Switch DesktopEnvironment to return a DesktopCapturer.

remoting/host/shaped_screen_capturer.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 REMOTING_HOST_SHAPED_SCREEN_CAPTURER_H_
-#define REMOTING_HOST_SHAPED_SCREEN_CAPTURER_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "third_party/webrtc/modules/desktop_capture/screen_capturer.h"
-
-namespace remoting {
-
-class DesktopShapeTracker;
-
-// Screen capturer that also captures desktop shape.
-class ShapedScreenCapturer : public webrtc::ScreenCapturer,
-                             public webrtc::DesktopCapturer::Callback {
- public:
-  static scoped_ptr<ShapedScreenCapturer> Create(
-      webrtc::DesktopCaptureOptions options);
-
-  ShapedScreenCapturer(scoped_ptr<webrtc::ScreenCapturer> screen_capturer,
-                       scoped_ptr<DesktopShapeTracker> shape_tracker);
-  virtual ~ShapedScreenCapturer();
-
-  // webrtc::ScreenCapturer interface.
-  virtual void Start(webrtc::ScreenCapturer::Callback* callback) OVERRIDE;
-  virtual void Capture(const webrtc::DesktopRegion& region) OVERRIDE;
-  virtual void SetMouseShapeObserver(
-      MouseShapeObserver* mouse_shape_observer) OVERRIDE;
-  virtual bool GetScreenList(ScreenList* screens) OVERRIDE;
-  virtual bool SelectScreen(webrtc::ScreenId id) OVERRIDE;
-
- private:
-  // webrtc::ScreenCapturer::Callback interface.
-  virtual webrtc::SharedMemory* CreateSharedMemory(size_t size) OVERRIDE;
-  virtual void OnCaptureCompleted(webrtc::DesktopFrame* frame) OVERRIDE;
-
-  scoped_ptr<webrtc::ScreenCapturer> screen_capturer_;
-  scoped_ptr<DesktopShapeTracker> shape_tracker_;
-  webrtc::ScreenCapturer::Callback* callback_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShapedScreenCapturer);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_SHAPED_SCREEN_CAPTURER_H_