Keep light status bar flag when opening notification shade

Bug: 19233606
Change-Id: I20e50c7267b8c1cd035eafd54609537d493a5ea9
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index ff274b6..271ec75 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -6093,7 +6093,8 @@
             int flags = View.SYSTEM_UI_FLAG_FULLSCREEN
                     | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                     | View.SYSTEM_UI_FLAG_IMMERSIVE
-                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
+                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+                    | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
             if (mHideLockScreen) {
                 flags |= View.STATUS_BAR_TRANSLUCENT | View.NAVIGATION_BAR_TRANSLUCENT;
             }