Implements the feature notification for Quick Unlock

chrome/browser/chromeos/login/lock/screen_locker.h

 // Copyright 2014 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_LOCK_SCREEN_LOCKER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOCK_SCREEN_LOCKER_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "base/time/time.h"
 #include "chrome/browser/chromeos/login/help_app_launcher.h"
 #include "chrome/browser/chromeos/login/lock/screen_locker_delegate.h"
+#include "chrome/browser/chromeos/login/quick_unlock/feature_notification_controller.h"
 #include "chrome/browser/chromeos/login/ui/login_display.h"
 #include "chromeos/login/auth/auth_status_consumer.h"
 #include "chromeos/login/auth/user_context.h"
 #include "components/user_manager/user.h"
 #include "ui/base/accelerators/accelerator.h"
 #include "ui/base/ime/chromeos/input_method_manager.h"
 
 namespace content {
 class WebUI;
 }
@@ skipping 158 matching lines @@
 
   // Copy of parameters passed to last call of OnLoginSuccess for usage in
   // UnlockOnLoginSuccess().
   std::unique_ptr<AuthenticationParametersCapture> authentication_capture_;
 
   // Provider for button icon set by the screenlockPrivate API.
   std::unique_ptr<ScreenlockIconProvider> screenlock_icon_provider_;
 
   scoped_refptr<input_method::InputMethodManager::State> saved_ime_state_;
 
+  // Quick Unlock Feature Notification controller.
+  scoped_refptr<quickunlock::FeatureNotificationController>

[jdufault, 2016/07/07 22:08:01]

The screen locker shouldn't own an instance of the controller (especially since
the controller is only allocated when the screen locker is about to be
destroyed). When the controller is allocated the Notification instance should be
the only owner.

Please add a note that the controller is owned by the Notification.

[malaykeshav, 2016/07/07 22:39:43]

Done

+      qu_feature_notification_controller_;
+
   base::WeakPtrFactory<ScreenLocker> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenLocker);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOCK_SCREEN_LOCKER_H_