Rename WifiConfigManager.getConfiguredNetworks()

Rename WifiConfigManager.getConfiguredNetworks() and related methods
to WifiConfigManager.getSavedNetworks, since it better reflects
what this method does (i.e. get all configured networks except
ephemeral networks). While there, add comments for some previously
undocumented helper methods.

BUG: 28088229
Change-Id: I30e144b46277605f5847371d9e65b70306013cf5
TEST: 'runtest frameworks-wifi' passes.
5 files changed
tree: 2d6d08229e0b9054631a22297970a521b0b22292
  1. service/
  2. tests/