Add a flag for controlling location indicator settings.

Bug: 177334097
Test: Manual && make RunSettingsRoboTests ROBOTEST_FILTER=LocationIndicatorsPreferenceControllerTest
Change-Id: I33821ab8328fd18b796a78813b7354a928832792
diff --git a/src/com/android/settings/Utils.java b/src/com/android/settings/Utils.java
index eca3869..e44ee78 100644
--- a/src/com/android/settings/Utils.java
+++ b/src/com/android/settings/Utils.java
@@ -148,6 +148,12 @@
     public static final String PROPERTY_LOCATION_INDICATORS_ENABLED = "location_indicators_enabled";
 
     /**
+     * Whether to show location indicator settings in developer options.
+     */
+    public static final String PROPERTY_LOCATION_INDICATOR_SETTINGS_ENABLED =
+            "location_indicator_settings_enabled";
+
+    /**
      * Finds a matching activity for a preference's intent. If a matching
      * activity is not found, it will remove the preference.
      *