I don't care about name, just the functionality. It could be called Secure Login, Autocomplete or other things. As long as it works correctly.
Another thing I forgot to mention which is quite important. It works well when your password store is encrypted. It allows browser to ask you for your master password when you are trying to log in to the page, not when you happen to visit page that password is stored. This makes feasible to use configuration where the password is forgotten either immediatelly or after few minutes. Having encrypted password store in FF or Chrome and not storing the password all the time in memory is essentially unusable.
Another thing I forgot to mention which is quite important. It works well when your password store is encrypted. It allows browser to ask you for your master password when you are trying to log in to the page, not when you happen to visit page that password is stored. This makes feasible to use configuration where the password is forgotten either immediatelly or after few minutes. Having encrypted password store in FF or Chrome and not storing the password all the time in memory is essentially unusable.