Update from https://crrev.com/312398

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("//build/module_args/v8.gni")
 import("//url/config.gni")
+import("//testing/test.gni")
 
 # TODO(cjhopman): //build/config/android/rules.gni also imports grit_rule.gni.
 # Currently, that file can't be imported multiple times.  Make this always
 # imported when http://crbug.com/393704 is fixed.
 if (!is_android) {
   import("//tools/grit/grit_rule.gni")
 }
 
 if (is_android) {
   import("//build/config/android/config.gni")
@@ skipping 657 matching lines @@
     "test/spawned_test_server/remote_test_server.h",
     "test/spawned_test_server/spawned_test_server.h",
     "test/spawned_test_server/spawner_communicator.cc",
     "test/spawned_test_server/spawner_communicator.h",
     "test/url_request/url_request_failed_job.cc",
     "test/url_request/url_request_failed_job.h",
     "test/url_request/url_request_mock_data_job.cc",
     "test/url_request/url_request_mock_data_job.h",
     "test/url_request/url_request_mock_http_job.cc",
     "test/url_request/url_request_mock_http_job.h",
+    "test/url_request/url_request_slow_download_job.cc",
+    "test/url_request/url_request_slow_download_job.h",
     "url_request/test_url_fetcher_factory.cc",
     "url_request/test_url_fetcher_factory.h",
     "url_request/test_url_request_interceptor.cc",
     "url_request/test_url_request_interceptor.h",
     "url_request/url_request_test_util.cc",
     "url_request/url_request_test_util.h",
   ]
 
   configs += [ ":net_win_size_truncation" ]
 
@@ skipping 713 matching lines @@
       "quic/quic_server_bin.cc",
     ]
     deps = [
       ":quic_tools",
       ":net",
       "//base",
       "//third_party/boringssl",
     ]
   }
 }  # !is_android && !is_win && !is_mac