Migrate more functions from MathUtil to gfx::Transform

cc/layer_sorter_unittest.cc

 // Copyright 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.
 
 #include "cc/layer_sorter.h"
 
 #include "cc/layer_impl.h"
 #include "cc/math_util.h"
 #include "cc/single_thread_proxy.h"
 #include "cc/test/fake_impl_proxy.h"
@@ skipping 152 matching lines @@
     transformA.Translate3d(-15, 0, -2);
     transformA.Translate(-5, -5);
     LayerShape layerA(10, 10, perspectiveMatrix * transformA);
 
     // With this sequence of transforms, when layer B is correctly clipped, it will be
     // visible on the left half of the projection plane, in front of layerA. When it is
     // not clipped, its bounds will actually incorrectly appear much smaller and the
     // correct sorting dependency will not be found.
     gfx::Transform transformB;
     transformB.Translate3d(0, 0, 0.7);
-    MathUtil::rotateEulerAngles(&transformB, 0, 45, 0);
+    transformB.RotateAboutYAxis(45);
     transformB.Translate(-5, -5);
     LayerShape layerB(10, 10, perspectiveMatrix * transformB);
 
     // Sanity check that the test case actually covers the intended scenario, where part
     // of layer B go behind the w = 0 plane.
     gfx::QuadF testQuad = gfx::QuadF(gfx::RectF(-0.5, -0.5, 1, 1));
     bool clipped = false;
     MathUtil::mapQuad(perspectiveMatrix * transformB, testQuad, clipped);
     ASSERT_TRUE(clipped);
 
@@ skipping 74 matching lines @@
     ASSERT_EQ(static_cast<size_t>(5), layerList.size());
     EXPECT_EQ(3, layerList[0]->id());
     EXPECT_EQ(4, layerList[1]->id());
     EXPECT_EQ(1, layerList[2]->id());
     EXPECT_EQ(2, layerList[3]->id());
     EXPECT_EQ(5, layerList[4]->id());
 }
 
 }  // namespace
 }  // namespace cc