Switch settings to use TimeDetector

Switch settings to use TimeDetector when setting the system clock rather
than using AlarmManager directly.

Bug: 140712361
Test: treehugger
Test: manual
Test: make -j30 RunSettingsRoboTests ROBOTEST_FILTER=TimePreferenceControllerTest
Test: make -j30 RunSettingsRoboTests ROBOTEST_FILTER=DatePreferenceControllerTest
Change-Id: I671bf0e7e7364f64f1397d524c6277591eb4e22e
3 files changed