Standardize usage of virtual/override/final in ui/

ui/app_list/search/dictionary_data_store.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 UI_APP_LIST_SEARCH_DICTIONARY_DATA_STORE_H_
 #define UI_APP_LIST_SEARCH_DICTIONARY_DATA_STORE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 36 matching lines @@
   // Schedule a job to persist the cached dictionary.
   void ScheduleWrite();
 
   // Used to get a pointer to the cached dictionary. Changes to this dictionary
   // will not be persisted unless ScheduleWrite() is called.
   base::DictionaryValue* cached_dict() { return cached_dict_.get(); }
 
  private:
   friend class base::RefCountedThreadSafe<DictionaryDataStore>;
 
-  virtual ~DictionaryDataStore();
+  ~DictionaryDataStore() override;
 
   // Reads data from backing file.
   scoped_ptr<base::DictionaryValue> LoadOnBlockingPool();
 
   // ImportantFileWriter::DataSerializer overrides:
-  virtual bool SerializeData(std::string* data) override;
+  bool SerializeData(std::string* data) override;
 
   base::FilePath data_file_;
   scoped_refptr<base::SequencedTaskRunner> file_task_runner_;
   scoped_ptr<base::ImportantFileWriter> writer_;
 
   // Cached JSON dictionary to serve read and incremental change calls.
   scoped_ptr<base::DictionaryValue> cached_dict_;
 
   base::SequencedWorkerPool* worker_pool_;
 
   DISALLOW_COPY_AND_ASSIGN(DictionaryDataStore);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_SEARCH_DICTIONARY_DATA_STORE_H_