Remove unused V8ThrowException::createDOMException() helper.

Source/bindings/v8/V8ThrowException.h

 /*
  * Copyright (C) 2009 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 23 matching lines @@
     v8RangeError,
     v8ReferenceError,
     v8SyntaxError,
     v8TypeError,
     v8GeneralError
 };
 
 class V8ThrowException {
 public:
 
-    static v8::Handle<v8::Value> createDOMException(int ec, v8::Isolate* isolate)
-    {
-        return createDOMException(ec, String(), v8::Handle<v8::Object>(), isolate);
-    }
     static v8::Handle<v8::Value> createDOMException(int ec, const String& message, const v8::Handle<v8::Object>& creationContext, v8::Isolate* isolate)
     {
         return createDOMException(ec, message, String(), creationContext, isolate);
     }
     static v8::Handle<v8::Value> createDOMException(int, const String& sanitizedMessage, const String& unsanitizedMessage, const v8::Handle<v8::Object>& creationContext, v8::Isolate*);
 
     static v8::Handle<v8::Value> throwDOMException(int ec, const v8::Handle<v8::Object>& creationContext, v8::Isolate* isolate)
     {
         return throwDOMException(ec, String(), creationContext, isolate);
     }
     static v8::Handle<v8::Value> throwDOMException(int ec, const String& message, const v8::Handle<v8::Object>& creationContext, v8::Isolate* isolate)
     {
         return throwDOMException(ec, message, String(), creationContext, isolate);
     }
     static v8::Handle<v8::Value> throwDOMException(int, const String& sanitizedMessage, const String& unsanitizedMessage, const v8::Handle<v8::Object>& creationContext, v8::Isolate*);
 
     static v8::Handle<v8::Value> createError(V8ErrorType, const String&, v8::Isolate*);
     static v8::Handle<v8::Value> throwError(V8ErrorType, const String&, v8::Isolate*);
     static v8::Handle<v8::Value> throwError(v8::Handle<v8::Value>, v8::Isolate*);
 
     static v8::Handle<v8::Value> createTypeError(const String&, v8::Isolate*);
     static v8::Handle<v8::Value> throwTypeError(const String&, v8::Isolate*);
 };
 
 } // namespace WebCore
 
 #endif // V8ThrowException_h