Update from https://crrev.com/304418

net/BUILD.gn

 # Copyright (c) 2013 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/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//url/config.gni")
 
 # TODO(cjhopman): //build/config/android/rules.gni also imports grit_rule.gni.
@@ skipping 455 matching lines @@
       "SystemConfiguration.framework",
       "resolv",
     ]
   }
 
   if (is_ios) {
     # Add back some sources that were otherwise filtered out. iOS additionally
     # doesn't set USE_NSS but needs some of the files.
     set_sources_assignment_filter([])
     sources += [
+      "base/net_util_mac.cc",
+      "base/net_util_mac.h",
       "base/network_change_notifier_mac.cc",
       "base/network_config_watcher_mac.cc",
       "base/platform_mime_util_mac.mm",
       "cert/cert_verify_proc_nss.cc",
       "cert/cert_verify_proc_nss.h",
       "cert/test_root_certs_nss.cc",
       "cert/x509_util_nss.cc",
       "cert/x509_util_nss.h",
       "proxy/proxy_resolver_mac.cc",
       "proxy/proxy_server_mac.cc",
@@ skipping 13 matching lines @@
   }
 
   if (is_android) {
     # Add some Linux sources that were excluded by the filter, but which
     # are needed.
     set_sources_assignment_filter([])
     sources += [
       "base/platform_mime_util_linux.cc",
       "base/address_tracker_linux.cc",
       "base/address_tracker_linux.h",
+      "base/net_util_linux.cc",
+      "base/net_util_linux.h"
     ]
     set_sources_assignment_filter(sources_assignment_filter)
 
     if (!is_android_webview_build) {
       deps += [ ":net_jni_headers" ]
     }
   }
 
   if (use_icu_alternatives_on_android) {
     deps -= [
@@ skipping 853 matching lines @@
   sources = [ "quic/quic_server_bin.cc" ]
   deps = [
     ":quic_tools",
     ":net",
     "//base",
     "//third_party/boringssl",
   ]
 }
 
 }  # !is_android && !is_win && !is_mac