MD Settings, cleanup: Remove obsolete references to paper-dialog, paper-item.

chrome/browser/resources/settings/bluetooth_page/bluetooth_subpage.js

 // Copyright 2017 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
  * 'settings-bluetooth-subpage' is the settings subpage for managing bluetooth
  *  properties and devices.
  */
 
@@ skipping 80 matching lines @@
      * Reflects the iron-list selecteditem property.
      * @type {!chrome.bluetooth.Device}
      */
     selectedUnpairedItem_: {
       type: Object,
       observer: 'selectedUnpairedItemChanged_',
     },
 
     /**
      * Set to the name of the dialog to show. This page uses a single
-     * paper-dialog to host one of two dialog elements: 'pairDevice' or
+     * dialog to host one of two dialog elements: 'pairDevice' or
      * 'connectError'. This allows a seamless transition between dialogs.
      * Note: This property should be set before opening the dialog and setting
      * the property will not itself cause the dialog to open.
      * @private
      */
     dialogId_: {
       type: String,
       value: '',
     },
 
@@ skipping 355 matching lines @@
   /** @private */
   onDialogClose_: function() {
     this.dialogId_ = '';
     this.pairingDevice_ = undefined;
     // The list is dynamic so focus the first item.
     var device = this.$$('#unpairedContainer bluetooth-device-list-item');
     if (device)
       device.focus();
   },
 });