Animations for Keyguard user switcher.

Bug: 15757197
Change-Id: Ia3fcc0f771cea37fc2d57181d859373c423954a7
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 e70422b..74ae4a4 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -950,7 +950,7 @@
                         ? View.VISIBLE
                         : View.INVISIBLE);
         if (mKeyguardUserSwitcher != null && mQsExpanded && !mStackScrollerOverscrolling) {
-            mKeyguardUserSwitcher.hide();
+            mKeyguardUserSwitcher.hide(true /* animate */);
         }
     }