Move server socket functionality from TCPServerSocket into TCPSocket.

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 e5a0d8deab4cb2b28ded2e6d25fd8b77cfcdb95f..2618b0813d8d4daf54c3271d2c003e65bdce6237 100644
--- a/net/socket/tcp_client_socket_libevent.h
+++ b/net/socket/tcp_client_socket_libevent.h
@@ -33,9 +33,10 @@ class NET_EXPORT_PRIVATE TCPClientSocketLibevent : public StreamSocket,
 
   // 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 used by TCPServerSocket() to adopt accepted connections
-  // and for testing.
+  // the given socket and then acts as if Connect() had been called. On failure,
+  // the given socket is closed.
+  // This function is used by TCPServerSocket to adopt accepted connections and
+  // for testing.
   int AdoptSocket(int socket);
 
   // Binds the socket to a local IP address and port.