• FlutterDesktopGpuPreference : flutter_windows.h
• FlutterDesktopGpuSurfaceType : flutter_texture_registrar.h
• FlutterDesktopPixelFormat : flutter_texture_registrar.h
• FlutterDesktopTextureType : flutter_texture_registrar.h
• FlutterDesktopUIThreadPolicy : flutter_windows.h