Fix a bug in [http.BaseRequest.send]'s content length handling.

pkg/http/test/streamed_request_test.dart

 // Copyright (c) 2012, 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.
 
 library streamed_request_test;
 
 import 'dart:convert';
 
 import 'package:http/http.dart' as http;
 import 'package:unittest/unittest.dart';
@@ skipping 40 matching lines @@
                 isNot(contains('content-length'))))));
       }).whenComplete(stopServer);
     });
 
     test('is frozen by finalize()', () {
       var request = new http.StreamedRequest('POST', dummyUrl);
       request.finalize();
       expect(() => request.contentLength = 10, throwsStateError);
     });
   });
+
+  // Regression test.
+  test('.send() with a response with no content length', () {
+    return startServer().then((_) {
+      var request = new http.StreamedRequest(
+          'GET', serverUrl.resolve('/no-content-length'));
+      request.sink.close();
+      return request.send();
+    }).then((response) {
+      expect(UTF8.decodeStream(response.stream), completion(equals('body')));
+    }).whenComplete(stopServer);
+  });
+
 }