Pass file task runner to net::URLRequestContextBuilder

remoting/base/url_request_context_getter.cc

 // 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.
 
 #include "remoting/base/url_request_context_getter.h"
 
 #include "base/single_thread_task_runner.h"
 #include "net/proxy/proxy_config_service.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_builder.h"
 #include "remoting/base/vlog_net_log.h"
 
 namespace remoting {
 
 URLRequestContextGetter::URLRequestContextGetter(
     scoped_refptr<base::SingleThreadTaskRunner> network_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> file_task_runner)
-    : network_task_runner_(network_task_runner) {
+    : network_task_runner_(network_task_runner),
+      file_task_runner_(file_task_runner) {
   proxy_config_service_.reset(net::ProxyService::CreateSystemProxyConfigService(
       network_task_runner_, file_task_runner));
 }
 
 net::URLRequestContext* URLRequestContextGetter::GetURLRequestContext() {
   if (!url_request_context_.get()) {
     net::URLRequestContextBuilder builder;
+    builder.SetFileTaskRunner(file_task_runner_);
     builder.set_net_log(new VlogNetLog());
     builder.DisableHttpCache();
     builder.set_proxy_config_service(proxy_config_service_.release());
     url_request_context_.reset(builder.Build());
   }
   return url_request_context_.get();
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
 URLRequestContextGetter::GetNetworkTaskRunner() const {
   return network_task_runner_;
 }
 
 URLRequestContextGetter::~URLRequestContextGetter() {
 }
 
 }  // namespace remoting