Add ManagedUserSettingsService and a SupervisedUserPrefStore using it.

chrome/browser/managed_mode/managed_user_settings_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_settings_service_factory.h"
+
+#include "chrome/browser/managed_mode/managed_user_settings_service.h"
+#include "chrome/browser/profiles/incognito_helpers.h"
+#include "chrome/browser/profiles/profile.h"
+#include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
+
+// static
+ManagedUserSettingsService*
+ManagedUserSettingsServiceFactory::GetForProfile(Profile* profile) {
+  return static_cast<ManagedUserSettingsService*>(
+      GetInstance()->GetServiceForBrowserContext(profile, true));
+}
+
+// static
+ManagedUserSettingsServiceFactory*
+ManagedUserSettingsServiceFactory::GetInstance() {
+  return Singleton<ManagedUserSettingsServiceFactory>::get();
+}
+
+ManagedUserSettingsServiceFactory::ManagedUserSettingsServiceFactory()
+    : BrowserContextKeyedServiceFactory(
+          "ManagedUserSettingsService",
+          BrowserContextDependencyManager::GetInstance()) {
+}
+
+ManagedUserSettingsServiceFactory::
+    ~ManagedUserSettingsServiceFactory() {}
+
+BrowserContextKeyedService*
+ManagedUserSettingsServiceFactory::BuildServiceInstanceFor(
+    content::BrowserContext* profile) const {
+  return new ManagedUserSettingsService();
+}
+
+content::BrowserContext*
+ManagedUserSettingsServiceFactory::GetBrowserContextToUse(
+    content::BrowserContext* context) const {
+  return chrome::GetBrowserContextRedirectedInIncognito(context);
+}