Google Chrome already support HTTP Strict Transport Security (HSTS) like Firefox 4. Chrome also allows users to set forced HSTS for particular websites. Hence, you can opt to connect certain websites using HTTPS only.
To set your preferences for this, open chrome://net-internals/#hsts in Google Chrome. Now, you can enter desired domain names. Chrome will always try to connect to these websites using HTTPS. Of course, it will work only with the websites supporting HTTPS. ;)
Also see: Hide HTTP referrer information in Chrome