Oilpan: move LiveNodeList collections to the heap.

Source/web/WebNodeList.cpp

 /*
  * Copyright (C) 2009 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "core/dom/NodeList.h"
 #include "public/web/WebNode.h"
 #include "wtf/PassRefPtr.h"
 
 using namespace WebCore;
 
 namespace blink {
 
 void WebNodeList::reset()
 {
-    assign(0);
+    m_private.reset();
 }
 
 void WebNodeList::assign(const WebNodeList& other)
 {
-    NodeList* p = const_cast<NodeList*>(other.m_private);
-    if (p)
-        p->ref();
-    assign(p);
+    m_private = other.m_private;
 }
 
-WebNodeList::WebNodeList(const PassRefPtr<NodeList>& col)
-    : m_private(static_cast<NodeList*>(col.leakRef()))
+WebNodeList::WebNodeList(const PassRefPtrWillBeRawPtr<NodeList>& list)
+    : m_private(list)
 {
 }
 
-void WebNodeList::assign(NodeList* p)
+WebNodeList& WebNodeList::operator=(const PassRefPtrWillBeRawPtr<NodeList>& list)
 {
-    // p is already ref'd for us by the caller
-    if (m_private)
-        m_private->deref();
-    m_private = p;
+    m_private = list;
+    return *this;
 }
 
 unsigned WebNodeList::length() const
 {
     return m_private->length();
 }
 
 WebNode WebNodeList::item(size_t index) const
 {
     return WebNode(m_private->item(index));
 }
 
 } // namespace blink