Add OVERRIDE to chrome/browser/.

chrome/browser/mock_browsing_data_cookie_helper.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_MOCK_BROWSING_DATA_COOKIE_HELPER_H_
 #define CHROME_BROWSER_MOCK_BROWSING_DATA_COOKIE_HELPER_H_
 #pragma once
 
 #include <map>
 #include <string>
 
 #include "chrome/browser/browsing_data_cookie_helper.h"
 
 // Mock for BrowsingDataCookieHelper.
 class MockBrowsingDataCookieHelper : public BrowsingDataCookieHelper {
  public:
   explicit MockBrowsingDataCookieHelper(Profile* profile);
 
   // BrowsingDataCookieHelper methods.
   virtual void StartFetching(
-      const net::CookieMonster::GetCookieListCallback &callback);
-  virtual void CancelNotification();
-  virtual void DeleteCookie(const net::CookieMonster::CanonicalCookie& cookie);
+      const net::CookieMonster::GetCookieListCallback &callback) OVERRIDE;
+  virtual void CancelNotification() OVERRIDE;
+  virtual void DeleteCookie(
+      const net::CookieMonster::CanonicalCookie& cookie) OVERRIDE;
 
   // Adds some cookie samples.
   void AddCookieSamples(const GURL& url, const std::string& cookie_line);
 
   // Notifies the callback.
   void Notify();
 
   // Marks all cookies as existing.
   void Reset();
 
   // Returns true if all cookies since the last Reset() invocation were
   // deleted.
   bool AllDeleted();
 
  private:
   virtual ~MockBrowsingDataCookieHelper();
 
   Profile* profile_;
   net::CookieMonster::GetCookieListCallback callback_;
 
   net::CookieList cookie_list_;
 
   // Stores which cookies exist.
   std::map<const std::string, bool> cookies_;
 };
 
 #endif  // CHROME_BROWSER_MOCK_BROWSING_DATA_COOKIE_HELPER_H_