Standardize usage of virtual/override/final in remoting/

remoting/protocol/connection_to_host.h

Index: remoting/protocol/connection_to_host.h
diff --git a/remoting/protocol/connection_to_host.h b/remoting/protocol/connection_to_host.h
index fb7a34d038edc0a39b7f638f72f85cf57f5c1eec..b1c32710c5d22897f6b73f58b52ec81a1d064bd9 100644
--- a/remoting/protocol/connection_to_host.h
+++ b/remoting/protocol/connection_to_host.h
@@ -82,7 +82,7 @@ class ConnectionToHost : public SignalStrategy::Listener,
   };
 
   ConnectionToHost();
-  virtual ~ConnectionToHost();
+  ~ConnectionToHost() override;
 
   // Allows to set a custom protocol configuration (e.g. for tests). Cannot be
   // called after Connect().
@@ -120,21 +120,19 @@ class ConnectionToHost : public SignalStrategy::Listener,
   virtual InputStub* input_stub();
 
   // SignalStrategy::StatusObserver interface.
-  virtual void OnSignalStrategyStateChange(
-      SignalStrategy::State state) override;
-  virtual bool OnSignalStrategyIncomingStanza(
-      const buzz::XmlElement* stanza) override;
+  void OnSignalStrategyStateChange(SignalStrategy::State state) override;
+  bool OnSignalStrategyIncomingStanza(const buzz::XmlElement* stanza) override;
 
   // SessionManager::Listener interface.
-  virtual void OnSessionManagerReady() override;
-  virtual void OnIncomingSession(
+  void OnSessionManagerReady() override;
+  void OnIncomingSession(
       Session* session,
       SessionManager::IncomingSessionResponse* response) override;
 
   // Session::EventHandler interface.
-  virtual void OnSessionStateChange(Session::State state) override;
-  virtual void OnSessionRouteChange(const std::string& channel_name,
-                                    const TransportRoute& route) override;
+  void OnSessionStateChange(Session::State state) override;
+  void OnSessionRouteChange(const std::string& channel_name,
+                            const TransportRoute& route) override;
 
   // MonitoredVideoStub::EventHandler interface.
   virtual void OnVideoChannelStatus(bool active);