remove memoryinstrumentation

Source/core/dom/ElementShadow.h

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 55 matching lines @@
     void recalcStyle(Node::StyleChange);
     void removeAllEventListeners();
 
     void invalidateDistribution() { m_distributor.invalidateDistribution(host()); }
     void didAffectSelector(AffectedSelectorMask mask) { m_distributor.didAffectSelector(host(), mask); }
     void willAffectSelector() { m_distributor.willAffectSelector(host()); }
 
     ContentDistributor& distributor() { return m_distributor; }
     const ContentDistributor& distributor() const { return m_distributor; }
 
-    void reportMemoryUsage(MemoryObjectInfo*) const;
-
 private:
     ElementShadow() { }
 
     void removeAllShadowRoots();
 
     DoublyLinkedList<ShadowRoot> m_shadowRoots;
     ContentDistributor m_distributor;
 };
 
 inline Element* ElementShadow::host() const
@@ skipping 34 matching lines @@
     if (Node* parent = node->parentNode())
         if (parent->isElementNode())
             return toElement(parent)->shadow();
     return 0;
 }
 
 
 } // namespace
 
 #endif