s);this._distributeParent();},_distributeParent:function(){if(!useShadow){this.domApi._maybeDistributeParent();}},contains:function(){return this.node.classList.contains.apply(this.node.classList,arguments);}};}());(function(){'use strict';var DomApi=Polymer.DomApi.ctor;var Settings=Polymer.Settings;DomApi.EffectiveNodesObserver=function(domApi){this.domApi=domApi;this.node=this.domApi.node;this._listeners=[];};DomApi.EffectiveNodesObserver.prototype={addListener:function(callback){if(!this._isS...