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

chrome/browser/resources/chromeos/chromevox/cvox2/background/editing.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 Processes events related to editing text and emits the
  * appropriate spoken and braille feedback.
  */
 
 goog.provide('editing.TextEditHandler');
@@ skipping 33 matching lines @@
   get node() {
     return this.node_;
   },
 
   /**
    * Receives the following kinds of events when the node provided to the
    * constructor is focuse: |focus|, |textChanged|, |textSelectionChanged| and
    * |valueChanged|.
    * An implementation of this method should emit the appropritate braille and
    * spoken feedback for the event.
-   * @param {!AutomationEvent} evt
+   * @param {!AutomationEvent|!ChromeVoxAutomationEvent} evt
    */
   onEvent: goog.abstractMethod,
 };
 
 /**
  * A |TextEditHandler| suitable for text fields.
  * @constructor
  * @param {!AutomationNode} node A node with the role of |textField|
  * @extends {editing.TextEditHandler}
  */
@@ skipping 147 matching lines @@
     testNode = testNode.parent;
   } while (testNode);
 
   if (rootFocusedEditable)
     return new TextFieldTextEditHandler(rootFocusedEditable);
 
   return null;
 };
 
 });