Simplifed logic of showing/hiding cancel buttons on login screens.

chrome/browser/chromeos/login/supervised/supervised_user_creation_browsertest.cc

 // Copyright 2014 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 <string>
 
 #include "base/compiler_specific.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 162 matching lines @@
   EXPECT_TRUE(registration_utility_stub_->register_was_called());
   EXPECT_EQ(registration_utility_stub_->display_name(),
             base::UTF8ToUTF16(kTestSupervisedUserDisplayName));
 
   std::string user_id = registration_utility_stub_->supervised_user_id();
 
   // Make sure user is already in list.
   ASSERT_EQ(3UL, user_manager::UserManager::Get()->GetUsers().size());
 
   // We wait for token now. Press cancel button at this point.
-  JSEvalOrExitBrowser("$('cancel-add-user-button').click()");
+  JSEvalOrExitBrowser("$('supervised-user-creation').cancel()");
 }
 
 IN_PROC_BROWSER_TEST_(
     SupervisedUserTransactionCleanupTest,
     CreateAndCancelSupervisedUser,
     SupervisedUserTransactionCleanupTest2,
     testing::internal::GetTypeId<SupervisedUserTransactionCleanupTest>()) {
   // Make sure there is no supervised user in list.
   ASSERT_EQ(2UL, user_manager::UserManager::Get()->GetUsers().size());
 }
 
 }  // namespace chromeos