Move cc::DisplayItemList and related classes into cc/paint/

cc/playback/clip_path_display_item.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 CC_PLAYBACK_CLIP_PATH_DISPLAY_ITEM_H_
-#define CC_PLAYBACK_CLIP_PATH_DISPLAY_ITEM_H_
-
-#include <stddef.h>
-
-#include "cc/base/cc_export.h"
-#include "cc/playback/display_item.h"
-#include "third_party/skia/include/core/SkPath.h"
-
-namespace cc {
-
-class CC_EXPORT ClipPathDisplayItem : public DisplayItem {
- public:
-  ClipPathDisplayItem(const SkPath& path, bool antialias);
-  ~ClipPathDisplayItem() override;
-
-  size_t ExternalMemoryUsage() const {
-    // The size of SkPath's external storage is not currently accounted for (and
-    // may well be shared anyway).
-    return 0;
-  }
-  int ApproximateOpCount() const { return 1; }
-
-  const SkPath clip_path;
-  const bool antialias;
-};
-
-class CC_EXPORT EndClipPathDisplayItem : public DisplayItem {
- public:
-  EndClipPathDisplayItem();
-  ~EndClipPathDisplayItem() override;
-
-  int ApproximateOpCount() const { return 0; }
-};
-
-}  // namespace cc
-
-#endif  // CC_PLAYBACK_CLIP_PATH_DISPLAY_ITEM_H_