Migrate most of cc/ from WebKit::WebTransformationMatrix to gfx::Transform

cc/layer_animation_controller.cc

Index: cc/layer_animation_controller.cc
diff --git a/cc/layer_animation_controller.cc b/cc/layer_animation_controller.cc
index 2dbdde8249eb3b734cfed1cadda16e8559b000d7..6043083fcb85a6878e8f9d53aa7b74ae39c1fe5c 100644
--- a/cc/layer_animation_controller.cc
+++ b/cc/layer_animation_controller.cc
@@ -6,9 +6,9 @@
 
 #include "cc/active_animation.h"
 #include "cc/keyframed_animation_curve.h"
-#include <public/WebTransformationMatrix.h>
+#include "ui/gfx/transform.h"
 
-using WebKit::WebTransformationMatrix;
+using gfx::Transform;
 
 namespace cc {
 
@@ -373,7 +373,7 @@ void LayerAnimationController::tickAnimations(double monotonicTime)
 
             case ActiveAnimation::Transform: {
                 const TransformAnimationCurve* transformAnimationCurve = m_activeAnimations[i]->curve()->toTransformAnimationCurve();
-                const WebTransformationMatrix matrix = transformAnimationCurve->getValue(trimmed);
+                const Transform matrix = transformAnimationCurve->getValue(trimmed).toTransform();
                 if (m_activeAnimations[i]->isFinishedAt(monotonicTime))
                     m_activeAnimations[i]->setRunState(ActiveAnimation::Finished, monotonicTime);