We have been implementing constructors of Events. BeforeLoadEvent has a constructor in JSC (bug 69893), but does not have it in V8.
Created attachment 110829 [details]
Comment on attachment 110829 [details]
Clearing flags on attachment: 110829
Committed r97419: <http://trac.webkit.org/changeset/97419>
All reviewed patches have been landed. Closing bug.