Standardize usage of virtual/override/final in extensions/

extensions/browser/api/bluetooth/bluetooth_api_pairing_delegate.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_API_BLUETOOTH_BLUETOOTH_API_PAIRING_DELEGATE_H_
 #define EXTENSIONS_BROWSER_API_BLUETOOTH_BLUETOOTH_API_PAIRING_DELEGATE_H_
 
 #include <string>
 
 #include "device/bluetooth/bluetooth_device.h"
 #include "extensions/common/api/bluetooth_private.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 // A pairing delegate to dispatch incoming Bluetooth pairing events to the API
 // event router.
 class BluetoothApiPairingDelegate
     : public device::BluetoothDevice::PairingDelegate {
  public:
   BluetoothApiPairingDelegate(const std::string& extension_id,
                               content::BrowserContext* browser_context);
-  virtual ~BluetoothApiPairingDelegate();
+  ~BluetoothApiPairingDelegate() override;
 
   // device::PairingDelegate overrides:
-  virtual void RequestPinCode(device::BluetoothDevice* device) override;
-  virtual void RequestPasskey(device::BluetoothDevice* device) override;
-  virtual void DisplayPinCode(device::BluetoothDevice* device,
-                              const std::string& pincode) override;
-  virtual void DisplayPasskey(device::BluetoothDevice* device,
-                              uint32 passkey) override;
-  virtual void KeysEntered(device::BluetoothDevice* device,
-                           uint32 entered) override;
-  virtual void ConfirmPasskey(device::BluetoothDevice* device,
-                              uint32 passkey) override;
-  virtual void AuthorizePairing(device::BluetoothDevice* device) override;
+  void RequestPinCode(device::BluetoothDevice* device) override;
+  void RequestPasskey(device::BluetoothDevice* device) override;
+  void DisplayPinCode(device::BluetoothDevice* device,
+                      const std::string& pincode) override;
+  void DisplayPasskey(device::BluetoothDevice* device, uint32 passkey) override;
+  void KeysEntered(device::BluetoothDevice* device, uint32 entered) override;
+  void ConfirmPasskey(device::BluetoothDevice* device, uint32 passkey) override;
+  void AuthorizePairing(device::BluetoothDevice* device) override;
 
  private:
   // Dispatches a pairing event to the extension.
   void DispatchPairingEvent(
       const core_api::bluetooth_private::PairingEvent& pairing_event);
 
   std::string extension_id_;
   content::BrowserContext* browser_context_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_BLUETOOTH_BLUETOOTH_API_PAIRING_DELEGATE_H_