Remove many delegates, let's see what breaks

chrome/browser/extensions/api/notifications/notifications_apitest.cc

 // Copyright (c) 2012 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 "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/scoped_feature_list.h"
 #include "build/build_config.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/extensions/api/notifications/extension_notification_display_helper.h"
 #include "chrome/browser/extensions/api/notifications/extension_notification_display_helper_factory.h"
+#include "chrome/browser/extensions/api/notifications/extension_notification_handler.h"
 #include "chrome/browser/extensions/api/notifications/notifications_api.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_function_test_utils.h"
 #include "chrome/browser/notifications/notification.h"
 #include "chrome/browser/notifications/notification_common.h"
 #include "chrome/browser/notifications/notification_display_service_factory.h"
 #include "chrome/browser/notifications/notifier_state_tracker.h"
 #include "chrome/browser/notifications/notifier_state_tracker_factory.h"
 #include "chrome/browser/notifications/stub_notification_display_service.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 521 matching lines @@
       << "Not Active";
 
   Notification* notification = GetNotificationForExtension(extension);
   ASSERT_TRUE(notification);
 
   // The extension's window is being shown and focused, so its expected that
   // the notification displays on top of it.
   ASSERT_TRUE(notification->delegate()->ShouldDisplayOverFullscreen());
 }
 #endif  // !defined(OS_MACOSX)