Add gesture input enable settings

Bug: 6845325
Change-Id: I3165465b0b280e32a9288da16abb75baa67288dc
diff --git a/java/res/xml/prefs.xml b/java/res/xml/prefs.xml
index bf88058..4f11cb7 100644
--- a/java/res/xml/prefs.xml
+++ b/java/res/xml/prefs.xml
@@ -87,6 +87,12 @@
             android:persistent="true"
             android:defaultValue="true" />
         <CheckBoxPreference
+            android:key="gesture_input"
+            android:title="@string/gesture_input"
+            android:summary="@string/gesture_input_summary"
+            android:persistent="true"
+            android:defaultValue="true" />
+        <CheckBoxPreference
             android:key="usability_study_mode"
             android:title="@string/prefs_usability_study_mode"
             android:persistent="true"