Standardize usage of virtual/override/final in extensions/

extensions/browser/api/bluetooth/bluetooth_api_pairing_delegate.h

Index: extensions/browser/api/bluetooth/bluetooth_api_pairing_delegate.h
diff --git a/extensions/browser/api/bluetooth/bluetooth_api_pairing_delegate.h b/extensions/browser/api/bluetooth/bluetooth_api_pairing_delegate.h
index b3dc301828b0a5575b44a8784be6aae15f93cf19..bfcbc81948127855cb558ca581e936c9b3eb181d 100644
--- a/extensions/browser/api/bluetooth/bluetooth_api_pairing_delegate.h
+++ b/extensions/browser/api/bluetooth/bluetooth_api_pairing_delegate.h
@@ -23,20 +23,17 @@ class BluetoothApiPairingDelegate
  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.