Standardize usage of virtual/override/final in components/

components/invalidation/mock_ack_handler.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_MOCK_ACK_HANDLER_H_
 #define COMPONENTS_INVALIDATION_MOCK_ACK_HANDLER_H_
 
 #include <map>
 #include <vector>
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "components/invalidation/ack_handler.h"
 #include "components/invalidation/invalidation_export.h"
 #include "components/invalidation/invalidation_util.h"
 
 namespace syncer {
 
 class Invalidation;
 
 // This AckHandler implementation colaborates with the FakeInvalidationService
 // to enable unit tests to assert that invalidations are being acked properly.
 class INVALIDATION_EXPORT MockAckHandler
   : public AckHandler,
     public base::SupportsWeakPtr<MockAckHandler> {
  public:
   MockAckHandler();
-  virtual ~MockAckHandler();
+  ~MockAckHandler() override;
 
   // Sets up some internal state to track this invalidation, and modifies it so
   // that its Acknowledge() and Drop() methods will route back to us.
   void RegisterInvalidation(Invalidation* invalidation);
 
   // No one was listening for this invalidation, so no one will receive it or
   // ack it.  We keep track of it anyway to let tests make assertions about it.
   void RegisterUnsentInvalidation(Invalidation* invalidation);
 
   // Returns true if the specified invalidaition has been delivered, but has not
   // been acknowledged yet.
   bool IsUnacked(const Invalidation& invalidation) const;
 
   // Returns true if the specified invalidation has been delivered and
   // acknowledged.
   bool IsAcknowledged(const Invalidation& invalidation) const;
 
   // Returns true if the specified invalidation has been delivered and
   // dropped.
   bool IsDropped(const Invalidation& invalidation) const;
 
   // Returns true if the specified invalidation was never delivered.
   bool IsUnsent(const Invalidation& invalidation) const;
 
   // Retruns true if all invalidations have been acked and all drops recovered.
   bool AllInvalidationsAccountedFor() const;
 
   // Implementation of AckHandler.
-  virtual void Acknowledge(
-      const invalidation::ObjectId& id,
-      const AckHandle& handle) override;
-  virtual void Drop(
-      const invalidation::ObjectId& id,
-      const AckHandle& handle) override;
+  void Acknowledge(const invalidation::ObjectId& id,
+                   const AckHandle& handle) override;
+  void Drop(const invalidation::ObjectId& id, const AckHandle& handle) override;
 
  private:
   typedef std::vector<syncer::Invalidation> InvalidationVector;
   typedef std::map<invalidation::ObjectId,
                    AckHandle,
                    ObjectIdLessThan> IdHandleMap;
 
   InvalidationVector unsent_invalidations_;
   InvalidationVector unacked_invalidations_;
   InvalidationVector acked_invalidations_;
   InvalidationVector dropped_invalidations_;
 
   IdHandleMap unrecovered_drop_events_;
 };
 
 }  // namespace syncer
 
 #endif  // COMPONENTS_INVALIDATION_MOCK_ACK_HANDLER_H_