Make Exception and Error objects ScriptWrappable.

Source/core/dom/EventException.h

Index: Source/core/dom/EventException.h
diff --git a/Source/core/dom/EventException.h b/Source/core/dom/EventException.h
index 77bde1c3d7a155854b21c0313da31bc3cd902609..cc7c91703792e601b0e70a3d96c1dd3ad39c3961 100644
--- a/Source/core/dom/EventException.h
+++ b/Source/core/dom/EventException.h
@@ -29,11 +29,12 @@
 #ifndef EventException_h
 #define EventException_h
 
+#include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/ExceptionBase.h"
 
 namespace WebCore {
 
-class EventException : public ExceptionBase {
+class EventException : public ExceptionBase, public ScriptWrappable {
 public:
     static PassRefPtr<EventException> create(const ExceptionCodeDescription& description)
     {
@@ -54,6 +55,7 @@ private:
     explicit EventException(const ExceptionCodeDescription& description)
         : ExceptionBase(description)
     {
+        ScriptWrappable::init(this);
     }
 };