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

chrome/browser/resources/extensions/extensions.js

Index: chrome/browser/resources/extensions/extensions.js
diff --git a/chrome/browser/resources/extensions/extensions.js b/chrome/browser/resources/extensions/extensions.js
index e3d607837c0f262dcd8932ed5c43f8852c2044a9..e916d704a2be6d54b8de871caf143207726c9d64 100644
--- a/chrome/browser/resources/extensions/extensions.js
+++ b/chrome/browser/resources/extensions/extensions.js
@@ -87,6 +87,14 @@ cr.define('extensions', function() {
       $('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));
@@ -245,13 +253,18 @@ cr.define('extensions', function() {
     var pageDiv = $('extension-settings');
     var marginTop = 0;
     if (extensionsData.profileIsManaged) {
-      pageDiv.classList.add('showing-banner');
       pageDiv.classList.add('profile-is-managed');
+    } else {
+      pageDiv.classList.remove('profile-is-managed');
+    }
+    if (extensionsData.profileIsManaged && !extensionsData.profileIsElevated) {
+      pageDiv.classList.add('showing-banner');
+      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;
     }
 
@@ -262,7 +275,7 @@ cr.define('extensions', function() {
     }
     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;