Make sure getAttribute() / setAttribute() callers use AtomicStrings

Source/core/html/HTMLAudioElement.cpp

 /*
  * Copyright (C) 2007, 2010, 2011, 2012, 2013 Apple 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 27 matching lines @@
     ScriptWrappable::init(this);
 }
 
 PassRefPtr<HTMLAudioElement> HTMLAudioElement::create(Document& document, bool createdByParser)
 {
     RefPtr<HTMLAudioElement> audioElement(adoptRef(new HTMLAudioElement(document, createdByParser)));
     audioElement->suspendIfNeeded();
     return audioElement.release();
 }
 
-PassRefPtr<HTMLAudioElement> HTMLAudioElement::createForJSConstructor(Document& document, const String& src)
+PassRefPtr<HTMLAudioElement> HTMLAudioElement::createForJSConstructor(Document& document, const AtomicString& src)
 {
     RefPtr<HTMLAudioElement> audio = adoptRef(new HTMLAudioElement(document, false));
     audio->setPreload("auto");
     if (!src.isNull())
         audio->setSrc(src);
     audio->suspendIfNeeded();
     return audio.release();
 }
 
 }