cros: Clean up screenlockPrivate plumbing.

chrome/browser/resources/login/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 14 matching lines @@
       'loadUsers',
       'runAppForTesting',
       'setApps',
       'setShouldShowApps',
       'showAppError',
       'updateUserImage',
       'setCapsLockState',
       'forceLockedUserPodFocus',
       'removeUser',
       'showBannerMessage',
-      'showUserPodButton',
-      'hideUserPodButton',
+      'showUserPodCustomIcon',
+      'hideUserPodCustomIcon',
       'setAuthType',
       'showEasyUnlockBubble',
     ],
 
     preferredWidth_: 0,
     preferredHeight_: 0,
 
     // Whether this screen is shown for the first time.
     firstShown_: true,
 
@@ skipping 220 matching lines @@
      * by the chrome.screenlockPrivate.showMessage API.
      * @param {string} message Text to be displayed
      */
     showBannerMessage: function(message) {
       var banner = $('signin-banner');
       banner.textContent = message;
       banner.classList.toggle('message-set', true);
     },
 
     /**
-     * Shows a button with an icon on the user pod of |username|. This function
+     * Shows a custom icon in the user pod of |username|. This function
      * is used by the chrome.screenlockPrivate API.
      * @param {string} username Username of pod to add button
      * @param {string} iconURL URL of the button icon
      */
-    showUserPodButton: function(username, iconURL) {
-      $('pod-row').showUserPodButton(username, iconURL);
+    showUserPodCustomIcon: function(username, iconURL) {
+      $('pod-row').showUserPodCustomIcon(username, iconURL);
     },
 
     /**
-     * Hides button on the user pod of |username| added by showUserPodButton().
-     * This function is used by the chrome.screenlockPrivate API.
+     * Hides the custom icon in the user pod of |username| added by
+     * showUserPodCustomIcon(). This function is used by the
+     * chrome.screenlockPrivate API.
      * @param {string} username Username of pod to remove button
      */
-    hideUserPodButton: function(username) {
-      $('pod-row').hideUserPodButton(username);
+    hideUserPodCustomIcon: function(username) {
+      $('pod-row').hideUserPodCustomIcon(username);
     },
 
     /**
      * Sets the authentication type used to authenticate the user.
      * @param {string} username Username of selected user
      * @param {number} authType Authentication type, must be a valid value in
      *                          the AUTH_TYPE enum in user_pod_row.js.
      * @param {string} value The initial value to use for authentication.
      */
     setAuthType: function(username, authType, value) {
       $('pod-row').setAuthType(username, authType, value);
     },
 
     /**
      * Shows a tooltip bubble explaining Easy Unlock.
      */
     showEasyUnlockBubble: function() {
       $('pod-row').showEasyUnlockBubble();
     }
   };
 });