Migrate ui::Transform to gfx::Transform

ui/compositor/test/test_utils.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/compositor/test/test_utils.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/transform.h"
 
 namespace ui {
 
-void CheckApproximatelyEqual(const Transform& lhs, const Transform& rhs) {
+void CheckApproximatelyEqual(const gfx::Transform& lhs,
+                             const gfx::Transform& rhs) {
   for (int i = 0; i < 4; ++i) {
     for (int j = 0; j < 4; ++j) {
       EXPECT_FLOAT_EQ(lhs.matrix().get(i, j), rhs.matrix().get(i, j));
     }
   }
 }
 
 void CheckApproximatelyEqual(const gfx::Rect& lhs, const gfx::Rect& rhs) {
   EXPECT_FLOAT_EQ(lhs.x(), rhs.x());
   EXPECT_FLOAT_EQ(lhs.y(), rhs.y());
   EXPECT_FLOAT_EQ(lhs.width(), rhs.width());
   EXPECT_FLOAT_EQ(lhs.height(), rhs.height());
 }
 
 }  // namespace ui