tree 2b8f521b6fe4ffdbc1f253b054c0097aea3cb3e7
parent 0ab0dd317f6f2f22ed894077c1e4268bbfbdf070
author Christopher Wiley <wiley@google.com> 1464045450 -0700
committer Christopher Wiley <wiley@google.com> 1465317131 -0700

Consolidate cleanup logic in TetherInterfaceSM.TetheredState

( cherry-pick of f54c5a932a9ac4a491ce775b21ff8288e40b5bad )

This pushes all TetheredState cleanup logic into a single place.
All new unittests fail without the changes to TetherInterfaceSM.

Bug: 28915272
Test: Compiles, unittests pass, WiFi tethering continues to work.

Change-Id: Ia7bf210e00e9a54f2797baebc2e5333ce314c947