Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 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,
@@ skipping 47 matching lines @@
   explicit LayoutSVGTextPath(Element*);
 
   std::unique_ptr<PathPositionMapper> layoutPath() const;
   float calculateStartOffset(float) const;
 
   bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
 
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectSVGTextPath || LayoutSVGInline::isOfType(type);
   }
+  char objectSize() const override { return sizeof(this); }
 
   const char* name() const override { return "LayoutSVGTextPath"; }
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGTextPath, isSVGTextPath());
 
 }  // namespace blink
 
 #endif  // LayoutSVGTextPath_h