Drop HistoryItem's m_prev / m_next. Those are no longer needed after the PageCache refactoring in <http://trac.webkit.org/r179347>.
Created attachment 245764 [details] Patch
Comment on attachment 245764 [details] Patch Clearing flags on attachment: 245764 Committed r179434: <http://trac.webkit.org/changeset/179434>
All reviewed patches have been landed. Closing bug.