Ignore listMarker nodes and sync from left to right after a jump command.

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 254 matching lines @@
 AutomationPredicate.shouldIgnoreNode = function(node) {
   // Ignore invisible nodes.
   if (node.state.invisible ||
       (node.location.height == 0 && node.location.width == 0))
     return true;
 
   // Ignore structural containres.
   if (AutomationPredicate.structuralContainer(node))
     return true;
 
+  // Ignore list markers since we already announce listitem role.
+  if (node.role == RoleType.listMarker)
+    return true;
+
   // Don't ignore nodes with names.
   if (node.name || node.value || node.description)
     return false;
 
   // Ignore some roles.
   return AutomationPredicate.leaf(node) &&
       (node.role == RoleType.client ||
        node.role == RoleType.div ||
        node.role == RoleType.group ||
        node.role == RoleType.image ||
        node.role == RoleType.staticText);
 };
 
 });  // goog.scope