tree d3035c9e6b68377391932244bc594e3701d3b897
parent faa90620b202c1b1d87526cb7a92dde4607d56aa
author Zhen Zhang <zzhen@google.com> 1576892666 -0800
committer Zhen Zhang <zzhen@google.com> 1578383730 -0800

Create preference controller for each tethering option

These controllers are responsible for persisting preference values and
managing the visibility and switch state. TetherEnabler will be
listening to changes of shared prefernce values and turn on/off
corresponding type of tethering when tethering is on at that time.

Bug: 146582865
Test: tests are created for each controller class.
Change-Id: I7e601b2bd693da59269517d2988bade7475e7f12