LTemplateElement&&HTMLTemplateElement.decorate){HTMLTemplateElement.decorate(this._template);}},_stampTemplate:function(){if(this._template){this.root=this.instanceTemplate(this._template);}},instanceTemplate:function(template){var dom=document.importNode(template._content||template.content,true);return dom;}});(function(){var baseAttachedCallback=Polymer.Base.attachedCallback;var baseDetachedCallback=Polymer.Base.detachedCallback;Polymer.Base._addFeature({_hostStack:[],ready:function(){},_regis...