Address bug where the one-click sign-in bar would never show again once

chrome/browser/signin/signin_manager_factory.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 "chrome/browser/signin/signin_manager_factory.h"
 
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "chrome/browser/signin/signin_manager.h"
 #include "chrome/browser/signin/token_service_factory.h"
@@ skipping 18 matching lines @@
   return Singleton<SigninManagerFactory>::get();
 }
 
 void SigninManagerFactory::RegisterUserPrefs(PrefService* user_prefs) {
   user_prefs->RegisterStringPref(prefs::kGoogleServicesUsername, "",
                                  PrefService::UNSYNCABLE_PREF);
   user_prefs->RegisterBooleanPref(prefs::kAutologinEnabled, true,
                                   PrefService::UNSYNCABLE_PREF);
   user_prefs->RegisterBooleanPref(prefs::kReverseAutologinEnabled, true,
                                   PrefService::UNSYNCABLE_PREF);
+  user_prefs->RegisterListPref(prefs::kReverseAutologinRejectedEmailList,
+                               new ListValue, PrefService::UNSYNCABLE_PREF);
   user_prefs->RegisterBooleanPref(prefs::kIsGooglePlusUser, false,
                                  PrefService::UNSYNCABLE_PREF);
 }
 
 // static
 void SigninManagerFactory::RegisterPrefs(PrefService* local_state) {
   local_state->RegisterStringPref(prefs::kGoogleServicesUsernamePattern, "",
                                   PrefService::UNSYNCABLE_PREF);
 }
 
 ProfileKeyedService* SigninManagerFactory::BuildServiceInstanceFor(
     Profile* profile) const {
   SigninManager* service = new SigninManager();
   service->Initialize(profile);
   return service;
 }