[1/2] base: fix OmniSwitch recents integration for multi-user

we must receive service start broadcasts with the user and send
the overlay broadcasts to the correct user

Change-Id: I0ae350adcd45d99f2c2a835b94de5d86b71e6031

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java