Add 'error' parameter to 'window.onerror' handlers.

Source/core/dom/ErrorEvent.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 41 matching lines @@
         return adoptRef(new ErrorEvent);
     }
     static PassRefPtr<ErrorEvent> create(const String& message, const String& fileName, unsigned lineNumber, unsigned columnNumber)
     {
         return adoptRef(new ErrorEvent(message, fileName, lineNumber, columnNumber));
     }
     static PassRefPtr<ErrorEvent> create(const AtomicString& type, const ErrorEventInit& initializer)
     {
         return adoptRef(new ErrorEvent(type, initializer));
     }
+    static PassRefPtr<ErrorEvent> createSanitizedError()
+    {
+        return adoptRef(new ErrorEvent("Script error.", String(), 0, 0));
+    }
     virtual ~ErrorEvent();
 
     const String& message() const { return m_message; }
     const String& filename() const { return m_fileName; }
     unsigned lineno() const { return m_lineNumber; }
     unsigned colno() const { return m_columnNumber; }
 
     virtual const AtomicString& interfaceName() const;
 
 private:
     ErrorEvent();
     ErrorEvent(const String& message, const String& fileName, unsigned lineNumber, unsigned columnNumber);
     ErrorEvent(const AtomicString&, const ErrorEventInit&);
 
     String m_message;
     String m_fileName;
     unsigned m_lineNumber;
     unsigned m_columnNumber;
 };
 
 } // namespace WebCore
 
 #endif // ErrorEvent_h