Facebook Login and OpenID Connect

No it isn't at the moment. Uses OAuth2 (also used by OIDC)

This page

https://developers.google.com/identity/

states that the "Google Sign-In" secure authentication system "gives you ... federated sign-in with ... Facebook".

Google Sign-In is based on OpenID Connect.

I am not sure if the actually answers your question in the affirmative because the rest of the page only talks about signing in with Google.