Move logic for FR in demo mode out of Settings

Bug: 62712426
Test: make \
ROBOTEST_FILTER="(MasterClearTest|FactoryResetPreferenceControllerTest
|UtilsTest)" \
RunSettingsRoboTests -j100
Change-Id: I5e287c3d4a6a7050bda78187c52aec19e90b50bc
9 files changed