Revert of Minimize the delegate dependencies for non persistent notifications.

chrome/browser/notifications/non_persistent_notification_handler.cc

 // 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.
 
 #include "chrome/browser/notifications/non_persistent_notification_handler.h"
 
 #include "base/strings/nullable_string16.h"
+#include "chrome/browser/notifications/notification_delegate.h"
 #include "chrome/browser/notifications/platform_notification_service_impl.h"
-#include "content/public/browser/notification_event_dispatcher.h"
 
 NonPersistentNotificationHandler::NonPersistentNotificationHandler() = default;
 NonPersistentNotificationHandler::~NonPersistentNotificationHandler() = default;
 
 void NonPersistentNotificationHandler::OnClose(
     Profile* profile,
     const std::string& origin,
     const std::string& notification_id,
     bool by_user) {
-  content::NotificationEventDispatcher::GetInstance()
-      ->DispatchNonPersistentCloseEvent(notification_id);
+  if (notifications_.find(notification_id) != notifications_.end()) {
+    notifications_[notification_id]->Close(by_user);
+    notifications_.erase(notification_id);
+  }
 }
 
 void NonPersistentNotificationHandler::OnClick(
     Profile* profile,
     const std::string& origin,
     const std::string& notification_id,
     int action_index,
     const base::NullableString16& reply) {
   DCHECK(reply.is_null());
 
-  // Non persistent notifications don't allow buttons.
-  // https://notifications.spec.whatwg.org/#create-a-notification
-  DCHECK_EQ(-1, action_index);
-
-  content::NotificationEventDispatcher::GetInstance()
-      ->DispatchNonPersistentClickEvent(notification_id);
+  if (notifications_.find(notification_id) != notifications_.end()) {
+    if (action_index >= 0)
+      notifications_[notification_id]->ButtonClick(action_index);
+    else
+      notifications_[notification_id]->Click();
+  }
 }
 
 void NonPersistentNotificationHandler::OpenSettings(Profile* profile) {
   NotificationCommon::OpenNotificationSettings(profile);
 }
+
+void NonPersistentNotificationHandler::RegisterNotification(
+    const std::string& notification_id,
+    NotificationDelegate* delegate) {
+  notifications_[notification_id] =
+      scoped_refptr<NotificationDelegate>(delegate);
+}