Make click targets inside links work.

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

 /*
  * Copyright (C) 2012, 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 1991 matching lines @@
     case TabRole:
     case MenuItemRole:
     case MenuItemCheckBoxRole:
     case MenuItemRadioRole:
     case ListItemRole:
         return toElement(node);
     default:
         break;
     }
 
-    Element* elt = anchorElement();
-    if (!elt)
-        elt = mouseButtonListener();
-    return elt;
+    Element* anchor = anchorElement();
+    Element* clickElement = mouseButtonListener();
+    if (!anchor || (clickElement && clickElement->isDescendantOf(anchor)))
+        return clickElement;
+    return anchor;
 }
 
 Element* AXNodeObject::anchorElement() const
 {
     Node* node = this->getNode();
     if (!node)
         return 0;
 
     AXObjectCacheImpl& cache = axObjectCache();
 
@@ skipping 821 matching lines @@
     return placeholder;
 }
 
 DEFINE_TRACE(AXNodeObject)
 {
     visitor->trace(m_node);
     AXObject::trace(visitor);
 }
 
 } // namespace blink