Run bower update

third_party/polymer/components/neon-animation/animations/cascaded-animation.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
 -->
 
@@ skipping 50 matching lines @@
         config.timing.delay += nodeDelay;
         config.node = node;
 
         var animation = document.createElement(config.animation);
         if (animation.isNeonAnimation) {
           var effect = animation.configure(config);
 
           this._animations.push(animation);
           effects.push(effect);
         } else {
-          Polymer.Base._warn(this.is + ':', config.animation, 'not found!');
+          console.warn(this.is + ':', config.animation, 'not found!');
           abortedConfigure = true;
           break;
         }
       }
       config.timing.delay = oldDelay;
       config.node = null;
       // if a bad animation was configured, abort config.
       if (abortedConfigure) {
         return;
       }
 
       this._effect = new GroupEffect(effects);
       return this._effect;
     },
 
     complete: function() {
       for (var animation, index = 0; animation = this._animations[index]; index++) {
         animation.complete(animation.config);
       }
     }
 
   });
 
 </script>