I think homepage and home screen just got confused. If you mean how can you get a shortcut to google.com, you can save it as a bookmark and put that on your home screen as described by Neil154. If you mean you want it to default to google.com when you open Chrome, the current browser does not support that. The way Chrome works, with the address bar being a search bar as well, it's technically always on google's search page. personally I just went to google.com and bookmarked it, that way when you open a new tab or new session of Chrome, you can select that bookmark and be instantly there (if you wanted to see the doodle, etc). otherwise, putting anything in the address bar will give you the option to search for it, just like in desktop Chrome.