Process Custom Elements in post-order.

Source/core/dom/CustomElementCallbackDispatcher.cpp

 /*
  * Copyright (C) 2013 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 129 matching lines @@
     CustomElementCallbackQueue* queue = ensureCallbackQueue(element);
     bool isInCurrentQueue = queue->owner() == currentElementQueue();
     if (!isInCurrentQueue) {
         queue->setOwner(currentElementQueue());
         m_flattenedProcessingStack.append(queue);
         ++s_elementQueueEnd;
     }
     return queue;
 }
 
-CustomElementCallbackQueue* CustomElementCallbackDispatcher::createAtFrontOfCurrentElementQueue(PassRefPtr<Element> element)
-{
-    CustomElementCallbackQueue* queue = createCallbackQueue(element);
-    queue->setOwner(currentElementQueue());
-
-    // The created callback is unique in being prepended to the front
-    // of the element queue
-    m_flattenedProcessingStack.insert(inCallbackDeliveryScope() ? s_elementQueueStart : kNumSentinels, queue);
-    ++s_elementQueueEnd;
-
-    return queue;
-}
-
 } // namespace WebCore