dom-ui settings: properly implement the 'metrics reporting' checkbox....

chrome/browser/resources/options/alert_overlay.js

 // Copyright (c) 2010 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;
 
   /**
    * AlertOverlay class
@@ skipping 76 matching lines @@
       $('alertOverlayTitle').style.display = 'none';
     }
     if (message != undefined) {
       $('alertOverlayMessage').textContent = message;
       $('alertOverlayMessage').style.display = 'block';
     } else {
       $('alertOverlayMessage').style.display = 'none';
     }
     $('alertOverlayOk').textContent =
         (okTitle != undefined ? okTitle
-                              : LocalStrings.getString('ok'));
-    $('alertOverlayCancel').textContent =
-        (cancelTitle != undefined ? cancelTitle
-                                  : LocalStrings.getString('cancel'));
+                              : localStrings.getString('ok'));
+    if (cancelTitle != '') {
+      $('alertOverlayCancel').textContent =
+          (cancelTitle != undefined ? cancelTitle
+                                    : localStrings.getString('cancel'));
+      $('alertOverlayCancel').style.display = 'inline';
+    } else {
+      $('alertOverlayCancel').style.display = 'none';
+    }
 
     AlertOverlay.getInstance().okCallback = okCallback;
     AlertOverlay.getInstance().cancelCallback = cancelCallback;
 
     OptionsPage.showOverlay('alertOverlay');
   }
 
   // Export
   return {
     AlertOverlay: AlertOverlay
   };
 
 });