Add an option to use or not the contacts dictionary.

Bug: 4586840
Change-Id: If62cd57e5ab661e6a51a5442d09bf0af8f08f263
diff --git a/java/res/xml/prefs.xml b/java/res/xml/prefs.xml
index b0497a5..5f4a27d 100644
--- a/java/res/xml/prefs.xml
+++ b/java/res/xml/prefs.xml
@@ -138,6 +138,12 @@
           <ListPreference
               android:key="pref_key_preview_popup_dismiss_delay"
               android:title="@string/key_preview_popup_dismiss_delay" />
+          <CheckBoxPreference
+             android:key="pref_key_use_contacts_dict"
+             android:title="@string/use_contacts_dict"
+             android:summary="@string/use_contacts_dict_summary"
+             android:persistent="true"
+             android:defaultValue="true" />
     </PreferenceScreen>
     <!-- <Preference
         android:title="Debug Settings"