Isolate NetworkStateTracker creation, test.

Change ConnectivityService to use a factory when creating
NetworkStateTrackers, which gives us a good place to inject mocks
for testing.  Add initial tests to verify that network routes are
added and removed as networks changed.

Change-Id: I11cbc61a84c2ed4afa2670036295b1494eab26e1
2 files changed
tree: 5c5b6a22e863847ee16128ce153fd623b5260b0c
  1. core/
  2. services/