Properly measure usage for Node attributes removed from DOM4

Source/core/dom/Element.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013 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
@@ skipping 625 matching lines @@
 
     IntSize savedLayerScrollOffset() const;
     void setSavedLayerScrollOffset(const IntSize&);
 
     ActiveAnimations* activeAnimations() const;
     ActiveAnimations* ensureActiveAnimations();
     bool hasActiveAnimations() const;
 
     InputMethodContext* inputMethodContext();
 
+    virtual void setPrefix(const AtomicString&, ExceptionState&) OVERRIDE FINAL;
+
 protected:
     Element(const QualifiedName& tagName, Document* document, ConstructionType type)
         : ContainerNode(document, type)
         , m_tagName(tagName)
     {
         ScriptWrappable::init(this);
     }
 
     virtual bool isPresentationAttribute(const QualifiedName&) const { return false; }
 
@@ skipping 64 matching lines @@
     void synchronizeAttribute(const QualifiedName&) const;
     void synchronizeAttribute(const AtomicString& localName) const;
 
     void updateId(const AtomicString& oldId, const AtomicString& newId);
     void updateId(TreeScope*, const AtomicString& oldId, const AtomicString& newId);
     void updateName(const AtomicString& oldName, const AtomicString& newName);
     void updateLabel(TreeScope*, const AtomicString& oldForAttributeValue, const AtomicString& newForAttributeValue);
 
     void scrollByUnits(int units, ScrollGranularity);
 
-    virtual void setPrefix(const AtomicString&, ExceptionState&) OVERRIDE FINAL;
     virtual NodeType nodeType() const OVERRIDE FINAL;
     virtual bool childTypeAllowed(NodeType) const OVERRIDE FINAL;
 
     void setAttributeInternal(size_t index, const QualifiedName&, const AtomicString& value, SynchronizationOfLazyAttribute);
     void addAttributeInternal(const QualifiedName&, const AtomicString& value, SynchronizationOfLazyAttribute);
     void removeAttributeInternal(size_t index, SynchronizationOfLazyAttribute);
     void attributeChangedFromParserOrByCloning(const QualifiedName&, const AtomicString&, AttributeModificationReason);
 
 #ifndef NDEBUG
     virtual void formatForDebugger(char* buffer, unsigned length) const;
@@ skipping 342 matching lines @@
 
 inline const Attribute* ElementData::attributeItem(unsigned index) const
 {
     RELEASE_ASSERT(index < length());
     return attributeBase() + index;
 }
 
 } // namespace
 
 #endif