Revert of Deprecate native and extension notification delegates.

chrome/browser/notifications/notification_display_service.cc

 // 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.
 
 #include "chrome/browser/notifications/notification_display_service.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/nullable_string16.h"
 #include "chrome/browser/notifications/non_persistent_notification_handler.h"
 #include "chrome/browser/notifications/notification_common.h"
 #include "chrome/browser/notifications/persistent_notification_handler.h"
 #include "extensions/features/features.h"
-#include "url/gurl.h"
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
 #include "chrome/browser/extensions/api/notifications/extension_notification_handler.h"
 #endif
 
 NotificationDisplayService::NotificationDisplayService(Profile* profile)
     : profile_(profile) {
   AddNotificationHandler(NotificationCommon::NON_PERSISTENT,
                          base::MakeUnique<NonPersistentNotificationHandler>());
   AddNotificationHandler(NotificationCommon::PERSISTENT,
@@ skipping 41 matching lines @@
       handler->OnClick(profile_, origin, notification_id, action_index, reply);
       break;
     case NotificationCommon::CLOSE:
       handler->OnClose(profile_, origin, notification_id, true /* by_user */);
       break;
     case NotificationCommon::SETTINGS:
       handler->OpenSettings(profile_);
       break;
   }
 }
-
-bool NotificationDisplayService::ShouldDisplayOverFullscreen(
-    const GURL& origin,
-    NotificationCommon::Type notification_type) {
-  NotificationHandler* handler = GetNotificationHandler(notification_type);
-  DCHECK(handler);
-  return handler->ShouldDisplayOnFullScreen(profile_, origin.spec());
-}