SystemUI: API updates

Change-Id: I5a1cfd8089084af299fe26e8b5b65f7b945777f2

Conflicts:
	packages/SystemUI/src/com/android/systemui/quicksettings/BrightnessTile.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/pie/PieSysInfo.java
	packages/SystemUI/src/com/android/systemui/statusbar/policy/PieController.java