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

Source/core/css/MediaQuery.cpp

 /*
  * CSS Media Query
  *
  * Copyright (C) 2005, 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 55 matching lines @@
         result.append(m_expressions->at(i)->serialize());
     }
     return result.toString();
 }
 
 static bool expressionCompare(const OwnPtr<MediaQueryExp>& a, const OwnPtr<MediaQueryExp>& b)
 {
     return codePointCompare(a->serialize(), b->serialize()) < 0;
 }
 
-MediaQuery::MediaQuery(Restrictor r, const String& mediaType, PassOwnPtr<ExpressionVector> expressions)
+MediaQuery::MediaQuery(Restrictor r, const AtomicString& mediaType, PassOwnPtr<ExpressionVector> expressions)
     : m_restrictor(r)
     , m_mediaType(mediaType.lower())
     , m_expressions(expressions)
 {
     if (!m_expressions) {
         m_expressions = adoptPtr(new ExpressionVector);
         return;
     }
 
     nonCopyingSort(m_expressions->begin(), m_expressions->end(), expressionCompare);
@@ skipping 33 matching lines @@
 // http://dev.w3.org/csswg/cssom/#serialize-a-list-of-media-queries
 String MediaQuery::cssText() const
 {
     if (m_serializationCache.isNull())
         const_cast<MediaQuery*>(this)->m_serializationCache = serialize();
 
     return m_serializationCache;
 }
 
 }