Multicast DNS implementation (initial)

net/dns/mdns_listener.cc

Index: net/dns/mdns_listener.cc
diff --git a/net/dns/mdns_listener.cc b/net/dns/mdns_listener.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f452a89c34e58b927456c513f1513d955ef32e70
--- /dev/null
+++ b/net/dns/mdns_listener.cc
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+// Copyright (c) 2013 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/mdns_listener.h"
+#include "net/dns/mdns_listener_impl.h"
+
+namespace net {
+
+const char kMDNSMulticastGroupIPv4[] = "224.0.0.251";
+const char kMDNSMulticastGroupIPv6[] = "FF02::FB";
+
+static MDnsListenerFactory* g_instance = NULL;
+
+MDnsListenerFactory* MDnsListenerFactory::GetInstance() {
+  if (!g_instance) {
+    g_instance = new MDnsListenerFactoryImpl();
+  }
+
+  return g_instance;
+}
+
+void MDnsListenerFactory::SetInstance(MDnsListenerFactory* instance) {
+  g_instance = instance;
+}
+}