SerializedScriptValue needs to know the message ports being sent with the message to implement trasfer
Created attachment 111154 [details] Fix
At first glance this seems fine. I'll look more and see if I notice anything that doesn't seem straightforward. Adding Oliver in case he wants to look it over since he implemented SeriazlizedScriptValue for JSC and is familiar with JSC.
Comment on attachment 111154 [details] Fix Looks sensible to me
Comment on attachment 111154 [details] Fix Clearing flags on attachment: 111154 Committed r97576: <http://trac.webkit.org/changeset/97576>
All reviewed patches have been landed. Closing bug.