Update {virtual,override} to follow C++11 style in remoting.

remoting/host/win/session_desktop_environment.h

Index: remoting/host/win/session_desktop_environment.h
diff --git a/remoting/host/win/session_desktop_environment.h b/remoting/host/win/session_desktop_environment.h
index 949fa5eb0adf2c7f288a69117f49b13dc389fbff..233938f2bc250cf33e00432f3a6de2131fafa5d4 100644
--- a/remoting/host/win/session_desktop_environment.h
+++ b/remoting/host/win/session_desktop_environment.h
@@ -17,10 +17,10 @@ namespace remoting {
 // with Windows sessions.
 class SessionDesktopEnvironment : public Me2MeDesktopEnvironment {
  public:
-  virtual ~SessionDesktopEnvironment();
+  ~SessionDesktopEnvironment() override;
 
   // DesktopEnvironment implementation.
-  virtual scoped_ptr<InputInjector> CreateInputInjector() override;
+  scoped_ptr<InputInjector> CreateInputInjector() override;
 
  private:
   friend class SessionDesktopEnvironmentFactory;
@@ -44,10 +44,10 @@ class SessionDesktopEnvironmentFactory : public Me2MeDesktopEnvironmentFactory {
       scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
       const base::Closure& inject_sas);
-  virtual ~SessionDesktopEnvironmentFactory();
+  ~SessionDesktopEnvironmentFactory() override;
 
   // DesktopEnvironmentFactory implementation.
-  virtual scoped_ptr<DesktopEnvironment> Create(
+  scoped_ptr<DesktopEnvironment> Create(
       base::WeakPtr<ClientSessionControl> client_session_control) override;
 
  private: