Fix bug in array serialization

client/dart.js

 // 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.
 
 // Bootstrap support for Dart scripts on the page as this script.
 if (navigator.webkitStartDart) {
   if (!navigator.webkitStartDart()) {
     document.body.innerHTML = 'This build has expired.  Please download a new Dartium at http://www.dartlang.org/dartium/index.html';
   }
 } else {
@@ skipping 105 matching lines @@
       case 'dart':
         var isolateId = x[2];
         var portId = x[3];
         return new DartSendPortSync(isolateId, portId);
       default:
         throw 'Illegal SendPortSync type: $tag';
     }
   }
 
   function deserializeList(x) {
-    var length = x[1];
     var values = x[2];
+    var length = values.length;
     var result = new Array(length);
     for (var i = 0; i < length; i++) {
       result[i] = deserializeHelper(values[i]);
     }
     return result;
   }
 
   window.registerPort = function(name, port) {
     var stringified = JSON.stringify(serialize(port));
     window.localStorage['dart-port:' + name] = stringified;
@@ skipping 71 matching lines @@
     var result = null;
     var listener = function (e) {
       result = JSON.parse(e.data);
     };
     window.addEventListener(source, listener, false);
     dispatchEvent(target, [source, serialized]);
     window.removeEventListener(source, listener, false);
     return deserialize(result);
   }
 })();