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diff --git a/net/base/tcp_client_socket_libevent.h b/net/base/tcp_client_socket_libevent.h
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+++ b/net/base/tcp_client_socket_libevent.h
@@ -0,0 +1,92 @@
+// Copyright (c) 2006-2009 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 NET_BASE_TCP_CLIENT_SOCKET_LIBEVENT_H_
+#define NET_BASE_TCP_CLIENT_SOCKET_LIBEVENT_H_
+
+#include <sys/socket.h>  // for struct sockaddr
+
+#include "base/message_loop.h"
+#include "net/base/address_list.h"
+#include "net/base/client_socket.h"
+#include "net/base/completion_callback.h"
+
+struct event;  // From libevent
+
+namespace net {
+
+// A client socket that uses TCP as the transport layer.
+class TCPClientSocketLibevent : public ClientSocket,
+                                public MessageLoopForIO::Watcher {
+ public:
+  // The IP address(es) and port number to connect to.  The TCP socket will try
+  // each IP address in the list until it succeeds in establishing a
+  // connection.
+  explicit TCPClientSocketLibevent(const AddressList& addresses);
+
+  ~TCPClientSocketLibevent();
+
+  // ClientSocket methods:
+  virtual int Connect(CompletionCallback* callback);
+  virtual void Disconnect();
+  virtual bool IsConnected() const;
+  virtual bool IsConnectedAndIdle() const;
+
+  // Socket methods:
+  // Multiple outstanding requests are not supported.
+  // Full duplex mode (reading and writing at the same time) is supported
+  virtual int Read(char* buf, int buf_len, CompletionCallback* callback);
+  virtual int Write(const char* buf, int buf_len, CompletionCallback* callback);
+
+  // Identical to posix system call of same name
+  // Needed by ssl_client_socket_nss
+  virtual int GetPeerName(struct sockaddr *name, socklen_t *namelen);
+
+ private:
+  // Called by MessagePumpLibevent when the socket is ready to do I/O
+  void OnFileCanReadWithoutBlocking(int fd);
+  void OnFileCanWriteWithoutBlocking(int fd);
+
+  void DoReadCallback(int rv);
+  void DoWriteCallback(int rv);
+  void DidCompleteRead();
+  void DidCompleteWrite();
+  void DidCompleteConnect();
+
+  int CreateSocket(const struct addrinfo* ai);
+
+  int socket_;
+
+  // The list of addresses we should try in order to establish a connection.
+  AddressList addresses_;
+
+  // Where we are in above list, or NULL if all addrinfos have been tried.
+  const struct addrinfo* current_ai_;
+
+  // Whether we're currently waiting for connect() to complete
+  bool waiting_connect_;
+
+  // The socket's libevent wrapper
+  MessageLoopForIO::FileDescriptorWatcher socket_watcher_;
+
+  // The buffer used by OnSocketReady to retry Read requests
+  char* read_buf_;
+  int read_buf_len_;
+
+  // The buffer used by OnSocketReady to retry Write requests
+  const char* write_buf_;
+  int write_buf_len_;
+
+  // External callback; called when read is complete.
+  CompletionCallback* read_callback_;
+
+  // External callback; called when write is complete.
+  CompletionCallback* write_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(TCPClientSocketLibevent);
+};
+
+}  // namespace net
+
+#endif  // NET_BASE_TCP_CLIENT_SOCKET_LIBEVENT_H_