Update Polymer components.

third_party/polymer/components/neon-animation/demo/tiles/circles-page.html

 <!--
 @license
 Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
 Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
 -->
 <link rel="import" href="../../../polymer/polymer.html">
@@ skipping 64 matching lines @@
           };
         }
       }
     },
 
     listeners: {
       'click': '_onClick'
     },
 
     _onClick: function(event) {
-      var target = event.target;
+      var target = Polymer.dom(event).rootTarget;
       if (target.classList.contains('circle')) {
         // configure the page animation
         this.sharedElements = {
           'hero': target
         };
 
         var nodesToScale = [];
         var circles = Polymer.dom(this.root).querySelectorAll('.circle');
         for (var node, index = 0; node = circles[index]; index++) {
           if (node !== event.target) {
             nodesToScale.push(node);
           }
         }
         this.animationConfig['exit'][1].nodes = nodesToScale;
 
         this.fire('circle-click');
       }
     }
 
   });
 
 </script>