The "faabar" wasn't friendly to screer readers, and would either just say what the user typed in the url bar or nothing at all.
now, screen readers will read the title, url and type ("tag" or "bookmark") for each autocomplete result.
r=gavin, a=blocking-firefox3+
git-svn-id: svn://10.0.0.236/trunk@240508 18797224-902f-48f8-a5cc-f745e15eee43
983e68f946