Move some of IOThread's command line logic to network_session_configurator.

content/network/BUILD.gn

 # Copyright 2017 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("//services/service_manager/public/service_manifest.gni")
 
 group("network") {
   visibility = [ "//content/*" ]  # This is an internal content API.
 
   if (is_component_build) {
@@ skipping 26 matching lines @@
     "network_service_url_loader_factory_impl.cc",
     "network_service_url_loader_factory_impl.h",
     "url_loader_impl.cc",
     "url_loader_impl.h",
   ]
 
   configs += [ "//content:content_implementation" ]
 
   deps = [
     "//base",
+    "//components/network_session_configurator/common",
     "//content:export",
     "//content/common",
     "//content/common:mojo_bindings",
     "//content/public/common:common_sources",
     "//mojo/public/cpp/bindings",
     "//net",
     "//services/service_manager/public/cpp",
     "//services/service_manager/public/interfaces",
   ]
 }
 
 service_manifest("manifest") {
   name = "network"
   source = "manifest.json"
 }