mozilla/fireplace — pull request #714 by mstriemer (2014-10-10 21:59:25+00:00)
Title: Handle FxA sign in from email (bug 1080868)

https://bugzilla.mozilla.org/show_bug.cgi?id=1080868

Reuse the window that was used for FxA sign in if there is no `window.opener`. This enables sign in when the user navigates to FxA from one of our pre-verified emails.