Rewrite of the EnrollEnterpriseDevice PyAuto automation hook for WebUI.

chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen_actor.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/chromeos/login/enrollment/enterprise_enrollment_screen_actor.h"
 
 namespace chromeos {
 
 EnterpriseEnrollmentScreenActor::EnterpriseEnrollmentScreenActor() {}
 
 EnterpriseEnrollmentScreenActor::~EnterpriseEnrollmentScreenActor() {}
 
 void EnterpriseEnrollmentScreenActor::AddObserver(Observer* obs) {
   observer_list_.AddObserver(obs);
 }
 
 void EnterpriseEnrollmentScreenActor::RemoveObserver(Observer* obs) {
   observer_list_.RemoveObserver(obs);
 }
 
-void EnterpriseEnrollmentScreenActor::NotifyObservers(bool succeeded) {
+void EnterpriseEnrollmentScreenActor::NotifyObservers(
+    bool succeeded, std::string error_string) {
   FOR_EACH_OBSERVER(Observer, observer_list_,
-                    OnEnrollmentComplete(this, succeeded));
+                    OnEnrollmentComplete(this, succeeded, error_string));
 }
 
 }  // namespace chromeos