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

base/power_monitor/power_monitor_device_source.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 BASE_POWER_MONITOR_POWER_MONITOR_DEVICE_SOURCE_H_
 #define BASE_POWER_MONITOR_POWER_MONITOR_DEVICE_SOURCE_H_
 
 #include "base/base_export.h"
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
@@ skipping 62 matching lines @@
 #endif  // OS_WIN
 
 #if defined(OS_MACOSX)
   void PlatformInit();
   void PlatformDestroy();
 #endif
 
   // Platform-specific method to check whether the system is currently
   // running on battery power.  Returns true if running on batteries,
   // false otherwise.
-  virtual bool IsOnBatteryPowerImpl() OVERRIDE;
+  bool IsOnBatteryPowerImpl() override;
 
   // Checks the battery status and notifies observers if the battery
   // status has changed.
   void BatteryCheck();
 
 #if defined(OS_IOS)
   // Holds pointers to system event notification observers.
   std::vector<id> notification_observers_;
 #endif
 
 #if defined(ENABLE_BATTERY_MONITORING)
   base::OneShotTimer<PowerMonitorDeviceSource> delayed_battery_check_;
 #endif
 
 #if defined(OS_WIN)
   PowerMessageWindow power_message_window_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(PowerMonitorDeviceSource);
 };
 
 }  // namespace base
 
 #endif  // BASE_POWER_MONITOR_POWER_MONITOR_DEVICE_SOURCE_H_