add device type as an argument in OnDevicesChanged.

content/browser/system_message_window_win.cc

 // 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.
 
 #include "content/browser/system_message_window_win.h"
 
 #include <windows.h>
 #include <dbt.h>
 
 #include "base/logging.h"
@@ skipping 23 matching lines @@
   if (window_) {
     DestroyWindow(window_);
     UnregisterClass(WindowClassName, instance_);
   }
 }
 
 LRESULT SystemMessageWindowWin::OnDeviceChange(UINT event_type, DWORD data) {
   base::SystemMonitor* monitor = base::SystemMonitor::Get();
   switch (event_type) {
     case DBT_DEVNODES_CHANGED:
-      monitor->ProcessDevicesChanged();
+      monitor->ProcessDevicesChanged(base::SystemMonitor::DEVTYPE_UNKNOWN);
       break;
   }
   return TRUE;
 }
 
 LRESULT CALLBACK SystemMessageWindowWin::WndProc(HWND hwnd, UINT message,
                                                  WPARAM wparam, LPARAM lparam) {
   switch (message) {
     case WM_DEVICECHANGE:
       return OnDeviceChange(static_cast<UINT>(wparam),
                             static_cast<DWORD>(lparam));
     default:
       break;
   }
 
   return ::DefWindowProc(hwnd, message, wparam, lparam);
 }