Track all changed nodes during an update

chrome/renderer/resources/extensions/automation_custom_bindings.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.
 
 // Custom bindings for the automation API.
 var AutomationNode = require('automationNode').AutomationNode;
 var AutomationRootNode = require('automationNode').AutomationRootNode;
 var automation = require('binding').Binding.create('automation');
 var automationInternal =
     require('binding').Binding.create('automationInternal').generate();
@@ skipping 198 matching lines @@
 
   var subroot = AutomationRootNode.get(childTreeID);
   if (!subroot) {
     automationUtil.storeTreeCallback(childTreeID, function(root) {
       // Return early if the root has already been attached.
       if (root.parent)
         return;
 
       privates(root).impl.setHostNode(node);
 
-      if (root.docLoaded)
-        privates(root).impl.dispatchEvent(schema.EventType.loadComplete);
+      if (root.docLoaded) {
+        privates(root).impl.dispatchEvent(
+            schema.EventType.loadComplete, 'page');
+      }
 
-      privates(node).impl.dispatchEvent(schema.EventType.childrenChanged);
+      privates(node).impl.dispatchEvent(
+          schema.EventType.childrenChanged, 'none');
     });
 
     automationInternal.enableFrame(childTreeID);
   } else {
     privates(subroot).impl.setHostNode(node);
   }
 });
 
 automationInternal.onTreeChange.addListener(function(observerID,
                                                      treeID,
@@ skipping 97 matching lines @@
 
 var binding = automation.generate();
 // Add additional accessibility bindings not specified in the automation IDL.
 // Accessibility and automation share some APIs (see
 // ui/accessibility/ax_enums.idl).
 forEach(schema, function(k, v) {
   binding[k] = v;
 });
 
 exports.$set('binding', binding);