Download shelf autohides on showing in shell, just same as regular open

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

 // Copyright (c) 2012 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_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_VIEW_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 34 matching lines @@
                           public views::ButtonListener,
                           public views::LinkListener,
                           public views::MouseWatcherListener {
  public:
   DownloadShelfView(Browser* browser, BrowserView* parent);
   virtual ~DownloadShelfView();
 
   // Sent from the DownloadItemView when the user opens an item.
   void OpenedDownload(DownloadItemView* view);
 
+  // Sent from the DownloadItemView when the user shows item in shell.
+  void ShownDownload(DownloadItemView* view);
+
   // Returns the relevant containing object that can load pages.
   // i.e. the |browser_|.
   content::PageNavigator* GetNavigator();
 
   // Returns the parent_.
   BrowserView* get_parent() { return parent_; }
 
   // Implementation of View.
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
@@ skipping 86 matching lines @@
 
   // The window this shelf belongs to.
   BrowserView* parent_;
 
   views::MouseWatcher mouse_watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadShelfView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_DOWNLOAD_DOWNLOAD_SHELF_VIEW_H_