Rich, I would have to answer that I am not aware of them selling the SSL certificates - because I would think that may violate some anti-trust legislation somewhere. I do know they are a domain registrar and registrars usually sell such certificates. So I did a bit of searching and found this:
"Google in June introduced an invitation-only domain registration service called Google Domains, nine years after it paid to become an ICANN-accredited domain registrar. Google Domains offers a handful of services but doesn't (yet?) sell SSL/TLS certificates. Nevertheless, some of its website building partners, including Squarespace and Shopify, offer some form of SSL support." (from an article on InformationWeek.com)
So there may be a bit of "self-influence" in the recent announcement. :(
~ Bill
~ USPictures.com