Rewrite of the EnrollEnterpriseDevice PyAuto automation hook for WebUI.

chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen_actor.h

Index: chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen_actor.h
diff --git a/chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen_actor.h b/chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen_actor.h
index 7976adc9e3bbf29dacca43872cd0071389116c99..3eaa57560c4efac0927332dfc87a60c15a2af91e 100644
--- a/chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen_actor.h
+++ b/chrome/browser/chromeos/login/enrollment/enterprise_enrollment_screen_actor.h
@@ -37,7 +37,8 @@ class EnterpriseEnrollmentScreenActor {
     // Notifies observers of a change in enrollment state.
     virtual void OnEnrollmentComplete(
         EnterpriseEnrollmentScreenActor* enrollment_screen,
-        bool succeeded) = 0;
+        bool succeeded,
+        const std::string& error_string) = 0;
   };
 
   EnterpriseEnrollmentScreenActor();
@@ -73,12 +74,9 @@ class EnterpriseEnrollmentScreenActor {
   virtual void ShowAutoEnrollmentError() = 0;
   virtual void ShowNetworkEnrollmentError() = 0;
 
-  // Used for testing only.
-  virtual void SubmitTestCredentials(const std::string& email,
-                                     const std::string& password) = 0;
-
  protected:
-  void NotifyObservers(bool succeeded);
+  void NotifyObservers(bool succeeded,
+                       const std::string& error_string);
 
  private:
   // Observers.