[EasyUnlock] Introduce EasyUnlockNotificationController

chrome/browser/signin/easy_unlock_notification_controller.h

+// 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.
+
+#ifndef CHROME_BROWSER_SIGNIN_EASY_UNLOCK_NOTIFICATION_CONTROLLER_H_
+#define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_NOTIFICATION_CONTROLLER_H_
+
+#include <memory>
+
+#include "base/macros.h"
+
+class Profile;
+
+// Responsible for displaying all notifications for EasyUnlock.
+class EasyUnlockNotificationController {
+ public:
+  // Creates an instance of the EasyUnlockNotificationController.
+  static std::unique_ptr<EasyUnlockNotificationController> Create(
+      Profile* profile);
+
+  EasyUnlockNotificationController() {}
+  virtual ~EasyUnlockNotificationController() {}
+
+  // Shows the notification when EasyUnlock is synced to a new Chromebook.
+  virtual void ShowChromebookAddedNotification() = 0;
+
+  // Shows the notification when EasyUnlock is already enabled on a Chromebook,
+  // but a different phone is synced as the unlock key.
+  virtual void ShowPairingChangeNotification() = 0;
+
+  // Shows the notification after password reauth confirming that the new phone
+  // should be used for EasyUnlock from now on.
+  virtual void ShowPairingChangeAppliedNotification(
+      const std::string& phone_name) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(EasyUnlockNotificationController);
+};
+
+#endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_NOTIFICATION_CONTROLLER_H_