Oilpan: Prepare to support garbage-collected Node in WebNode hierarchy.

Source/web/WebNode.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 186 matching lines @@
 {
     if (m_private->isContainerNode())
         return WebElementCollection(toContainerNode(m_private.get())->getElementsByTagName(tag));
     return WebElementCollection();
 }
 
 WebElement WebNode::querySelector(const WebString& tag, WebExceptionCode& ec) const
 {
     TrackExceptionState exceptionState;
     WebElement element;
-    if (m_private->isContainerNode())
+    if (m_private->isContainerNode()) {
+#if ENABLE(OILPAN)
+        // FIXME: ContainerNode::querySelector should return an Element raw
+        // pointer.
+        element = toContainerNode(m_private.get())->querySelector(tag, exceptionState).get();
+#else
         element = toContainerNode(m_private.get())->querySelector(tag, exceptionState);
+#endif
+    }
     ec = exceptionState.code();
     return element;
 }
 
 WebElement WebNode::rootEditableElement() const
 {
     return WebElement(m_private->rootEditableElement());
 }
 
 bool WebNode::focused() const
@@ skipping 31 matching lines @@
 }
 
 WebElement WebNode::shadowHost() const
 {
     if (isNull())
         return WebElement();
     const Node* coreNode = constUnwrap<Node>();
     return WebElement(coreNode->shadowHost());
 }
 
-WebNode::WebNode(const PassRefPtr<Node>& node)
+WebNode::WebNode(const PassRefPtrWillBeRawPtr<Node>& node)
     : m_private(node)
 {
 }
 
-WebNode& WebNode::operator=(const PassRefPtr<Node>& node)
+WebNode& WebNode::operator=(const PassRefPtrWillBeRawPtr<Node>& node)
 {
     m_private = node;
     return *this;
 }
 
-WebNode::operator PassRefPtr<Node>() const
+WebNode::operator PassRefPtrWillBeRawPtr<Node>() const
 {
     return m_private.get();
 }
 
 } // namespace blink