Cleanup: Misc fixes to MediaDeviceNotifications.

chrome/browser/media_gallery/media_device_notifications_window_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 CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_WINDOW_WIN_H_
 #define CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_WINDOW_WIN_H_
 #pragma once
 
 #include <windows.h>
 
 #include "base/basictypes.h"
 
 typedef LRESULT (*VolumeNameFunc)(LPCWSTR drive,
                                   LPWSTR volume_name,
                                   unsigned int volume_name_len);
 namespace chrome {
 
 class MediaDeviceNotificationsWindowWin {
  public:
   MediaDeviceNotificationsWindowWin();
   // Only for use in unit tests.
   explicit MediaDeviceNotificationsWindowWin(VolumeNameFunc volumeNameFunc);
 
-  virtual ~MediaDeviceNotificationsWindowWin();
+  ~MediaDeviceNotificationsWindowWin();
 
-  virtual LRESULT OnDeviceChange(UINT event_type, DWORD data);
+  LRESULT OnDeviceChange(UINT event_type, DWORD data);
 
  private:
   void Init();
 
   LRESULT CALLBACK WndProc(HWND hwnd,
                            UINT message,
                            WPARAM wparam,
                            LPARAM lparam);
 
   static LRESULT CALLBACK WndProcThunk(HWND hwnd,
                                        UINT message,
                                        WPARAM wparam,
                                        LPARAM lparam);
 
   // The window class of |window_|.
   ATOM atom_;
 
   // The handle of the module that contains the window procedure of |window_|.
   HMODULE instance_;
 
   HWND window_;
   VolumeNameFunc volume_name_func_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaDeviceNotificationsWindowWin);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_WINDOW_WIN_H_