Merge "Add unit tests for AttentionManagerService. Make sure it won't crash...
Merge "Add unit tests for AttentionManagerService. Make sure it won't crash when OnSwitchUser() is invoked while the bound service is null." into qt-dev am: a8853fe2
am: 60ea826a
Change-Id: Ie014542508737acf527495483c869619acd7f1e1