Create a NetworkConnect class and Delegate

ash/system/tray/system_tray_notifier.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 "ash/system/tray/system_tray_notifier.h"
 
-#if defined(OS_CHROMEOS)
-#include "ash/system/chromeos/network/network_state_notifier.h"
-#endif
-
 namespace ash {
 
 SystemTrayNotifier::SystemTrayNotifier() {
-#if defined(OS_CHROMEOS)
-  network_state_notifier_.reset(new NetworkStateNotifier());
-#endif
 }
 
 SystemTrayNotifier::~SystemTrayNotifier() {
 }
 
 void SystemTrayNotifier::AddAccessibilityObserver(
     AccessibilityObserver* observer) {
   accessibility_observers_.AddObserver(observer);
 }
 
@@ skipping 351 matching lines @@
 
 void SystemTrayNotifier::NotifyLastWindowClosed() {
   FOR_EACH_OBSERVER(LastWindowClosedObserver,
                     last_window_closed_observers_,
                     OnLastWindowClosed());
 }
 
 #endif  // OS_CHROMEOS
 
 }  // namespace ash