Rip out the last dart:io dependency from pkg/http.

pkg/http/test/io/streamed_request_test.dart

Index: pkg/http/test/io/streamed_request_test.dart
diff --git a/pkg/http/test/streamed_request_test.dart b/pkg/http/test/io/streamed_request_test.dart
similarity index 73%
copy from pkg/http/test/streamed_request_test.dart
copy to pkg/http/test/io/streamed_request_test.dart
index c9e3689dc372fc6d9cb1ca76e9812c027627d04e..ef823f99e24c6c2104213579748f3b8a217c330f 100644
--- a/pkg/http/test/streamed_request_test.dart
+++ b/pkg/http/test/io/streamed_request_test.dart
@@ -1,8 +1,8 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, 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;
+library http.test.io.streamed_request_test;
 
 import 'dart:convert';
 
@@ -13,16 +13,6 @@ import 'utils.dart';
 
 void main() {
   group('contentLength', () {
-    test('defaults to null', () {
-      var request = new http.StreamedRequest('POST', dummyUrl);
-      expect(request.contentLength, isNull);
-    });
-
-    test('disallows negative values', () {
-      var request = new http.StreamedRequest('POST', dummyUrl);
-      expect(() => request.contentLength = -1, throwsArgumentError);
-    });
-
     test('controls the Content-Length header', () {
       return startServer().then((_) {
         var request = new http.StreamedRequest('POST', serverUrl);
@@ -51,12 +41,6 @@ void main() {
                 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.