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

webkit/tools/test_shell/test_shell_request_context.cc

Index: webkit/tools/test_shell/test_shell_request_context.cc
diff --git a/webkit/tools/test_shell/test_shell_request_context.cc b/webkit/tools/test_shell/test_shell_request_context.cc
index 42d73c28caf929edfd3d8b9d4822402641ffd650..311b5e2629ae2caa9b56ae75111a616f88344b71 100644
--- a/webkit/tools/test_shell/test_shell_request_context.cc
+++ b/webkit/tools/test_shell/test_shell_request_context.cc
@@ -77,9 +77,7 @@ void TestShellRequestContext::Init(
           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));