35. Signing In FriendlyChat

INSTRUCTOR NOTE:

Solution Diff: 1.05-firebase-auth-signin-signout-setup

On newer versions of FirebaseUI for Android - Auth, you may notice that the method setProviders(String... providers) is deprecated. The newer version of the API setProviders(List<IdpConfig> idpConfigs), taking in a List instead of a series of Strings. Check out the documentation for the latest API usage instructions.