SDK fixes

test/generated_sdk/lib/isolate/isolate.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.
 
 /**
  * Concurrent programming using _isolates_:
  * independent workers that are similar to threads
  * but don't share memory,
  * communicating only via messages.
  */
@@ skipping 204 matching lines @@
    * WARNING: The `pause` parameter is not implemented on all platforms yet.
    *
    * Returns a future that will complete with an [Isolate] instance if the
    * spawning succeeded. It will complete with an error otherwise.
    */
   static Future<Isolate> spawnUri(
       Uri uri, List<String> args, var message, { bool paused: false,
                                                  Uri packageRoot }) {
     if (packageRoot != null) throw new UnimplementedError("packageRoot");
     try {
-      if (args is List<String>) {
+      if (args is List) {
         for (int i = 0; i < args.length; i++) {
           if (args[i] is! String) {
             throw new ArgumentError("Args must be a list of Strings $args");
           }
         }
       } else if (args != null) {
         throw new ArgumentError("Args must be a list of Strings $args");
       }
       return IsolateNatives.spawnUri(uri, args, message, paused)
           .then((msg) => new Isolate(msg[1],
@@ skipping 458 matching lines @@
       : _description = description,
         stackTrace = new _RemoteStackTrace(stackDescription);
   String toString() => _description;
 }
 
 class _RemoteStackTrace implements StackTrace {
   String _trace;
   _RemoteStackTrace(this._trace);
   String toString() => _trace;
 }