Clean up dart:io exceptions.

tests/standalone/io/http_client_connect_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_read --short_socket_write
 
 import "package:expect/expect.dart";
@@ skipping 58 matching lines @@
     });
 
     var port = new ReceivePort();
     var client = new HttpClient();
     client.get("127.0.0.1", server.port, "/")
       .then((request) => request.close())
       .then((response) {
         Expect.fail("Request not expected");
       })
         .catchError((error) => port.close(),
-                    test: (error) => error is HttpParserException);
+                    test: (error) => error is HttpException);
   });
 }
 
 void testGetDataServerClose() {
   var completer = new Completer();
   HttpServer.bind("127.0.0.1", 0).then((server) {
     server.listen((request) {
       request.response.contentLength = 100;
       request.response.write("data");
       request.response.write("more data");
@@ skipping 36 matching lines @@
 
 
 void main() {
   testGetEmptyRequest();
   testGetDataRequest();
   testGetInvalidHost();
   testGetServerClose();
   testGetDataServerClose();
   testPostEmptyRequest();
 }