Merge 271560 "Add a ChromeOS implementation of VideoCaptureDevic..."

media/video/capture/linux/video_capture_device_linux.h

Index: media/video/capture/linux/video_capture_device_linux.h
===================================================================
--- media/video/capture/linux/video_capture_device_linux.h	(revision 271940)
+++ media/video/capture/linux/video_capture_device_linux.h	(working copy)
@@ -31,6 +31,12 @@
 
   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.
@@ -68,6 +74,11 @@
   int timeout_count_;
   VideoCaptureFormat capture_format_;
 
+  // Clockwise rotation in degrees.  This value should be 0, 90, 180, or 270.
+  // This is only used on |v4l2_thread_| when it is running, or the constructor
+  // thread otherwise.
+  int rotation_;
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceLinux);
 };