replace 'virtual ... OVERRIDE' with '... override'

base/prefs/value_map_pref_store.h

 // Copyright (c) 2012 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 BASE_PREFS_VALUE_MAP_PREF_STORE_H_
 #define BASE_PREFS_VALUE_MAP_PREF_STORE_H_
 
 #include <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/observer_list.h"
 #include "base/prefs/base_prefs_export.h"
 #include "base/prefs/pref_value_map.h"
 #include "base/prefs/writeable_pref_store.h"
 
 // A basic PrefStore implementation that uses a simple name-value map for
 // storing the preference values.
 class BASE_PREFS_EXPORT ValueMapPrefStore : public WriteablePrefStore {
  public:
   ValueMapPrefStore();
 
   // PrefStore overrides:
-  virtual bool GetValue(const std::string& key,
-                        const base::Value** value) const OVERRIDE;
-  virtual void AddObserver(PrefStore::Observer* observer) OVERRIDE;
-  virtual void RemoveObserver(PrefStore::Observer* observer) OVERRIDE;
-  virtual bool HasObservers() const OVERRIDE;
+  bool GetValue(const std::string& key,
+                const base::Value** value) const override;
+  void AddObserver(PrefStore::Observer* observer) override;
+  void RemoveObserver(PrefStore::Observer* observer) override;
+  bool HasObservers() const override;
 
   // WriteablePrefStore overrides:
-  virtual void SetValue(const std::string& key, base::Value* value) OVERRIDE;
-  virtual void RemoveValue(const std::string& key) OVERRIDE;
-  virtual bool GetMutableValue(const std::string& key,
-                               base::Value** value) OVERRIDE;
-  virtual void ReportValueChanged(const std::string& key) OVERRIDE;
-  virtual void SetValueSilently(const std::string& key,
-                                base::Value* value) OVERRIDE;
+  void SetValue(const std::string& key, base::Value* value) override;
+  void RemoveValue(const std::string& key) override;
+  bool GetMutableValue(const std::string& key, base::Value** value) override;
+  void ReportValueChanged(const std::string& key) override;
+  void SetValueSilently(const std::string& key, base::Value* value) override;
 
  protected:
   virtual ~ValueMapPrefStore();
 
   // Notify observers about the initialization completed event.
   void NotifyInitializationCompleted();
 
  private:
   PrefValueMap prefs_;
 
   ObserverList<PrefStore::Observer, true> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ValueMapPrefStore);
 };
 
 #endif  // BASE_PREFS_VALUE_MAP_PREF_STORE_H_