<rdar://problem/10416316> [Mac] WebSocket doesn't work with authenticating proxies
        https://bugs.webkit.org/show_bug.cgi?id=114464

        Update WebKitSystemInterface.

        * WebKitSystemInterface.h:
        * libWebKitSystemInterfaceLion.a:
        * libWebKitSystemInterfaceMountainLion.a:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148240 268f45cc-cd09-0410-ab3c-d52691b4dbfc