adjust location of URI helper files for spawn_uri tests in the browser.

tests/isolate/spawn_uri_nested_vm_test.dart

Index: tests/isolate/spawn_uri_nested_vm_test.dart
diff --git a/tests/isolate/spawn_uri_nested_vm_test.dart b/tests/isolate/spawn_uri_nested_vm_test.dart
index e29278912c77de5fa73fcba4530ff54775892c37..e48483edd3ab3f698a1b77a682b5d25ed96a7c10 100644
--- a/tests/isolate/spawn_uri_nested_vm_test.dart
+++ b/tests/isolate/spawn_uri_nested_vm_test.dart
@@ -5,7 +5,7 @@
 // Example of nested spawning of isolates from a URI
 // Note: the following comment is used by test.dart to additionally compile the
 // other isolate's code.
-// OtherScripts=spawn_uri_nested_child1_vm_isolate.dart, spawn_uri_nested_child2_vm_isolate.dart
+// OtherScripts=spawn_uri_nested_child1_vm_isolate.dart spawn_uri_nested_child2_vm_isolate.dart
 library NestedSpawnUriLibrary;
 import 'dart:isolate';
 import '../../pkg/unittest/lib/unittest.dart';
@@ -13,7 +13,7 @@ import '../../pkg/unittest/lib/unittest.dart';
 main() {
   test('isolate fromUri - nested send and reply', () {
     var port = spawnUri('spawn_uri_nested_child1_vm_isolate.dart');
-  
+
     port.call([1, 2]).then((result) => print(result));
   });
 }