No need to pass DownloadItemModel ownership.

chrome/browser/ui/views/download/download_shelf_context_menu_view.h

 // Copyright (c) 2011 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 CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_CONTEXT_MENU_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_CONTEXT_MENU_VIEW_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/download/download_shelf_context_menu.h"
 
-class DownloadItemModel;
-
 namespace content {
+class DownloadItem;
 class PageNavigator;
 }
 
 namespace gfx {
 class Rect;
 }
 
 namespace views {
 class MenuRunner;
 class Widget;
 }
 
 class DownloadShelfContextMenuView : public DownloadShelfContextMenu {
  public:
-  DownloadShelfContextMenuView(DownloadItemModel* model,
+  DownloadShelfContextMenuView(content::DownloadItem* download_item,
                                content::PageNavigator* navigator);
   virtual ~DownloadShelfContextMenuView();
 
   // |rect| is the bounding area for positioning the menu in screen coordinates.
   // The menu will be positioned above or below but not overlapping |rect|.
   void Run(views::Widget* parent_widget, const gfx::Rect& rect);
 
  private:
   scoped_ptr<views::MenuRunner> menu_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadShelfContextMenuView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_CONTEXT_MENU_VIEW_H_