We do not shutdown the Worker thread in the chromium port when the thread calls close().
This means that code like this:
var worker = new Worker("worker.js");
Will leave the thread running until the parent window shuts down. There's code in Chromium to prevent further messages from being to/from the closing thread, but the thread itself still sits there.
Created attachment 48172 [details]
Comment on attachment 48172 [details]
Clearing flags on attachment: 48172
Committed r54380: <http://trac.webkit.org/changeset/54380>
All reviewed patches have been landed. Closing bug.