Remove many delegates, let's see what breaks

chrome/browser/notifications/platform_notification_service_interactive_uitest.cc

 // 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.
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/feature_list.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_split.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/scoped_feature_list.h"
 #include "base/time/time.h"
 #include "chrome/browser/engagement/site_engagement_score.h"
 #include "chrome/browser/engagement/site_engagement_service.h"
 #include "chrome/browser/notifications/desktop_notification_profile_util.h"
 #include "chrome/browser/notifications/message_center_display_service.h"
 #include "chrome/browser/notifications/notification.h"
+#include "chrome/browser/notifications/notification_common.h"
 #include "chrome/browser/notifications/notification_test_util.h"
 #include "chrome/browser/notifications/platform_notification_service_impl.h"
 #include "chrome/browser/notifications/web_notification_delegate.h"
 #include "chrome/browser/permissions/permission_manager.h"
 #include "chrome/browser/permissions/permission_request_manager.h"
 #include "chrome/browser/permissions/permission_result.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
@@ skipping 822 matching lines @@
       RunScript("DisplayPersistentAllOptionsNotification()", &script_result));
   EXPECT_EQ("ok", script_result);
 
   ASSERT_EQ(1u, ui_manager()->GetNotificationCount());
   const Notification& notification = ui_manager()->GetNotificationAt(0);
 
   // Since the kNotificationContentImage kill switch has disabled images, the
   // notification should be shown without an image.
   EXPECT_TRUE(notification.image().IsEmpty());
 }