Do-not-commit: Count layout tree memory usage

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

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc.
  *               All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 621 matching lines @@
   bool isSVGResourceContainer() const {
     return isOfType(LayoutObjectSVGResourceContainer);
   }
   bool isSVGResourceFilter() const {
     return isOfType(LayoutObjectSVGResourceFilter);
   }
   bool isSVGResourceFilterPrimitive() const {
     return isOfType(LayoutObjectSVGResourceFilterPrimitive);
   }
 
+  // Total size of this object.
+  virtual char objectSize() const { return sizeof(this); }
+  // Total size of this object plus any heap-allocated memory.
+  virtual char approximateHeapMemoryUsage() const;
+
   // FIXME: Those belong into a SVG specific base-class for all layoutObjects
   // (see above). Unfortunately we don't have such a class yet, because it's not
   // possible for all layoutObjects to inherit from LayoutSVGObject ->
   // LayoutObject (some need LayoutBlock inheritance for instance)
   virtual void setNeedsTransformUpdate() {}
   virtual void setNeedsBoundariesUpdate();
 
   bool isBlendingAllowed() const {
     return !isSVG() || (isSVGContainer() && !isSVGHiddenContainer()) ||
            isSVGShape() || isSVGImage() || isSVGText();
@@ skipping 2127 matching lines @@
 CORE_EXPORT void showLineTree(const blink::LayoutObject*);
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1,
                                 const blink::LayoutObject* object2);
 
 #endif
 
 #endif  // LayoutObject_h