Fix crash when calling chrome.tabs.move({index:-1}).

chrome/test/data/extensions/api_test/tabs/basics/tabs_util.js

 // Copyright (c) 2010 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.
 
+var fail = chrome.test.callbackFail;

[Mihai Parparita -not on Chrome, 2011/09/08 20:49:59]

Nit: I don't think this change is necessary.

[jstritar, 2011/09/08 20:54:03]

Oops, forgot to get rid of that.

 var pass = chrome.test.callbackPass;
 var assertEq = chrome.test.assertEq;
 var assertTrue = chrome.test.assertTrue;
 
 function pageUrl(letter) {
   return chrome.extension.getURL(letter + ".html");
 }
 
 // Creates one window with tabs set to the urls in the array |tabUrls|.
 // At least one url must be specified.
@@ skipping 32 matching lines @@
           break;
       }
       if (ready)
         callback();
       else
         window.setTimeout(waitForTabs, 30);
     });
   }
   waitForTabs();
 }