Reland 237634 and 237645.

content/browser/renderer_host/media/desktop_capture_device_ash.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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_ASH_H_
+#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_ASH_H_
+
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
+#include "content/public/common/desktop_media_id.h"
+#include "media/video/capture/video_capture_device.h"
+
+namespace aura {
+class Window;
+}  // namespace aura
+
+namespace content {
+
+class VideoCaptureDeviceImpl;
+
+// An implementation of VideoCaptureDevice that mirrors the desktop on Ash.
+class CONTENT_EXPORT DesktopCaptureDeviceAsh
+    : public media::VideoCaptureDevice {
+ public:
+  // Creates a VideoCaptureDevice for the Ash desktop.
+  static media::VideoCaptureDevice* Create(const DesktopMediaID& source);
+
+  virtual ~DesktopCaptureDeviceAsh();
+
+  // VideoCaptureDevice implementation.
+  virtual void AllocateAndStart(const media::VideoCaptureParams& params,
+                                scoped_ptr<Client> client) OVERRIDE;
+  virtual void StopAndDeAllocate() OVERRIDE;
+
+ private:
+  DesktopCaptureDeviceAsh(const DesktopMediaID& source);
+
+  const scoped_ptr<class VideoCaptureDeviceImpl> impl_;
+
+  DISALLOW_COPY_AND_ASSIGN(DesktopCaptureDeviceAsh);
+};
+
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_DESKTOP_CAPTURE_DEVICE_ASH_H_