Implements the feature notification for Quick Unlock

chrome/browser/chromeos/login/quick_unlock/quick_unlock_notification_controller.h

+// Copyright (c) 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_CHROMEOS_LOGIN_QUICK_UNLOCK_QUICK_UNLOCK_NOTIFICATION_CONTROLLER_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_QUICK_UNLOCK_NOTIFICATION_CONTROLLER_H_
+
+#include "base/macros.h"
+#include "base/time/time.h"
+#include "chrome/browser/notifications/notification_delegate.h"
+#include "content/public/browser/notification_observer.h"
+#include "content/public/browser/notification_registrar.h"
+
+class Profile;
+class NetworkState;
+class Notification;
+
+namespace chromeos {
+
+// Quick Unlock feature notification controller is responsible for managing the
+// new feature notification displayed to the user.
+class QuickUnlockNotificationController : public NotificationDelegate,
+                                          public content::NotificationObserver {
+ public:
+  explicit QuickUnlockNotificationController(Profile* profile);
+
+  // Returns true if the notification needs to be displayed for the given
+  // |profile|.
+  static bool ShouldShow(Profile* profile);
+
+  // content::NotificationObserver implementation.
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
+
+ private:
+  ~QuickUnlockNotificationController() override;
+
+  // NotificationDelegate overrides:
+  void Close(bool by_user) override;
+  void Click() override;
+  std::string id() const override;
+
+  Notification* CreateNotification();
+  void UnregisterObserver();
+
+  Profile* profile_;
+  content::NotificationRegistrar registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(QuickUnlockNotificationController);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_QUICK_UNLOCK_QUICK_UNLOCK_NOTIFICATION_CONTROLLER_H_