Refactor MessageCenterSettingsController.

chrome/browser/notifications/arc_application_notifier_source_chromeos.h

+// Copyright 2016 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.
+
+#ifndef CHROME_BROWSER_NOTIFICATIONS_ARC_APPLICATION_NOTIFIER_SOURCE_CHROMEOS_H_
+#define CHROME_BROWSER_NOTIFICATIONS_ARC_APPLICATION_NOTIFIER_SOURCE_CHROMEOS_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "base/macros.h"
+#include "chrome/browser/notifications/notifier_source.h"
+
+namespace content {
+class BrowserContext;
+}
+
+namespace message_center {
+struct Notifier;
+}
+
+namespace arc {
+
+// TODO(hirono): Observe enabled flag change and notify it to message center.
+class ArcApplicationNotifierSourceChromeOS : public NotifierSource {
+ public:
+  explicit ArcApplicationNotifierSourceChromeOS(Observer* observer);
+
+  // TODO(hirono): Rewrite the function with new API to fetch package list.
+  std::vector<std::unique_ptr<message_center::Notifier>> GetNotifierList(
+      Profile* profile) override;
+  void SetNotifierEnabled(Profile* profile,
+                          const message_center::Notifier& notifier,
+                          bool enabled) override;
+  message_center::NotifierId::NotifierType GetNotifierType() override;
+
+ private:
+  Observer* observer_;
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_NOTIFICATIONS_ARC_APPLICATION_NOTIFIER_SOURCE_CHROMEOS_H_