Share MediaStorageUtil common code among platforms.

chrome/browser/system_monitor/removable_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_SYSTEM_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_WINDOW_WIN_H_
 #define CHROME_BROWSER_SYSTEM_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_WINDOW_WIN_H_
 
 #include <windows.h>
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
 
 typedef LRESULT (*VolumeNameFunc)(LPCWSTR drive,
                                   LPWSTR volume_name,
                                   unsigned int volume_name_len);
 namespace chrome {
 
+class RemovableDeviceNotificationsWin;
+typedef RemovableDeviceNotificationsWin RemovableDeviceNotifications;
+
 class RemovableDeviceNotificationsWindowWin
     : public base::RefCountedThreadSafe<RemovableDeviceNotificationsWindowWin> {
  public:
   RemovableDeviceNotificationsWindowWin();
   // Only for use in unit tests.
   explicit RemovableDeviceNotificationsWindowWin(VolumeNameFunc volumeNameFunc);
 
   LRESULT OnDeviceChange(UINT event_type, DWORD data);
 
  private:
@@ skipping 31 matching lines @@
 
   HWND window_;
   VolumeNameFunc volume_name_func_;
 
   DISALLOW_COPY_AND_ASSIGN(RemovableDeviceNotificationsWindowWin);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_SYSTEM_MONITOR_REMOVABLE_DEVICE_NOTIFICATIONS_WINDOW_WIN_H_