Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/options.

chrome/browser/chromeos/options/cert_library.h

 // Copyright 2013 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_OPTIONS_CERT_LIBRARY_H_
 #define CHROME_BROWSER_CHROMEOS_OPTIONS_CERT_LIBRARY_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
@@ skipping 61 matching lines @@
   // Returns the index of a Certificate matching |pem_encoded| or -1 if none
   // found. This function may be slow depending on the number of stored
   // certificates.
   // TOOD(pneubeck): Either make this more efficient, asynchronous or get rid of
   // it.
   int GetServerCACertIndexByPEM(const std::string& pem_encoded) const;
   // Same as above but for a PKCS#11 id.
   int GetUserCertIndexByPkcs11Id(const std::string& pkcs11_id) const;
 
   // CertLoader::Observer
-  virtual void OnCertificatesLoaded(const net::CertificateList&,
-                                    bool initial_load) override;
+  void OnCertificatesLoaded(const net::CertificateList&,
+                            bool initial_load) override;
 
  private:
   CertLibrary();
-  virtual ~CertLibrary();
+  ~CertLibrary() override;
 
   net::X509Certificate* GetCertificateAt(CertType type, int index) const;
   const net::CertificateList& GetCertificateListForType(CertType type) const;
 
   ObserverList<CertLibrary::Observer> observer_list_;
 
   // Sorted certificate lists
   net::CertificateList certs_;
   net::CertificateList user_certs_;
   net::CertificateList server_certs_;
   net::CertificateList server_ca_certs_;
 
   DISALLOW_COPY_AND_ASSIGN(CertLibrary);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_OPTIONS_CERT_LIBRARY_H_