New Settings preference for One Handed mode

Add toggles in Settings location:
Settings > System > Gesture > One-Handed

Bug: 151130376

Test: manual check Settings > System > Gesture > One-Handed
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures.OneHandedSettingsTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures
      .OneHandedAppTapsExitPreferenceControllerTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures
      .OneHandedEnablePreferenceControllerTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures
      .OneHandedTimeoutPreferenceControllerTest"
Test: make RunSettingsRoboTests ROBOTEST_FILTER=
      "com.android.settings.gestures.OneHandedSettingsUtilsTest"

Change-Id: Iafbd3ad051ff0f9c2f4a1b6fcacdccc137b65d0c
diff --git a/res/xml/gestures.xml b/res/xml/gestures.xml
index a523ec6..73b2070 100644
--- a/res/xml/gestures.xml
+++ b/res/xml/gestures.xml
@@ -54,6 +54,12 @@
         settings:controller="com.android.settings.gestures.SystemNavigationPreferenceController" />
 
     <Preference
+        android:key="gesture_one_handed"
+        android:title="@string/one_handed_title"
+        android:fragment="com.android.settings.gestures.OneHandedSettings"
+        settings:controller="com.android.settings.gestures.OneHandedEnablePreferenceController" />
+
+    <Preference
         android:key="gesture_tap_screen_input_summary"
         android:title="@string/ambient_display_tap_screen_title"
         android:fragment="com.android.settings.gestures.TapScreenGestureSettings"
diff --git a/res/xml/one_handed_settings.xml b/res/xml/one_handed_settings.xml
new file mode 100644
index 0000000..04ef705
--- /dev/null
+++ b/res/xml/one_handed_settings.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Copyright (C) 2020 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.
+  -->
+
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:settings="http://schemas.android.com/apk/res-auto"
+    android:persistent="false"
+    android:title="@string/one_handed_title">
+
+    <SwitchPreference
+        android:key="gesture_one_handed_mode_enabled"
+        android:title="@string/one_handed_mode_enabled"
+        settings:controller="com.android.settings.gestures.OneHandedEnablePreferenceController"/>
+
+    <SwitchPreference
+        android:key="gesture_app_taps_to_exit"
+        android:title="@string/one_handed_app_taps_to_exit"
+        settings:controller="com.android.settings.gestures.OneHandedAppTapsExitPreferenceController"/>
+
+    <ListPreference
+        android:entries="@array/one_handed_timeout_title"
+        android:entryValues="@array/one_handed_timeout_values"
+        android:key="one_handed_timeout_preference"
+        android:persistent="false"
+        android:title="@string/one_handed_timeout_title"
+        settings:controller="com.android.settings.gestures.OneHandedTimeoutPreferenceController"/>
+</PreferenceScreen>