It's silly that WebProcessProxy keeps WebBackForwardListItems around after they get evicted from the back/forward list.
We already handle the case where the web process sends an IPC message referencing an invalid back/forward list item anyway.
Created attachment 249607 [details]
Comment on attachment 249607 [details]
Clearing flags on attachment: 249607
Committed r182084: <http://trac.webkit.org/changeset/182084>
All reviewed patches have been landed. Closing bug.