Clearing WebSite data on iOS does not clear the Fetch Cache.
<rdar://problem/36060129>
Created attachment 329413 [details] WIP Patch
Created attachment 329415 [details] Patch
Comment on attachment 329415 [details] Patch Yipee!
Comment on attachment 329415 [details] Patch Clearing flags on attachment: 329415 Committed r225944: <https://trac.webkit.org/changeset/225944>
All reviewed patches have been landed. Closing bug.