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 <stddef.h>
 
 #include <vector>
@@ skipping 32 matching lines @@
                           public gfx::AnimationDelegate,
                           public DownloadShelf,
                           public views::VectorIconButtonDelegate,
                           public views::LinkListener,
                           public views::MouseWatcherListener {
  public:
   DownloadShelfView(Browser* browser, BrowserView* parent);
   ~DownloadShelfView() override;
 
   // Sent from the DownloadItemView when the user opens an item.
-  void OpenedDownload();
+  void OnDownloadOpened();
+
+  // Sent from the DownloadItemView when the user shows an item in shell.
+  void OnDownloadShown();
 
   // 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.
   gfx::Size GetPreferredSize() const override;
@@ skipping 57 matching lines @@
   // Overridden from views::View.
   void OnThemeChanged() override;
 
   // Called when the "close shelf" animation ended.
   void Closed();
 
   // Returns true if we can auto close. We can auto-close if all the items on
   // the shelf have been opened.
   bool CanAutoClose();
 
+  // Starts mouse watcher if we can auto close.
+  void TriggerAutoClose();
+
   // Returns the color of text for the shelf (used for deriving icon color).
   SkColor GetTextColorForIconMd();
 
   // The browser for this shelf.
   Browser* browser_;
 
   // The animation for adding new items to the shelf.
   gfx::SlideAnimation new_item_animation_;
 
   // The show/hide animation for the shelf itself.
@@ skipping 12 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_