MD Downloads: check for removed files on page load

chrome/browser/ui/webui/md_downloads/md_downloads_dom_handler.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_WEBUI_MD_DOWNLOADS_MD_DOWNLOADS_DOM_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_MD_DOWNLOADS_MD_DOWNLOADS_DOM_HANDLER_H_
 
 #include <stdint.h>
 
 #include <set>
@@ skipping 112 matching lines @@
 
   // Returns the download that is referred to in a given value.
   content::DownloadItem* GetDownloadByValue(const base::ListValue* args);
 
   // Returns the download with |id| or NULL if it doesn't exist.
   content::DownloadItem* GetDownloadById(uint32_t id);
 
   // Remove all downloads in |to_remove| with the ability to undo removal later.
   void RemoveDownloads(const DownloadVector& to_remove);
 
+  // Checks whether a download's file was removed from its original location.
+  void CheckForRemovedFiles();
+
   DownloadsListTracker list_tracker_;
 
   // IDs of downloads to remove when this handler gets deleted.
   std::vector<IdSet> removals_;
 
   base::WeakPtrFactory<MdDownloadsDOMHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MdDownloadsDOMHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_MD_DOWNLOADS_MD_DOWNLOADS_DOM_HANDLER_H_