Support output for Chrome's native find in ChromeVox.

third_party/WebKit/Source/web/TextFinder.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 219 matching lines @@
 
     AXObjectCacheImpl* axObjectCache = toAXObjectCacheImpl(ownerFrame().frame()->document()->existingAXObjectCache());
     if (!axObjectCache)
         return;
 
     AXObject* startObject = axObjectCache->get(m_activeMatch->startContainer());
     AXObject* endObject = axObjectCache->get(m_activeMatch->endContainer());
     if (!startObject || !endObject)
         return;
 
+    // Notify the client of new text marker data.
+    axObjectCache->postNotification(startObject, AXObjectCache::AXNotification::AXChildrenChanged);
+    if (startObject != endObject)
+        axObjectCache->postNotification(endObject, AXObjectCache::AXNotification::AXChildrenChanged);
+
     if (ownerFrame().client()) {
         ownerFrame().client()->handleAccessibilityFindInPageResult(
             identifier, m_activeMatchIndex + 1,
             WebAXObject(startObject), m_activeMatch->startOffset(),
             WebAXObject(endObject), m_activeMatch->endOffset());
     }
 }
 
 void TextFinder::scopeStringMatches(int identifier, const WebString& searchText, const WebFindOptions& options, bool reset)
 {
@@ skipping 484 matching lines @@
 DEFINE_TRACE(TextFinder)
 {
     visitor->trace(m_ownerFrame);
     visitor->trace(m_activeMatch);
     visitor->trace(m_resumeScopingFromRange);
     visitor->trace(m_deferredScopingWork);
     visitor->trace(m_findMatchesCache);
 }
 
 } // namespace blink