Reset Screen moved to ScreenContext.

chrome/browser/resources/chromeos/login/oobe_screen_reset_confirmation_overlay.js

 // Copyright 2014 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('reset', function() {
 
+  var USER_ACTION_POWERWASH_PRESSED = 'powerwash-pressed';
+  var CONTEXT_KEY_IS_CONFIRMATIONAL_VIEW = 'is-confirmational-view';
   /**
    * ResetScreenConfirmationOverlay class
    * Encapsulated handling of the 'Confirm reset device' overlay OOBE page.
    * @class
    */
   function ConfirmResetOverlay() {
   }
 
   cr.addSingletonGetter(ConfirmResetOverlay);
 
   ConfirmResetOverlay.prototype = {
     /**
      * Initialize the page.
      */
     initializePage: function() {
       var overlay = $('reset-confirm-overlay');
       overlay.addEventListener('cancelOverlay', this.handleDismiss_.bind(this));
 
       $('reset-confirm-dismiss').addEventListener('click', this.handleDismiss_);
       $('reset-confirm-commit').addEventListener('click', this.handleCommit_);
 
       $('overlay-reset').removeAttribute('hidden');
     },
 
     /**
      * Handles a click on the dismiss button.
      * @param {Event} e The click event.
      */
     handleDismiss_: function(e) {
-      $('reset').isConfirmational = false;
+      $('reset').context.set(CONTEXT_KEY_IS_CONFIRMATIONAL_VIEW, false);
+      $('reset').commitContextChanges();
       $('overlay-reset').setAttribute('hidden', true);
       e.stopPropagation();
     },
 
     /**
      * Handles a click on the commit button.
      * @param {Event} e The click event.
      */
     handleCommit_: function(e) {
-      $('reset').isConfirmational = false;
-      chrome.send('powerwashOnReset', [$('reset').rollbackChecked]);
+      $('reset').context.set(CONTEXT_KEY_IS_CONFIRMATIONAL_VIEW, false);
+      $('reset').commitContextChanges();
+      $('reset').send(login.Screen.CALLBACK_USER_ACTED,
+                      USER_ACTION_POWERWASH_PRESSED);
       $('overlay-reset').setAttribute('hidden', true);
       e.stopPropagation();
     },
   };
 
   // Export
   return {
     ConfirmResetOverlay: ConfirmResetOverlay
   };
 });