Refactor GL surface format handling

gpu/ipc/service/image_transport_surface_win.cc

Index: gpu/ipc/service/image_transport_surface_win.cc
diff --git a/gpu/ipc/service/image_transport_surface_win.cc b/gpu/ipc/service/image_transport_surface_win.cc
index 8ba97f66a3bd4e079dbc9a0e958525872f355e1d..a4b0a5d8b584152fb0f57aa4e0485e1f7adbf8c9 100644
--- a/gpu/ipc/service/image_transport_surface_win.cc
+++ b/gpu/ipc/service/image_transport_surface_win.cc
@@ -21,7 +21,7 @@ namespace gpu {
 scoped_refptr<gl::GLSurface> ImageTransportSurface::CreateNativeSurface(
     base::WeakPtr<ImageTransportSurfaceDelegate> delegate,
     SurfaceHandle surface_handle,
-    gl::GLSurface::Format format) {
+    gl::GLSurfaceFormat format) {
   DCHECK_NE(surface_handle, kNullSurfaceHandle);
 
   scoped_refptr<gl::GLSurface> surface;