[WifiSettings] Add Wi-Fi dialog activity
Add a Wi-Fi dialog activity that can be started by setup wizard to
connect to a Wi-Fi access point.
Also refactored mEdit and mModify in WifiConfigController into an
int-enum mMode, with modes view, connect and modify. This is how the
new modes maps to the old flags:
MODE_VIEW -- mEdit = false, mModify = *
MODE_CONNECT -- mEdit = true, mModify = false
MODE_MODIFY -- mEdit = true, mModify = true
Bug: 23426311
Change-Id: I8e2221fd3c42577068e07686dab245dd5888e0ae
8 files changed