Let V8 know about the external memory owned by large StaticNodeList

Source/core/dom/StaticNodeList.cpp

 /*
  * Copyright (C) 2007, 2010 Apple 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 15 matching lines @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/dom/StaticNodeList.h"
 
 #include "core/dom/Element.h"
 
 namespace WebCore {
 
+PassRefPtr<StaticNodeList> StaticNodeList::adopt(Vector<RefPtr<Node> >& nodes)
+{
+    RefPtr<StaticNodeList> nodeList = adoptRef(new StaticNodeList);
+    nodeList->m_nodes.swap(nodes);
+    if (nodeList->AllocationSize() > externalMemoryReportSizeLimit)
+        v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(nodeList->AllocationSize());
+    return nodeList.release();
+}
+
+StaticNodeList::~StaticNodeList()
+{
+    if (AllocationSize() > externalMemoryReportSizeLimit)
+        v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(-AllocationSize());
+}
+
 unsigned StaticNodeList::length() const
 {
     return m_nodes.size();
 }
 
 Node* StaticNodeList::item(unsigned index) const
 {
     if (index < m_nodes.size())
         return m_nodes[index].get();
     return 0;
 }
 
 } // namespace WebCore