Initial state should be unknown or we miss the first connected change.
Don't send a disconnected msg when changing network types.
Filter out redundent disconnects.
Add some logging.
bug:3060742
Change-Id: Idc797c1276b7417337a91ed60b12b1bf392d57c0
Add APNType info to notifications so you can tell what's happening. Now, even if a new APN
shares a connection with an already-connected-to- apn type, the new type will get all
the connecting and connected messages on connect and disconnecting/disconnected on disconnect
even though the shared connection remains connected.
Cleaning out the hacks MobileDataStateTracker needed to deal with the old situation.
bug:2226092
Change-Id: Iddd7421d6b91cda7c8405f9c3d5404ac04ef8e42
