Roll Polymer to 1.9.1.

third_party/polymer/v1_0/components-chromium/polymer/polymer-micro-extracted.js

 (function () {
 function resolve() {
 document.body.removeAttribute('unresolved');
 }
 if (window.WebComponents) {
 addEventListener('WebComponentsReady', resolve);
 } else {
 if (document.readyState === 'interactive' || document.readyState === 'complete') {
 resolve();
 } else {
@@ skipping 764 matching lines @@
 try {
 return JSON.stringify(value);
 } catch (x) {
 return '';
 }
 }
 default:
 return value != null ? value : undefined;
 }
 }
-});Polymer.version = "1.8.1";Polymer.Base._addFeature({
+});Polymer.version = "1.9.1";Polymer.Base._addFeature({
 _registerFeatures: function () {
 this._prepIs();
 this._prepBehaviors();
 this._prepConstructor();
 this._prepPropertyInfo();
 },
 _prepBehavior: function (b) {
 this._addHostAttributes(b.hostAttributes);
 },
 _marshalBehavior: function (b) {
 },
 _initFeatures: function () {
 this._marshalHostAttributes();
 this._marshalBehaviors();
 }
 });