Fixed button focusing in OOBE screens.

chrome/browser/resources/chromeos/login/oobe.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.
 
 /**
  * @fileoverview Out of the box experience flow (OOBE).
  * This is the main code for the OOBE WebUI implementation.
  */
 
 var localStrings = new LocalStrings();
@@ skipping 77 matching lines @@
     $('security-tpm-link').addEventListener('click', function(event) {
       chrome.send('eulaOnTpmPopupOpened');
       $('popup-overlay').hidden = false;
       $('security-ok-button').focus();
     });
 
     Oobe.initializeA11yMenu();
 
     $('security-ok-button').addEventListener('click', function(event) {
       $('popup-overlay').hidden = true;
+      Oobe.getInstance().restoreFocus();  // Restore the screen's focus.

[Nikita (slow), 2012/11/28 18:26:26]

nit: Please place comment above this line.

[mtomasz, 2012/11/28 21:57:42]

Done.

     });
     // Do not allow focus leaving the overlay.
     $('popup-overlay').addEventListener('focusout', function(event) {
       // WebKit does not allow immediate focus return.
       setTimeout(function() { $('security-ok-button').focus(); }, 0);
       event.preventDefault();
     });
 
     chrome.send('screenStateInitialize');
   };
@@ skipping 345 matching lines @@
 // Allow selection events on components with editable text (password field)
 // bug (http://code.google.com/p/chromium/issues/detail?id=125863)
 disableTextSelectAndDrag(function(e) {
   var src = e.target;
   return src instanceof HTMLTextAreaElement ||
          src instanceof HTMLInputElement &&
          /text|password|search/.test(src.type);
 });
 
 document.addEventListener('DOMContentLoaded', cr.ui.Oobe.initialize);