Added TCPServerSocket.

net/socket/tcp_client_socket_libevent.h

Index: net/socket/tcp_client_socket_libevent.h
diff --git a/net/socket/tcp_client_socket_libevent.h b/net/socket/tcp_client_socket_libevent.h
index 2d9ea2bdd9eceee14d3da676b7be86eab9919281..796a4a8f81747db5e4326fe368a1a08045f005aa 100644
--- a/net/socket/tcp_client_socket_libevent.h
+++ b/net/socket/tcp_client_socket_libevent.h
@@ -36,7 +36,8 @@ class TCPClientSocketLibevent : public ClientSocket, base::NonThreadSafe {
   // AdoptSocket causes the given, connected socket to be adopted as a TCP
   // socket. This object must not be connected. This object takes ownership of
   // the given socket and then acts as if Connect() had been called. This
-  // function is intended for testing only.
+  // function is used by TCPServerSocket() to adopt accepted connections
+  // and for testing.
   void AdoptSocket(int socket);
 
   // ClientSocket methods: