Use SkMatrix44 for the underlying implementation of ui::Transform

ui/gfx/compositor/layer_animator.h

 // Copyright (c) 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.
 
 #ifndef UI_GFX_COMPOSITOR_LAYER_ANIMATOR_H_
 #define UI_GFX_COMPOSITOR_LAYER_ANIMATOR_H_
 #pragma once
 
 #include <map>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "third_party/skia/include/core/SkScalar.h"
+#include "third_party/skia/include/utils/SkMatrix44.h"
 #include "ui/base/animation/animation_delegate.h"
 #include "ui/base/animation/tween.h"
 #include "ui/gfx/point.h"
 
 namespace ui {
 
 class Layer;
 class MultiAnimation;
 class Transform;
 
@@ skipping 37 matching lines @@
   struct LocationParams {
     int start_x;
     int start_y;
     int target_x;
     int target_y;
   };
 
   // Parameters used whe animating the transform.
   struct TransformParams {
     // TODO: make 4x4 whe Transform is updated.
-    SkScalar start[9];
-    SkScalar target[9];
+    SkMScalar start[16];
+    SkMScalar target[16];
   };
 
   union Params {
     LocationParams location;
     TransformParams transform;
   };
 
   // Used for tracking the animation of a particular property.
   struct Element {
     Params params;
@@ skipping 23 matching lines @@
 
   // Type of animation for newly created animations.
   ui::Tween::Type animation_type_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerAnimator);
 };
 
 }  // namespace ui
 
 #endif  // UI_GFX_COMPOSITOR_LAYER_ANIMATOR_H_