DOMException toString is not correct

Source/core/dom/ExceptionBase.h

 /*
  * Copyright (C) 2007 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
@@ skipping 23 matching lines @@
 #include <wtf/text/WTFString.h>
 
 namespace WebCore {
 
 struct ExceptionCodeDescription;
 
 class ExceptionBase : public RefCounted<ExceptionBase> {
 public:
     unsigned short code() const { return m_code; }
     String name() const { return m_name; }
-    String message() const { return m_message; }
+    String message() const { return description(); }
     String description() const { return m_description; }
 
     String toString() const;
 
 protected:
     explicit ExceptionBase(const ExceptionCodeDescription&);
 
 private:
     unsigned short m_code;
     String m_name;
-    String m_message;
     String m_description;
 };
 
 } // namespace WebCore
 
 #endif // ExceptionBase_h