I have my Droid set up to sync Books, Contacts, Gmail, Picasa, and Calender in the settings area. However my contacts have not been able to sync since I got the phone.
Contacts is checked in there - maybe since I had two contacts lists up until 5 minutes ago it wouldn't sync properly - I may have to wait to see what happens. No idea. All that's checked is contacts not all the rest of the options like friends - but they should all be in contacts.
Just for giggles go to MY ACCOUNTS on your Bionic and double check the gmail account thats listed in there please.
If you see the right account listed tap on it and make sure all the Sync options are checked.