Forgot this test in the previous change list.

tests/vm/dart/isolate_unhandled_exception_uri_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 isolate_unhandled_exception_uri_helper;
+
 import 'dart:isolate';
 import 'dart:io';
 
 // Tests that isolate code in another script keeps message handling working
 // after throwing an unhandled exception, if it has a function called
 // unhandledExceptionCallback that returns true (continue handling).
 
 // Note: this test will hang if an uncaught exception isn't handled,
 // either by an error in the callback or it returning false.
 
@@ skipping 16 matching lines @@
       print('unhandled exception: ${future.exception}');
       exit(1);
     }
     if (future.value != 'hello') {
       print('unexpected response: ${future.value}');
       exit(1);
     }
     exit(0);
   });
 }