Make the SigninErrorController a PKS.

chrome/browser/signin/signin_error_notifier_factory_ash.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 "chrome/browser/signin/signin_error_notifier_factory_ash.h"
 
 #include "ash/shell.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
+#include "chrome/browser/signin/signin_error_controller_factory.h"
 #include "chrome/browser/signin/signin_error_notifier_ash.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "components/signin/core/browser/profile_oauth2_token_service.h"
 
 SigninErrorNotifierFactory::SigninErrorNotifierFactory()
     : BrowserContextKeyedServiceFactory(
         "SigninErrorNotifier",
         BrowserContextDependencyManager::GetInstance()) {
-  DependsOn(ProfileOAuth2TokenServiceFactory::GetInstance());
+  DependsOn(SigninErrorControllerFactory::GetInstance());
 }
 
 SigninErrorNotifierFactory::~SigninErrorNotifierFactory() {}
 
 // static
 SigninErrorNotifier* SigninErrorNotifierFactory::GetForProfile(
     Profile* profile) {
   return static_cast<SigninErrorNotifier*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 SigninErrorNotifierFactory* SigninErrorNotifierFactory::GetInstance() {
   return Singleton<SigninErrorNotifierFactory>::get();
 }
 
 KeyedService* SigninErrorNotifierFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
   if (!ash::Shell::HasInstance())
     return NULL;
 
   Profile* profile = static_cast<Profile*>(context);
 
-  SigninErrorController* controller =
-      ProfileOAuth2TokenServiceFactory::GetForProfile(profile)->
-      signin_error_controller();
-
-  return new SigninErrorNotifier(controller, profile);
+  return new SigninErrorNotifier(
+      SigninErrorControllerFactory::GetForProfile(profile), profile);
 }