Add a ChromeOS implementation of VideoCaptureDevice

media/video/capture/linux/video_capture_device_linux.h

Index: media/video/capture/linux/video_capture_device_linux.h
diff --git a/media/video/capture/linux/video_capture_device_linux.h b/media/video/capture/linux/video_capture_device_linux.h
index 6a8dcee126163e987cdbd1eb8961b3b05da2b9c2..e0b8cfacf3841a3a2c4244e1ee670e50f98dc1b4 100644
--- a/media/video/capture/linux/video_capture_device_linux.h
+++ b/media/video/capture/linux/video_capture_device_linux.h
@@ -31,6 +31,12 @@ class VideoCaptureDeviceLinux : public VideoCaptureDevice {
 
   virtual void StopAndDeAllocate() OVERRIDE;
 
+ protected:
+  void SetRotation(int rotation);
+
+  // Once |v4l2_thread_| is started, only called on that thread.
+  void SetRotationOnV4L2Thread(int rotation);
+
  private:
   enum InternalState {
     kIdle,  // The device driver is opened but camera is not in use.
@@ -67,6 +73,7 @@ class VideoCaptureDeviceLinux : public VideoCaptureDevice {
   int buffer_pool_size_;  // Number of allocated buffers.
   int timeout_count_;
   VideoCaptureFormat capture_format_;
+  int rotation_;  // Clockwise rotation.

[mcasas, 2014/05/11 18:41:25]

Comment that |rotation_| is used in |v4l2_thread_|
when this is active or in the constructor thread
(which is the IO thread) otherwise?

[Zachary Kuznia, 2014/05/12 02:54:18]

Done.

 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceLinux);
 };