Wake CFXObserver when Settings if foreground Don't track CFXSettings anymore

Summary: Change-Id: I766dfd81e81365ab65372ba9b9e8e365979d2bad

Test Plan: should win

Reviewers: synergy, randall.rushing, RaymanFX

Reviewed By: RaymanFX

Differential Revision: http://review.codefirex.com/D256

Change-Id: I6bdd18b886e8aa18ec6393808950da90f57eba2c