fixes to polymer, gets tests back to a stable state

pkg/polymer/lib/src/declaration.dart

 // Copyright (c) 2013, 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.
 
 part of polymer;
 
 /**
  * **Warning**: this class is experiental and subject to change.
  *
  * The implementation for the `polymer-element` element.
@@ skipping 461 matching lines @@
    * above Polymer.
    */
   // TODO(sjmiles): perf: reflection is slow, relatively speaking
   // If an element may take 6us to create, getCustomPropertyNames might
   // cost 1.6us more.
   void inferObservers(ClassMirror cls) {
     for (var method in cls.methods.values) {
       if (method.isStatic || !method.isRegularMethod) continue;
 
       String name = MirrorSystem.getName(method.simpleName);
-      if (name.endsWith('Changed')) {
+      if (name.endsWith(_OBSERVE_SUFFIX) && name != 'attributeChanged') {
         if (_observe == null) _observe = {};
         name = name.substring(0, name.length - 7);
         _observe[name] = method.simpleName;
       }
     }
   }
 
   void publishProperties(Type type) {
     // Dart note: _publish was already populated by publishAttributes
     if (_publish != null) _publishLC = _lowerCaseMap(_publish);
@@ skipping 138 matching lines @@
   var attr = style.attributes[_STYLE_SCOPE_ATTRIBUTE];
   if (attr != null) {
     clone.attributes[_STYLE_SCOPE_ATTRIBUTE] = attr;
   }
 
   scope.append(clone);
 }
 
 String _cssTextFromSheet(Element sheet) {
   if (sheet == null || js.context == null) return '';
-  var resource = new JsObject.fromBrowserObject(sheet)['__resource'];
+  var resource = new js.JsObject.fromBrowserObject(sheet)['__resource'];
   return resource != null ? resource : '';
 }
 
 const _OBSERVE_SUFFIX = 'Changed';
 
 // TODO(jmesserly): is this list complete?
 final _eventTranslations = const {
   // TODO(jmesserly): these three Polymer.js translations won't work in Dart,
   // because we strip the webkit prefix (below). Reconcile.
   'webkitanimationstart': 'webkitAnimationStart',
@@ skipping 25 matching lines @@
   return map;
 }();
 
 // Dart note: we need this function because we have additional renames JS does
 // not have. The JS renames are simply case differences, whereas we have ones
 // like doubleclick -> dblclick and stripping the webkit prefix.
 String _eventNameFromType(String eventType) {
   final result = _reverseEventTranslations[eventType];
   return result != null ? result : eventType;
 }