Support indexed setter generation

Source/core/dom/DOMStringMap.h

 /*
  * Copyright (C) 2010 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 31 matching lines @@
     virtual ~DOMStringMap();
 
     virtual void ref() = 0;
     virtual void deref() = 0;
 
     virtual void getNames(Vector<String>&) = 0;
     virtual String item(const String& name) = 0;
     virtual bool contains(const String& name) = 0;
     virtual void setItem(const String& name, const String& value, ExceptionCode&) = 0;
     virtual void deleteItem(const String& name, ExceptionCode&) = 0;
-    bool anonymousNamedSetter(const String& name, const String& value, ExceptionCode& ec)
+    bool anonymousNamedSetter(const String& name, const String& value, bool isValueNull, bool isValueUndefined, ExceptionCode& ec)
     {
         setItem(name, value, ec);
         return true;
     }
 
     virtual Element* element() = 0;
 
 protected:
     DOMStringMap()
     {
         ScriptWrappable::init(this);
     }
 };
 
 } // namespace WebCore
 
 #endif // DOMStringMap_h