Fix crash on Enrollment screen.

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

Index: chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc b/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
index 2f3a1cb03b3c33b34e9a200387c225b0fa257343..b271920a68e70fc73cb5b5886a269acafdd493fa 100644
--- a/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
@@ -294,18 +294,8 @@ OobeUI::OobeUI(content::WebUI* web_ui, const GURL& url)
   error_screen_handler_ = new ErrorScreenHandler();
   AddScreenHandler(error_screen_handler_);
 
-  // Initialize ErrorScreen if it hasn't initialized so that NetworkErrorModel
-  // is binded properly.
-  NetworkErrorModel* network_error_model = nullptr;
-  if (WizardController::default_controller()) {
-    network_error_model = static_cast<NetworkErrorModel*>(
-        WizardController::default_controller()->GetScreen(
-            WizardController::kErrorScreenName));
-    CHECK(network_error_model);
-  } else {
-    error_screen_.reset(new ErrorScreen(nullptr, error_screen_handler_));
-    network_error_model = error_screen_.get();
-  }
+  error_screen_.reset(new ErrorScreen(nullptr, error_screen_handler_));
+  NetworkErrorModel* network_error_model = error_screen_.get();
 
   EnrollmentScreenHandler* enrollment_screen_handler =
       new EnrollmentScreenHandler(network_state_informer_, network_error_model);
@@ -468,8 +458,8 @@ UserImageView* OobeUI::GetUserImageView() {
   return user_image_view_;
 }
 
-NetworkErrorView* OobeUI::GetNetworkErrorView() {
-  return error_screen_handler_;
+ErrorScreen* OobeUI::GetErrorScreen() {
+  return error_screen_.get();
 }
 
 SupervisedUserCreationScreenHandler*
@@ -527,10 +517,6 @@ void OobeUI::GetLocalizedStrings(base::DictionaryValue* localized_strings) {
   localized_strings->SetString("newKioskUI", new_kiosk_ui ? "on" : "off");
 }
 
-scoped_ptr<ErrorScreen> OobeUI::GetErrorScreen() {
-  return error_screen_.Pass();
-}
-
 void OobeUI::InitializeScreenMaps() {
   screen_names_.resize(SCREEN_UNKNOWN);
   screen_names_[SCREEN_OOBE_HID_DETECTION] = kScreenOobeHIDDetection;