mozilla/kitsune — pull request #1326 by rlr (2013-05-01 19:31:06+00:00)
Title: [bug 862120] Whitelist youtube iframes in the parser/bleacher.

This makes things cleaner getting rid of the PLACEHOLDER then replace with embed dance.

I added a test to make sure an iframe in the markup doesn't end up in the DOM (unescaped).

r?