Migrate ui::Transform to gfx::Transform

ui/gfx/transform_util.cc

 // 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.
 
 #include "ui/gfx/transform_util.h"
 
 #include "ui/gfx/point.h"
 
-namespace ui {
+namespace gfx {
 
 Transform GetScaleTransform(const gfx::Point& anchor, float scale) {
-  ui::Transform transform;
+  gfx::Transform transform;
   transform.ConcatScale(scale, scale);
   transform.ConcatTranslate(anchor.x() * (1 - scale),
                             anchor.y() * (1 - scale));
   return transform;
 }
 
 }  // namespace ui