Remove the 'general_directory_for_storage' system feature flag
Created attachment 456624 [details] Patch
If you need a for-debugging-only way to disable this, perhaps a user default, or WebPreferencesDebug preference? (both suggestions are only valid if you're OK with apps having the power to turn this flag on and off themselves).
Sihui points out that `internalFeatureEnabled` somewhat-questionably already reads from defaults, so this should be OK as it stands.
Comment on attachment 456624 [details] Patch r=me, given that we should still be able to turn it off with NSUserDefaults.
Committed r292355 (249220@trunk): <https://commits.webkit.org/249220@trunk>
<rdar://problem/91266474>