Update Polymer components and re-run reproduce.sh

third_party/polymer/v1_0/components/iron-a11y-keys/iron-a11y-keys.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
 The complete set of authors may be found at http://polymer.github.io/AUTHORS
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS
 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
 -->
 
@@ skipping 69 matching lines @@
 
 
   Polymer({
     is: 'iron-a11y-keys',
 
     behaviors: [
       Polymer.IronA11yKeysBehavior
     ],
 
     properties: {
+      /** @type {?Node} */
       target: {
         type: Object,
         observer: '_targetChanged'
       },
 
       keys: {
         type: String,
         reflectToAttribute: true,
         observer: '_keysChanged'
       }
@@ skipping 12 matching lines @@
     _keysChanged: function() {
       this.removeOwnKeyBindings();
       this.addOwnKeyBinding(this.keys, '_fireKeysPressed');
     },
 
     _fireKeysPressed: function(event) {
       this.fire('keys-pressed', event.detail, {});
     }
   });
 </script>