IE9 dom fixes: Add check for __proto__ before using it and add some name workarounds.

client/dom/generated/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.
 
 
 function native__AbstractWorkerWrappingImplementation__get__AbstractWorker_onerror(_this) {
   try {
@@ skipping 26662 matching lines @@
   "XMLSerializer": native__XMLSerializerWrappingImplementation_create__XMLSerializerWrappingImplementation,
   "XPathEvaluator": native__XPathEvaluatorWrappingImplementation_create__XPathEvaluatorWrappingImplementation,
   "XPathException": native__XPathExceptionWrappingImplementation_create__XPathExceptionWrappingImplementation,
   "XPathExpression": native__XPathExpressionWrappingImplementation_create__XPathExpressionWrappingImplementation,
   "XPathNSResolver": native__XPathNSResolverWrappingImplementation_create__XPathNSResolverWrappingImplementation,
   "XPathResult": native__XPathResultWrappingImplementation_create__XPathResultWrappingImplementation,
   "XSLTProcessor": native__XSLTProcessorWrappingImplementation_create__XSLTProcessorWrappingImplementation,
 
   // Patches for non-WebKit browsers
   'Window': native__DOMWindowWrappingImplementation_create__DOMWindowWrappingImplementation,
-  'global': native__DOMWindowWrappingImplementation_create__DOMWindowWrappingImplementation
+  'global': native__DOMWindowWrappingImplementation_create__DOMWindowWrappingImplementation,
+  'KeyEvent': native__KeyboardEventWrappingImplementation_create__KeyboardEventWrappingImplementation, // Opera
+  'HTMLPhraseElement': native__HTMLElementWrappingImplementation_create__HTMLElementWrappingImplementation, // IE9
+  'MSStyleCSSProperties': native__CSSStyleDeclarationWrappingImplementation_create__CSSStyleDeclarationWrappingImplementation // IE9
 };
 
 function __dom_get_class_chrome(ptr) {
   return __dom_type_map[ptr.constructor.name];
 }
 
 function __dom_get_class_generic(ptr) {
-  var isolatetoken = __dom_isolate_token();
-  var result = __dom_get_cached('dart_class', ptr.__proto__, isolatetoken);
-  if (result) {
-    return result;
-  }
   var str = Object.prototype.toString.call(ptr);
   var name = str.substring(8, str.length - 1);
   var cls = __dom_type_map[name];
-  __dom_set_cached('dart_class', ptr.__proto__, isolatetoken, cls);
   return cls;
 }
 
+if (Object.__proto__) {
+  __dom_get_class_generic = function(ptr) {
+    var isolatetoken = __dom_isolate_token();
+    var result = __dom_get_cached('dart_class', ptr.__proto__, isolatetoken);
+    if (result) {
+      return result;
+    }
+    var str = Object.prototype.toString.call(ptr);
+    var name = str.substring(8, str.length - 1);
+    var cls = __dom_type_map[name];
+    __dom_set_cached('dart_class', ptr.__proto__, isolatetoken, cls);
+    return cls;
+  }
+}
+
 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;
@@ skipping 112 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);
 }