Go to the Chrome settings page, and under the "Users" heading, choose "Add New User." Then you can pick an icon, that appears up in the browser's title bar. That icon helps you remember what user you're browsing under.
It might ask you if you want to setup sync after creating a user, but you can just close that window and it won't ask you again.
Click the icon in the top right corner of the title bar, and you can change what user you're browsing as at the moment.
Thanks, configured this but I was hoping something else. Turns out this is akin to creating a new FF profile user, which doesn't really resolve the Google Chrome auth issue directly, but nonetheless another dirty workaround for Google's horrible multiple account management.
