mozilla-b2g/gaia — pull request #11875 by cctuan (2013-09-01 16:24:12+00:00)
Title: Bug 911576 - [Flatfish] fix bug of unwatch for screen_layout.js

https://bugzilla.mozilla.org/show_bug.cgi?id=911576

1. fix bug of unwatch function
2. user can check their watching layout by calling | getCurrentLayout(type) |, it will return boolean