Revert "Add new InternetAddress class with a static lookup function (including IPv6 results)."

tests/standalone/io/secure_socket_bad_certificate_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.
 //
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_write --short_socket_read
 // The --short_socket_write option does not work with external server
 // www.google.dk.  Add this to the test when we have secure server sockets.
@@ skipping 13 matching lines @@
                             acceptCertificate: true).then((_) {
                                 keepAlive.close();
       // TODO(7153): Open a receive port, and close it when we get here.
       // Currently, it can happen that neither onClosed or onError is called.
       // So we never reach this point. Diagnose this and fix.
     });
   });
 }
 
 Future testCertificateCallback({String host, bool acceptCertificate}) {
-  try {
-    var x = 7;
-    SecureSocket.connect(host, 443, onBadCertificate: x)
-        .catchError((e) {}, test: (e) => e is ArgumentError);
-  } on TypeError catch (e) {
-  }
+  Expect.throws(
+      () {
+        var x = 7;
+        SecureSocket.connect(host, 443, onBadCertificate: x);
+      },
+      (e) => e is ArgumentError || e is TypeError);
 
   bool badCertificateCallback(X509Certificate certificate) {
     Expect.isTrue(certificate.subject.contains("O=Google Inc"));
     Expect.isTrue(certificate.startValidity.isBefore(new DateTime.now()));
     Expect.isTrue(certificate.endValidity.isAfter(new DateTime.now()));
     return acceptCertificate;
   };
 
   return SecureSocket.connect(host,
                               443,
                               onBadCertificate: badCertificateCallback)
       .then((socket) {
         Expect.isTrue(acceptCertificate);
         socket.write("GET / HTTP/1.0\r\nHost: $host\r\n\r\n");
         socket.close();
         return socket.fold(<int>[], (message, data)  => message..addAll(data))
             .then((message) {
               String received = new String.fromCharCodes(message);
               Expect.isTrue(received.contains('</body></html>'));
             });
       }).catchError((e) {
         Expect.isFalse(acceptCertificate);
       });
 }