First cut at behaviors. This just implements the lifecycle methodsportion. We may get the rest for …

lib/src/js/polymer_base_dart.html

+<!--
+Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file

[Siggi Cherem (dart-lang), 2015/08/13 18:52:41]

2015

[jakemac, 2015/08/13 19:14:29]

Done.

+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.
+-->
 <script>
   (function() {
     Polymer.Base.originalPolymerCreatedCallback =
         Polymer.Base.createdCallback;
     Polymer.Base.createdCallback = function() {
       if (this.__isPolymerDart__) return;
       this.originalPolymerCreatedCallback();
     };
 
     // Store serialize/deserialize to retain the original behavior when the
@@ skipping 29 matching lines @@
         // recognize.
         var args = [];
         for (var i = 0; i < arguments.length; i++) {
           args[i] = arguments[i];
         }
         return dartFunction(thisArg, args);
       }
     };
   })();
 </script>