Remove last dependencies on ui/base from ui/gfx

ui/gfx/size_conversions.h

Index: ui/gfx/size_conversions.h
diff --git a/ui/gfx/size_conversions.h b/ui/gfx/size_conversions.h
index f642c4cc7cf303e3760056abd76e587c5afe5a58..af68195b55bdfdb236a4dbff494bbe1ec4db255f 100644
--- a/ui/gfx/size_conversions.h
+++ b/ui/gfx/size_conversions.h
@@ -11,13 +11,13 @@
 namespace gfx {
 
 // Returns a Size with each component from the input SizeF floored.
-UI_EXPORT Size ToFlooredSize(const SizeF& size);
+GFX_EXPORT Size ToFlooredSize(const SizeF& size);
 
 // Returns a Size with each component from the input SizeF ceiled.
-UI_EXPORT Size ToCeiledSize(const SizeF& size);
+GFX_EXPORT Size ToCeiledSize(const SizeF& size);
 
 // Returns a Size with each component from the input SizeF rounded.
-UI_EXPORT Size ToRoundedSize(const SizeF& size);
+GFX_EXPORT Size ToRoundedSize(const SizeF& size);
 
 }  // namespace gfx