It's embarrassing that Chrome can't do things like address bar in full-screen. Another obvious problem is lack of tab overflow.
Presentation mode (pictured in article) hide away all window chrome for... presentation
(worst ever? the full screen functionality change in OS X Mountain Lion for those of us with more than one monitor: it blanks the second monitor for apps that uses the OS provided mechanism for full screen - at least some apps now "fake it" to avoid pissing off users).
Although its all of a sudden introduced this nasty bug: It steals focus away from the address bar which is horrible.