Do-not-commit: Count layout tree memory usage

third_party/WebKit/Source/core/layout/LayoutTableCol.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 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 69 matching lines @@
   // Returns the next column or column-group.
   LayoutTableCol* nextColumn() const;
 
   const BorderValue& borderAdjoiningCellStartBorder(
       const LayoutTableCell*) const;
   const BorderValue& borderAdjoiningCellEndBorder(const LayoutTableCell*) const;
   const BorderValue& borderAdjoiningCellBefore(const LayoutTableCell*) const;
   const BorderValue& borderAdjoiningCellAfter(const LayoutTableCell*) const;
 
   const char* name() const override { return "LayoutTableCol"; }
+  char objectSize() const override { return sizeof(this); }
 
  private:
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectLayoutTableCol || LayoutBox::isOfType(type);
   }
   void updateFromElement() override;
   void computePreferredLogicalWidths() override { NOTREACHED(); }
 
   void insertedIntoTree() override;
   void willBeRemovedFromTree() override;
 
   bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
   bool canHaveChildren() const override;
   PaintLayerType layerTypeRequired() const override { return NoPaintLayer; }
 
   LayoutRect localVisualRect() const override;
 
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
 
   LayoutTable* table() const;
 
   unsigned m_span;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTableCol, isLayoutTableCol());
 
 }  // namespace blink
 
 #endif