Change email to be OPT-IN on Chrome and OPT-OUT on cros.

chrome/browser/resources/feedback.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.
 
 // Constants.
 /** @const */ var FEEDBACK_LANDING_PAGE =
     'https://www.google.com/support/chrome/go/feedback_confirmation';
 
 var selectedThumbnailDivId = '';
 var selectedThumbnailId = '';
@@ skipping 266 matching lines @@
 }
 
 function setupDialogDefaults(defaults) {
   // Current url.
   if ($('page-url-text').value == '')
     $('page-url-text').value = defaults.currentUrl;
   if (defaults.currentUrl == '')
     $('page-url-checkbox').checked = false;
   // User e-mail.
   $('user-email-text').value = defaults.userEmail;
+  $('user-email-checkbox').checked = defaults.emailCheckboxDefault;
 
   // Are screenshots disabled?
   if (!defaults.disableScreenshots)
     enableScreenshots();
 
   if (defaults.useSaved) {
     $('screenshot-link-tosaved').hidden = false;
   }
 }
 
 window.addEventListener('DOMContentLoaded', load);