Just added an example for Symfony sfMelodyPlugin for Google. I think there should be such an example because It’s a bit more complicated then setup a melody for facebook.
Here it is: https://github.com/alexfilatov/sfMelodyPlugin
key: anonymoussecret: anonymous
key: anonymous and secret: anonymous – just for development purposes. In production you need to register your domain in Google.
This is how Google sends contacts data back. You can dump the contacts data response in https://github.com/gimler/sfOAuthPlugin (file sfOauth1.class.php, line 271)