Add OVERRIDE to chrome/common/ and nacl/.

chrome/common/net/gaia/gaia_auth_fetcher.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_COMMON_NET_GAIA_GAIA_AUTH_FETCHER_H_
 #define CHROME_COMMON_NET_GAIA_GAIA_AUTH_FETCHER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 64 matching lines @@
 
   // Start a TokenAuth request to pre-login the user with the given credentials.
   void StartTokenAuth(const std::string& auth_token);
 
   // Start a MergeSession request to pre-login the user with the given
   // credentials.  Unlike TokenAuth above, MergeSession will not sign out any
   // existing accounts.
   void StartMergeSession(const std::string& auth_token);
 
   // Implementation of content::URLFetcherDelegate
-  virtual void OnURLFetchComplete(const content::URLFetcher* source);
+  virtual void OnURLFetchComplete(const content::URLFetcher* source) OVERRIDE;
 
   // StartClientLogin been called && results not back yet?
   bool HasPendingFetch();
 
   // Stop any URL fetches in progress.
   void CancelRequest();
 
   // From a URLFetcher result, generate an appropriate error.
   // From the API documentation, both IssueAuthToken and ClientLogin have
   // the same error returns.
@@ skipping 140 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, IncomprehensibleError);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, ServiceUnavailableError);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, CheckNormalErrorCode);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, CheckTwoFactorResponse);
   FRIEND_TEST_ALL_PREFIXES(GaiaAuthFetcherTest, LoginNetFailure);
 
   DISALLOW_COPY_AND_ASSIGN(GaiaAuthFetcher);
 };
 
 #endif  // CHROME_COMMON_NET_GAIA_GAIA_AUTH_FETCHER_H_