Oilpan: Replace RefPtrs to Node and its subclasses in core/dom/ with Oilpan transtion types.

Source/core/inspector/DOMEditor.cpp

Index: Source/core/inspector/DOMEditor.cpp
diff --git a/Source/core/inspector/DOMEditor.cpp b/Source/core/inspector/DOMEditor.cpp
index 24a80153d91cdfc156882f200dc12bf09143d527..b62682e8fe0036dce8d8dce6b7a5fbb54b841418 100644
--- a/Source/core/inspector/DOMEditor.cpp
+++ b/Source/core/inspector/DOMEditor.cpp
@@ -305,13 +305,17 @@ public:
 
     virtual bool undo(ExceptionState& exceptionState) OVERRIDE
     {
-        m_parentNode->replaceChild(m_oldNode, m_newNode.get(), exceptionState);
+        // FIXME: Oilpan: The first .get() is unnecessary if m_oldNode is a
+        // Persistent or a Member.
+        m_parentNode->replaceChild(m_oldNode.get(), m_newNode.get(), exceptionState);
         return !exceptionState.hadException();
     }
 
     virtual bool redo(ExceptionState& exceptionState) OVERRIDE
     {
-        m_parentNode->replaceChild(m_newNode, m_oldNode.get(), exceptionState);
+        // FIXME: Oilpan: The first .get() is unnecessary if m_newNode is a
+        // Persistent or a Member.
+        m_parentNode->replaceChild(m_newNode.get(), m_oldNode.get(), exceptionState);
         return !exceptionState.hadException();
     }