Add a ChromeOS implementation of VideoCaptureDevice

media/video/capture/linux/video_capture_device_chromeos.h

+// Copyright 2014 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_LINUX_VIDEO_CAPTURE_DEVICE_CHROMEOS_H_
+#define MEDIA_VIDEO_CAPTURE_LINUX_VIDEO_CAPTURE_DEVICE_CHROMEOS_H_
+
+#include "media/video/capture/linux/video_capture_device_linux.h"
+
+namespace gfx {
+class Display;
+}  // namespace gfx
+
+namespace media {
+
+// This class is functionally the same as VideoCaptureDeviceLinux, with the
+// exception that it is aware of the orientation of the internal Display.  When
+// the internal Display is rotated, the frames captured are rotated to match.
+class VideoCaptureDeviceChromeOS : public VideoCaptureDeviceLinux {
+ public:
+  explicit VideoCaptureDeviceChromeOS(const Name& device_name);
+  virtual ~VideoCaptureDeviceChromeOS();
+
+  void SetDisplayRotation(const gfx::Display& display);
+
+ private:
+  class ScreenObserverDelegate;
+
+  scoped_refptr<ScreenObserverDelegate> screen_observer_delegate_;
+  DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceChromeOS);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_VIDEO_CAPTURE_LINUX_VIDEO_CAPTURE_DEVICE_CHROMEOS_H_