Implements the buttons layout for the extra defend

Bug: 235246949
Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.fuelgauge.*
Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.widget.CardPreferenceTest
Test: manual test
Change-Id: I1dc4ab31adf85c684a4c09bd6c9bcfb54b52dc3c
13 files changed