[1] [CITE@en[1311807 - Some images and media players delayed for minutes]]
([TIME[2017-10-28 22:39:57 +09:00]])
<https://bugzilla.mozilla.org/show_bug.cgi?id=1311807>

[2] [CITE@en[webappsec-mixed-content/proposed-level-2-roadmap.md at master · mikewest/webappsec-mixed-content]]
([TIME[2017-10-28 22:40:23 +09:00]])
<https://github.com/mikewest/webappsec-mixed-content/blob/master/proposed-level-2-roadmap.md>