WebUI user-manager: Remove supervised users related dead code.

This code should have been removed as part of
https://chromium-review.googlesource.com/c/chromium/src/+/1029952/

Bug: 902959,828890
Change-Id: Ib7e00a646c864bea6b741924d6c592197ff2863d
Reviewed-on: https://chromium-review.googlesource.com/c/1327227Reviewed-by: Esmael El-Moslimany <aee@chromium.org>
Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606972}

chrome/browser/resources/md_user_manager/user_manager_pages.html

@@ -20,33 +20,14 @@
     </style>
     <cr-view-manager id="animatedPages" role="main">
       <div id="create-user-page" slot="view" on-keydown="stopPropagation_">
-        <!-- Keep the page alive while visiting the Learn More page. -->
-        <template is="dom-if"
-            if="[[isPresentIn_(selectedPage_,
-                               'create-user-page',
-                               'supervised-learn-more-page')]]" restamp>
+        <template is="dom-if" if="[[shouldShowCreateProfile_(selectedPage_)]]"
+            restamp>
           <create-profile></create-profile>
         </template>
       </div>
       <div id="user-pods-page" slot="view">
           <slot></slot>
       </div>
-      <div id="supervised-learn-more-page" slot="view"
-          on-keydown="stopPropagation_">
-        <template is="dom-if"
-            if="[[isPresentIn_(selectedPage_, 'supervised-learn-more-page')]]">
-          <supervised-user-learn-more></supervised-user-learn-more>
-        </template>
-      </div>
-      <div id="supervised-create-confirm-page" slot="view"
-          on-keydown="stopPropagation_">
-        <template is="dom-if"
-            if="[[isPresentIn_(selectedPage_,
-                               'supervised-create-confirm-page')]]">
-          <supervised-user-create-confirm profile-info="[[pageData_]]">
-          </supervised-user-create-confirm>
-        </template>
-      </div>
     </cr-view-manager>
   </template>
   <script src="user_manager_pages.js"></script>

chrome/browser/resources/md_user_manager/user_manager_pages.js

@@ -66,14 +66,8 @@ Polymer({
     e.stopPropagation();
   },
 
-  /**
-   * Returns True if the first argument is present in the given set of values.
-   * @param {string} selectedPage ID of the currently selected page.
-   * @param {...string} var_args Pages IDs to check the first argument against.
-   * @return {boolean}
-   */
-  isPresentIn_: function(selectedPage, var_args) {
-    const pages = Array.prototype.slice.call(arguments, 1);
-    return pages.indexOf(selectedPage) !== -1;
+  /** @return {boolean} */
+  shouldShowCreateProfile_: function() {
+    return this.selectedPage_ == 'create-user-page';
   }
 });

chrome/test/data/webui/md_user_manager/user_manager_pages_tests.js

@@ -20,10 +20,9 @@ cr.define('user_manager.user_manager_pages_tests', function() {
       });
 
       test('User Pods page is the default visible page', function() {
-        assertTrue(pagesElement.isPresentIn_(
-            pagesElement.selectedPage_, 'user-pods-page'));
-        assertFalse(pagesElement.isPresentIn_(
-            pagesElement.selectedPage_, 'create-user-page'));
+        const activeView =
+            pagesElement.shadowRoot.querySelector('div.active[slot="view"]');
+        assertEquals('user-pods-page', activeView.id);
       });
 
       test('Change page listener works', function() {