Restore preference change update to show app icon setting.

Bug: 20544640
Change-Id: I6e2a26a8a5e43360dfefcc85bb46eae28f5e3867
diff --git a/java/src/com/android/inputmethod/latin/SystemBroadcastReceiver.java b/java/src/com/android/inputmethod/latin/SystemBroadcastReceiver.java
index 0d081e0..a093ec6 100644
--- a/java/src/com/android/inputmethod/latin/SystemBroadcastReceiver.java
+++ b/java/src/com/android/inputmethod/latin/SystemBroadcastReceiver.java
@@ -109,7 +109,7 @@
         context.sendBroadcast(updateIntent);
     }
 
-    private static void toggleAppIcon(final Context context) {
+    public static void toggleAppIcon(final Context context) {
         final int appInfoFlags = context.getApplicationInfo().flags;
         final boolean isSystemApp = (appInfoFlags & ApplicationInfo.FLAG_SYSTEM) > 0;
         if (Log.isLoggable(TAG, Log.INFO)) {
diff --git a/java/src/com/android/inputmethod/latin/settings/AdvancedSettingsFragment.java b/java/src/com/android/inputmethod/latin/settings/AdvancedSettingsFragment.java
index f2e1aed..a6fb7f1 100644
--- a/java/src/com/android/inputmethod/latin/settings/AdvancedSettingsFragment.java
+++ b/java/src/com/android/inputmethod/latin/settings/AdvancedSettingsFragment.java
@@ -26,6 +26,7 @@
 
 import com.android.inputmethod.latin.AudioAndHapticFeedbackManager;
 import com.android.inputmethod.latin.R;
+import com.android.inputmethod.latin.SystemBroadcastReceiver;
 import com.android.inputmethod.latin.define.ProductionFlags;
 
 /**
@@ -106,6 +107,8 @@
         if (key.equals(Settings.PREF_POPUP_ON)) {
             setPreferenceEnabled(Settings.PREF_KEY_PREVIEW_POPUP_DISMISS_DELAY,
                     Settings.readKeyPreviewPopupEnabled(prefs, res));
+        } else if (key.equals(Settings.PREF_SHOW_SETUP_WIZARD_ICON)) {
+            SystemBroadcastReceiver.toggleAppIcon(getActivity());
         }
         updateListPreferenceSummaryToCurrentValue(Settings.PREF_KEY_PREVIEW_POPUP_DISMISS_DELAY);
         refreshEnablingsOfKeypressSoundAndVibrationSettings();