Adds a gfx_export.h to ui/gfx and converts all code in ui/gfx to

ui/gfx/point3_f.h

 // Copyright (c) 2011 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_POINT3_F_H_
 #define UI_GFX_POINT3_F_H_
 
 #include <string>
 
-#include "ui/base/ui_export.h"
+#include "ui/gfx/gfx_export.h"
 #include "ui/gfx/point_f.h"
 #include "ui/gfx/vector3d_f.h"
 
 namespace gfx {
 
 // A point has an x, y and z coordinate.
 class UI_EXPORT Point3F {
  public:
   Point3F() : x_(0), y_(0), z_(0) {}
 
@@ skipping 90 matching lines @@
   return Point3F(p.x() * x_scale, p.y() * y_scale, p.z() * z_scale);
 }
 
 inline Point3F ScalePoint(const Point3F& p, float scale) {
   return ScalePoint(p, scale, scale, scale);
 }
 
 }  // namespace gfx
 
 #endif  // UI_GFX_POINT3_F_H_