title: Send username and password to google oauth authentication
body: <p>I'm developping an application in android that provides information about different places. I've though of storing images of these places in picasa and retrieve them using the google apis, for this I created a new google account for the user holding the images. </p>
  
  <p>The problem is when I start the oauth process for obtaining the token, I got a new web page asking for the username and password. As this is a technical user, all the end users will not know about the users and pwd.</p>
  
  <p>Is there a way to send the username and password together with the other oauth values (client_id, secret_id, redirect_uri ,...?</p>
  
  <p>Thank you</p>