Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2006 Apple Computer, Inc
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
  * Copyright (C) 2011 University of Szeged
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 107 matching lines @@
   // include this shape's stroke bounding box if it had a stroke.
   virtual FloatRect hitTestStrokeBoundingBox() const;
   virtual bool shapeDependentStrokeContains(const FloatPoint&);
   virtual bool shapeDependentFillContains(const FloatPoint&,
                                           const WindRule) const;
 
   FloatRect m_fillBoundingBox;
   FloatRect m_strokeBoundingBox;
   LayoutSVGShapeRareData& ensureRareData() const;
 
+  char objectSize() const override { return sizeof(this); }
+  char approximateHeapMemoryUsage() const override {
+    int memory = LayoutSVGModelObject::approximateHeapMemoryUsage();
+    // TODO(pdr): Include memory from m_path.
+    if (m_rareData)
+      memory += sizeof(LayoutSVGShapeRareData);
+    return memory;
+  }
+
  private:
   // Hit-detection separated for the fill and the stroke
   bool fillContains(const FloatPoint&,
                     bool requiresFill = true,
                     const WindRule fillRule = RULE_NONZERO);
   bool strokeContains(const FloatPoint&, bool requiresStroke = true);
 
   bool isOfType(LayoutObjectType type) const override {
     return type == LayoutObjectSVGShape || LayoutSVGModelObject::isOfType(type);
   }
@@ skipping 24 matching lines @@
   bool m_needsBoundariesUpdate : 1;
   bool m_needsShapeUpdate : 1;
   bool m_needsTransformUpdate : 1;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGShape, isSVGShape());
 
 }  // namespace blink
 
 #endif