[MD Extensions] Update polymer properties ordering

chrome/browser/resources/md_extensions/shortcut_input.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('extensions', function() {
   'use strict';
 
   // The UI to display and manage keyboard shortcuts set for extension commands.
   var ShortcutInput = Polymer({
     is: 'extensions-shortcut-input',
 
+    behaviors: [I18nBehavior],
+
     properties: {
       item: {
         type: String,
         value: '',
       },
       commandName: {
         type: String,
         value: '',
       },
       shortcut: {
         type: String,
         value: '',
       },
       /** @private */
       capturing_: {
         type: Boolean,
         value: false,
       },
       /** @private */
       pendingShortcut_: {
         type: String,
         value: '',
       },
     },
 
-    behaviors: [I18nBehavior],
-
     ready: function() {
       var node = this.$['input'];
       node.addEventListener('mouseup', this.startCapture_.bind(this));
       node.addEventListener('blur', this.endCapture_.bind(this));
       node.addEventListener('focus', this.startCapture_.bind(this));
       node.addEventListener('keydown', this.onKeyDown_.bind(this));
       node.addEventListener('keyup', this.onKeyUp_.bind(this));
     },
 
     /** @private */
@@ skipping 101 matching lines @@
     onClearTap_: function() {
       if (this.shortcut) {
         this.pendingShortcut_ = '';
         this.commitPending_();
       }
     },
   });
 
   return {ShortcutInput: ShortcutInput};
 });