mozilla-b2g/gaia — pull request #1808 by fabi1cazenave (2012-06-19 16:35:10+00:00)
Title: document.mozL10n => navigator.mozL10n

follow-up of issue #1805.

I remember this question has been discussed on m.d.webAPI and I don’t think anybody objected about `document.mozL10n`. I would say that it looks like a property of the document itself but that’s just my 2¢.
https://groups.google.com/d/topic/mozilla.dev.webapi/Pb6w22fTcnk/discussion