[Polymer] update third_party polymer

third_party/polymer/v1_0/components-chromium/neon-animation/neon-animated-pages-extracted.js

Index: third_party/polymer/v1_0/components-chromium/neon-animation/neon-animated-pages-extracted.js
diff --git a/third_party/polymer/v1_0/components-chromium/neon-animation/neon-animated-pages-extracted.js b/third_party/polymer/v1_0/components-chromium/neon-animation/neon-animated-pages-extracted.js
index ae4098f04a4d84b02d475ad41a7cdd17d72af1d7..e8dddabe4385c29641617b2cbd8f909908cf3f97 100644
--- a/third_party/polymer/v1_0/components-chromium/neon-animation/neon-animated-pages-extracted.js
+++ b/third_party/polymer/v1_0/components-chromium/neon-animation/neon-animated-pages-extracted.js
@@ -25,19 +25,21 @@
 
     },
 
-    observers: [
-      '_selectedChanged(selected)'
-    ],
-
     listeners: {
+      'iron-select': '_onIronSelect',
       'neon-animation-finish': '_onNeonAnimationFinish'
     },
 
-    _selectedChanged: function(selected) {
+    _onIronSelect: function(event) {
+      var selectedPage = event.detail.item;
 
-      var selectedPage = this.selectedItem;
+      // Only consider child elements.
+      if (this.items.indexOf(selectedPage) < 0) {
+        return;
+      }
+      
       var oldPage = this._valueToItem(this._prevSelected) || false;
-      this._prevSelected = selected;
+      this._prevSelected = this.selected;
 
       // on initial load and if animateInitialSelection is negated, simply display selectedPage.
       if (!oldPage && !this.animateInitialSelection) {