Framework to allow Chromoting host to respect NAT traversal policy in linux.

remoting/host/plugin/policy_hack/nat_policy_mac.h

+// 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.
+
+#ifndef REMOTING_HOST_PLUGIN_POLICY_HACK_NAT_POLICY_MAC_H_
+#define REMOTING_HOST_PLUGIN_POLICY_HACK_NAT_POLICY_MAC_H_
+
+#include "remoting/host/plugin/policy_hack/nat_policy.h"
+
+namespace base {
+
+class MessageLoopProxy;
+
+namespace files {
+class FilePathWatcher;
+}  // namespace base
+
+}  // namespace files
+
+namespace remoting {
+namespace policy_hack {
+
+class NatPolicyMac : public NatPolicy {
+ public:
+  NatPolicyMac(const NatPolicy::NatEnabledCallback& nat_enabled_cb);
+  ~NatPolicyMac();
+
+  virtual void StartWatching() OVERRIDE;
+  virtual void StopWatching(base::WaitableEvent* done) OVERRIDE;
+
+ private:
+  NatEnabledCallback nat_enabled_cb_;
+};
+
+}  // namespace policy_hack
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_PLUGIN_POLICY_HACK_NAT_POLICY_MAC_H_