Add NetworkNotificationView to tray_network.

chrome/browser/chromeos/network_message_observer.h

Index: chrome/browser/chromeos/network_message_observer.h
diff --git a/chrome/browser/chromeos/network_message_observer.h b/chrome/browser/chromeos/network_message_observer.h
index 8b48c272778091ebc8dffaf1af0a70c508f9f96e..42fa89945adb70038d227322744e1d9c991e961f 100644
--- a/chrome/browser/chromeos/network_message_observer.h
+++ b/chrome/browser/chromeos/network_message_observer.h
@@ -13,7 +13,6 @@
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/chromeos/cros/network_library.h"
-#include "chrome/browser/chromeos/notifications/system_notification.h"
 
 class Profile;
 
@@ -22,6 +21,8 @@ namespace chromeos {
 // The network message observer displays a system notification for network
 // messages.
 
+class NetworkMessageNotification;
+
 class NetworkMessageObserver
   : public NetworkLibrary::NetworkManagerObserver,
     public NetworkLibrary::CellularDataPlanObserver,
@@ -66,11 +67,11 @@ class NetworkMessageObserver
   CellularNetwork::DataLeft cellular_data_left_;
 
   // Notification for connection errors
-  SystemNotification notification_connection_error_;
+  scoped_ptr<NetworkMessageNotification> notification_connection_error_;
   // Notification for showing low data warning
-  SystemNotification notification_low_data_;
+  scoped_ptr<NetworkMessageNotification> notification_low_data_;
   // Notification for showing no data warning
-  SystemNotification notification_no_data_;
+  scoped_ptr<NetworkMessageNotification> notification_no_data_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkMessageObserver);
 };