Make calls to AtomicString(const String&) explicit in html/

Source/core/html/HTMLAnchorElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  * Copyright (C) 2007, 2008, 2009, 2010 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 61 matching lines @@
     virtual String input() const OVERRIDE;
     virtual void setInput(const String&) OVERRIDE;
 
     String text();
 
     bool isLiveLink() const;
 
     virtual bool willRespondToMouseClickEvents() OVERRIDE;
 
     bool hasRel(uint32_t relation) const;
-    void setRel(const String&);
+    void setRel(const AtomicString&);
 
     LinkHash visitedLinkHash() const;
     void invalidateCachedVisitedLinkHash() { m_cachedVisitedLinkHash = 0; }
 
 protected:
     HTMLAnchorElement(const QualifiedName&, Document&);
 
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
 private:
@@ skipping 46 matching lines @@
 // Functions shared with the other anchor elements (i.e., SVG).
 
 bool isEnterKeyKeydownEvent(Event*);
 bool isLinkClick(Event*);
 
 DEFINE_NODE_TYPE_CASTS(HTMLAnchorElement, hasTagName(HTMLNames::aTag));
 
 } // namespace WebCore
 
 #endif // HTMLAnchorElement_h