[automerger skipped] WifiServiceImpl: Allow setWifiEnabled for system apps
am: d8d7cbce40 -s ours
am skip reason: change_id I095f9755c60034064e467dedcdb16b33dc63d9eb with SHA1 949a9784e4 is in history

Change-Id: If7addc79c24ee4553fd83a7caaa326bbcd3298f8