Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2011 Robert Hogan <robert@roberthogan.net>
  *
  * 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 35 matching lines @@
  public:
   explicit LayoutTableCaption(Element*);
   ~LayoutTableCaption() override;
   LayoutUnit containingBlockLogicalWidthForContent() const override;
 
  private:
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectTableCaption || LayoutBlockFlow::isOfType(type);
   }
 
+  char objectSize() const override { return sizeof(this); }
+
   void insertedIntoTree() override;
   void willBeRemovedFromTree() override;
 
   LayoutTable* table() const;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutTableCaption, isTableCaption());
 
 }  // namespace blink
 
 #endif  // LayoutTableCaption_h