title: mod_pagespeed: Combine Javascript, CSS not working with SSL
body: <p>I am using mod_pagespeed. When using http, combine js, css and rewrite js and css work fine. However, when I switch to https, none of these four functions work. The apache error log is empty about this.</p>
  
  <p>This is the relevant conf line
  ModPagespeedEnableFilters rewrite_javascript,rewrite_css,combine_css,combine_javascript,insert_dns_prefetch</p>