replace OVERRIDE and FINAL with override and final in chrome/browser/chromeos/

chrome/browser/chromeos/system_logs/lsb_release_log_source.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_CHROMEOS_SYSTEM_LOGS_LSB_RELEASE_LOG_SOURCE_H_
 #define CHROME_BROWSER_CHROMEOS_SYSTEM_LOGS_LSB_RELEASE_LOG_SOURCE_H_
 
 #include "chrome/browser/feedback/system_logs/system_logs_fetcher_base.h"
 
 namespace system_logs {
 
 // Fetches release information form /etc/lsb-release file.
 class LsbReleaseLogSource : public SystemLogsSource {
  public:
   LsbReleaseLogSource() {}
   virtual ~LsbReleaseLogSource() {}
 
   // SystemLogsSource override.
-  virtual void Fetch(const SysLogsSourceCallback& callback) OVERRIDE;
+  virtual void Fetch(const SysLogsSourceCallback& callback) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LsbReleaseLogSource);
 };
 
 }  // namespace system_logs
 
 #endif  // CHROME_BROWSER_CHROMEOS_SYSTEM_LOGS_LSB_RELEASE_LOG_SOURCE_H_