[net] Change factory methods for HostResolver and HostCache to return a scoped_ptr

webkit/tools/test_shell/test_shell_request_context.cc

 // Copyright (c) 2012 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 "webkit/tools/test_shell/test_shell_request_context.h"
 
 #include "build/build_config.h"
 
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
@@ skipping 59 matching lines @@
   // TODO(port): rename "linux" to some nonspecific unix.
   scoped_ptr<net::ProxyConfigService> proxy_config_service(
       new net::ProxyConfigServiceFixed(net::ProxyConfig()));
 #else
   // Use the system proxy settings.
   scoped_ptr<net::ProxyConfigService> proxy_config_service(
       net::ProxyService::CreateSystemProxyConfigService(
           base::ThreadTaskRunnerHandle::Get(), NULL));
 #endif
   storage_.set_host_resolver(
-      net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
-                                    net::HostResolver::kDefaultRetryAttempts,
-                                    NULL));
+      net::HostResolver::CreateDefaultResolver(NULL).release());
   storage_.set_cert_verifier(net::CertVerifier::CreateDefault());
   storage_.set_proxy_service(net::ProxyService::CreateUsingSystemProxyResolver(
       proxy_config_service.release(), 0, NULL));
   storage_.set_ssl_config_service(
       new net::SSLConfigServiceDefaults);
 
   storage_.set_http_auth_handler_factory(
       net::HttpAuthHandlerFactory::CreateDefault(host_resolver()));
   storage_.set_http_server_properties(
       new net::HttpServerPropertiesImpl);
@@ skipping 39 matching lines @@
   storage_.set_job_factory(job_factory);
 }
 
 TestShellRequestContext::~TestShellRequestContext() {
 }
 
 const std::string& TestShellRequestContext::GetUserAgent(
     const GURL& url) const {
   return webkit_glue::GetUserAgent(url);
 }