It was back in Firefox 3 (released a few months before Chrome was announced) that Firefox’s address bar got the last significant pieces of that functionality an

It was back in Firefox 3 (released a few months before Chrome was announced) that Firefox’s address bar got the last significant pieces of that functionality and was dubbed the AwesomeBar. I think that at that time Firefox still struggled with single-word searches from the address bar, treating them as domain names; if so, that was probably the last material difference (as distinct from social) before Firefox could reasonably remove the search box by default.