[Experiment] purge-and-suspend

third_party/WebKit/Source/core/layout/OverflowModel.h

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 117 matching lines @@
 // PaintLayerClipper and thus ignores this optimization.
 //
 // Visual overflow covers self visual overflow, and if the box doesn't clip
 // overflow, also content visual overflow. OverflowModel doesn't keep visual
 // overflow, but keeps self visual overflow and contents visual overflow
 // separately. The box should use self visual overflow as visual overflow if
 // it clips overflow, otherwise union of self visual overflow and contents
 // visual overflow.
 
 class BoxOverflowModel {
+    WTF_MAKE_NONCOPYABLE(BoxOverflowModel);
+    USING_FAST_MALLOC(BoxOverflowModel);
 public:
     BoxOverflowModel(const LayoutRect& layoutRect, const LayoutRect& selfVisualOverflowRect)
         : m_layoutOverflow(layoutRect)
         , m_selfVisualOverflow(selfVisualOverflowRect)
     {
     }
 
     const LayoutRect& layoutOverflowRect() const { return m_layoutOverflow; }
     void setLayoutOverflow(const LayoutRect& rect) { m_layoutOverflow = rect; }
     void addLayoutOverflow(const LayoutRect& rect) { uniteLayoutOverflowRect(m_layoutOverflow, rect); }
@@ skipping 17 matching lines @@
 private:
     LayoutRect m_layoutOverflow;
     LayoutRect m_selfVisualOverflow;
     LayoutRect m_contentsVisualOverflow;
     LayoutUnit m_layoutClientAfterEdge;
 };
 
 } // namespace blink
 
 #endif // OverflowModel_h