Move NV21 colorspace treatment from VideoCapture java to C++

media/video/capture/android/video_capture_device_android.h

Index: media/video/capture/android/video_capture_device_android.h
diff --git a/media/video/capture/android/video_capture_device_android.h b/media/video/capture/android/video_capture_device_android.h
index 297a66dc0cdda64b815a4e38dcd51629d8cbf5df..20966549fe2d18dead2e1392c01e7c54bd5dde67 100644
--- a/media/video/capture/android/video_capture_device_android.h
+++ b/media/video/capture/android/video_capture_device_android.h
@@ -53,8 +53,16 @@ class MEDIA_EXPORT VideoCaptureDeviceAndroid : public VideoCaptureDevice1 {
     kError  // Hit error. User needs to recover by destroying the object.
   };
 
+  // Automatically generated enum to interface with Java world.
+  enum AndroidImageFormat {
+#define DEFINE_ANDROID_IMAGEFORMAT(name, value) name = value,
+#include "media/video/capture/android/imageformat_list.h"
+#undef DEFINE_ANDROID_IMAGEFORMAT
+  };
+
   explicit VideoCaptureDeviceAndroid(const Name& device_name);
   bool Init();
+  VideoPixelFormat GetColorspace();
   void SetErrorState(const std::string& reason);
 
   // Prevent racing on accessing |state_| and |observer_| since both could be