[iOS WK2] Pages often blank on first load if page loaded by typing the URL
Created attachment 229350 [details] Patch
Created attachment 229351 [details] Patch
https://trac.webkit.org/r167298
<rdar://problem/16614980>
This change made CSS filter tests crash on Mac: <http://build.webkit.org/results/Apple%20Mavericks%20Release%20WK2%20(Tests)/r167299%20(4927)/results.html>. Will roll out.
Re-opened since this is blocked by bug 131670
https://trac.webkit.org/r167316