chromeos: Split NetworkChangeNotifierChromeos initialization.

chrome/browser/chromeos/net/cros_network_change_notifier_factory.h

 // Copyright (c) 2011 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_CHROMEOS_NET_CROS_NETWORK_CHANGE_NOTIFIER_FACTORY_H_
 #define CHROME_BROWSER_CHROMEOS_NET_CROS_NETWORK_CHANGE_NOTIFIER_FACTORY_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "net/base/network_change_notifier_factory.h"
 
 namespace chromeos {
 
-class NetworkChangeNotifier;
+class NetworkChangeNotifierChromeos;
 
 // CrosNetworkChangeNotifierFactory creates ChromeOS-specific specialization of
 // NetworkChangeNotifier.
 class CrosNetworkChangeNotifierFactory
     : public net::NetworkChangeNotifierFactory {
  public:
   CrosNetworkChangeNotifierFactory() {}
 
   // Overrides of net::NetworkChangeNotifierFactory.
   virtual net::NetworkChangeNotifier* CreateInstance() OVERRIDE;
+
+  // Gets the instance of the NetworkChangeNotifier for Chrome OS.
+  // This is used for setting up the notifier at startup.
+  static NetworkChangeNotifierChromeos* GetInstance();
 };
 
 }  // namespace net
 
 #endif  // CHROME_BROWSER_CHROMEOS_NET_CROS_NETWORK_CHANGE_NOTIFIER_FACTORY_H_