Enable bootstrapping feature by default.

chrome/browser/chromeos/login/existing_user_controller_browsertest.cc

 // Copyright (c) 2012 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 <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
@@ skipping 397 matching lines @@
   void TearDownOnMainThread() override {
     ExistingUserControllerTest::TearDownOnMainThread();
 
     // Test case may be configured with the real user manager but empty user
     // list initially. So network OOBE screen is initialized.
     // Need to reset it manually so that we don't end up with CrosSettings
     // observer that wasn't removed.
     WizardController* controller = WizardController::default_controller();
     if (controller && controller->current_screen())
       controller->current_screen()->Hide();
+
+    if (LoginDisplayHost::default_host())
+      LoginDisplayHost::default_host()->Finalize();
+    base::MessageLoop::current()->RunUntilIdle();
   }
 
   void ExpectSuccessfulLogin(const UserContext& user_context) {
     test::UserSessionManagerTestApi session_manager_test_api(
         UserSessionManager::GetInstance());
     session_manager_test_api.InjectStubUserContext(user_context);
     EXPECT_CALL(*mock_login_display_host_,
                 StartWizard(WizardController::kTermsOfServiceScreenName))
         .Times(0);
     EXPECT_CALL(*mock_login_display_, SetUIEnabled(false)).Times(AnyNumber());
@@ skipping 300 matching lines @@
                        PRE_TestLoadingPublicUsersFromLocalState) {
   // First run propagates public accounts and stores them in Local State.
 }
 
 IN_PROC_BROWSER_TEST_F(ExistingUserControllerPublicSessionTest,
                        TestLoadingPublicUsersFromLocalState) {
   // Second run loads list of public accounts from Local State.
 }
 
 }  // namespace chromeos