ui: Cleanup class/struct forward declarations

media/capture/video/video_capture_device_factory.h

Index: media/capture/video/video_capture_device_factory.h
diff --git a/media/capture/video/video_capture_device_factory.h b/media/capture/video/video_capture_device_factory.h
index 33da2320b92e3756a6f91f1fc69cab4886ca4f42..652320af05a5a1b96de259e8d83b09bff98c1a45 100644
--- a/media/capture/video/video_capture_device_factory.h
+++ b/media/capture/video/video_capture_device_factory.h
@@ -45,7 +45,6 @@ class CAPTURE_EXPORT VideoCaptureDeviceFactory {
       const VideoCaptureDeviceDescriptor& device_descriptor,
       VideoCaptureFormats* supported_formats) = 0;
 
- protected:
   // Gets descriptors of all video capture devices connected.
   // Used by the default implementation of EnumerateDevices().
   // Note: The same physical device may appear more than once if it is
@@ -53,6 +52,7 @@ class CAPTURE_EXPORT VideoCaptureDeviceFactory {
   virtual void GetDeviceDescriptors(
       VideoCaptureDeviceDescriptors* device_descriptors) = 0;
 
+ protected:
   base::ThreadChecker thread_checker_;
 
  private: