Add support to send optimal format as part of ScheduleOverlayPlane

ui/gl/gl_surface_overlay.h

Index: ui/gl/gl_surface_overlay.h
diff --git a/ui/gl/gl_surface_overlay.h b/ui/gl/gl_surface_overlay.h
index df6923ab6db1baf8dbb5c212b9bdf7051450ae4f..713a505dbdcc6f6f6232b0bb16b65ce8f3010a9b 100644
--- a/ui/gl/gl_surface_overlay.h
+++ b/ui/gl/gl_surface_overlay.h
@@ -20,9 +20,11 @@ class GLSurfaceOverlay {
  public:
   GLSurfaceOverlay(int z_order,
                    OverlayTransform transform,
+                   gfx::BufferFormat storage_format,
                    gl::GLImage* image,
                    const Rect& bounds_rect,
-                   const RectF& crop_rect);
+                   const RectF& crop_rect,
+                   bool handle_scaling);
   ~GLSurfaceOverlay();
 
   // Schedule the image as an overlay plane to be shown at swap time for
@@ -32,9 +34,11 @@ class GLSurfaceOverlay {
  private:
   int z_order_;
   OverlayTransform transform_;
+  gfx::BufferFormat storage_format_;
   scoped_refptr<gl::GLImage> image_;
   Rect bounds_rect_;
   RectF crop_rect_;
+  bool handle_scaling_;
 };
 
 }  // namespace gfx