Migrate more functions from MathUtil to gfx::Transform

cc/render_pass_unittest.cc

Index: cc/render_pass_unittest.cc
diff --git a/cc/render_pass_unittest.cc b/cc/render_pass_unittest.cc
index f769483b0845e6ed1bc6adc84a925869f67e8c78..484a9c3d76fdbf00f5a92f11f35dc50d12208221 100644
--- a/cc/render_pass_unittest.cc
+++ b/cc/render_pass_unittest.cc
@@ -12,6 +12,7 @@
 #include "third_party/WebKit/Source/Platform/chromium/public/WebFilterOperations.h"
 #include "third_party/skia/include/effects/SkBlurImageFilter.h"
 #include "ui/gfx/transform.h"
+#include "ui/gfx/transform_util.h"
 
 using cc::TestRenderPass;
 
@@ -34,7 +35,7 @@ TEST(RenderPassTest, copyShouldBeIdenticalExceptIdAndQuads)
 {
     RenderPass::Id id(3, 2);
     gfx::Rect outputRect(45, 22, 120, 13);
-    gfx::Transform transformToRoot = MathUtil::createGfxTransform(1, 0.5, 0.5, -0.5, -1, 0);
+    gfx::Transform transformToRoot = gfx::CreateGfxTransform(1, 0.5, 0.5, -0.5, -1, 0);
     gfx::Rect damageRect(56, 123, 19, 43);
     bool hasTransparentBackground = true;
     bool hasOcclusionFromOutsideTargetSurface = true;