downloads: clicking "remove" on chrome://downloads should also hide shelf item.

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 61 matching lines @@
   // Implementation of views::LinkListener.
   // Invoked when the user clicks the 'show all downloads' link button.
   void LinkClicked(views::Link* source, int event_flags) override;
 
   // Implementation of ButtonListener.
   // Invoked when the user clicks the close button. Asks the browser to
   // hide the download shelf.
   void ButtonPressed(views::Button* button, const ui::Event& event) override;
 
   // Implementation of DownloadShelf.
+  void RemoveDownload(content::DownloadItem* download) override;
   bool IsShowing() const override;
   bool IsClosing() const override;
   Browser* browser() const override;
 
   // Implementation of MouseWatcherListener override.
   void MouseMovedOutOfHost() override;
 
   // Removes a specified download view. The supplied view is deleted after
   // it's removed.
   void RemoveDownloadView(views::View* view);
@@ skipping 58 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_