EFForg/https-everywhere — pull request #134 by arthuredelstein (2014-01-31 11:20:53+00:00)
Title: Force youtube.com's googlevideo.com XHRs to use https

When youtube is used in HTML5 mode, the web page makes XMLHttpRequests to various subdomains of googlevideo.com. These requests return *the* HTML5 video and/or audio file that is to be played on the
web page. Unless this rule is applied, the youtube page makes http requests by default.