Remove parts of //cc we aren't using

cc/animation/transform_operations.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_OPERATIONS_H_
-#define CC_ANIMATION_TRANSFORM_OPERATIONS_H_
-
-#include <vector>
-
-#include "base/memory/scoped_ptr.h"
-#include "cc/animation/transform_operation.h"
-#include "cc/base/cc_export.h"
-#include "ui/gfx/transform.h"
-
-namespace gfx {
-class BoxF;
-struct DecomposedTransform;
-}
-
-namespace cc {
-
-// Transform operations are a decomposed transformation matrix. It can be
-// applied to obtain a gfx::Transform at any time, and can be blended
-// intelligently with other transform operations, so long as they represent the
-// same decomposition. For example, if we have a transform that is made up of
-// a rotation followed by skew, it can be blended intelligently with another
-// transform made up of a rotation followed by a skew. Blending is possible if
-// we have two dissimilar sets of transform operations, but the effect may not
-// be what was intended. For more information, see the comments for the blend
-// function below.
-class CC_EXPORT TransformOperations {
- public:
-  TransformOperations();
-  TransformOperations(const TransformOperations& other);
-  ~TransformOperations();
-
-  // Returns a transformation matrix representing these transform operations.
-  gfx::Transform Apply() const;
-
-  // Given another set of transform operations and a progress in the range
-  // [0, 1], returns a transformation matrix representing the intermediate
-  // value. If this->MatchesTypes(from), then each of the operations are
-  // blended separately and then combined. Otherwise, the two sets of
-  // transforms are baked to matrices (using apply), and the matrices are
-  // then decomposed and interpolated. For more information, see
-  // http://www.w3.org/TR/2011/WD-css3-2d-transforms-20111215/#matrix-decomposition.
-  gfx::Transform Blend(const TransformOperations& from,
-                       SkMScalar progress) const;
-
-  // Sets |bounds| be the bounding box for the region within which |box| will
-  // exist when it is transformed by the result of calling Blend on |from| and
-  // with progress in the range [min_progress, max_progress]. If this region
-  // cannot be computed, returns false.
-  bool BlendedBoundsForBox(const gfx::BoxF& box,
-                           const TransformOperations& from,
-                           SkMScalar min_progress,
-                           SkMScalar max_progress,
-                           gfx::BoxF* bounds) const;
-
-  // Returns true if these operations affect scale.
-  bool AffectsScale() const;
-
-  // Returns true if these operations are only translations.
-  bool IsTranslation() const;
-
-  // Returns false if the operations affect 2d axis alignment.
-  bool PreservesAxisAlignment() const;
-
-  // Returns true if this operation and its descendants have the same types
-  // as other and its descendants.
-  bool MatchesTypes(const TransformOperations& other) const;
-
-  // Returns true if these operations can be blended. It will only return
-  // false if we must resort to matrix interpolation, and matrix interpolation
-  // fails (this can happen if either matrix cannot be decomposed).
-  bool CanBlendWith(const TransformOperations& other) const;
-
-  // If these operations have no more than one scale operation, and if the only
-  // other operations are translations, sets |scale| to the scale component
-  // of these operations. Otherwise, returns false.
-  bool ScaleComponent(gfx::Vector3dF* scale) const;
-
-  void AppendTranslate(SkMScalar x, SkMScalar y, SkMScalar z);
-  void AppendRotate(SkMScalar x, SkMScalar y, SkMScalar z, SkMScalar degrees);
-  void AppendScale(SkMScalar x, SkMScalar y, SkMScalar z);
-  void AppendSkew(SkMScalar x, SkMScalar y);
-  void AppendPerspective(SkMScalar depth);
-  void AppendMatrix(const gfx::Transform& matrix);
-  void AppendIdentity();
-  bool IsIdentity() const;
-
- private:
-  bool BlendInternal(const TransformOperations& from,
-                     SkMScalar progress,
-                     gfx::Transform* result) const;
-
-  std::vector<TransformOperation> operations_;
-
-  bool ComputeDecomposedTransform() const;
-
-  // For efficiency, we cache the decomposed transform.
-  mutable scoped_ptr<gfx::DecomposedTransform> decomposed_transform_;
-  mutable bool decomposed_transform_dirty_;
-
-  DISALLOW_ASSIGN(TransformOperations);
-};
-
-}  // namespace cc
-
-#endif  // CC_ANIMATION_TRANSFORM_OPERATIONS_H_