Stash the bar after settling in Overview

Test: https://recall.googleplex.com/projects/81822932-8526-4ee7-b5f7-4ef6d6603f1d/sessions/f0f7a3db-76b6-4f60-87e8-8918bd6cf180
Bug: 193938970
Change-Id: Ic08d3156f5c78a34f353783b760d5cf098e442e8
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index 7985ab5..15378e0 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -197,6 +197,10 @@
         return (getVisibleElements(launcher) & elements) == elements;
     }
 
+    public boolean isTaskbarStashed() {
+        return false;
+    }
+
     /**
      * Fraction shift in the vertical translation UI and related properties
      *