Remove many delegates, let's see what breaks

chrome/browser/notifications/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/persistent_notification_handler.h"
 
 #include "base/logging.h"
 #include "chrome/browser/notifications/platform_notification_service_impl.h"
 #include "chrome/browser/profiles/profile.h"
 
@@ skipping 27 matching lines @@
   const GURL notification_origin(origin);
   DCHECK(notification_origin.is_valid());
 
   PlatformNotificationServiceImpl::GetInstance()->OnPersistentNotificationClick(
       profile, notification_id, notification_origin, action_index, reply);
 }
 
 void PersistentNotificationHandler::OpenSettings(Profile* profile) {
   NotificationCommon::OpenNotificationSettings(profile);
 }
+
+bool PersistentNotificationHandler::ShouldDisplayOnFullScreen(
+    Profile* profile,
+    const std::string& origin) const {
+  return NotificationCommon::ActiveTabIsFullScreen(profile, GURL(origin));
+}