Update NetworkStateNotifier to use message_center.

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
 
@@ skipping 269 matching lines @@
 }
 
 void SystemTrayNotifier::NotifyUserUpdate() {
   FOR_EACH_OBSERVER(UserObserver,
                     user_observers_,
                     OnUserUpdate());
 }
 
 #if defined(OS_CHROMEOS)
 
-void SystemTrayNotifier::NotifySetNetworkMessage(
-    NetworkTrayDelegate* delegate,
-    NetworkObserver::MessageType message_type,
-    NetworkObserver::NetworkType network_type,
-    const base::string16& title,
-    const base::string16& message,
-    const std::vector<base::string16>& links) {
-  FOR_EACH_OBSERVER(NetworkObserver,
-                    network_observers_,
-                    SetNetworkMessage(
-                        delegate,
-                        message_type,
-                        network_type,
-                        title,
-                        message,
-                        links));
-}
-
-void SystemTrayNotifier::NotifyClearNetworkMessage(
-    NetworkObserver::MessageType message_type) {
-  FOR_EACH_OBSERVER(NetworkObserver,
-                    network_observers_,
-                    ClearNetworkMessage(message_type));
-}
-
 void SystemTrayNotifier::NotifyRequestToggleWifi() {
   FOR_EACH_OBSERVER(NetworkObserver,
                     network_observers_,
                     RequestToggleWifi());
 }
 
 void SystemTrayNotifier::NotifyEnterpriseDomainChanged() {
   FOR_EACH_OBSERVER(EnterpriseDomainObserver, enterprise_domain_observers_,
       OnEnterpriseDomainChanged());
 }
@@ skipping 18 matching lines @@
 }
 
 void SystemTrayNotifier::NotifyScreenShareStop() {
   FOR_EACH_OBSERVER(ScreenShareObserver, screen_share_observers_,
                     OnScreenShareStop());
 }
 
 #endif  // OS_CHROMEOS
 
 }  // namespace ash