Remove last dependencies on ui/base from ui/gfx

ui/gfx/image/image_skia_util_ios.h

Index: ui/gfx/image/image_skia_util_ios.h
diff --git a/ui/gfx/image/image_skia_util_ios.h b/ui/gfx/image/image_skia_util_ios.h
index 6c5f30dfcf7f2387c7ae90155b1dc8b43fd22801..6576ff8da7a4e05fbe367d8fc8aa86377f4537e5 100644
--- a/ui/gfx/image/image_skia_util_ios.h
+++ b/ui/gfx/image/image_skia_util_ios.h
@@ -18,22 +18,22 @@ class ImageSkia;
 class ImageSkiaRep;
 
 // Converts to ImageSkia from UIImage.
-UI_EXPORT gfx::ImageSkia ImageSkiaFromUIImage(UIImage* image);
+GFX_EXPORT gfx::ImageSkia ImageSkiaFromUIImage(UIImage* image);
 
 // Converts to an ImageSkiaRep of |scale_factor| from UIImage.
 // |scale| is passed explicitly in order to allow this method to be used
 // with a |scale| which is not supported by the platform.
-UI_EXPORT gfx::ImageSkiaRep ImageSkiaRepOfScaleFromUIImage(
+GFX_EXPORT gfx::ImageSkiaRep ImageSkiaRepOfScaleFromUIImage(
     UIImage* image,
     float scale);
 
 // Converts to UIImage from ImageSkia. The returned UIImage will be at the scale
 // of the ImageSkiaRep in |image_skia| which most closely matches the device's
 // scale factor (eg Retina iPad -> 2x). Returns an autoreleased UIImage.
-UI_EXPORT UIImage* UIImageFromImageSkia(const gfx::ImageSkia& image_skia);
+GFX_EXPORT UIImage* UIImageFromImageSkia(const gfx::ImageSkia& image_skia);
 
 // Converts to UIImage from ImageSkiaRep. Returns an autoreleased UIImage.
-UI_EXPORT UIImage* UIImageFromImageSkiaRep(
+GFX_EXPORT UIImage* UIImageFromImageSkiaRep(
     const gfx::ImageSkiaRep& image_skia_rep);
 
 }  // namespace gfx