Add support for loading user cloud policy on desktop.

chrome/browser/policy/user_policy_signin_service_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/policy/user_policy_signin_service_factory.h"
+
+#include "chrome/browser/policy/user_policy_signin_service.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_dependency_manager.h"
+#include "chrome/browser/signin/signin_manager_factory.h"
+#include "chrome/browser/signin/token_service_factory.h"
+#include "chrome/common/pref_names.h"
+
+namespace policy {
+
+UserPolicySigninServiceFactory::UserPolicySigninServiceFactory()
+    : ProfileKeyedServiceFactory("UserPolicySigninService",
+                                 ProfileDependencyManager::GetInstance()) {
+  DependsOn(TokenServiceFactory::GetInstance());
+  DependsOn(SigninManagerFactory::GetInstance());
+}
+
+UserPolicySigninServiceFactory::~UserPolicySigninServiceFactory() {}
+
+// static
+UserPolicySigninService* UserPolicySigninServiceFactory::GetForProfile(
+    Profile* profile) {
+  return static_cast<UserPolicySigninService*>(
+      GetInstance()->GetServiceForProfile(profile, true));
+}
+
+// static
+UserPolicySigninServiceFactory* UserPolicySigninServiceFactory::GetInstance() {
+  return Singleton<UserPolicySigninServiceFactory>::get();
+}
+
+ProfileKeyedService* UserPolicySigninServiceFactory::BuildServiceInstanceFor(
+    Profile* profile) const {
+  return new UserPolicySigninService(profile,
+                                     profile->GetUserCloudPolicyManager());
+}
+
+bool UserPolicySigninServiceFactory::ServiceIsCreatedWithProfile() {
+  // Create this object when the profile is created so it can track any
+  // user signin activity.
+  return true;
+}
+
+void UserPolicySigninServiceFactory::RegisterUserPrefs(
+    PrefService* user_prefs) {
+  user_prefs->RegisterBooleanPref(prefs::kLoadCloudPolicyOnSignin,
+                                  false, PrefService::UNSYNCABLE_PREF);
+}
+
+}  // namespace policy