Standardize usage of virtual/override/final in content/browser/

content/browser/service_worker/service_worker_storage.h

 // Copyright 2013 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_STORAGE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_STORAGE_H_
 
 #include <deque>
 #include <map>
 #include <set>
@@ skipping 40 matching lines @@
   typedef base::Callback<void(ServiceWorkerStatusCode status,
                               const scoped_refptr<ServiceWorkerRegistration>&
                                   registration)> FindRegistrationCallback;
   typedef base::Callback<
       void(const std::vector<ServiceWorkerRegistrationInfo>& registrations)>
           GetAllRegistrationInfosCallback;
   typedef base::Callback<
       void(ServiceWorkerStatusCode status, bool are_equal)>
           CompareCallback;
 
-  virtual ~ServiceWorkerStorage();
+  ~ServiceWorkerStorage() override;
 
   static scoped_ptr<ServiceWorkerStorage> Create(
       const base::FilePath& path,
       base::WeakPtr<ServiceWorkerContextCore> context,
       scoped_ptr<ServiceWorkerDatabaseTaskManager> database_task_manager,
       const scoped_refptr<base::SingleThreadTaskRunner>& disk_cache_thread,
       storage::QuotaManagerProxy* quota_manager_proxy,
       storage::SpecialStoragePolicy* special_storage_policy);
 
   // Used for DeleteAndStartOver. Creates new storage based on |old_storage|.
@@ skipping 327 matching lines @@
   std::set<int64> pending_deletions_;
 
   base::WeakPtrFactory<ServiceWorkerStorage> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerStorage);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_STORAGE_H_