Standardize usage of virtual/override/final in remoting/

remoting/protocol/libjingle_transport_factory.h

Index: remoting/protocol/libjingle_transport_factory.h
diff --git a/remoting/protocol/libjingle_transport_factory.h b/remoting/protocol/libjingle_transport_factory.h
index eda5b726134526f4ad670b4b3836fe8195386da7..f6af3012c709589ce27e47bbc242556a2743988c 100644
--- a/remoting/protocol/libjingle_transport_factory.h
+++ b/remoting/protocol/libjingle_transport_factory.h
@@ -43,11 +43,11 @@ class LibjingleTransportFactory : public TransportFactory {
       scoped_ptr<cricket::HttpPortAllocatorBase> port_allocator,
       const NetworkSettings& network_settings);
 
-  virtual ~LibjingleTransportFactory();
+  ~LibjingleTransportFactory() override;
 
   // TransportFactory interface.
-  virtual void PrepareTokens() override;
-  virtual scoped_ptr<Transport> CreateTransport() override;
+  void PrepareTokens() override;
+  scoped_ptr<Transport> CreateTransport() override;
 
  private:
   void EnsureFreshJingleInfo();