Rearanged imports of custom Polymer elements in OOBE.

chrome/browser/resources/chromeos/login/oobe_screen_host_pairing.js

 // Copyright 2014 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.
 
 /**
  * @fileoverview host pairing screen implementation.
  */
 
 login.createScreen('HostPairingScreen', 'host-pairing', function() {
   /**
    * We can't pass Polymer screen directly to login.createScreen, because it
    * changes object's prototype chain.
    */
   return {
     polymerScreen_: null,
 
     decorate: function() {
       polymerScreen_ = this.children[0];
       polymerScreen_.decorate(this);
     },
 
     onBeforeShow: function() {
       polymerScreen_.onBeforeShow();
     }
   };
 });
-
-Polymer('host-pairing-screen', (function() {
-  'use strict';
-
-  /** @const */ var CALLBACK_CONTEXT_READY = 'contextReady';
-
-  return {
-    onBeforeShow: function() {
-      Oobe.getInstance().headerHidden = true;
-    },
-
-    /** @override */
-    initialize: function() {
-      this.send(CALLBACK_CONTEXT_READY);
-    }
-  };
-})());
-