Reland: Add an event to notify accessibility when a permissions bubble gets shown.

chrome/browser/resources/chromeos/chromevox/cvox2/background/automation_predicate.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.
 
 /**
  * @fileoverview ChromeVox predicates for the automation extension API.
  */
 
 goog.provide('AutomationPredicate');
 goog.provide('AutomationPredicate.Binary');
@@ skipping 65 matching lines @@
  * @param {chrome.automation.AutomationNode} second
  * @return {boolean}
  */
 AutomationPredicate.linebreak = function(first, second) {
   // TODO(dtseng): Use next/previousOnLin once available.
   var fl = first.location;
   var sl = second.location;
   return fl.top != sl.top ||
       (fl.top + fl.height != sl.top + sl.height);
 };
+
+/**
+ * Leaf nodes that should be ignored.
+ * @param {chrome.automation.AutomationNode} node
+ * @return {boolean}
+ */
+AutomationPredicate.shouldIgnoreLeaf = function(node) {
+  return AutomationPredicate.leaf(node) &&
+      node.role == chrome.automation.RoleType.client;
+};