Moves media device notification code to chrome/browser

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();
+
+  virtual 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);
+
+  HWND window_;
+  VolumeNameFunc volume_name_func_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaDeviceNotificationsWindowWin);
+};
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_MEDIA_GALLERY_MEDIA_DEVICE_NOTIFICATIONS_WINDOW_WIN_H_