Remove chrome/ code to handle App Notifications

chrome/browser/extensions/app_notification_test_util.h

-// 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.
-
-#ifndef CHROME_BROWSER_EXTENSIONS_APP_NOTIFICATION_TEST_UTIL_H_
-#define CHROME_BROWSER_EXTENSIONS_APP_NOTIFICATION_TEST_UTIL_H_
-
-#include "chrome/browser/extensions/app_notification.h"
-
-namespace extensions {
-class AppNotificationManager;
-}
-
-namespace app_notification_test_util {
-
-// Does a deep equality check of two AppNotificationList's, adding a gtest
-// failure and logging at the first difference found.
-void ExpectListsEqual(const extensions::AppNotificationList& one,
-                      const extensions::AppNotificationList& two);
-
-// Helper for inserting |count| dummy notifications with |prefix| in their
-// title and body into |list|.
-void AddNotifications(extensions::AppNotificationList* list,
-                      const std::string& extension_id,
-                      int count,
-                      const std::string& prefix);
-
-// Adds a copy of each item in |list| to |manager|.
-bool AddCopiesFromList(extensions::AppNotificationManager* manager,
-                       const extensions::AppNotificationList& list);
-
-}  // namespace app_notification_test_util
-
-#endif  // CHROME_BROWSER_EXTENSIONS_APP_NOTIFICATION_TEST_UTIL_H_