Add OVERRIDE to chrome/common/ and nacl/.

chrome/common/net/gaia/gaia_auth_fetcher_unittest.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.
 //
 // A collection of classes that are useful when testing things that use a
 // GaiaAuthFetcher.
 
 #ifndef CHROME_COMMON_NET_GAIA_GAIA_AUTH_FETCHER_UNITTEST_H_
 #define CHROME_COMMON_NET_GAIA_GAIA_AUTH_FETCHER_UNITTEST_H_
 #pragma once
@@ skipping 17 matching lines @@
   MockFetcher(const GURL& url,
               const net::URLRequestStatus& status,
               int response_code,
               const net::ResponseCookies& cookies,
               const std::string& results,
               content::URLFetcher::RequestType request_type,
               content::URLFetcherDelegate* d);
 
   virtual ~MockFetcher();
 
-  virtual void Start();
+  virtual void Start() OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockFetcher);
 };
 
 template<typename T>
 class MockFactory : public content::URLFetcherFactory,
                     public ScopedURLFetcherFactory {
  public:
   MockFactory()
@@ skipping 14 matching lines @@
   void set_results(const std::string& results) {
     results_ = results;
   }
  private:
   bool success_;
   std::string results_;
   DISALLOW_COPY_AND_ASSIGN(MockFactory);
 };
 
 #endif  // CHROME_COMMON_NET_GAIA_GAIA_AUTH_FETCHER_UNITTEST_H_