Remove the animation delay for showing the top level apps when user opens app list launcher.

ui/app_list/views/apps_container_view.h

Index: ui/app_list/views/apps_container_view.h
diff --git a/ui/app_list/views/apps_container_view.h b/ui/app_list/views/apps_container_view.h
index 36cd31d1781d0d5e2bc724252a221e6f0adb7bcf..c3352f7f3636296d11c8eb9d2eec0965fc2462a2 100644
--- a/ui/app_list/views/apps_container_view.h
+++ b/ui/app_list/views/apps_container_view.h
@@ -74,7 +74,7 @@ class AppsContainerView : public views::View,
     SHOW_ITEM_REPARENT,
   };
 
-  void SetShowState(ShowState show_state);
+  void SetShowState(ShowState show_state, bool show_apps_with_animation);
 
   // Calculates the top item icon bounds in the active folder icon. The bounds
   // is relative to AppsContainerView.
@@ -101,6 +101,10 @@ class AppsContainerView : public views::View,
 
   size_t top_icon_animation_pending_count_;
 
+  // If true, shows top level apps with animation.
+  // Otherwise, do not animate the UI change.
+  bool show_apps_with_animation_;
+
   DISALLOW_COPY_AND_ASSIGN(AppsContainerView);
 };