Implement 'Do Not Track' header

chrome/browser/resources/options/browser_options.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.
 
 cr.define('options', function() {
   var OptionsPage = options.OptionsPage;
   var ArrayDataModel = cr.ui.ArrayDataModel;
   var RepeatingButton = cr.ui.RepeatingButton;
 
   //
@@ skipping 264 matching lines @@
             this.onSpellcheckConfirmDialogShownChanged_.bind(this));
       }
       // 'metricsReportingEnabled' element is only present on Chrome branded
       // builds.
       if ($('metricsReportingEnabled')) {
         $('metricsReportingEnabled').onclick = function(event) {
           chrome.send('metricsReportingCheckboxAction',
               [String(event.target.checked)]);
         };
       }
+      $('do-not-track-enabled').customChangeHandler = function(event) {
+        if (this.checked) {
+          OptionsPage.showPageByName('doNotTrackConfirm', false);
+          return true;
+        }
+        return false;
+      };
 
       // Bluetooth (CrOS only).
       if (cr.isChromeOS) {
         options.system.bluetooth.BluetoothDeviceList.decorate(
             $('bluetooth-paired-devices-list'));
 
         $('bluetooth-add-device').onclick =
             this.handleAddBluetoothDevice_.bind(this);
 
         $('enable-bluetooth').onchange = function(event) {
@@ skipping 1058 matching lines @@
     BrowserOptions.getLoggedInUsername = function() {
       return BrowserOptions.getInstance().username_;
     };
   }
 
   // Export
   return {
     BrowserOptions: BrowserOptions
   };
 });