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

remoting/host/desktop_session_win.h

 // Copyright (c) 2012 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_DESKTOP_SESSION_WIN_H_
 #define REMOTING_HOST_DESKTOP_SESSION_WIN_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
@@ skipping 45 matching lines @@
  protected:
   // Passes the owning |daemon_process|, a unique identifier of the desktop
   // session |id| and the interface for monitoring session attach/detach events.
   // Both |daemon_process| and |monitor| must outlive |this|.
   DesktopSessionWin(
     scoped_refptr<AutoThreadTaskRunner> caller_task_runner,
     scoped_refptr<AutoThreadTaskRunner> io_task_runner,
     DaemonProcess* daemon_process,
     int id,
     WtsTerminalMonitor* monitor);
-  virtual ~DesktopSessionWin();
+  ~DesktopSessionWin() override;
 
   const scoped_refptr<AutoThreadTaskRunner>& caller_task_runner() const {
     return caller_task_runner_;
   }
 
   // Called when |session_attach_timer_| expires.
   void OnSessionAttachTimeout();
 
   // Starts monitoring for session attach/detach events for |terminal_id|.
   void StartMonitoring(const std::string& terminal_id);
 
   // Stops monitoring for session attach/detach events.
   void StopMonitoring();
 
   // Asks DaemonProcess to terminate this session.
   void TerminateSession();
 
   // Injects a secure attention sequence into the session.
   virtual void InjectSas() = 0;
 
   // WorkerProcessIpcDelegate implementation.
-  virtual void OnChannelConnected(int32 peer_pid) override;
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
-  virtual void OnPermanentError(int exit_code) override;
+  void OnChannelConnected(int32 peer_pid) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+  void OnPermanentError(int exit_code) override;
 
   // WtsTerminalObserver implementation.
-  virtual void OnSessionAttached(uint32 session_id) override;
-  virtual void OnSessionDetached() override;
+  void OnSessionAttached(uint32 session_id) override;
+  void OnSessionDetached() override;
 
  private:
   // ChromotingDesktopDaemonMsg_DesktopAttached handler.
   void OnDesktopSessionAgentAttached(IPC::PlatformFileForTransit desktop_pipe);
 
   // Requests the desktop process to crash.
   void CrashDesktopProcess(const tracked_objects::Location& location);
 
   // Reports time elapsed since previous event to the debug log.
   void ReportElapsedTime(const std::string& event);
@@ skipping 21 matching lines @@
   base::OneShotTimer<DesktopSessionWin> session_attach_timer_;
 
   base::Time last_timestamp_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopSessionWin);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_DESKTOP_SESSION_WIN_H_