PlugIns that come from a file:// origin should never be added to the autostart list.
<rdar://problem/13037458>
Created attachment 185364 [details] Patch
Comment on attachment 185364 [details] Patch Do we really need the log?
Comment on attachment 185364 [details] Patch Also somewhat surprised we don't have something somewhere to match file://
Maybe you should use SchemeRegistry::shouldTreatURLSchemeAsLocal, if you know how to split the scheme off.
Committed r142310: <http://trac.webkit.org/changeset/142310>