Autofill button should get enabled and disabled according to the policy value.

chrome/browser/resources/options/personal_options.js

 // Copyright (c) 2011 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.
 
 cr.define('options', function() {
 
   var OptionsPage = options.OptionsPage;
 
   // State variables.
   var syncEnabled = false;
@@ skipping 106 matching lines @@
       }
 
       if (PersonalOptions.disableAutofillManagement()) {
         $('autofill-settings').disabled = true;
 
         // Disable and turn off autofill.
         var autofillEnabled = $('autofill-enabled');
         autofillEnabled.disabled = true;
         autofillEnabled.checked = false;
         cr.dispatchSimpleEvent(autofillEnabled, 'change');
+      } else {
+        Preferences.getInstance().addEventListener(
+            'autofill.enabled',
+            function(event) {
+              var managed = event.value && event.value['managed'];
+              var value = event.value && event.value['value'] != undefined ?
+                  event.value['value'] : event.value;
+              $('autofill-settings').disabled = managed && !value;
+            });
       }
     },
 
     setSyncEnabled_: function(enabled) {
       this.syncEnabled = enabled;
     },
 
     setSyncSetupCompleted_: function(completed) {
       this.syncSetupCompleted = completed;
       $('customize-sync').hidden = !completed;
@@ skipping 124 matching lines @@
       PersonalOptions.getInstance()[name + '_'](value);
     };
   });
 
   // Export
   return {
     PersonalOptions: PersonalOptions
   };
 
 });