Remove last dependencies on ui/base from ui/gfx

ui/gfx/size_f.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_GFX_SIZE_F_H_
 #define UI_GFX_SIZE_F_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "ui/gfx/gfx_export.h"
 #include "ui/gfx/size_base.h"
 
 namespace gfx {
 
 // A floating version of gfx::Size.
-class UI_EXPORT SizeF : public SizeBase<SizeF, float> {
+class GFX_EXPORT SizeF : public SizeBase<SizeF, float> {
  public:
   SizeF() : SizeBase<SizeF, float>(0, 0) {}
   SizeF(float width, float height) : SizeBase<SizeF, float>(width, height) {}
   ~SizeF() {}
 
   void Scale(float scale) {
     Scale(scale, scale);
   }
 
   void Scale(float x_scale, float y_scale) {
     SetSize(width() * x_scale, height() * y_scale);
   }
 
   std::string ToString() const;
 };
 
 inline bool operator==(const SizeF& lhs, const SizeF& rhs) {
   return lhs.width() == rhs.width() && lhs.height() == rhs.height();
 }
 
 inline bool operator!=(const SizeF& lhs, const SizeF& rhs) {
   return !(lhs == rhs);
 }
 
-UI_EXPORT SizeF ScaleSize(const SizeF& p, float x_scale, float y_scale);
+GFX_EXPORT SizeF ScaleSize(const SizeF& p, float x_scale, float y_scale);
 
 inline SizeF ScaleSize(const SizeF& p, float scale) {
   return ScaleSize(p, scale, scale);
 }
 
 #if !defined(COMPILER_MSVC)
 extern template class SizeBase<SizeF, float>;
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GFX_SIZE_F_H_