MD Settings: Hide Profile Shortcut switch for single-profile machines.

chrome/browser/resources/settings/people_page/manage_profile_browser_proxy.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 A helper object used from the "Manage Profile" subpage of
  * the People section to interact with the browser. Chrome Browser only.
  */
+
+/**
+ * Contains the possible profile shortcut statuses. These strings must be kept
+ * in sync with the C++ Manage Profile handler.
+ * @enum {string}
+ */
+var ProfileShortcutStatus = {
+  PROFILE_SHORTCUT_SETTING_HIDDEN: 'profileShortcutSettingHidden',
+  PROFILE_SHORTCUT_NOT_FOUND: 'profileShortcutNotFound',
+  PROFILE_SHORTCUT_FOUND: 'profileShortcutFound',
+};
+
 cr.define('settings', function() {
   /** @interface */
   function ManageProfileBrowserProxy() {}
 
   ManageProfileBrowserProxy.prototype = {
     /**
      * Gets the available profile icons to choose from.
      * @return {!Promise<!Array<string>>}
      */
     getAvailableIcons: function() {},
 
     /**
      * Sets the profile's icon and name. There is no response.
      * @param {!string} iconUrl The new profile URL.
      * @param {!string} name The new profile name.
      */
     setProfileIconAndName: function(iconUrl, name) {},
 
     /**
      * Returns whether the current profile has a shortcut.
-     * @return {!Promise<boolean>}
+     * @return {!Promise<ProfileShortcutStatus>}
      */
-    getHasProfileShortcut: function() {},
+    getProfileShortcutStatus: function() {},
 
     /**
      * Adds a shortcut for the current profile.
      */
     addProfileShortcut: function() {},
 
     /**
      * Removes the shortcut of the current profile.
      */
     removeProfileShortcut: function() {},
@@ skipping 13 matching lines @@
     getAvailableIcons: function() {
       return cr.sendWithPromise('getAvailableIcons');
     },
 
     /** @override */
     setProfileIconAndName: function(iconUrl, name) {
       chrome.send('setProfileIconAndName', [iconUrl, name]);
     },
 
     /** @override */
-    getHasProfileShortcut: function() {
-      return cr.sendWithPromise('requestHasProfileShortcuts');
+    getProfileShortcutStatus: function() {
+      return cr.sendWithPromise('requestProfileShortcutStatus');
     },
 
     /** @override */
     addProfileShortcut: function() {
       chrome.send('addProfileShortcut');
     },
 
     /** @override */
     removeProfileShortcut: function() {
       chrome.send('removeProfileShortcut');
     },
   };
 
   return {
     ManageProfileBrowserProxy: ManageProfileBrowserProxy,
     ManageProfileBrowserProxyImpl: ManageProfileBrowserProxyImpl,
   };
 });