Implement the new Sync Confirmation dialog on Linux and Windows.

chrome/browser/resources/sync_confirmation/sync_confirmation.js

+/* Copyright 2015 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('sync.confirmation', function() {
+  'use strict';
+
+  function onConfirm(e) {
+    chrome.send('confirm');
+  }
+
+  function onUndo(e) {
+    chrome.send('undo');
+  }
+
+  function onGoToSettings(e) {
+    chrome.send('goToSettings');
+  }
+
+  function initialize() {
+    $('confirmButton').addEventListener('click', onConfirm);
+    $('undoButton').addEventListener('click', onUndo);
+    $('settingsLink').addEventListener('click', onGoToSettings);
+    chrome.send('initialized');
+  }
+
+  function setUserImageURL(url) {
+    $('profile-picture').src = url;
+  }
+
+  return {
+    initialize: initialize,
+    setUserImageURL: setUserImageURL
+  };
+});
+
+document.addEventListener('DOMContentLoaded', sync.confirmation.initialize);