I don't know how you think this is actually possible. It sounds to me like you just logged in using oauth…
Edit: Hey, downvoters, it's not possible to just use Google's login mechanism without prompting an initial OAuth flow at some point in time. If it is, instead of proving me wrong here, tell Google how and you can make some good money out of it.
Edit: Hey, downvoters, it's not possible to just use Google's login mechanism without prompting an initial OAuth flow at some point in time. If it is, instead of proving me wrong here, tell Google how and you can make some good money out of it.
As was said below, if you want, you can revoke tokens here: https://myaccount.google.com/permissions