Standardize usage of virtual/override/final in remoting/

remoting/host/setup/host_starter.h

Index: remoting/host/setup/host_starter.h
diff --git a/remoting/host/setup/host_starter.h b/remoting/host/setup/host_starter.h
index d990509b6534b56ca7ae8e9a20fd099e0ca75daa..5c032843d567dc0db994fd9e3f957a9be8cae0b4 100644
--- a/remoting/host/setup/host_starter.h
+++ b/remoting/host/setup/host_starter.h
@@ -34,7 +34,7 @@ class HostStarter : public gaia::GaiaOAuthClient::Delegate,
 
   typedef base::Callback<void(Result)> CompletionCallback;
 
-  virtual ~HostStarter();
+  ~HostStarter() override;
 
   // Creates a HostStarter.
   static scoped_ptr<HostStarter> Create(
@@ -52,23 +52,23 @@ class HostStarter : public gaia::GaiaOAuthClient::Delegate,
                  CompletionCallback on_done);
 
   // gaia::GaiaOAuthClient::Delegate
-  virtual void OnGetTokensResponse(const std::string& refresh_token,
-                                   const std::string& access_token,
-                                   int expires_in_seconds) override;
-  virtual void OnRefreshTokenResponse(const std::string& access_token,
-                                      int expires_in_seconds) override;
-  virtual void OnGetUserEmailResponse(const std::string& user_email) override;
+  void OnGetTokensResponse(const std::string& refresh_token,
+                           const std::string& access_token,
+                           int expires_in_seconds) override;
+  void OnRefreshTokenResponse(const std::string& access_token,
+                              int expires_in_seconds) override;
+  void OnGetUserEmailResponse(const std::string& user_email) override;
 
   // remoting::ServiceClient::Delegate
-  virtual void OnHostRegistered(const std::string& authorization_code) override;
-  virtual void OnHostUnregistered() override;
+  void OnHostRegistered(const std::string& authorization_code) override;
+  void OnHostUnregistered() override;
 
   // TODO(sergeyu): Following methods are members of all three delegate
   // interfaces implemented in this class. Fix ServiceClient and
   // GaiaUserEmailFetcher so that Delegate interfaces do not overlap (ideally
   // they should be changed to use Callback<>).
-  virtual void OnOAuthError() override;
-  virtual void OnNetworkError(int response_code) override;
+  void OnOAuthError() override;
+  void OnNetworkError(int response_code) override;
 
  private:
   HostStarter(scoped_ptr<gaia::GaiaOAuthClient> oauth_client,