Merge changes I6ed72bb9,Ic0eaea14,Ib481f47f,I1539adde,I6650e26d

* changes:
  ScanRequestProxy: Don't use @hide RemoteCallbackList.broadcast()
  WifiConfigStore: Remove unused @hide reference
  wifi: Use public alternatives for NetworkUtils
  wifi: Use public APIs for RouteInfo.isIPv4Default
  wifi: Use public API's for ProxyInfo
tree: cedd20ec41ba647c79faa79d4f1ce57d6f08b135
  1. apex/
  2. service/
  3. PREUPLOAD.cfg