[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 8fef5784720f0b9fd15ca4f020b68196a2c73937..0ab98393f94b0bab9a08be5a19e7e1b40bf96dac 100644
--- a/webkit/tools/test_shell/test_shell_request_context.cc
+++ b/webkit/tools/test_shell/test_shell_request_context.cc
@@ -77,10 +77,7 @@ void TestShellRequestContext::Init(
       net::ProxyService::CreateSystemProxyConfigService(
           base::ThreadTaskRunnerHandle::Get(), NULL));
 #endif
-  storage_.set_host_resolver(
-      net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
-                                    net::HostResolver::kDefaultRetryAttempts,
-                                    NULL));
+  storage_.set_host_resolver(net::HostResolver::CreateDefaultResolver(NULL));
   storage_.set_cert_verifier(net::CertVerifier::CreateDefault());
   storage_.set_proxy_service(net::ProxyService::CreateUsingSystemProxyResolver(
       proxy_config_service.release(), 0, NULL));