Standardize usage of virtual/override/final specifiers.

components/ownership/owner_key_util_impl.h

 // Copyright 2014 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 COMPONENTS_OWNERSHIP_OWNER_KEY_UTIL_IMPL_H_
 #define COMPONENTS_OWNERSHIP_OWNER_KEY_UTIL_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "components/ownership/owner_key_util.h"
 #include "components/ownership/ownership_export.h"
 
 namespace ownership {
 
 // Implementation of OwnerKeyUtil which imports public part of the
 // owner key from a filesystem.
 class OWNERSHIP_EXPORT OwnerKeyUtilImpl : public OwnerKeyUtil {
  public:
   explicit OwnerKeyUtilImpl(const base::FilePath& public_key_file);
 
   // OwnerKeyUtil implementation:
   bool ImportPublicKey(std::vector<uint8>* output) override;
 #if defined(USE_NSS)
-  virtual crypto::RSAPrivateKey* FindPrivateKeyInSlot(
-      const std::vector<uint8>& key,
-      PK11SlotInfo* slot) override;
+  crypto::RSAPrivateKey* FindPrivateKeyInSlot(const std::vector<uint8>& key,
+                                              PK11SlotInfo* slot) override;
 #endif  // defined(USE_NSS)
   bool IsPublicKeyPresent() override;
 
  private:
   ~OwnerKeyUtilImpl() override;
 
   // The file that holds the public key.
   base::FilePath public_key_file_;
 
   DISALLOW_COPY_AND_ASSIGN(OwnerKeyUtilImpl);
 };
 
 }  // namespace ownership
 
 #endif  // COMPONENTS_OWNERSHIP_OWNER_KEY_UTIL_IMPL_H_