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

cc/playback/clip_display_item.h

-// Copyright 2014 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_DISPLAY_ITEM_H_
-#define CC_PLAYBACK_CLIP_DISPLAY_ITEM_H_
-
-#include <stddef.h>
-
-#include <vector>
-
-#include "cc/base/cc_export.h"
-#include "cc/playback/display_item.h"
-#include "third_party/skia/include/core/SkRRect.h"
-#include "ui/gfx/geometry/rect.h"
-
-namespace cc {
-
-class CC_EXPORT ClipDisplayItem : public DisplayItem {
- public:
-  ClipDisplayItem(const gfx::Rect& clip_rect,
-                  std::vector<SkRRect> rounded_clip_rects,
-                  bool antialias);
-  ~ClipDisplayItem() override;
-
-  size_t ExternalMemoryUsage() const {
-    return rounded_clip_rects.capacity() * sizeof(rounded_clip_rects[0]);
-  }
-  int ApproximateOpCount() const { return 1; }
-
-  const gfx::Rect clip_rect;
-  const std::vector<SkRRect> rounded_clip_rects;
-  const bool antialias;
-};
-
-class CC_EXPORT EndClipDisplayItem : public DisplayItem {
- public:
-  EndClipDisplayItem();
-  ~EndClipDisplayItem() override;
-
-  int ApproximateOpCount() const { return 0; }
-};
-
-}  // namespace cc
-
-#endif  // CC_PLAYBACK_CLIP_DISPLAY_ITEM_H_