MD Settings: Convert all usages of .bind(this) to use ES6 arrow function.

chrome/browser/resources/settings/internet_page/network_apnlist.js

 // Copyright 2015 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 Polymer element for displaying and modifying a list of cellular
  * access points.
  */
 Polymer({
   is: 'network-apnlist',
@@ skipping 122 matching lines @@
         otherApn.AccessPointName || this.DefaultAccessPointName;
 
     // Save the 'other' properties.
     this.otherApn_ = otherApn;
 
     // Append 'other' to the end of the list of APNs.
     result.push(otherApn);
 
     this.apnSelectList_ = result;
     // Set selectedApn_ after dom-repeat has been stamped.
-    this.async(function() {
+    this.async(() => {
       this.selectedApn_ =
           (activeApn && activeApn.AccessPointName) || otherApn.AccessPointName;
-    }.bind(this));
+    });
   },
 
   /**
    * @param {!CrOnc.APNProperties|undefined=} apnProperties
    * @return {!CrOnc.APNProperties} A new APN object with properties from
    *     |apnProperties| if provided.
    * @private
    */
   createApnObject_: function(apnProperties) {
     var newApn = {AccessPointName: ''};
@@ skipping 103 matching lines @@
    * @return {CrOnc.APNProperties|undefined} The entry in |apnList| matching
    *     |accessPointName| if it exists, or undefined.
    * @private
    */
   findApnInList: function(apnList, accessPointName) {
     return apnList.find(function(a) {
       return a.AccessPointName == accessPointName;
     });
   }
 });