Tap gesture settings

Tap setting is similar to double tap, it will wake-up the phone
when invoked. This setting page allows for configuration since both
gestures aren't mutually exclusive.

Change-Id: Ia62a1fafcc108e3c0b14613cb30224eae7b35f6a
Fixes: 121198822
Test: make RunSettingsRoboTests
diff --git a/res/xml/gestures.xml b/res/xml/gestures.xml
index df86251..4b17bd9 100644
--- a/res/xml/gestures.xml
+++ b/res/xml/gestures.xml
@@ -64,6 +64,12 @@
         settings:controller="com.android.settings.gestures.SwipeUpPreferenceController" />
 
     <Preference
+        android:key="gesture_tap_screen_input_summary"
+        android:title="@string/ambient_display_tap_screen_title"
+        android:fragment="com.android.settings.gestures.TapScreenGestureSettings"
+        settings:controller="com.android.settings.gestures.TapScreenGesturePreferenceController" />
+
+    <Preference
         android:key="gesture_double_tap_screen_input_summary"
         android:title="@string/ambient_display_title"
         android:fragment="com.android.settings.gestures.DoubleTapScreenSettings"