Migrate extension notifications to the new NotificationDisplayService

chrome/browser/extensions/api/notifications/extension_notification_display_helper_factory.cc

+// Copyright 2017 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/extensions/api/notifications/extension_notification_display_helper_factory.h"
+
+#include "chrome/browser/extensions/api/notifications/extension_notification_display_helper.h"
+#include "chrome/browser/profiles/profile.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+
+namespace extensions {
+
+// static
+ExtensionNotificationDisplayHelperFactory*
+ExtensionNotificationDisplayHelperFactory::GetInstance() {
+  return base::Singleton<ExtensionNotificationDisplayHelperFactory>::get();
+}
+
+// static
+ExtensionNotificationDisplayHelper*
+ExtensionNotificationDisplayHelperFactory::GetForProfile(Profile* profile) {
+  return static_cast<ExtensionNotificationDisplayHelper*>(
+      GetInstance()->GetServiceForBrowserContext(profile, true /* create */));
+}
+
+KeyedService*
+ExtensionNotificationDisplayHelperFactory::BuildServiceInstanceFor(
+    content::BrowserContext* context) const {
+  Profile* profile = Profile::FromBrowserContext(context);
+  return new ExtensionNotificationDisplayHelper(profile);
+}
+
+ExtensionNotificationDisplayHelperFactory::
+    ExtensionNotificationDisplayHelperFactory()
+    : BrowserContextKeyedServiceFactory(
+          "ExtensionNotificationDisplayHelperFactory",
+          BrowserContextDependencyManager::GetInstance()) {}
+
+ExtensionNotificationDisplayHelperFactory::
+    ~ExtensionNotificationDisplayHelperFactory() {}
+
+}  // namespace extensions