Add OVERRIDE to chrome/browser/.

chrome/browser/bookmarks/bookmark_html_writer.h

 // Copyright (c) 2011 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_BOOKMARKS_BOOKMARK_HTML_WRITER_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_HTML_WRITER_H_
 #pragma once
 
 #include <list>
 #include <map>
@@ skipping 30 matching lines @@
                          const FilePath& path,
                          BookmarksExportObserver* observer);
   virtual ~BookmarkFaviconFetcher();
 
   // Executes bookmark export process.
   void ExportBookmarks();
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
+                       const content::NotificationDetails& details) OVERRIDE;
 
  private:
   // Recursively extracts URLs from bookmarks.
   void ExtractUrls(const BookmarkNode* node);
 
   // Executes Writer task that writes bookmarks data to html file.
   void ExecuteWriter();
 
   // Starts async fetch for the next bookmark favicon.
   // Takes single url from bookmark_urls_ and removes it from the list.
@@ skipping 35 matching lines @@
 // thread is used.
 // Before writing to the file favicons are fetched on the main thread.
 // TODO(sky): need a callback on failure.
 void WriteBookmarks(Profile* profile,
                     const FilePath& path,
                     BookmarksExportObserver* observer);
 
 }  // namespace bookmark_html_writer
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_HTML_WRITER_H_