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

Source/core/html/parser/HTMLMetaCharsetParser.cpp

 /*
  * Copyright (C) 2010 Google Inc. All Rights Reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 103 matching lines @@
     return m_encoding.isValid();
 }
 
 WTF::TextEncoding HTMLMetaCharsetParser::encodingFromMetaAttributes(const AttributeList& attributes)
 {
     bool gotPragma = false;
     Mode mode = None;
     String charset;
 
     for (AttributeList::const_iterator iter = attributes.begin(); iter != attributes.end(); ++iter) {
-        const AtomicString& attributeName = iter->first;
+        const AtomicString& attributeName = AtomicString(iter->first);
         const String& attributeValue = iter->second;
 
         if (attributeName == http_equivAttr) {
             if (equalIgnoringCase(attributeValue, "content-type"))
                 gotPragma = true;
         } else if (charset.isEmpty()) {
             if (attributeName == charsetAttr) {
                 charset = attributeValue;
                 mode = Charset;
             } else if (attributeName == contentAttr) {
@@ skipping 65 matching lines @@
             return true;
         }
 
         m_token.clear();
     }
 
     return false;
 }
 
 }