Migrate more functions from MathUtil to gfx::Transform

cc/occlusion_tracker_unittest.cc

 // Copyright 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 "cc/occlusion_tracker.h"
 
 #include "cc/layer.h"
 #include "cc/layer_animation_controller.h"
 #include "cc/layer_impl.h"
 #include "cc/layer_tree_host_common.h"
@@ skipping 1869 matching lines @@
 
 MAIN_AND_IMPL_THREAD_TEST(OcclusionTrackerTestOpaqueContentsRegionNonEmpty);
 
 template<class Types>
 class OcclusionTrackerTest3dTransform : public OcclusionTrackerTest<Types> {
 protected:
     OcclusionTrackerTest3dTransform(bool opaqueLayers) : OcclusionTrackerTest<Types>(opaqueLayers) {}
     void runMyTest()
     {
         gfx::Transform transform;
-        MathUtil::rotateEulerAngles(&transform, 0, 30, 0);
+        transform.RotateAboutYAxis(30);
 
         typename Types::ContentLayerType* parent = this->createRoot(this->identityMatrix, gfx::PointF(0, 0), gfx::Size(300, 300));
         typename Types::LayerType* container = this->createLayer(parent, this->identityMatrix, gfx::PointF(0, 0), gfx::Size(300, 300));
         typename Types::ContentLayerType* layer = this->createDrawingLayer(container, transform, gfx::PointF(100, 100), gfx::Size(200, 200), true);
         this->calcDrawEtc(parent);
 
         TestOcclusionTrackerWithClip<typename Types::LayerType, typename Types::RenderSurfaceType> occlusion(gfx::Rect(0, 0, 1000, 1000));
         this->enterLayer(layer, occlusion);
 
         // The layer is rotated in 3d but without preserving 3d, so it only gets resized.
@@ skipping 1216 matching lines @@
 
         EXPECT_EQ(gfx::Rect().ToString(), occlusion.occlusionFromOutsideTarget().ToString());
         EXPECT_EQ(gfx::Rect(gfx::Point(), trackingSize).ToString(), occlusion.occlusionFromInsideTarget().ToString());
     }
 };
 
 ALL_OCCLUSIONTRACKER_TEST(OcclusionTrackerTestMinimumTrackingSize);
 
 }  // namespace
 }  // namespace cc