replace OVERRIDE and FINAL with override and final in ash/

ash/system/chromeos/network/tray_network_state_observer.h

Index: ash/system/chromeos/network/tray_network_state_observer.h
diff --git a/ash/system/chromeos/network/tray_network_state_observer.h b/ash/system/chromeos/network/tray_network_state_observer.h
index 12a60e3175f92f44ccc305fb59afc1787d351aa5..f062a6b0ee36be356de03f26c173423cd2434e4f 100644
--- a/ash/system/chromeos/network/tray_network_state_observer.h
+++ b/ash/system/chromeos/network/tray_network_state_observer.h
@@ -33,14 +33,14 @@ class TrayNetworkStateObserver : public chromeos::NetworkStateHandlerObserver {
   virtual ~TrayNetworkStateObserver();
 
   // NetworkStateHandlerObserver overrides.
-  virtual void NetworkListChanged() OVERRIDE;
-  virtual void DeviceListChanged() OVERRIDE;
+  virtual void NetworkListChanged() override;
+  virtual void DeviceListChanged() override;
   virtual void DefaultNetworkChanged(
-      const chromeos::NetworkState* network) OVERRIDE;
+      const chromeos::NetworkState* network) override;
   virtual void NetworkConnectionStateChanged(
-      const chromeos::NetworkState* network) OVERRIDE;
+      const chromeos::NetworkState* network) override;
   virtual void NetworkPropertiesUpdated(
-      const chromeos::NetworkState* network) OVERRIDE;
+      const chromeos::NetworkState* network) override;
 
  private:
   Delegate* delegate_;