Use Mojo Permission Service when requesting Notifications permission.

content/child/notifications/notification_dispatcher.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 CONTENT_CHILD_NOTIFICATIONS_NOTIFICATION_DISPATCHER_H_
 #define CONTENT_CHILD_NOTIFICATIONS_NOTIFICATION_DISPATCHER_H_
 
 #include <map>
 
 #include "base/memory/ref_counted.h"
@@ skipping 13 matching lines @@
   explicit NotificationDispatcher(ThreadSafeSender* thread_safe_sender);
 
   // Generates a, process-unique new notification Id mapped to |thread_id|, and
   // return the notification Id. This method can be called on any thread.
   int GenerateNotificationId(int thread_id);
 
  protected:
   ~NotificationDispatcher() override;
 
  private:
-  bool ShouldHandleMessage(const IPC::Message& msg);
-
   // ChildMessageFilter implementation.
   base::TaskRunner* OverrideTaskRunnerForMessage(const IPC::Message& msg)
       override;
   bool OnMessageReceived(const IPC::Message& msg) override;
 
   scoped_refptr<base::MessageLoopProxy> main_thread_loop_proxy_;
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 
   using NotificationIdToThreadId = std::map<int, int>;
 
   base::Lock notification_id_map_lock_;
   NotificationIdToThreadId notification_id_map_;
   int next_notification_id_;
 
   DISALLOW_COPY_AND_ASSIGN(NotificationDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_NOTIFICATIONS_NOTIFICATION_DISPATCHER_H_