The idea of multiple processes serving as home was unfeasible. - Revert "Allow for more than one home app." commit e428a7f662f109a5f2015008e3161df23932483e. - Assign ActivityManagerService.mHomeProcess to the process of the root activity of the home task. Addresses bug 10342471. Change-Id: Ifb494626107d24de1306e320a18206d5b176a7c0