Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2011 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 30 matching lines @@
   const Font& originalFont() const { return parent()->style()->font(); }
   void transformToInlineCoordinates(GraphicsContext&,
                                     const LayoutRect& boxRect,
                                     bool clip = false) const;
   LayoutUnit inlineWidthForLayout() const;
 
   const char* name() const override { return "LayoutTextCombine"; }
 
  private:
   bool isCombineText() const override { return true; }
+  char objectSize() const override { return sizeof(this); }
   float width(unsigned from,
               unsigned length,
               const Font&,
               LayoutUnit xPosition,
               TextDirection,
               HashSet<const SimpleFontData*>* fallbackFonts = nullptr,
               FloatRect* glyphBounds = nullptr) const override;
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
   void setTextInternal(PassRefPtr<StringImpl>) override;
   void updateIsCombined();
 
   float m_combinedTextWidth;
   float m_scaleX;
   bool m_isCombined : 1;
   bool m_needsFontUpdate : 1;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTextCombine, isCombineText());
 
 inline LayoutUnit LayoutTextCombine::inlineWidthForLayout() const {
   ASSERT(!m_needsFontUpdate);
   return LayoutUnit::fromFloatCeil(m_combinedTextWidth);
 }
 
 }  // namespace blink
 
 #endif  // LayoutTextCombine_h