Standardize usage of virtual/override/final in chrome/browser/signin/

chrome/browser/signin/easy_unlock_toggle_flow.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 CHROME_BROWSER_SIGNIN_EASY_UNLOCK_TOGGLE_FLOW_H_
 #define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_TOGGLE_FLOW_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "google_apis/gaia/oauth2_mint_token_flow.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 
 class Profile;
 
 class EasyUnlockToggleFlow : public OAuth2TokenService::Consumer,
                              public OAuth2MintTokenFlow::Delegate {
  public:
   // Callback to indicate whether the call succeeds or not.
   typedef base::Callback<void(bool)> ToggleFlowCallback;
 
   EasyUnlockToggleFlow(Profile* profile,
                        const std::string& phone_public_key,
                        bool toggle_enable,
                        const ToggleFlowCallback& callback);
-  virtual ~EasyUnlockToggleFlow();
+  ~EasyUnlockToggleFlow() override;
 
   void Start();
 
   // OAuth2TokenService::Consumer
-  virtual void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
-                                 const std::string& access_token,
-                                 const base::Time& expiration_time) override;
-  virtual void OnGetTokenFailure(const OAuth2TokenService::Request* request,
-                                 const GoogleServiceAuthError& error) override;
+  void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
+                         const std::string& access_token,
+                         const base::Time& expiration_time) override;
+  void OnGetTokenFailure(const OAuth2TokenService::Request* request,
+                         const GoogleServiceAuthError& error) override;
 
   // OAuth2MintTokenFlow::Delegate
-  virtual void OnMintTokenSuccess(const std::string& access_token,
-                                  int time_to_live) override;
-  virtual void OnMintTokenFailure(
-      const GoogleServiceAuthError& error) override;
-  virtual void OnIssueAdviceSuccess(
-      const IssueAdviceInfo& issue_advice) override;
+  void OnMintTokenSuccess(const std::string& access_token,
+                          int time_to_live) override;
+  void OnMintTokenFailure(const GoogleServiceAuthError& error) override;
+  void OnIssueAdviceSuccess(const IssueAdviceInfo& issue_advice) override;
 
  private:
   // Derived OAuth2ApiCallFlow class to make toggle api call after access token
   // is available.
   class ToggleApiCall;
 
   // Callbacks from ToggleApiCall
   void ReportToggleApiCallResult(bool success);
 
   Profile* profile_;
   const std::string phone_public_key_;
   const bool toggle_enable_;
   ToggleFlowCallback callback_;
 
   scoped_ptr<OAuth2TokenService::Request> token_request_;
   scoped_ptr<OAuth2MintTokenFlow> mint_token_flow_;
   scoped_ptr<ToggleApiCall> toggle_api_call_;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockToggleFlow);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_TOGGLE_FLOW_H_