Copy the (early prototype of) remoting in Chrome into the public tree....

remoting/host/heartbeat_sender.h

+// Copyright (c) 2010 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_HEARTBEAT_SENDER_H_
+#define REMOTING_HOST_HEARTBEAT_SENDER_H_
+
+#include <string>
+
+#include "base/scoped_ptr.h"
+#include "base/ref_counted.h"
+#include "remoting/jingle_glue/iq_request.h"
+
+namespace remoting {
+
+class IqRequest;
+class JingleClient;
+
+// HeartbeatSender periodically sends hertbeats to the chromoting bot.
+// TODO(sergeyu): Write unittest for this class.
+class HeartbeatSender : public base::RefCountedThreadSafe<HeartbeatSender> {
+ public:
+  HeartbeatSender();
+
+  // Starts heart-beating for |jingle_client|.
+  void Start(JingleClient* jingle_client, const std::string& host_id);
+
+ private:
+
+  void DoStart();
+  void DoSendStanza();
+
+  bool started_;
+  JingleClient* jingle_client_;
+  std::string host_id_;
+  scoped_ptr<IqRequest> request_;
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_HEARTBEAT_SENDER_H_