We have Facebook working great. Let's authenticate to Google now. The process will be very similar, so this shouldn't be too hard. The first thing we have to do is register an application with Google.
Go to https://console.developers.google.com/project. This page will list out all the applications that you have created with Google before. This includes any App Engine or OpenID projects. I have tried a few different services with Google, so I have a few projects here.
We want to click on the CREATE PROJECT button shown in the following screenshot:
A New Project dialog will pop up. Filling this out will be similar to Facebook's process. Project name is the name by which we will call the project. Project ID is the Google identifier for our application. It defaults to a randomly created name which we will use here. Then, click on the Create button. This can be seen in the following screenshot:
Our newly created application will be on our list now. Click on the application...