Align HTMLAppletElement IDL with spec

Source/core/html/HTMLAppletElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 50 matching lines @@
         || name == codebaseAttr
         || name == mayscriptAttr
         || name == objectAttr) {
         // Do nothing.
         return;
     }
 
     HTMLPlugInElement::parseAttribute(name, value);
 }
 
+bool HTMLAppletElement::isURLAttribute(const Attribute& attribute) const
+{
+    return attribute.name() == codebaseAttr || attribute.name() == objectAttr
+        || HTMLPlugInElement::isURLAttribute(attribute);
+}
+
 bool HTMLAppletElement::rendererIsNeeded(const RenderStyle& style)
 {
     if (!fastHasAttribute(codeAttr))
         return false;
     return HTMLPlugInElement::rendererIsNeeded(style);
 }
 
 RenderObject* HTMLAppletElement::createRenderer(RenderStyle* style)
 {
     if (!canEmbedJava())
@@ skipping 108 matching lines @@
     if (!settings)
         return false;
 
     if (!settings->isJavaEnabled())
         return false;
 
     return true;
 }
 
 }