Add new HttpMultipartFormData, used for parsing a MimeMultipart and extracting either text or binar…

tests/standalone/io/mime_multipart_parser_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 "package:expect/expect.dart";
 import 'dart:async';
 import 'dart:math';
 import 'dart:io';
 import 'dart:isolate';
 
@@ skipping 261 matching lines @@
 --boundar\r
 --bounda\r
 --bound\r
 --boun\r
 --bou\r
 --bo\r
 --b\r\r\r\r
 --\r\r\r
 -\r""";
   testParse(message, "boundary", [headers, headers], [body1, body2]);
-}
 
-void testParseInvalid() {
-  String message;
-
-  // Missing initial CRLF. One body part less.
+  // Without initial CRLF.
   message = """
 --xxx\r
 \r
 \r
 Body 1\r
 --xxx\r
 \r
 \r
 Body2\r
 --xxx--\r\n""";
-  testParse(message, "xxx", null, ["\r\nBody2"]);
+  testParse(message, "xxx", null, ["\r\nBody 1", "\r\nBody2"]);
+}
+
+void testParseInvalid() {
+  String message;
 
   // Missing end boundary.
   message = """
 \r
 --xxx\r
 \r
 \r
 Body 1\r
 --xxx\r
 \r
 \r
 Body2\r
 --xxx\r\n""";
   testParse(message, "xxx", null, [null, null], true);
 }
 
 void main() {
   testParseValid();
   testParseInvalid();
 }