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

ui/app_list/views/app_list_folder_view.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/app_list/views/app_list_folder_view.h"
 
 #include <algorithm>
 
 #include "ui/app_list/app_list_constants.h"
 #include "ui/app_list/app_list_folder_item.h"
@@ skipping 250 matching lines @@
     const ui::LocatedEvent& event) {
   container_view_->apps_grid_view()->UpdateDragFromReparentItem(pointer, event);
 }
 
 void AppListFolderView::DispatchEndDragEventForReparent(
     bool events_forwarded_to_drag_drop_host) {
   container_view_->apps_grid_view()->
       EndDragFromReparentItemInRootLevel(events_forwarded_to_drag_drop_host);
 }
 
+
+void AppListFolderView::HideViewImmediately() {
+  SetVisible(false);
+  hide_for_reparent_ = false;
+}
+
 void AppListFolderView::NavigateBack(AppListFolderItem* item,
                                      const ui::Event& event_flags) {
   container_view_->ShowApps(item);
 }
 
 }  // namespace app_list