Remove last dependencies on ui/base from ui/gfx

ui/gfx/image/image_family.h

Index: ui/gfx/image/image_family.h
diff --git a/ui/gfx/image/image_family.h b/ui/gfx/image/image_family.h
index c79437136768fb621f49f1863e00f1242c20894c..93e005d18d063fd838e5f9ec56c99733c216d8fd 100644
--- a/ui/gfx/image/image_family.h
+++ b/ui/gfx/image/image_family.h
@@ -25,7 +25,7 @@ class Size;
 // size, with high-DPI bitmap versions; use an Image or ImageSkia for that. Each
 // image in an ImageFamily should have a different logical size (and may also
 // include high-DPI representations).
-class UI_EXPORT ImageFamily {
+class GFX_EXPORT ImageFamily {
  private:
   // An <aspect ratio, DIP width> pair.
   // A 0x0 image has aspect ratio 1.0. 0xN and Nx0 images are treated as 0x0.
@@ -41,7 +41,7 @@ class UI_EXPORT ImageFamily {
  public:
   // Type for iterating over all images in the family, in order.
   // Dereferencing this iterator returns a gfx::Image.
-  class UI_EXPORT const_iterator :
+  class GFX_EXPORT const_iterator :
     std::iterator<std::bidirectional_iterator_tag, const gfx::Image> {
    public:
     const_iterator();