of the object.
-  bool IsShared();
-
- private:
-  class Core;
-
-  SharedDesktopFrame(scoped_refptr<Core> core);
-
-  scoped_refptr<Core> core_;
-
-  DISALLOW_COPY_AND_ASSIGN(SharedDesktopFrame);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_VIDEO_CAPTURE_SCREEN_SHARED_DESKTOP_FRAME_H_