Added base::win::InitializeWindowClass() wrapper to make sure that window classes are properly asso…

content/browser/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 CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_
 #define CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_
 #pragma once
 
 #include <windows.h>
 
@@ skipping 18 matching lines @@
                                        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_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemMessageWindowWin);
 };
 
 #endif  // CONTENT_BROWSER_SYSTEM_MESSAGE_WINDOW_WIN_H_