Cleaned up nsFrame class declaration a bit.
Added some API entries to nsIMenuFrame in support of type="radio"'s
pick-one behaviour.
Renamed UpdateMenuChecked to UpdateMenuSpecialState.
Removed stale string-splitting code in CreateAnonymousContent.
(r=hyatt,mcafee)
git-svn-id: svn://10.0.0.236/trunk@50957 18797224-902f-48f8-a5cc-f745e15eee43