cros: Showing pin on lock is no longer associated with sending user list.

ui/login/account_picker/screen_account_picker.js

 // Copyright 2014 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 Account picker screen implementation.
  */
 
 login.createScreen('AccountPickerScreen', 'account-picker', function() {
   /**
@@ skipping 19 matching lines @@
       'showAppError',
       'updateUserImage',
       'setCapsLockState',
       'forceLockedUserPodFocus',
       'removeUser',
       'showBannerMessage',
       'showUserPodCustomIcon',
       'hideUserPodCustomIcon',
       'setUserPodFingerprintIcon',
       'removeUserPodFingerprintIcon',
-      'disablePinKeyboardForUser',
+      'setPinEnabledForUser',
       'setAuthType',
       'setTouchViewState',
       'setPublicSessionDisplayName',
       'setPublicSessionLocales',
       'setPublicSessionKeyboardLayouts',
     ],
 
     preferredWidth_: 0,
     preferredHeight_: 0,
 
@@ skipping 208 matching lines @@
                                             error,
                                             BUBBLE_OFFSET,
                                             bubblePositioningPadding, true);
         };
         activatedPod.addEventListener("transitionend",
                                       showBubbleCallback);
         ensureTransitionEndEvent(activatedPod);
       }
     },
 
-    /**
-     * Loads the PIN keyboard if any of the users can login with a PIN. Disables
-     * the PIN keyboard for users who are not allowed to use PIN unlock.
-     * @param {array} users Array of user instances.
-     */
-    initializePinKeyboardStateForUsers_: function(users) {
-      // It is possible that the PIN keyboard HTML has already been loaded. If
-      // that is the case, we want to show the user pods with the PIN keyboard
-      // immediately without running the PIN show/hide effect.
-      document.body.classList.add('disable-pin-animation');
-      setTimeout(function() {
-        document.body.classList.remove('disable-pin-animation');
-      });
-
-      for (var i = 0; i < users.length; ++i) {
-        var user = users[i];
-        if (user.showPin) {
-          showPinKeyboardAsync();
-        } else {
-          // Disable pin for users who cannot authenticate with PIN. For
-          // example, users who have not set up PIN or users who have not
-          // entered their account recently. Otherwise, the PIN keyboard will
-          // will appear for any user if there is at least one user who has PIN
-          // enabled.
-          this.disablePinKeyboardForUser(user.username);
-        }
-      }
-    },
-
-    /**
+   /**
      * Loads given users in pod row.
      * @param {array} users Array of user.
      * @param {boolean} showGuest Whether to show guest session button.
      */
     loadUsers: function(users, showGuest) {
       $('pod-row').loadPods(users);
       $('login-header-bar').showGuestButton = showGuest;
       // On Desktop, #login-header-bar has a shadow if there are 8+ profiles.
       if (Oobe.getInstance().displayType == DISPLAY_TYPE.DESKTOP_USER_MANAGER)
         $('login-header-bar').classList.toggle('shadow', users.length > 8);
-
-      this.initializePinKeyboardStateForUsers_(users);
     },
 
     /**
      * Runs app with a given id from the list of loaded apps.
      * @param {!string} app_id of an app to run.
      * @param {boolean=} opt_diagnostic_mode Whether to run the app in
      *     diagnostic mode.  Default is false.
      */
     runAppForTesting: function(app_id, opt_diagnostic_mode) {
       $('pod-row').findAndRunAppForTesting(app_id, opt_diagnostic_mode);
@@ skipping 129 matching lines @@
 
     /**
      * Sets the state of touch view mode.
      * @param {boolean} isTouchViewEnabled true if the mode is on.
      */
     setTouchViewState: function(isTouchViewEnabled) {
       $('pod-row').setTouchViewState(isTouchViewEnabled);
     },
 
     /**
-     * Removes the PIN keyboard so the user can no longer enter a PIN.
-     * @param {!user} user The user who can no longer enter a PIN.
+     * Enables or disables the pin keyboard for the given user. This may change
+     * pin keyboard visibility.
+     * @param {!string} user
+     * @param {boolean} enabled
      */
-    disablePinKeyboardForUser: function(user) {
-      $('pod-row').removePinKeyboard(user);
+    setPinEnabledForUser: function(user, enabled) {
+      $('pod-row').setPinEnabled(user, enabled);
     },
 
     /**
      * Updates the display name shown on a public session pod.
      * @param {string} userID The user ID of the public session
      * @param {string} displayName The new display name
      */
     setPublicSessionDisplayName: function(userID, displayName) {
       $('pod-row').setPublicSessionDisplayName(userID, displayName);
     },
@@ skipping 21 matching lines @@
      * @param {string} userID The user ID of the public session
      * @param {string} locale The locale to which this list of keyboard layouts
      *     applies
      * @param {!Object} list List of available keyboard layouts
      */
     setPublicSessionKeyboardLayouts: function(userID, locale, list) {
       $('pod-row').setPublicSessionKeyboardLayouts(userID, locale, list);
     }
   };
 });