Hide private DNS settings UI in Guest mode to prevent guest
users modifying global private DNS settings.
Bug: 206987762
Test: 1. make RunSettingsRoboTests \
ROBOTEST_FILTER=PrivateDnsPreferenceControllerTest
2. Switch to Guest user and check if the private DNS UI is
hidden or not.
Change-Id: Iebfb8684da3be32110decd9e8447dd07b1c40387
Running Settings Robolectric tests
The full suite
$ croot
$ make RunSettingsRoboTests
Running a single test class
$ croot
$ make RunSettingsRoboTests ROBOTEST_FILTER=<ClassName>
For example:
make RunSettingsRoboTests ROBOTEST_FILTER=CodeInspectionTest
You can also use partial class name in ROBOTEST_FILTER. If the partial class name matches multiple file names, all of them will be executed.