Add managed user lock/unlock button for the extensions page.

chrome/browser/resources/extensions/extensions.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"></include>
 <include src="extension_commands_overlay.js"></include>
 <include src="extension_focus_manager.js"></include>
 <include src="extension_list.js"></include>
 <include src="pack_extension_overlay.js"></include>
 
@@ skipping 69 matching lines @@
 
       // This will request the data to show on the page and will get a response
       // back in returnExtensionsData.
       chrome.send('extensionSettingsRequestExtensionsData');
 
       $('toggle-dev-on').addEventListener('change',
           this.handleToggleDevMode_.bind(this));
       $('dev-controls').addEventListener('webkitTransitionEnd',
           this.handleDevControlsTransitionEnd_.bind(this));
 
+      $('unlock-button').addEventListener('click', function() {
+        chrome.send('setElevated', [true]);
+      });
+
+      $('lock-button').addEventListener('click', function() {
+        chrome.send('setElevated', [false]);
+      });
+
       // Set up the three dev mode buttons (load unpacked, pack and update).
       $('load-unpacked').addEventListener('click',
           this.handleLoadUnpackedExtension_.bind(this));
       $('pack-extension').addEventListener('click',
           this.handlePackExtension_.bind(this));
       $('update-extensions-now').addEventListener('click',
           this.handleUpdateExtensionNow_.bind(this));
 
       if (!loadTimeData.getBoolean('offStoreInstallEnabled')) {
         this.dragWrapper_ = new cr.ui.DragWrapper(document.documentElement,
@@ skipping 137 matching lines @@
           b = b.name.toLowerCase();
           return a < b ? -1 : (a > b ? 1 : 0);
         } else {
           return a.order < b.order ? -1 : 1;
         }
       });
     }
 
     var pageDiv = $('extension-settings');
     var marginTop = 0;
-    if (extensionsData.profileIsManaged) {
+    if (extensionsData.profileIsManaged)
+      pageDiv.classList.add('profile-is-managed');

[not at google - send to devlin, 2013/02/21 16:25:24]

does this need an else: classList.remove('profile-is-managed')?

[Adrian Kuegel, 2013/02/21 16:39:00]

Currently I think the profile is put in managed state at creation time and it
cannot be changed later into a non-managed profile. Anyway, I will add it, it
doesn't hurt and is possibly less confusing.

+    if (extensionsData.profileIsManaged && !extensionsData.profileIsElevated) {
       pageDiv.classList.add('showing-banner');
-      pageDiv.classList.add('profile-is-managed');
+      pageDiv.classList.add('managed-user-locked');
       $('toggle-dev-on').disabled = true;
       marginTop += 45;
     } else {
       pageDiv.classList.remove('showing-banner');
-      pageDiv.classList.remove('profile-is-managed');
+      pageDiv.classList.remove('managed-user-locked');
       $('toggle-dev-on').disabled = false;
     }
 
     if (extensionsData.showDisabledExtensionsWarning) {
       pageDiv.classList.add('showing-banner');
       pageDiv.classList.add('sideload-wipeout');
       marginTop += 60;
     }
     pageDiv.style.marginTop = marginTop + 'px';
 
-    if (extensionsData.developerMode && !extensionsData.profileIsManaged) {
+    if (extensionsData.developerMode) {
       pageDiv.classList.add('dev-mode');
       $('toggle-dev-on').checked = true;
       $('dev-controls').hidden = false;
     } else {
       pageDiv.classList.remove('dev-mode');
       $('toggle-dev-on').checked = false;
     }
 
     $('load-unpacked').disabled = extensionsData.loadUnpackedDisabled;
 
@@ skipping 84 matching lines @@
   return {
     ExtensionSettings: ExtensionSettings
   };
 });
 
 var ExtensionSettings = extensions.ExtensionSettings;
 
 window.addEventListener('load', function(e) {
   ExtensionSettings.getInstance().initialize();
 });