mozilla-b2g/gaia — pull request #26219 by weilonge (2014-11-18 07:43:38+00:00)
Title: Bug 1093993 - [FFOS2.0][Woodduck][STK]There has no terminal response when execute "setup call ->cancel".

PR for bug 1093993

1. Fix the removeEventListener problem of onVisibilityChange to avoid sending unexpected TR.
2. Redirect visibilityChange of Settings to System app. System app handles the event is a better strategy.