Fix chromeos::ProxyConfigService starting with the wrong ProxyConfig.

chromeos/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/ui.gni")
 import("//testing/test.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 assert(is_chromeos, "Non-ChromeOS builds must not depend on //chromeos")
 
@@ skipping 677 matching lines @@
     "network/network_type_pattern_unittest.cc",
     "network/network_ui_data_unittest.cc",
     "network/network_util_unittest.cc",
     "network/onc/onc_certificate_importer_impl_unittest.cc",
     "network/onc/onc_merger_unittest.cc",
     "network/onc/onc_normalizer_unittest.cc",
     "network/onc/onc_translator_unittest.cc",
     "network/onc/onc_utils_unittest.cc",
     "network/onc/onc_validator_unittest.cc",
     "network/prohibited_technologies_handler_unittest.cc",
+    "network/proxy/proxy_config_service_impl_unittest.cc",
     "network/shill_property_handler_unittest.cc",
     "printing/ppd_cache_unittest.cc",
     "printing/ppd_provider_unittest.cc",
     "printing/printer_translator_unittest.cc",
     "process_proxy/process_output_watcher_unittest.cc",
     "process_proxy/process_proxy_unittest.cc",
     "settings/timezone_settings_unittest.cc",
     "system/cpu_temperature_reader_unittest.cc",
     "system/name_value_pairs_parser_unittest.cc",
     "system/version_loader_unittest.cc",
@@ skipping 85 matching lines @@
   proto_out_dir = "chromeos/dbus/biod"
 }
 
 proto_library("media_perception_proto") {
   sources = [
     "dbus/proto/media_perception.proto",
   ]
 
   proto_out_dir = "chromeos/media_perception"
 }