Finish migrating cc/ from WebKit::WebTransformationMatrix to gfx::Transform

cc/transform_operation.h

 // Copyright 2013 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 CC_TRANSFORM_OPERATION_H_
 #define CC_TRANSFORM_OPERATION_H
 
-#include "third_party/WebKit/Source/Platform/chromium/public/WebTransformationMatrix.h"
+#include "ui/gfx/transform.h"
 
 namespace cc {
 
 struct TransformOperation {
   enum Type {
     TransformOperationTranslate,
     TransformOperationRotate,
     TransformOperationScale,
     TransformOperationSkew,
     TransformOperationPerspective,
     TransformOperationMatrix,
     TransformOperationIdentity
   };
 
   TransformOperation()
       : type(TransformOperationIdentity) {
   }
 
   Type type;
-  WebKit::WebTransformationMatrix matrix;
+  gfx::Transform matrix;
 
   union {
     double perspective_depth;
 
     struct {
       double x, y;
     } skew;
 
     struct {
       double x, y, z;
     } scale;
 
     struct {
       double x, y, z;
     } translate;
 
     struct {
       struct {
         double x, y, z;
       } axis;
 
       double angle;
     } rotate;
   };
 
   bool IsIdentity() const;
   static bool BlendTransformOperations(const TransformOperation* from,
                                        const TransformOperation* to,
                                        double progress,
-                                       WebKit::WebTransformationMatrix& result);
+                                       gfx::Transform& result);
 };
 
 }  // namespace cc
 
 #endif  // CC_TRANSFORM_OPERATION_H_