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

content/shell/shell_url_request_context_getter.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 "content/shell/shell_url_request_context_getter.h"
 
 #include "base/logging.h"
 #include "base/string_split.h"
 #include "base/threading/worker_pool.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 45 matching lines @@
     storage_.reset(
         new net::URLRequestContextStorage(url_request_context_.get()));
     storage_->set_cookie_store(new net::CookieMonster(NULL, NULL));
     storage_->set_server_bound_cert_service(new net::ServerBoundCertService(
         new net::DefaultServerBoundCertStore(NULL),
         base::WorkerPool::GetTaskRunner(true)));
     url_request_context_->set_accept_language("en-us,en");
     url_request_context_->set_accept_charset("iso-8859-1,*,utf-8");
 
     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());
     // TODO(jam): use v8 if possible, look at chrome code.
     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(
@@ skipping 34 matching lines @@
 scoped_refptr<base::SingleThreadTaskRunner>
     ShellURLRequestContextGetter::GetNetworkTaskRunner() const {
   return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
 }
 
 net::HostResolver* ShellURLRequestContextGetter::host_resolver() {
   return url_request_context_->host_resolver();
 }
 
 }  // namespace content