tree 9fda37e191bf9ca796ab9ee39c365550f8b1da34
parent d97641e126449887ff808326e54b8ecde27d7230
author Heemin Seog <hseog@google.com> 1540492548 -0700
committer Heemin Seog <hseog@google.com> 1540585475 -0700

Migrate Display Settings to Preferences.

Display settings can be represented with SwitchPreference and
SeekBarPreference. Note that SeekBarPreference looks slightly different
than what originally existed (seek bar is not aligned with text), but
this can be changed via changing the preference styles in the future.

Also, actual testing of the change of the display brightness was not
observed on the Mojave, because there isn't a correct LightsService
built to handle it. Still, all of the logic remains the same as before.

We include our own version of SeekBarPreference due to the inflexibility
of the standard SeekBarPreference. We add a functionality to send
continuous updates to the listener while changing the seek bar.

Bug: 117336555
Test: Build, Manual, Robolectric unit tests
Change-Id: I4c1f96fcfc414ca77c1addec64ab76a4c5e434d2