HTTP loading tests and package root support

tests/standalone/http_launch_data/http_spawn_main.dart

Index: tests/standalone/http_launch_data/http_spawn_main.dart
diff --git a/tests/standalone/package/sibling_isolate.dart b/tests/standalone/http_launch_data/http_spawn_main.dart
similarity index 51%
copy from tests/standalone/package/sibling_isolate.dart
copy to tests/standalone/http_launch_data/http_spawn_main.dart
index 14b400dc90034442c9741afbe0161b70ba32b8d4..c91a193c12b3dcb896d758630739b9c4e13abffb 100644
--- a/tests/standalone/package/sibling_isolate.dart
+++ b/tests/standalone/http_launch_data/http_spawn_main.dart
@@ -1,17 +1,17 @@
-
 // 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 sibling_isolate;
+library http_lanuch_main;
 
-import 'package:shared.dart'as shared;
 import 'dart:isolate';
+import 'dart:io';
 
-// This file is spawned from package_isolate_test.dart
 main() {
-  shared.output = 'isolate';
-  port.receive((msg, replyTo) {
-    replyTo.send(shared.output);
+  int port = int.parse(new Options().arguments[0]);
+  SendPort spawnedPort = spawnUri('http://127.0.0.1:$port/http_isolate_main.dart');
+  spawnedPort.call('hello').then((response) {
+    print(response);
   });
 }
+