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

chrome/browser/resources/settings/certificate_manager_page/certificate_list.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.
 
 /**
  * @fileoverview 'settings-certificate-list' is an element that displays a list
  * of certificates.
  */
 Polymer({
   is: 'settings-certificate-list',
@@ skipping 120 matching lines @@
 
   /**
    * @param {boolean} useHardwareBacked
    * @param {!HTMLElement} anchor
    * @private
    */
   handleImport_: function(useHardwareBacked, anchor) {
     var browserProxy = settings.CertificatesBrowserProxyImpl.getInstance();
     if (this.certificateType == CertificateType.PERSONAL) {
       browserProxy.importPersonalCertificate(useHardwareBacked)
-          .then(function(showPasswordPrompt) {
+          .then(showPasswordPrompt => {
             if (showPasswordPrompt)
               this.dispatchImportActionEvent_(null, anchor);
-          }.bind(this), this.onRejected_.bind(this, anchor));
+          }, this.onRejected_.bind(this, anchor));
     } else if (this.certificateType == CertificateType.CA) {
-      browserProxy.importCaCertificate().then(function(certificateName) {
+      browserProxy.importCaCertificate().then(certificateName => {
         this.dispatchImportActionEvent_({name: certificateName}, anchor);
-      }.bind(this), this.onRejected_.bind(this, anchor));
+      }, this.onRejected_.bind(this, anchor));
     } else if (this.certificateType == CertificateType.SERVER) {
       browserProxy.importServerCertificate().catch(
           this.onRejected_.bind(this, anchor));
     } else {
       assertNotReached();
     }
   },
 });