[cronet] make startNetLogToFile write to correct file

components/cronet/ios/test/BUILD.gn

 # Copyright 2016 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/ios/rules.gni")
 import("//testing/test.gni")
 
 test("cronet_test") {
   testonly = true
   sources = [
     "cronet_bidirectional_stream_test.mm",
     "cronet_http_test.mm",
+    "cronet_netlog_test.mm",
     "cronet_test_runner.mm",
     "quic_test_server.cc",
     "quic_test_server.h",
     "test_server.cc",
     "test_server.h",
   ]
 
   deps = [
     "//base",
     "//base:i18n",
     "//components/cronet/ios:cronet_framework+link",
     "//net",
     "//net:simple_quic_tools",
     "//net:test_support",
     "//third_party/icu",
   ]
 
   bundle_deps = [ "//components/cronet/ios:cronet_framework+bundle" ]
 }