cros: Replace WizardController string constants with OobeScreen values.

chrome/browser/chromeos/login/enterprise_enrollment_browsertest.cc

 // Copyright (c) 2015 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 "base/macros.h"
 #include "chrome/browser/chromeos/login/enrollment/enrollment_screen.h"
 #include "chrome/browser/chromeos/login/enrollment/enterprise_enrollment_helper.h"
 #include "chrome/browser/chromeos/login/enrollment/enterprise_enrollment_helper_impl.h"
 #include "chrome/browser/chromeos/login/enrollment/enterprise_enrollment_helper_mock.h"
 #include "chrome/browser/chromeos/login/login_manager_test.h"
@@ skipping 122 matching lines @@
         "document.getElementsByClassName('oauth-enroll-state-" + step +
         "').length";
     int count = js_checker().GetInt(js);
     return count > 0;
   }
 
   // Setup the enrollment screen.
   void ShowEnrollmentScreen() {
     LoginDisplayHost* host = LoginDisplayHost::default_host();
     ASSERT_TRUE(host != nullptr);
-    host->StartWizard(WizardController::kEnrollmentScreenName);
+    host->StartWizard(OobeScreen::SCREEN_OOBE_ENROLLMENT);
     OobeScreenWaiter(OobeScreen::SCREEN_OOBE_ENROLLMENT).Wait();
     ASSERT_TRUE(enrollment_screen() != nullptr);
     ASSERT_TRUE(WizardController::default_controller() != nullptr);
     ASSERT_FALSE(StartupUtils::IsOobeCompleted());
   }
 
   // Helper method to return the current EnrollmentScreen instance.
   EnrollmentScreen* enrollment_screen() {
     return EnrollmentScreen::Get(WizardController::default_controller());
   }
@@ skipping 68 matching lines @@
   EXPECT_FALSE(IsStepDisplayed("success"));
   EXPECT_FALSE(IsStepDisplayed("error"));
 
   SubmitAttributePromptUpdate();
 
   // We have to remove the enrollment_helper before the dtor gets called.
   enrollment_screen()->enrollment_helper_.reset();
 }
 
 }  // namespace chromeos