Use AtomicString API directly

Source/core/html/HTMLObjectElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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 321 matching lines @@
     if (inDocument() && !useFallbackContent()) {
         setNeedsWidgetUpdate(true);
         setNeedsStyleRecalc(SubtreeStyleChange);
     }
     HTMLPlugInElement::childrenChanged(change);
 }
 
 bool HTMLObjectElement::isURLAttribute(const Attribute& attribute) const
 {
     return attribute.name() == codebaseAttr || attribute.name() == dataAttr
-        || (attribute.name() == usemapAttr && attribute.value().string()[0] != '#')
+        || (attribute.name() == usemapAttr && attribute.value()[0] != '#')
         || HTMLPlugInElement::isURLAttribute(attribute);
 }
 
 bool HTMLObjectElement::hasLegalLinkAttribute(const QualifiedName& name) const
 {
     return name == classidAttr || name == dataAttr || name == codebaseAttr || HTMLPlugInElement::hasLegalLinkAttribute(name);
 }
 
 const QualifiedName& HTMLObjectElement::subResourceAttributeName() const
 {
@@ skipping 104 matching lines @@
 {
     return fastHasAttribute(usemapAttr);
 }
 
 bool HTMLObjectElement::useFallbackContent() const
 {
     return HTMLPlugInElement::useFallbackContent() || m_useFallbackContent;
 }
 
 }