Change the signature for all network bind calls.

tests/standalone/io/socket_ipv6_test.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:io';
 import 'dart:isolate';
 
 const ANY = InternetAddressType.ANY;
 
 void testIPv6toIPv6() {
   InternetAddress.lookup("::0", type: ANY).then((serverAddr) {
     InternetAddress.lookup("::1", type: ANY).then((clientAddr) {
-      ServerSocket.bind(serverAddr.first).then((server) {
+        ServerSocket.bind(serverAddr.first, 0).then((server) {
         server.listen((socket) {
           socket.destroy();
           server.close();
         });
         Socket.connect(clientAddr.first, server.port).then((socket) {
           socket.destroy();
         });
       });
     });
   });
 }
 
 void testIPv4toIPv6() {
   InternetAddress.lookup("::0", type: ANY).then((serverAddr) {
-    ServerSocket.bind(serverAddr.first).then((server) {
+      ServerSocket.bind(serverAddr.first, 0).then((server) {
       server.listen((socket) {
         socket.destroy();
         server.close();
       });
       Socket.connect("127.0.0.1", server.port).then((socket) {
         socket.destroy();
       });
     });
   });
 }
 
 void testIPv6toIPv4() {
   InternetAddress.lookup("::1", type: ANY).then((clientAddr) {
-    ServerSocket.bind("127.0.0.1").then((server) {
+      ServerSocket.bind("127.0.0.1", 0).then((server) {
       server.listen((socket) {
         throw "Unexpected socket";
       });
       Socket.connect(clientAddr.first, server.port).catchError((e) {
         server.close();
       });
     });
   });
 }
 
 void testIPv4toIPv4() {
-  ServerSocket.bind("127.0.0.1").then((server) {
+  ServerSocket.bind("127.0.0.1", 0).then((server) {
     server.listen((socket) {
       socket.destroy();
       server.close();
     });
     Socket.connect("127.0.0.1", server.port).then((socket) {
       socket.destroy();
     });
   });
 }
 
@@ skipping 24 matching lines @@
 }
 
 void main() {
   testIPv6toIPv6();
   testIPv4toIPv6();
   testIPv6toIPv4();
   testIPv4toIPv4();
   testIPv6Lookup();
   testIPv4Lookup();
 }