Hook up ProfileIOData's URLRequestContext to a NetworkService.

content/network/url_loader_unittest.cc

 // 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.
 
 #include "base/files/file_util.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/test/scoped_task_environment.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/network/network_context.h"
 #include "content/network/url_loader_impl.h"
+#include "content/public/common/appcache_info.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/test/test_url_loader_client.h"
 #include "mojo/public/c/system/data_pipe.h"
 #include "mojo/public/cpp/system/wait.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
@@ skipping 163 matching lines @@
   // client receiving a connection error.
   DestroyContext();
   EXPECT_FALSE(loader_impl);
 
   client.RunUntilConnectionError();
   EXPECT_FALSE(client.has_received_completion());
   EXPECT_EQ(0u, client.download_data_length());
 }
 
 }  // namespace content