Update {virtual,override} to follow C++11 style in chrome.

chrome/utility/importer/external_process_importer_bridge.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_UTILITY_IMPORTER_EXTERNAL_PROCESS_IMPORTER_BRIDGE_H_
 #define CHROME_UTILITY_IMPORTER_EXTERNAL_PROCESS_IMPORTER_BRIDGE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 36 matching lines @@
       IPC::Sender* sender,
       base::TaskRunner* task_runner);
 
   // Begin ImporterBridge implementation:
   void AddBookmarks(const std::vector<ImportedBookmarkEntry>& bookmarks,
                     const base::string16& first_folder_name) override;
 
   void AddHomePage(const GURL& home_page) override;
 
 #if defined(OS_WIN)
-  virtual void AddIE7PasswordInfo(
+  void AddIE7PasswordInfo(
       const importer::ImporterIE7PasswordInfo& password_info) override;
 #endif
 
   void SetFavicons(const favicon_base::FaviconUsageDataList& favicons) override;
 
   void SetHistoryItems(const std::vector<ImporterURLRow>& rows,
                        importer::VisitSource visit_source) override;
 
   void SetKeywords(
       const std::vector<importer::SearchEngineInfo>& search_engines,
@@ skipping 25 matching lines @@
   // bundle isn't available to the external process.
   scoped_ptr<base::DictionaryValue> localized_strings_;
 
   IPC::Sender* sender_;
   scoped_refptr<base::TaskRunner> task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalProcessImporterBridge);
 };
 
 #endif  // CHROME_UTILITY_IMPORTER_EXTERNAL_PROCESS_IMPORTER_BRIDGE_H_