Fire an accessible click event when a web node is clicked on.

third_party/WebKit/Source/modules/accessibility/AXObjectCacheImpl.cpp

 /*
  * Copyright (C) 2014, 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 904 matching lines @@
 
     m_modificationCount++;
 
     // Create the AXObject if it didn't yet exist - that's always safe at the end of a layout, and it
     // allows an AX notification to be sent when a page has its first layout, rather than when the
     // document first loads.
     if (AXObject* obj = getOrCreate(layoutObject))
         postNotification(obj, AXLayoutComplete);
 }
 
+void AXObjectCacheImpl::handleClicked(Node* node)
+{
+    if (AXObject* obj = getOrCreate(node))
+        postNotification(obj, AXClicked);
+}
+
 void AXObjectCacheImpl::handleAriaExpandedChange(Node* node)
 {
     if (AXObject* obj = getOrCreate(node))
         obj->handleAriaExpandedChanged();
 }
 
 void AXObjectCacheImpl::handleAriaSelectedChanged(Node* node)
 {
     AXObject* obj = get(node);
     if (!obj)
@@ skipping 307 matching lines @@
     visitor->trace(m_nodeObjectMapping);
 #endif
 
     visitor->trace(m_objects);
     visitor->trace(m_notificationsToPost);
 
     AXObjectCache::trace(visitor);
 }
 
 } // namespace blink