Fix app list drag view being hidden on reparent when synchronous drag is setting up.

ui/app_list/views/app_list_folder_view.h

 // 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.
 
 #ifndef UI_APP_LIST_VIEWS_APP_LIST_FOLDER_VIEW_H_
 #define UI_APP_LIST_VIEWS_APP_LIST_FOLDER_VIEW_H_
 
 #include "ui/app_list/app_list_item_list_observer.h"
 #include "ui/app_list/views/apps_grid_view.h"
 #include "ui/app_list/views/apps_grid_view_folder_delegate.h"
@@ skipping 86 matching lines @@
   virtual void ReparentItem(AppListItemView* original_drag_view,
                             const gfx::Point& drag_point_in_folder_grid)
       OVERRIDE;
   virtual void DispatchDragEventForReparent(
       AppsGridView::Pointer pointer,
       const gfx::Point& drag_point_in_folder_grid) OVERRIDE;
   virtual void DispatchEndDragEventForReparent(
       bool events_forwarded_to_drag_drop_host) OVERRIDE;
   virtual bool IsPointOutsideOfFolderBoundary(const gfx::Point& point) OVERRIDE;
   virtual bool IsOEMFolder() const OVERRIDE;
+  virtual void SetRootLevelDragViewVisible(bool visible) OVERRIDE;
 
   AppsContainerView* container_view_;  // Not owned.
   AppListMainView* app_list_main_view_;   // Not Owned.
   FolderHeaderView* folder_header_view_;  // Owned by views hierarchy.
   AppsGridView* items_grid_view_;  // Owned by the views hierarchy.
 
   scoped_ptr<views::ViewModel> view_model_;
 
   AppListModel* model_;  // Not owned.
   AppListFolderItem* folder_item_;  // Not owned.
 
   scoped_ptr<PaginationModel> pagination_model_;
 
   bool hide_for_reparent_;
 
   base::string16 accessible_name_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListFolderView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APP_LIST_FOLDER_VIEW_H_