md settings: Show lock screen when pin/fingerprint disabled.

chrome/browser/resources/settings/people_page/people_page.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
  * 'settings-people-page' is the settings page containing sign-in settings.
  */
 Polymer({
   is: 'settings-people-page',
@@ skipping 60 matching lines @@
       type: Boolean,
       value: false,
     },
 // </if>
 
     /** @private */
     showDisconnectDialog_: Boolean,
 
 // <if expr="chromeos">
     /**
-     * True if quick unlock settings should be displayed on this machine.
+     * True if fingerprint settings should be displayed on this machine.
      * @private
      */
-    quickUnlockEnabled_: {
+    fingerprintUnlockEnabled_: {
       type: Boolean,
       value: function() {
-        return loadTimeData.getBoolean('pinUnlockEnabled') ||
-            loadTimeData.getBoolean('fingerprintUnlockEnabled');
+        return loadTimeData.getBoolean('fingerprintUnlockEnabled');
       },
       readOnly: true,
     },
 // </if>
 
     /** @private {!Map<string, string>} */
     focusConfig_: {
       type: Object,
       value: function() {
         var map = new Map();
@@ skipping 347 matching lines @@
 
   /**
    * @param {!settings.SyncStatus} syncStatus
    * @return {boolean} Whether to show the "Sign in to Chrome" button.
    * @private
    */
   showSignin_: function(syncStatus) {
     return !!syncStatus.signinAllowed && !syncStatus.signedIn;
   },
 });