WifiServiceImpl: Add permission check for async message handling

The async messages received from WifiManager API's are not being checked
for any permissions. So, add a permission check for all such messages to
prevent unauthorized apps from triggering wifi operations.

Bug: 62350187
Test: Unit tests
Change-Id: Ic855f6503671766cc2397df7bb393ca957375c40
4 files changed
tree: aca803943742a4c3e0d140b55f2fbdcf824b53c0
  1. service/
  2. PREUPLOAD.cfg