Make Exception and Error objects ScriptWrappable.

Source/core/xml/XPathException.h

 /*
  * Copyright (C) 2007, 2008 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 11 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef XPathException_h
 #define XPathException_h
 
+#include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/ExceptionBase.h"
 
 namespace WebCore {
 
-class XPathException : public ExceptionBase {
+class XPathException : public ExceptionBase, public ScriptWrappable {
 public:
     static PassRefPtr<XPathException> create(const ExceptionCodeDescription& description)
     {
         return adoptRef(new XPathException(description));
     }
 
     static const int XPathExceptionOffset = 400;
     static const int XPathExceptionMax = 499;
 
     enum XPathExceptionCode {
         INVALID_EXPRESSION_ERR = XPathExceptionOffset + 51,
         TYPE_ERR
     };
 
     static bool initializeDescription(ExceptionCode, ExceptionCodeDescription*);
 
 private:
     explicit XPathException(const ExceptionCodeDescription& description)
         : ExceptionBase(description)
     {
+        ScriptWrappable::init(this);
     }
 };
 
 } // namespace WebCore
 
 #endif // XPathException_h