re-use WebUIs

chrome/browser/ui/webui/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_DOWNLOADS_DOM_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_DOWNLOADS_DOM_HANDLER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 100 matching lines @@
   std::wstring search_text_;
 
   // Our model
   content::DownloadManager* download_manager_;
 
   // If |download_manager_| belongs to an incognito profile than this
   // is the DownloadManager for the original profile; otherwise, this is
   // NULL.
   content::DownloadManager* original_profile_download_manager_;
 
+  // True once the page has loaded the first time (it may load multiple times,
+  // e.g. on reload).
+  bool initialized_;
+
   // The current set of visible DownloadItems for this view received from the
   // DownloadManager. DownloadManager owns the DownloadItems. The vector is
   // kept in order, sorted by ascending start time.
   // Note that when a download item is removed, the entry in the vector becomes
   // null.  This should only be a transient state, as a ModelChanged()
   // notification should follow close on the heels of such a change.
   typedef std::vector<content::DownloadItem*> OrderedDownloads;
   OrderedDownloads download_items_;
 
   base::WeakPtrFactory<DownloadsDOMHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadsDOMHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_DOWNLOADS_DOM_HANDLER_H_