Implement ServiceWorkerFetchDispatcher::MaybeStartNavigationPreload().

content/browser/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/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 source_set("browser") {
@@ skipping 1185 matching lines @@
     "service_worker/service_worker_internals_ui.cc",
     "service_worker/service_worker_internals_ui.h",
     "service_worker/service_worker_job_coordinator.cc",
     "service_worker/service_worker_job_coordinator.h",
     "service_worker/service_worker_metrics.cc",
     "service_worker/service_worker_metrics.h",
     "service_worker/service_worker_navigation_handle.cc",
     "service_worker/service_worker_navigation_handle.h",
     "service_worker/service_worker_navigation_handle_core.cc",
     "service_worker/service_worker_navigation_handle_core.h",
+    "service_worker/service_worker_navigation_preload_fetcher.cc",
+    "service_worker/service_worker_navigation_preload_fetcher.h",
     "service_worker/service_worker_process_manager.cc",
     "service_worker/service_worker_process_manager.h",
     "service_worker/service_worker_provider_host.cc",
     "service_worker/service_worker_provider_host.h",
     "service_worker/service_worker_quota_client.cc",
     "service_worker/service_worker_quota_client.h",
     "service_worker/service_worker_read_from_cache_job.cc",
     "service_worker/service_worker_read_from_cache_job.h",
     "service_worker/service_worker_register_job.cc",
     "service_worker/service_worker_register_job.h",
@@ skipping 726 matching lines @@
   if (!is_component_build) {
     public_deps = [
       ":browser",
     ]
   } else {
     public_deps = [
       "//third_party/leveldatabase",
     ]
   }
 }