Allow hostnames in socket.connect().

chrome/browser/extensions/api/dns/host_resolver_wrapper.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 "chrome/browser/extensions/api/dns/host_resolver_wrapper.h"
+
+namespace extensions {
+
+HostResolverWrapper::HostResolverWrapper()
+    : resolver_(NULL) {
+}
+
+// static
+HostResolverWrapper* HostResolverWrapper::GetInstance() {
+  return Singleton<extensions::HostResolverWrapper>::get();
+}
+
+net::HostResolver* HostResolverWrapper::GetHostResolver(
+    net::HostResolver* real_resolver) {
+  return resolver_ ? resolver_ : real_resolver;
+}
+
+void HostResolverWrapper::SetHostResolverForTesting(
+    net::HostResolver* mock_resolver) {
+  resolver_ = mock_resolver;
+}
+
+}  // namespace extensions