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

chrome/browser/importer/in_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_BROWSER_IMPORTER_IN_PROCESS_IMPORTER_BRIDGE_H_
 #define CHROME_BROWSER_IMPORTER_IN_PROCESS_IMPORTER_BRIDGE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 22 matching lines @@
   InProcessImporterBridge(ProfileWriter* writer,
                           base::WeakPtr<ExternalProcessImporterHost> host);
 
   // 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 18 matching lines @@
  private:
   ~InProcessImporterBridge() override;
 
   ProfileWriter* const writer_;  // weak
   const base::WeakPtr<ExternalProcessImporterHost> host_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessImporterBridge);
 };
 
 #endif  // CHROME_BROWSER_IMPORTER_IN_PROCESS_IMPORTER_BRIDGE_H_