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diff --git a/remoting/client/jingle_host_connection.h b/remoting/client/jingle_host_connection.h
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+++ b/remoting/client/jingle_host_connection.h
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+// 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.
+
+// JingleHostConnection implements the HostConnection interface using
+// libjingle as the transport protocol.
+//
+// Much of this class focuses on translating JingleClient and JingleChannel
+// callbacks into HostConnection::HostEventCallback messages.
+//
+// The public API of this class is designed to be asynchronous, and thread
+// safe for invocation from other threads.
+//
+// Internally though, all work delegeated to the |network_thread| given
+// during construction.  Any event handlers running on the |network_thread|
+// should not block.
+
+#ifndef REMOTING_CLIENT_JINGLE_HOST_CONNECTION_H_
+#define REMOTING_CLIENT_JINGLE_HOST_CONNECTION_H_
+
+#include "base/ref_counted.h"
+#include "base/scoped_ptr.h"
+#include "remoting/base/protocol_decoder.h"
+#include "remoting/client/host_connection.h"
+#include "remoting/jingle_glue/jingle_channel.h"
+#include "remoting/jingle_glue/jingle_client.h"
+
+class MessageLoop;
+
+namespace remoting {
+
+class JingleThread;
+
+class JingleHostConnection :
+    public base::RefCountedThreadSafe<JingleHostConnection>,
+    public HostConnection,
+    public JingleChannel::Callback,
+    public JingleClient::Callback {
+ public:
+  JingleHostConnection(JingleThread* network_thread,
+                       HostEventCallback* event_callback);
+  virtual ~JingleHostConnection();
+
+  virtual void Connect(const std::string& username,
+                       const std::string& auth_token,
+                       const std::string& host_jid);
+  virtual void Disconnect();
+
+  // JingleChannel::Callback interface.
+  virtual void OnStateChange(JingleChannel* channel,
+                             JingleChannel::State state);
+  virtual void OnPacketReceived(JingleChannel* channel,
+                                scoped_refptr<media::DataBuffer> buffer);
+
+  // JingleClient::Callback interface.
+  virtual void OnStateChange(JingleClient* client, JingleClient::State state);
+  virtual bool OnAcceptConnection(JingleClient* client, const std::string& jid,
+                                  JingleChannel::Callback** callback);
+  virtual void OnNewConnection(JingleClient* client,
+                               scoped_refptr<JingleChannel> channel);
+
+ private:
+  MessageLoop* message_loop();
+
+  void DoConnect(const std::string& username,
+                 const std::string& auth_token,
+                 const std::string& host_jid);
+  void DoDisconnect();
+
+  JingleThread* network_thread_;
+
+  scoped_refptr<JingleClient> jingle_client_;
+  scoped_refptr<JingleChannel> jingle_channel_;
+
+  ProtocolDecoder decoder_;
+  HostEventCallback* event_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(JingleHostConnection);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_CLIENT_JINGLE_HOST_CONNECTION_H_