Let userIdleTime() return maximum number instead of 0 as most of other ports do, so it won't block page cache from releasing cached pages.
Created attachment 125398 [details] the patch
Comment on attachment 125398 [details] the patch LGTM.
Comment on attachment 125398 [details] the patch Clearing flags on attachment: 125398 Committed r106697: <http://trac.webkit.org/changeset/106697>
All reviewed patches have been landed. Closing bug.