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

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 "grit/ui_strings.h"
 #include "ui/accessibility/ax_view_state.h"
@@ skipping 284 matching lines @@
   if (items_grid_view()->dragging())
     items_grid_view()->EndDrag(true);
   items_grid_view()->ClearAnySelectedView();
   container_view_->ShowApps(folder_item_);
 }
 
 bool AppListFolderView::IsOEMFolder() const {
   return folder_item_->folder_type() == AppListFolderItem::FOLDER_TYPE_OEM;
 }
 
+void AppListFolderView::SetRootLevelDragViewVisible(bool visible) {
+  container_view_->apps_grid_view()->SetDragViewVisible(visible);
+}
+
 void AppListFolderView::GetAccessibleState(ui::AXViewState* state) {
   state->role = ui::AX_ROLE_BUTTON;
   state->name = accessible_name_;
 }
 
 void AppListFolderView::NavigateBack(AppListFolderItem* item,
                                      const ui::Event& event_flags) {
   CloseFolderPage();
 }
 
 void AppListFolderView::GiveBackFocusToSearchBox() {
   app_list_main_view_->search_box_view()->search_box()->RequestFocus();
 }
 
 void AppListFolderView::SetItemName(AppListFolderItem* item,
                                     const std::string& name) {
   model_->SetItemName(item, name);
 }
 
 }  // namespace app_list