Merge "Properly compute scroll for Taskbar All Apps." into udc-dev

quickstep/src/com/android/launcher3/taskbar/allapps/TaskbarAllAppsController.java

@@ -149,4 +149,10 @@ public final class TaskbarAllAppsController {
         // Allow null-pointer since this should only be null if the apps view is not showing.
         return mAppsView.getActiveRecyclerView().getClipBounds().top;
     }
+
+    @VisibleForTesting
+    public int getTaskbarAllAppsScroll() {
+        // Allow null-pointer since this should only be null if the apps view is not showing.
+        return mAppsView.getActiveRecyclerView().computeVerticalScrollOffset();
+    }
 }