Expose images to accessibility

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 106 matching lines @@
     Role.disclosureTriangle,
     Role.menuItem,
     Role.menuItemCheckBox,
     Role.menuItemRadio,
     Role.menuListOption,
     Role.scrollBar,
     Role.tab
   ]
 });
 
+/**
+ * @param {!AutomationNode} node
+ * @return {boolean}
+ */
+AutomationPredicate.image = function(node) {
+  return node.role == Role.image && !!(node.name || node.url);
+};
+
 /** @type {AutomationPredicate.Unary} */
 AutomationPredicate.linkOrControl = AutomationPredicate.match({
   anyPredicate: [
     AutomationPredicate.control
   ],
   anyRole: [
     Role.link
   ]
 });
 
@@ skipping 315 matching lines @@
  * @param {number} level 1-6
  * @return {AutomationPredicate.Unary}
  */
 AutomationPredicate.makeHeadingPredicate = function(level) {
   return function(node) {
     return node.role == Role.heading && node.hierarchicalLevel == level;
   };
 };
 
 });  // goog.scope