Rotate frames correctly for back camera

media/capture/video/linux/video_capture_device_chromeos.h

Index: media/capture/video/linux/video_capture_device_chromeos.h
diff --git a/media/capture/video/linux/video_capture_device_chromeos.h b/media/capture/video/linux/video_capture_device_chromeos.h
index cd33a5cda0ac270c90554aff0b3af1eace54ead4..a61b6bd7cd50ecf922c2ad01e4363616e296263b 100644
--- a/media/capture/video/linux/video_capture_device_chromeos.h
+++ b/media/capture/video/linux/video_capture_device_chromeos.h
@@ -5,7 +5,9 @@
 #ifndef MEDIA_CAPTURE_VIDEO_LINUX_VIDEO_CAPTURE_DEVICE_CHROMEOS_H_
 #define MEDIA_CAPTURE_VIDEO_LINUX_VIDEO_CAPTURE_DEVICE_CHROMEOS_H_
 
+#include "base/lazy_instance.h"
 #include "base/macros.h"
+#include "media/capture/video/linux/camera_characteristics.h"
 #include "media/capture/video/linux/video_capture_device_linux.h"
 
 namespace display {
@@ -24,11 +26,16 @@ class VideoCaptureDeviceChromeOS : public VideoCaptureDeviceLinux {
       const VideoCaptureDeviceDescriptor& device_descriptor);
   ~VideoCaptureDeviceChromeOS() override;
 
+ protected:
+  void SetRotation(int rotation) override;
+
  private:
   class ScreenObserverDelegate;
 
   void SetDisplayRotation(const display::Display& display);
   scoped_refptr<ScreenObserverDelegate> screen_observer_delegate_;
+  int lens_facing_;
+  base::LazyInstance<CameraCharacteristics> camera_characteristics_;

[kcwu, 2016/11/24 15:48:52]

This should be static or global, otherwise no point to use LazyInstance<>.

[shenghao, 2016/11/28 08:52:04]

Done.

   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceChromeOS);
 };