Fix license headers in a number of files

chrome/common/extensions/docs/examples/apps/hello-php/index.php

 <?php
 /**
+ * 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.
+ *
  * A "Hello world!" for the Chrome Web Store Licensing API, in PHP. This
  * program logs the user in with Google's Federated Login API (OpenID), fetches
  * their license state with OAuth, and prints one of these greetings as
  * appropriate:
  *
  *   1. This user has FREE_TRIAL access to this application ( appId: 1 )
  *   2. This user has FULL access to this application ( appId: 1 )
  *   3. This user has NO access to this application ( appId: 1 )
  *
  * This code makes use of a popup ui extension to the OpenID protocol. Instead
  * of the user being redirected to the Google login page, a popup window opens
  * to the login page, keeping the user on the main application page. See
  * popuplib.js
  *
- * Copyright 2010 the Chromium Authors
- *
- * Use of this source code is governed by a BSD-style license that can be found
- * in the "LICENSE" file.
- *
  * Eric Bidelman <ericbidelman@chromium.org>
  */
 
 session_start();
 
 require_once 'lib/oauth/OAuth.php';
 require_once 'lib/lightopenid/openid.php';
 
 // Full URL of the current application is running under.
 $scheme = (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != 'on') ? 'http' :
@@ skipping 248 matching lines @@
           extensions: extensions
         });
         link.parentNode.appendChild(
             document.createTextNode('Authenticating...'));
         link.parentNode.removeChild(link);
         googleOpener.popup(w, h);
       }
     </script>
   </body>
 </html>