Work-around for Issue 1005 part (1)

client/dom/scripts/template_wrapping_dom.js

 // Copyright (c) 2011, 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.
 
 // DO NOT EDIT
 // Auto-generated Dart DOM implementation.
 
 $!CODE
 
 function __dom_native_TimeoutHander_method(_this, callback, timeout, operation) {
@@ skipping 191 matching lines @@
 var __dom_get_class = __dom_get_class_generic;
 if (typeof window !== 'undefined' &&  // webworkers don't have a window
     window.constructor.name == "DOMWindow") {
   __dom_get_class = __dom_get_class_chrome;
 }
 
 function __dom_get_cached(hashtablename, obj, isolatetoken) {
   if (!obj.hasOwnProperty(hashtablename)) return (void 0);
   var hashtable = obj[hashtablename];
   var hash = isolatetoken.hashCode;
+  // Issue 1005 part (1), may be undefined in CSSStyleDeclaration.
+  hashtable = hashtable || {};
   while (true) {
     var result = hashtable[hash];
     if (result) {
       if (result.$token === isolatetoken) {
         return result;
       } else {
         hash++;
       }
     } else {
       return (void 0);
     }
   }
 }
 
 function __dom_set_cached(hashtablename, obj, isolatetoken, value) {
   var hashtable;
   if (!obj.hasOwnProperty(hashtablename)) {
     hashtable = {};
     obj[hashtablename] = hashtable;
   } else {
     hashtable = obj[hashtablename];
+    if (!hashtable) obj[hashtablename] = hashtable = {};  // Issue 1005 part (1)
   }
   var hash = isolatetoken.hashCode;
   while (true) {
     var entry = hashtable[hash];
     if (entry) {
       if (entry.$token === isolatetoken) {
         throw "Wrapper already exists for this object: " + obj;
       } else {
         hash++;
       }
@@ skipping 90 matching lines @@
 function native__NativeDomGlobalProperties_getWindow() {
   // TODO: Should the window be obtained from an isolate?
   return __dom_wrap(window);
 }
 
 // Declared in src/GlobalProperties.dart
 function native__NativeDomGlobalProperties_getDocument() {
   // TODO: Should the window be obtained from an isolate?
   return __dom_wrap(window.document);
 }