Minimize the delegate dependencies for native extension notifications.

chrome/test/BUILD.gn

 # 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3753 matching lines @@
       "../browser/extensions/api/identity/identity_mint_queue_unittest.cc",
       "../browser/extensions/api/image_writer_private/destroy_partitions_operation_unittest.cc",
       "../browser/extensions/api/image_writer_private/operation_manager_unittest.cc",
       "../browser/extensions/api/image_writer_private/operation_unittest.cc",
       "../browser/extensions/api/image_writer_private/removable_storage_provider_chromeos_unittest.cc",
       "../browser/extensions/api/image_writer_private/test_utils.cc",
       "../browser/extensions/api/image_writer_private/test_utils.h",
       "../browser/extensions/api/image_writer_private/write_from_file_operation_unittest.cc",
       "../browser/extensions/api/image_writer_private/write_from_url_operation_unittest.cc",
       "../browser/extensions/api/management/management_api_unittest.cc",
+      "../browser/extensions/api/notifications/extension_notification_handler_unittest.cc",
       "../browser/extensions/api/omnibox/omnibox_unittest.cc",
       "../browser/extensions/api/passwords_private/passwords_private_delegate_impl_unittest.cc",
       "../browser/extensions/api/permissions/permissions_api_helpers_unittest.cc",
       "../browser/extensions/api/permissions/permissions_api_unittest.cc",
       "../browser/extensions/api/preference/preference_api_prefs_unittest.cc",
       "../browser/extensions/api/proxy/proxy_api_helpers_unittest.cc",
       "../browser/extensions/api/runtime/chrome_runtime_api_delegate_unittest.cc",
       "../browser/extensions/api/signed_in_devices/id_mapping_helper_unittest.cc",
       "../browser/extensions/api/signed_in_devices/signed_in_devices_api_unittest.cc",
       "../browser/extensions/api/signed_in_devices/signed_in_devices_manager_unittest.cc",
@@ skipping 1256 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }