[oobe] Show error notification on the network screen.

chrome/browser/ui/webui/chromeos/login/network_screen_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/chromeos/login/network_screen_handler.h"
 
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 63 matching lines @@
       web_ui_, WebUILoginDisplay::GetLoginWindow()->GetNativeWindow()));
 
   ShowScreen(kNetworkScreen, NULL);
 }
 
 void NetworkScreenHandler::Hide() {
   dropdown_.reset();
 }
 
 void NetworkScreenHandler::ShowError(const string16& message) {
-  // scoped_ptr<Value> message_value(Value::CreateStringValue(message));
-  // web_ui_->CallJavascriptFunction("cr.ui.Oobe.showError", *message_value);
+  scoped_ptr<Value> message_value(Value::CreateStringValue(message));
+  web_ui_->CallJavascriptFunction("oobe.NetworkScreen.showError",
+                                  *message_value);
 }
 
 void NetworkScreenHandler::ClearErrors() {
-  // web_ui_->CallJavascriptFunction("cr.ui.Oobe.clearErrors");
+  web_ui_->CallJavascriptFunction("oobe.NetworkScreen.clearErrors");
 }
 
 void NetworkScreenHandler::ShowConnectingStatus(
     bool connecting,
     const string16& network_id) {
   // string16 connecting_label =
   //     l10n_util::GetStringFUTF16(IDS_NETWORK_SELECTION_CONNECTING,
   //                                network_id);
   // scoped_ptr<Value> connecting_value(Value::CreateBooleanValue(connecting));
   // scoped_ptr<Value> network_id_value(Value::CreateStringValue(network_id));
@@ skipping 141 matching lines @@
     input_method->SetString("title",
       WideToUTF16(InputMethodMenu::GetTextForMenu(input_methods->at(i))));
     input_method->SetBoolean("selected",
         input_methods->at(i).id() == current_input_method_id);
     input_methods_list->Append(input_method);
   }
   return input_methods_list;
 }
 
 }  // namespace chromeos