Standardize usage of virtual/override/final in remoting/

remoting/host/it2me/it2me_host.h

 // Copyright 2013 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 REMOTING_HOST_IT2ME_IT2ME_HOST_H_
 #define REMOTING_HOST_IT2ME_IT2ME_HOST_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 62 matching lines @@
 
   // Disconnects the host, ready for tear-down.
   // Also called internally, from the network thread.
   virtual void Disconnect();
 
   // TODO (weitaosu): Remove RequestNatPolicy from It2MeHost.
   // Request a NAT policy notification.
   virtual void RequestNatPolicy();
 
   // remoting::HostStatusObserver implementation.
-  virtual void OnAccessDenied(const std::string& jid) override;
-  virtual void OnClientAuthenticated(const std::string& jid) override;
-  virtual void OnClientDisconnected(const std::string& jid) override;
+  void OnAccessDenied(const std::string& jid) override;
+  void OnClientAuthenticated(const std::string& jid) override;
+  void OnClientDisconnected(const std::string& jid) override;
 
   void SetStateForTesting(It2MeHostState state) { SetState(state); }
 
  protected:
   friend class base::RefCountedThreadSafe<It2MeHost>;
 
-  virtual ~It2MeHost();
+  ~It2MeHost() override;
 
   ChromotingHostContext* host_context() { return host_context_; }
   scoped_refptr<base::SingleThreadTaskRunner> task_runner() {
     return task_runner_;
   }
   base::WeakPtr<It2MeHost::Observer> observer() { return observer_; }
 
  private:
   // Updates state of the host. Can be called only on the network thread.
   void SetState(It2MeHostState state);
@@ skipping 85 matching lines @@
       const XmppSignalStrategy::XmppServerConfig& xmpp_server_config,
       const std::string& directory_bot_jid);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(It2MeHostFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_IT2ME_IT2ME_HOST_H_