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

Source/core/svg/SVGGlyphRefElement.h

 /*
  * Copyright (C) 2011 Leo Yang <leoyang@webkit.org>
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 14 matching lines @@
 #include "core/svg/SVGElement.h"
 #include "core/svg/SVGURIReference.h"
 
 namespace WebCore {
 
 class SVGGlyphRefElement FINAL : public SVGElement,
                                  public SVGURIReference {
 public:
     static PassRefPtr<SVGGlyphRefElement> create(Document&);
 
-    bool hasValidGlyphElement(String& glyphName) const;
+    bool hasValidGlyphElement(AtomicString& glyphName) const;
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
 
     // DOM interface
     const AtomicString& glyphRef() const;
     void setGlyphRef(const AtomicString&);
     float x() const { return m_x; }
     void setX(float);
     float y() const { return m_y; }
     void setY(float);
     float dx() const { return m_dx; }
@@ skipping 18 matching lines @@
     float m_dx;
     float m_dy;
 };
 
 DEFINE_NODE_TYPE_CASTS(SVGGlyphRefElement, hasTagName(SVGNames::glyphRefTag));
 
 }
 
 #endif
 #endif