Added zen settings messages and calls preferences.

- Made ZenModeSettings and ZenModeBehaviorSettings a DashboardFragment
- Switches in ZenModeBehaviorSettings all have their own preference controllers
- Instead of a dropdown, messages & calls have their own pages & preference controllers
- Added basic turn on/off DND button in settings (dialog not yet implemented)

Bug: 63077372
Fixes: 69057767
Test: make -j40 RunSettingsRoboTests
Change-Id: I1c70f77053713f66f873ee578477f23cfd7985bb

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

@@ -0,0 +1,34 @@
+package com.android.settings.notification;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.core.AbstractPreferenceController;
+
+public class ZenModeAutomationPreferenceController extends
+        AbstractPreferenceController implements PreferenceControllerMixin {
+
+    protected static final String KEY_ZEN_MODE_AUTOMATION = "zen_mode_automation_settings";
+    private final ZenModeSettings.SummaryBuilder mSummaryBuilder;
+
+    public ZenModeAutomationPreferenceController(Context context) {
+        super(context);
+        mSummaryBuilder = new ZenModeSettings.SummaryBuilder(context);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_ZEN_MODE_AUTOMATION;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        preference.setSummary(mSummaryBuilder.getAutomaticRulesSummary());
+    }
+}