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

remoting/host/url_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 "remoting/host/url_request_context.h"
 
 #include "base/message_loop_proxy.h"
 #include "net/base/cert_verifier.h"
 #include "net/base/host_resolver.h"
 #include "net/base/ssl_config_service_defaults.h"
@@ skipping 65 matching lines @@
 
 }  // namespace
 
 // TODO(willchan): This is largely copied from service_url_request_context.cc,
 // which is in turn copied from some test code. Move it somewhere reusable.
 URLRequestContext::URLRequestContext(
     scoped_ptr<net::ProxyConfigService> proxy_config_service)
     : ALLOW_THIS_IN_INITIALIZER_LIST(storage_(this)) {
   scoped_ptr<VlogNetLog> net_log(new VlogNetLog());
   storage_.set_host_resolver(
-      net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
-                                    net::HostResolver::kDefaultRetryAttempts,
-                                    net_log.get()));
+      net::HostResolver::CreateDefaultResolver(net_log.get()));
   storage_.set_proxy_service(net::ProxyService::CreateUsingSystemProxyResolver(
       proxy_config_service.release(), 0u, net_log.get()));
   storage_.set_cert_verifier(net::CertVerifier::CreateDefault());
   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);
   storage_.set_transport_security_state(new net::TransportSecurityState);
 
   net::HttpNetworkSession::Params session_params;
@@ skipping 32 matching lines @@
 
 scoped_refptr<base::SingleThreadTaskRunner>
 URLRequestContextGetter::GetNetworkTaskRunner() const {
   return network_task_runner_;
 }
 
 URLRequestContextGetter::~URLRequestContextGetter() {
 }
 
 }  // namespace remoting