List of secure websites
code.google.com
code.google.com
Search for "noisebridge", which is right around where all the small sites start.
How big will that file get in a few years? Looks like the first addition of user submitted websites was done over a year ago.
I wonder how ubiquitous HTTP/2 (TLS mandatory) will affect this.
edit: removed acronym
But if they are a group doing media and content websites, HSTS and full SSL are still hard to accomplish due to the advertising industry dragging it's collective feet and knuckles.
Couldn't Chrome just phone home to a secure server to retrieve HSTS data every once and awhile (just like updates).