Add ManagedUserTokenFetcher to fetch scoped-down tokens.

chrome/browser/managed_mode/managed_user_registration_service_factory.cc

 // Copyright 2013 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/managed_mode/managed_user_registration_service_factory.h"
 
 #include "chrome/browser/managed_mode/managed_user_registration_service.h"
+#include "chrome/browser/managed_mode/managed_user_token_fetcher.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/signin/profile_oauth2_token_service.h"
+#include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
 
 // static
 ManagedUserRegistrationService*
 ManagedUserRegistrationServiceFactory::GetForProfile(Profile* profile) {
   return static_cast<ManagedUserRegistrationService*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 ManagedUserRegistrationServiceFactory*
 ManagedUserRegistrationServiceFactory::GetInstance() {
   return Singleton<ManagedUserRegistrationServiceFactory>::get();
 }
 
 // static
 BrowserContextKeyedService*
 ManagedUserRegistrationServiceFactory::BuildInstanceFor(Profile* profile) {
-  return new ManagedUserRegistrationService(profile->GetPrefs());
+  OAuth2TokenService* oauth2_token_service =
+      ProfileOAuth2TokenServiceFactory::GetForProfile(profile);
+  return new ManagedUserRegistrationService(
+      profile->GetPrefs(),
+      ManagedUserTokenFetcher::Create(oauth2_token_service,
+                                      profile->GetRequestContext()));
 }
 
 ManagedUserRegistrationServiceFactory::ManagedUserRegistrationServiceFactory()
     : BrowserContextKeyedServiceFactory(
           "ManagedUserRegistrationService",
-          BrowserContextDependencyManager::GetInstance()) {}
+          BrowserContextDependencyManager::GetInstance()) {
+  DependsOn(ProfileOAuth2TokenServiceFactory::GetInstance());
+}
 
 ManagedUserRegistrationServiceFactory::
     ~ManagedUserRegistrationServiceFactory() {}
 
 BrowserContextKeyedService*
 ManagedUserRegistrationServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* profile) const {
   return BuildInstanceFor(static_cast<Profile*>(profile));
 }