Move device notification impl out of chrome/browser/media_gallery

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_
-
-#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 MediaDeviceNotificationsWindowWin
-    : public base::RefCountedThreadSafe<MediaDeviceNotificationsWindowWin> {
- public:
-  MediaDeviceNotificationsWindowWin();
-  // Only for use in unit tests.
-  explicit MediaDeviceNotificationsWindowWin(VolumeNameFunc volumeNameFunc);
-
-  LRESULT OnDeviceChange(UINT event_type, DWORD data);
-
- private:
-  friend class base::RefCountedThreadSafe<MediaDeviceNotificationsWindowWin>;
-
-  virtual ~MediaDeviceNotificationsWindowWin();
-
-  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);
-
-  void CheckDeviceTypeOnFileThread(const std::string& id,
-                                   const FilePath::StringType& device_name,
-                                   const FilePath& path);
-
-  void ProcessMediaDeviceAttachedOnUIThread(
-      const std::string& id,
-      const FilePath::StringType& device_name,
-      const FilePath& path);
-
-  // 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_