DnsConfigService and a posix implementation

net/dns/dns_config_service.cc

Index: net/dns/dns_config_service.cc
diff --git a/net/dns/dns_config_service.cc b/net/dns/dns_config_service.cc
new file mode 100644
index 0000000000000000000000000000000000000000..05a5513cfb499575d7f2143a61af5970bccf96c2
--- /dev/null
+++ b/net/dns/dns_config_service.cc
@@ -0,0 +1,29 @@
+// Copyright (c) 2011 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 "net/dns/dns_config_service.h"
+
+#include "net/base/ip_endpoint.h"
+
+namespace net {
+
+// Default values are taken from glibc resolv.h.
+DnsConfig::DnsConfig()
+  : ndots(1),
+    timeout(base::TimeDelta::FromSeconds(5)),
+    attempts(2),
+    rotate(false),
+    edns0(false) {}
+
+bool DnsConfig::Equals(const DnsConfig& d) const {
+  return (nameservers == d.nameservers) &&
+         (search == d.search) &&
+         (ndots == d.ndots) &&
+         (timeout == d.timeout) &&
+         (attempts == d.attempts) &&
+         (rotate == d.rotate) &&
+         (edns0 == d.edns0);
+}
+
+}  // namespace net