Don't allow elevation for CHROME_OS.

chrome/browser/resources/history/history.js

 // Copyright (c) 2012 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.
 
 <include src="../uber/uber_utils.js">
 
 ///////////////////////////////////////////////////////////////////////////////
 // Globals:
 /** @const */ var RESULTS_PER_PAGE = 150;
 
@@ skipping 1458 matching lines @@
   });
 
   // Only show the controls if the command line switch is activated.
   if (loadTimeData.getBoolean('groupByDomain') ||
       loadTimeData.getBoolean('isManagedProfile')) {
     $('filter-controls').hidden = false;
   }
   if (loadTimeData.getBoolean('isManagedProfile')) {
     $('allow-selected').hidden = false;
     $('block-selected').hidden = false;
-    $('lock-unlock-button').classList.add('profile-is-managed');
-
-    $('lock-unlock-button').addEventListener('click', function(e) {
-      var isLocked = document.body.classList.contains('managed-user-locked');
-      chrome.send('setManagedUserElevated', [isLocked]);
-    });
-
-    chrome.send('getManagedUserElevated');
+    if (!cr.isChromeOS) {
+      $('lock-unlock-button').classList.add('profile-is-managed');
+      $('lock-unlock-button').addEventListener('click', function(e) {
+        var isLocked = document.body.classList.contains('managed-user-locked');
+        chrome.send('setManagedUserElevated', [isLocked]);
+      });
+      chrome.send('getManagedUserElevated');
+    }
   }
 
   var title = loadTimeData.getString('title');
   uber.invokeMethodOnParent('setTitle', {title: title});
 
   // Adjust the position of the notification bar when the window size changes.
   window.addEventListener('resize',
       historyView.positionNotificationBar.bind(historyView));
 
   if (isMobileVersion()) {
@@ skipping 336 matching lines @@
 
 /**
  * Called when the page is initialized or when the authentication status
  * of the managed user changes.
  * @param {Object} isElevated Contains the information if the current profile is
  * in elevated state.
  */
 function managedUserElevated(isElevated) {
   if (isElevated) {
     document.body.classList.remove('managed-user-locked');
-    $('lock-unlock-button').textContent = loadTimeData.getString('lockButton');
+    $('lock-unlock-button').textContent =
+        loadTimeData.getString('lockButton');
   } else {
     document.body.classList.add('managed-user-locked');
     $('lock-unlock-button').textContent =
         loadTimeData.getString('unlockButton');
   }
 }
 
 // Add handlers to HTML elements.
 document.addEventListener('DOMContentLoaded', load);
 
 // This event lets us enable and disable menu items before the menu is shown.
 document.addEventListener('canExecute', function(e) {
   e.canExecute = true;
 });