Split out non-auto-generatable externs from auto generated ones.

chrome/browser/resources/chromeos/chromevox/cvox2/background/tabs_automation_handler.js

 // Copyright 2015 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 Handles automation from a tabs automation node.
  */
 
 goog.provide('TabsAutomationHandler');
 
@@ skipping 10 matching lines @@
  */
 TabsAutomationHandler = function(tabRoot) {
   DesktopAutomationHandler.call(this, tabRoot);
 
   if (tabRoot.role != RoleType.rootWebArea)
     throw new Error('Expected rootWebArea node but got ' + tabRoot.role);
 
   // When the root is focused, simulate what happens on a load complete.
   if (tabRoot.state.focused) {
     this.onLoadComplete(
-        new chrome.automation.AutomationEvent(EventType.loadComplete, tabRoot,
+        new ChromeVoxAutomationEvent(EventType.loadComplete, tabRoot,
                                               'page'));
   }
 };
 
 TabsAutomationHandler.prototype = {
   __proto__: DesktopAutomationHandler.prototype,
 
   /** @override */
   didHandleEvent_: function(evt) {
     evt.stopPropagation();
   },
 
   /** @override */
   onLoadComplete: function(evt) {
     var focused = evt.target.find({state: {focused: true}}) || evt.target;
-    this.onFocus(new chrome.automation.AutomationEvent(
+    this.onFocus(new ChromeVoxAutomationEvent(
         EventType.focus, focused, evt.eventFrom));
   }
 };
 
 });  // goog.scope