Revert DND toggle back to a button

Test: manual, Robotests
Fixes: 188616179
Change-Id: I70b469ff6ef809056c9eceec7f87f91aed9a23ca

res/layout/zen_mode_settings_button.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2017 The Android Open Source Project
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:paddingStart="?android:attr/listPreferredItemPaddingStart"
+    android:orientation="vertical">
+
+    <TextView
+        android:text="@string/zen_mode_settings_summary"
+        android:textAppearance="?android:attr/textAppearanceSmall"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/zen_mode_settings_button_margin_vertical"/>
+
+    <Button
+        android:id="@+id/zen_mode_settings_turn_on_button"
+        style="@style/ActionPrimaryButton"
+        android:layout_marginTop="@dimen/zen_mode_settings_button_margin_vertical"
+        android:layout_marginBottom="@dimen/zen_mode_settings_button_margin_vertical"
+        android:text="@string/zen_mode_button_turn_on"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"/>
+
+    <Button
+        android:id="@+id/zen_mode_settings_turn_off_button"
+        style="@style/ActionPrimaryButton"
+        android:layout_marginTop="@dimen/zen_mode_settings_button_margin_vertical"
+        android:layout_marginBottom="@dimen/zen_mode_settings_button_margin_vertical"
+        android:text="@string/zen_mode_button_turn_off"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"/>
+
+</LinearLayout>