Oilpan: Prepare to move RenderObject and RenderObjectChildList to Oilpan heap.

Source/core/rendering/RenderTableSection.h

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2009, 2013 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
@@ skipping 46 matching lines @@
     unsigned m_end;
 };
 
 class RenderTableCell;
 class RenderTableRow;
 
 class RenderTableSection FINAL : public RenderBox {
 public:
     RenderTableSection(Element*);
     virtual ~RenderTableSection();
+    virtual void trace(Visitor*) OVERRIDE;
 
     RenderTableRow* firstRow() const;
     RenderTableRow* lastRow() const;
 
     const RenderObjectChildList* children() const { return &m_children; }
     RenderObjectChildList* children() { return &m_children; }
 
     virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) OVERRIDE;
 
     virtual int firstLineBoxBaseline() const OVERRIDE;
@@ skipping 213 matching lines @@
     int m_outerBorderStart;
     int m_outerBorderEnd;
     int m_outerBorderBefore;
     int m_outerBorderAfter;
 
     bool m_needsCellRecalc;
 
     // This HashSet holds the overflowing cells for faster painting.
     // If we have more than gMaxAllowedOverflowingCellRatio * total cells, it will be empty
     // and m_forceSlowPaintPathWithOverflowingCell will be set to save memory.
     HashSet<RenderTableCell*> m_overflowingCells;

[haraken, 2014/08/01 17:48:21]

You'll need to take care of these raw pointers. I think this should be a hash
set of Members.

     bool m_forceSlowPaintPathWithOverflowingCell;
 
     bool m_hasMultipleCellLevels;
 
     // This map holds the collapsed border values for cells with collapsed borders.
     // It is held at RenderTableSection level to spare memory consumption by table cells.
     HashMap<pair<const RenderTableCell*, int>, CollapsedBorderValue > m_cellsCollapsedBorders;

[haraken, 2014/08/01 17:48:21]

Ditto. This should be a hash map of Members.

 };
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderTableSection, isTableSection());
 
 } // namespace blink
 
 #endif // RenderTableSection_h