Fix type warnings and remove unimplemented stuff from HttpClient interface.

sdk/lib/io/http_parser.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.
 
 part of dart.io;
 
 // Global constants.
 class _Const {
   // Bytes for "HTTP".
   static const HTTP = const [72, 84, 84, 80];
@@ skipping 191 matching lines @@
   }
 
   _HttpParser._(this._requestParser) {
     _controller = new StreamController<_HttpIncoming>(
           onSubscriptionStateChange: _updateParsePauseState,
           onPauseStateChange: _updateParsePauseState);
     _reset();
   }
 
 
-  StreamSubscription<_HttpIncoming> listen(void onData(List<int> event),
+  StreamSubscription<_HttpIncoming> listen(void onData(_HttpIncoming event),
                                            {void onError(AsyncError error),
                                             void onDone(),
                                             bool unsubscribeOnError}) {
     return _controller.stream.listen(onData,
                                      onError: onError,
                                      onDone: onDone,
                                      unsubscribeOnError: unsubscribeOnError);
   }
 
   Future<_HttpParser> consume(Stream<List<int>> stream) {
@@ skipping 733 matching lines @@
   StreamController<_HttpIncoming> _controller;
   StreamController<List<int>> _bodyController;
 }
 
 
 class HttpParserException implements Exception {
   const HttpParserException([String this.message = ""]);
   String toString() => "HttpParserException: $message";
   final String message;
 }