Standardize usage of virtual/override/final in components/

components/invalidation/fake_invalidator.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_INVALIDATION_FAKE_INVALIDATOR_H_
 #define COMPONENTS_INVALIDATION_FAKE_INVALIDATOR_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "components/invalidation/invalidation_util.h"
 #include "components/invalidation/invalidator.h"
 #include "components/invalidation/invalidator_registrar.h"
 
 namespace syncer {
 
 class FakeInvalidator : public Invalidator {
  public:
   FakeInvalidator();
-  virtual ~FakeInvalidator();
+  ~FakeInvalidator() override;
 
   bool IsHandlerRegistered(InvalidationHandler* handler) const;
   ObjectIdSet GetRegisteredIds(InvalidationHandler* handler) const;
   const std::string& GetUniqueId() const;
   const std::string& GetCredentialsEmail() const;
   const std::string& GetCredentialsToken() const;
 
   void EmitOnInvalidatorStateChange(InvalidatorState state);
   void EmitOnIncomingInvalidation(
       const ObjectIdInvalidationMap& invalidation_map);
 
-  virtual void RegisterHandler(InvalidationHandler* handler) override;
-  virtual void UpdateRegisteredIds(InvalidationHandler* handler,
-                                   const ObjectIdSet& ids) override;
-  virtual void UnregisterHandler(InvalidationHandler* handler) override;
-  virtual InvalidatorState GetInvalidatorState() const override;
-  virtual void UpdateCredentials(
-      const std::string& email, const std::string& token) override;
-  virtual void RequestDetailedStatus(
-    base::Callback<void(const base::DictionaryValue&)> callback) const
-    override;
+  void RegisterHandler(InvalidationHandler* handler) override;
+  void UpdateRegisteredIds(InvalidationHandler* handler,
+                           const ObjectIdSet& ids) override;
+  void UnregisterHandler(InvalidationHandler* handler) override;
+  InvalidatorState GetInvalidatorState() const override;
+  void UpdateCredentials(const std::string& email,
+                         const std::string& token) override;
+  void RequestDetailedStatus(base::Callback<void(const base::DictionaryValue&)>
+                                 callback) const override;
 
  private:
   InvalidatorRegistrar registrar_;
   std::string state_;
   std::string email_;
   std::string token_;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_INVALIDATION_FAKE_INVALIDATOR_H_