Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * 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.
@@ skipping 56 matching lines @@
  protected:
   LayoutObjectChildList* virtualChildren() final { return children(); }
   const LayoutObjectChildList* virtualChildren() const final {
     return children();
   }
 
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectSVGContainer ||
            LayoutSVGModelObject::isOfType(type);
   }
+  char objectSize() const override { return sizeof(this); }
+
   void layout() override;
 
   void addChild(LayoutObject* child, LayoutObject* beforeChild = nullptr) final;
   void removeChild(LayoutObject*) final;
   void addOutlineRects(Vector<LayoutRect>&,
                        const LayoutPoint& additionalOffset,
                        IncludeBlockVisualOverflowOrNot) const final;
 
   FloatRect strokeBoundingBox() const final { return m_strokeBoundingBox; }
 
@@ skipping 20 matching lines @@
   bool m_didScreenScaleFactorChange : 1;
   mutable bool m_hasNonIsolatedBlendingDescendants : 1;
   mutable bool m_hasNonIsolatedBlendingDescendantsDirty : 1;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGContainer, isSVGContainer());
 
 }  // namespace blink
 
 #endif  // LayoutSVGContainer_h