Enable surfacing of notification children

Yo Dawg, I herd you like notifications, so I put a
notification in your notification so you can be
interrupted while you are being interrupted.

Bug: 15869874
Bug: 15188947
Change-Id: I6c733d6f8e8a04f85036182f82d3e945c6feb5bc
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index 7513fc6..195da46 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -1680,7 +1680,7 @@
     }
 
     @Override
-    public void onHeightChanged(ExpandableView view) {
+    public void onHeightChanged(ExpandableView view, boolean needsAnimation) {
 
         // Block update if we are in quick settings and just the top padding changed
         // (i.e. view == null).