Do-not-commit: Count layout tree memory usage

third_party/WebKit/Source/core/layout/svg/LayoutSVGBlock.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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 47 matching lines @@
   bool mapToVisualRectInAncestorSpaceInternal(
       const LayoutBoxModelObject* ancestor,
       TransformState&,
       VisualRectFlags = DefaultVisualRectFlags) const final;
 
   AffineTransform m_localTransform;
 
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectSVG || LayoutBlockFlow::isOfType(type);
   }
+  char objectSize() const override { return sizeof(this); }
 
  private:
   LayoutRect absoluteVisualRect() const final;
 
   bool allowsOverflowClip() const final;
 
   void absoluteRects(Vector<IntRect>&,
                      const LayoutPoint& accumulatedOffset) const final;
 
   void updateFromStyle() final;
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) final;
 
   bool nodeAtPoint(HitTestResult&,
                    const HitTestLocation& locationInContainer,
                    const LayoutPoint& accumulatedOffset,
                    HitTestAction) override;
 
   // The inherited version doesn't check for SVG effects.
   bool paintedOutputOfObjectHasNoEffectRegardlessOfSize() const override {
     return false;
   }
 };
 
 }  // namespace blink
 #endif  // LayoutSVGBlock_h