I'm not sure why everyone is so up in arms here. I don't see how this change is detrimental to the web or somehow good for Google. Hiding the "https://" seems like a perfectly fine idea as long as there's a clear way to distinguish between https and http pages. Safari's done this for a long time; https pages display a tiny padlock icon and http pages display a much more prominent "Not Secure — " prefix (i.e. the obvious display is when you're insecure, which is the right way to go about things).

Hiding "www" seems less meaningful. I'm not really sure what the motivation is there, beyond the fact that the "www" prefix is mostly just aesthetics. My best guess is they want the url to start with "google.com" instead of "www.google.com", except that's not helpful from a security standpoint at all and might be slightly detrimental, if it trains people that the very first word they encounter is the most important, as paypal.whatever.com is not in fact paypal. But a lot of domains already elide the "www" anyway.

Of course, in both cases I am assuming that putting focus on the URL bar will display the full URL.