Remove parts of //cc we aren't using

cc/animation/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_ANIMATION_TRANSFORM_OPERATION_H_
-#define CC_ANIMATION_TRANSFORM_OPERATION_H_
-
-#include "ui/gfx/transform.h"
-
-namespace gfx {
-class BoxF;
-}
-
-namespace cc {
-
-struct TransformOperation {
-  enum Type {
-    TRANSFORM_OPERATION_TRANSLATE,
-    TRANSFORM_OPERATION_ROTATE,
-    TRANSFORM_OPERATION_SCALE,
-    TRANSFORM_OPERATION_SKEW,
-    TRANSFORM_OPERATION_PERSPECTIVE,
-    TRANSFORM_OPERATION_MATRIX,
-    TRANSFORM_OPERATION_IDENTITY
-  };
-
-  TransformOperation() : type(TRANSFORM_OPERATION_IDENTITY) {}
-
-  Type type;
-  gfx::Transform matrix;
-
-  union {
-    SkMScalar perspective_depth;
-
-    struct {
-      SkMScalar x, y;
-    } skew;
-
-    struct {
-      SkMScalar x, y, z;
-    } scale;
-
-    struct {
-      SkMScalar x, y, z;
-    } translate;
-
-    struct {
-      struct {
-        SkMScalar x, y, z;
-      } axis;
-
-      SkMScalar angle;
-    } rotate;
-  };
-
-  bool IsIdentity() const;
-  static bool BlendTransformOperations(const TransformOperation* from,
-                                       const TransformOperation* to,
-                                       SkMScalar progress,
-                                       gfx::Transform* result);
-
-  static bool BlendedBoundsForBox(const gfx::BoxF& box,
-                                  const TransformOperation* from,
-                                  const TransformOperation* to,
-                                  SkMScalar min_progress,
-                                  SkMScalar max_progress,
-                                  gfx::BoxF* bounds);
-};
-
-}  // namespace cc
-
-#endif  // CC_ANIMATION_TRANSFORM_OPERATION_H_