Reimplements net::AddressList without struct addrinfo.

net/socket/tcp_client_socket_win.h

Index: net/socket/tcp_client_socket_win.h
diff --git a/net/socket/tcp_client_socket_win.h b/net/socket/tcp_client_socket_win.h
index 9fffab82b808bdd4f978631b419e7a4660d44dda..c17a0b979f0b07bc608297c7870363ef8b0e51eb 100644
--- a/net/socket/tcp_client_socket_win.h
+++ b/net/socket/tcp_client_socket_win.h
@@ -84,7 +84,7 @@ class NET_EXPORT TCPClientSocketWin : public StreamSocket,
   int DoConnectComplete(int result);
 
   // Helper used by Disconnect(), which disconnects minus the logging and
-  // resetting of current_ai_.
+  // resetting of current_address_index_.
   void DoDisconnect();
 
   // Returns true if a Connect() is in progress.
@@ -113,8 +113,8 @@ class NET_EXPORT TCPClientSocketWin : public StreamSocket,
   // 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_;
+  // Where we are in above list. Set to -1 if uninitialized.
+  int current_address_index_;
 
   // The various states that the socket could be in.
   bool waiting_read_;