Standardize usage of virtual/override/final specifiers in components/.

components/proximity_auth/cryptauth/cryptauth_account_token_fetcher.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_PROXIMITY_AUTH_CRYPT_AUTH_ACCOUNT_TOKEN_FETCHER_IMPL_H
 #define COMPONENTS_PROXIMITY_AUTH_CRYPT_AUTH_ACCOUNT_TOKEN_FETCHER_IMPL_H
 
 #include "base/callback.h"
 #include "components/proximity_auth/cryptauth/cryptauth_access_token_fetcher.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 
 namespace proximity_auth {
 
 // Implementation of CryptAuthAccessTokenFetcher fetching an access token for a
 // given account using the provided OAuth2TokenService.
 class CryptAuthAccountTokenFetcher : public CryptAuthAccessTokenFetcher,
                                      public OAuth2TokenService::Consumer {
  public:
   // |token_service| is not owned, and must outlive this object.
   CryptAuthAccountTokenFetcher(OAuth2TokenService* token_service,
                                const std::string& account_id);
-  virtual ~CryptAuthAccountTokenFetcher();
+  ~CryptAuthAccountTokenFetcher() override;
 
   // CryptAuthAccessTokenFetcher:
   void FetchAccessToken(const AccessTokenCallback& callback) override;
 
  private:
   // OAuth2TokenService::Consumer:
   void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
                          const std::string& access_token,
                          const base::Time& expiration_time) override;
   void OnGetTokenFailure(const OAuth2TokenService::Request* request,
@@ skipping 14 matching lines @@
 
   // Callback to invoke when the token fetch succeeds or fails.
   AccessTokenCallback callback_;
 
   DISALLOW_COPY_AND_ASSIGN(CryptAuthAccountTokenFetcher);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_CRYPT_AUTH_ACCESS_TOKEN_FETCHER_IMPL_H