title: Are self-signed certificates still supported in modern browsers?
body: <p>AFAIK, it was a common scenario to buy a production SSL certificate for mydomain.com, and use a self-signed certificate (eg using java's keytool) for CN localhost to use during development.</p>
  
  <p>In the interests of security, it seems that very recent versions of Firefox (33) and Chrome (39) may forbid this approach.</p>
  
  <p>Is that correct? If so, what is the new-fangled approach these browsers expect you to take during development?</p>