Add DelayNavigationThrottle

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 3235 matching lines @@
     "../browser/notifications/desktop_notification_profile_util_unittest.cc",
     "../browser/notifications/notification_permission_context_unittest.cc",
     "../browser/notifications/notification_platform_bridge_mac_unittest.mm",
     "../browser/notifications/platform_notification_service_unittest.cc",
     "../browser/notifications/stub_alert_dispatcher_mac.h",
     "../browser/notifications/stub_alert_dispatcher_mac.mm",
     "../browser/notifications/stub_notification_center_mac.h",
     "../browser/notifications/stub_notification_center_mac.mm",
     "../browser/ntp_snippets/bookmark_last_visit_updater_unittest.cc",
     "../browser/ntp_snippets/download_suggestions_provider_unittest.cc",
+    "../browser/page_load_metrics/experiments/delay_navigation_throttle_unittest.cc",
     "../browser/page_load_metrics/metrics_web_contents_observer_unittest.cc",
     "../browser/page_load_metrics/observers/aborts_page_load_metrics_observer_unittest.cc",
     "../browser/page_load_metrics/observers/amp_page_load_metrics_observer_unittest.cc",
     "../browser/page_load_metrics/observers/core_page_load_metrics_observer_unittest.cc",
     "../browser/page_load_metrics/observers/data_reduction_proxy_metrics_observer_unittest.cc",
     "../browser/page_load_metrics/observers/document_write_page_load_metrics_observer_unittest.cc",
     "../browser/page_load_metrics/observers/from_gws_page_load_metrics_observer_unittest.cc",
     "../browser/page_load_metrics/observers/google_captcha_observer_unittest.cc",
     "../browser/page_load_metrics/observers/media_page_load_metrics_observer_unittest.cc",
     "../browser/page_load_metrics/observers/page_load_metrics_observer_test_harness.cc",
@@ skipping 1933 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }