Add impl for force stop action

Also refactor the AnomalyAction so it could take source id as
a parameter, which represents the fragment that invokes it.

Bug: 36924669
Test: RunSettingsRoboTests
Change-Id: Ib53865f92e1a6f1e9dcc1480c0c74fbcfb0226f4

src/com/android/settings/fuelgauge/PowerUsageSummary.java

@@ -169,7 +169,7 @@ public class PowerUsageSummary extends PowerUsageBase implements
                 KEY_TIME_SINCE_LAST_FULL_CHARGE);
         mFooterPreferenceMixin.createFooterPreference().setTitle(R.string.battery_footer_summary);
         mAnomalySummaryPreferenceController = new AnomalySummaryPreferenceController(
-                (SettingsActivity) getActivity(), this);
+                (SettingsActivity) getActivity(), this, MetricsEvent.FUELGAUGE_POWER_USAGE_SUMMARY);
         mBatteryUtils = BatteryUtils.getInstance(getContext());
         mAnomalySparseArray = new SparseArray<>();