WebContent process has its own caches directory, so it's silly to further limit access to its subdirectories only. Whenever there is something in lower level frameworks that wants to have a cache, we need to do extra work to allow that. rdar://problem/20314916
Created attachment 249936 [details] proposed patch
Comment on attachment 249936 [details] proposed patch looks good to me -- r=me if you want it :D
Waiting for EWS, as I didn't attempt to compile locally :-D
Committed <http://trac.webkit.org/r182259>.