Updates to automatic rule pages in Settings

- Re-added metrics for zen behavior preference controllers
- Dialogs in zen mode settings are rotate-friendly
- Automatic rules are refreshed on update state
- User-created (and default) automatic rules are always priority only and user cannot change this
- Automatic rules redesigned to have headers

Test: make ROBOTEST_FILTER=ZenModeAutomaticRulesPreferenceControllerTest RunSettingsRoboTests -j40
Bug: 63077372
Fixes: 68324465
Fixes: 69057696
Change-Id: I163acef2715dd4e60bfc08207f0e22352c4c0e28

src/com/android/settings/notification/ZenModeEventRuleSettings.java

@@ -60,16 +60,6 @@ public class ZenModeEventRuleSettings extends ZenModeRuleSettingsBase {
         return mEvent != null;
     }
 
-    @Override
-    protected String getZenModeDependency() {
-        return null;
-    }
-
-    @Override
-    protected int getEnabledToastText() {
-        return R.string.zen_event_rule_enabled_toast;
-    }
-
     @Override
     public void onResume() {
         super.onResume();
@@ -89,7 +79,14 @@ public class ZenModeEventRuleSettings extends ZenModeRuleSettingsBase {
 
     @Override
     protected List<AbstractPreferenceController> getPreferenceControllers(Context context) {
-        return null;
+        List<AbstractPreferenceController> controllers = new ArrayList<>();
+        mHeader = new ZenAutomaticRuleHeaderPreferenceController(context, this,
+                getLifecycle());
+        mSwitch = new ZenAutomaticRuleSwitchPreferenceController(context, this,
+                R.string.zen_event_rule_enabled_toast, getLifecycle());
+        controllers.add(mHeader);
+        controllers.add(mSwitch);
+        return controllers;
     }
 
     private void reloadCalendar() {