MD Settings: Certificates: Hide 'import and bind' in guest mode

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',
 
   properties: {
     /** @type {!Array<!Certificate>} */
     certificates: {
       type: Array,
       value: function() { return []; },
     },
 
     /** @type {!CertificateType} */
     certificateType: String,
+
+// <if expr="chromeos">
+    /** @private */
+    isGuest_: {
+      type: Boolean,
+      value: function() {
+        return loadTimeData.getBoolean('isGuest');
+      }
+    },
+// </if>
   },
 
   behaviors: [I18nBehavior],
 
   /**
    * @return {string}
    * @private
    */
   getDescription_: function() {
     if (this.certificates.length == 0)
@@ skipping 20 matching lines @@
   canImport_: function() {
     return this.certificateType != CertificateType.OTHER;
   },
 
 // <if expr="chromeos">
   /**
    * @return {boolean}
    * @private
    */
   canImportAndBind_: function() {
-    return this.certificateType == CertificateType.PERSONAL;
+    return !this.isGuest_ && this.certificateType == CertificateType.PERSONAL;

[dpapad, 2017/05/04 23:35:40]

Optional: If you think this functionality is important, I suggest adding a test
at the corresponding test suite, at 

https://cs.chromium.org/chromium/src/chrome/test/data/webui/settings/certific....

[stevenjb, 2017/05/08 16:44:43]

We don't currently have any "guest mode" tests that I am aware of, but we
probably should. I don't think we should necessarily do this in individual page
tests (but maybe we should). Filed crbug.com/719562 to track this.

   },
 // </if>
 
   /**
    * Handles a rejected Promise returned from |browserProxy_|.
    * @param {!HTMLElement} anchor
    * @param {*} error Expects {!CertificatesError|!CertificatesImportError}.
    * @private
    */
   onRejected_: function(anchor, error) {
@@ skipping 66 matching lines @@
           }.bind(this),
           this.onRejected_.bind(this, anchor));
     } else if (this.certificateType == CertificateType.SERVER) {
       browserProxy.importServerCertificate().catch(
           this.onRejected_.bind(this, anchor));
     } else {
       assertNotReached();
     }
   },
 });