DevTools: fixed test ExtensionApiTest.Debugger

chrome/test/data/extensions/api_test/debugger/background.js

 // Copyright (c) 2011 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 pass = chrome.test.callbackPass;
 var fail = chrome.test.callbackFail;
 
 var tabId;
 var debuggee;
 var protocolVersion = "1.1";
@@ skipping 122 matching lines @@
       if (target) {
         chrome.debugger.attach({targetId: target.id}, protocolVersion,
             fail(SILENT_FLAG_REQUIRED));
       } else {
         chrome.test.succeed();
       }
     });
   },
 
   function createAndDiscoverTab() {
-    function onUpdated(tabId) {
+    function onUpdated(tabId, changeInfo) {
+      if (changeInfo.status == 'loading')
+        return;
       chrome.tabs.onUpdated.removeListener(onUpdated);
       chrome.debugger.getTargets(function(targets) {
         var page = targets.filter(
             function(t) {
               return t.type == 'page' &&
                      t.tabId == tabId &&
                      t.title == 'Test page';
             })[0];
         if (page) {
           chrome.debugger.attach(
@@ skipping 44 matching lines @@
       function onAttach() {
         chrome.debugger.sendCommand(debuggee, "Page.enable");
         chrome.debugger.sendCommand(
             debuggee, "Page.navigate", {url:"about:blank"}, onNavigateDone);
       }
 
       chrome.debugger.attach(debuggee, protocolVersion, onAttach);
     });
   }
 ]);