Split ClipTransformRecorder into {Clip,Transform}Recorder.

ui/compositor/clip_transform_recorder.h

-// Copyright 2015 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_COMPOSITOR_CLIP_TRANSFORM_RECORDER_H_
-#define UI_COMPOSITOR_CLIP_TRANSFORM_RECORDER_H_
-
-#include <vector>
-
-#include "base/macros.h"
-#include "ui/compositor/compositor_export.h"
-
-namespace cc {
-class DisplayItem;
-class DisplayItemList;
-}
-
-namespace gfx {
-class Path;
-class Rect;
-class Transform;
-}
-
-namespace ui {
-class PaintContext;
-
-// A class to provide scoped clips and transforms of painting to a
-// DisplayItemList. The the clip/transform provided will be applied to any
-// DisplayItems added to the DisplayItemList while this object is alive. In
-// other words, any nested PaintRecorders or other ClipTransformRecorders will
-// be clipped/transformed.
-class COMPOSITOR_EXPORT ClipTransformRecorder {
- public:
-  explicit ClipTransformRecorder(const PaintContext& context);
-  ~ClipTransformRecorder();
-
-  void ClipRect(const gfx::Rect& clip_rect);
-  void ClipPath(const gfx::Path& clip_path);
-  void ClipPathWithAntiAliasing(const gfx::Path& clip_path);
-  void Transform(const gfx::Transform& transform);
-
- private:
-  enum Closer {
-    CLIP_RECT,
-    CLIP_PATH,
-    TRANSFORM,
-  };
-  const PaintContext& context_;
-  // If someone needs to do more than this many operations with a single
-  // ClipTransformRecorder then increase the size of the closers_ array.
-  Closer closers_[4];
-  size_t num_closers_;
-
-  DISALLOW_COPY_AND_ASSIGN(ClipTransformRecorder);
-};
-
-}  // namespace ui
-
-#endif  // UI_COMPOSITOR_CLIP_TRANSFORM_RECORDER_H_