Standardize usage of virtual/override/final in components/

components/proximity_auth/client.h

Index: components/proximity_auth/client.h
diff --git a/components/proximity_auth/client.h b/components/proximity_auth/client.h
index cea47ee8006cf6efa80c2f56db22d55d8ce80e97..5cd5107a1a55c5af8adc7980a5980282939cb8b3 100644
--- a/components/proximity_auth/client.h
+++ b/components/proximity_auth/client.h
@@ -91,15 +91,14 @@ class Client : public ConnectionObserver {
   void HandleUnlockResponseMessage(const base::DictionaryValue& message);
 
   // ConnectionObserver:
-  virtual void OnConnectionStatusChanged(
-      const Connection& connection,
-      Connection::Status old_status,
-      Connection::Status new_status) override;
-  virtual void OnMessageReceived(const Connection& connection,
-                                 const WireMessage& wire_message) override;
-  virtual void OnSendCompleted(const Connection& connection,
-                               const WireMessage& wire_message,
-                               bool success) override;
+  void OnConnectionStatusChanged(const Connection& connection,
+                                 Connection::Status old_status,
+                                 Connection::Status new_status) override;
+  void OnMessageReceived(const Connection& connection,
+                         const WireMessage& wire_message) override;
+  void OnSendCompleted(const Connection& connection,
+                       const WireMessage& wire_message,
+                       bool success) override;
 
   // The connection used to send and receive events and status updates.
   scoped_ptr<Connection> connection_;