Google is ramping up its campaign against HTTP only sites and is going to mark ALL Non-HTTPS sites insecure in July 2018 with the release of Chrome 68. It’s a pretty strong move, but Google and the Internet, in general, has been moving in this direction for a while.
It started with suggestions, then forced SSL on all sites behind logins, then mixed-content warnings, then showing HTTP sites are not-secured and now it’s going to be outright marked as insecure.