Move device monitors out of //media/capture into //media/device_monitors

media/capture/system_message_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 MEDIA_CAPTURE_SYSTEM_MESSAGE_WINDOW_WIN_H_
-#define MEDIA_CAPTURE_SYSTEM_MESSAGE_WINDOW_WIN_H_
-
-#include <windows.h>
-
-#include <memory>
-
-#include "base/macros.h"
-#include "media/capture/capture_export.h"
-
-namespace media {
-
-class CAPTURE_EXPORT SystemMessageWindowWin {
- public:
-  SystemMessageWindowWin();
-
-  virtual ~SystemMessageWindowWin();
-
-  virtual LRESULT OnDeviceChange(UINT event_type, LPARAM 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) {
-    SystemMessageWindowWin* msg_wnd = reinterpret_cast<SystemMessageWindowWin*>(
-        GetWindowLongPtr(hwnd, GWLP_USERDATA));
-    if (msg_wnd)
-      return msg_wnd->WndProc(hwnd, message, wparam, lparam);
-    return ::DefWindowProc(hwnd, message, wparam, lparam);
-  }
-
-  HMODULE instance_;
-  HWND window_;
-  class DeviceNotifications;
-  std::unique_ptr<DeviceNotifications> device_notifications_;
-
-  DISALLOW_COPY_AND_ASSIGN(SystemMessageWindowWin);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_CAPTURE_SYSTEM_MESSAGE_WINDOW_WIN_H_