Remove unnecessary .get() in DOMEditor::ReplaceChildNodeAction.

BUG=

Review URL: https://codereview.chromium.org/335583003

git-svn-id: svn://svn.chromium.org/blink/trunk@176020 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/inspector/DOMEditor.cpp

@@ -350,17 +350,13 @@ public:
 
     virtual bool undo(ExceptionState& exceptionState) OVERRIDE
     {
-        // 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);
+        m_parentNode->replaceChild(m_oldNode, m_newNode.get(), exceptionState);
         return !exceptionState.hadException();
     }
 
     virtual bool redo(ExceptionState& exceptionState) OVERRIDE
     {
-        // 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);
+        m_parentNode->replaceChild(m_newNode, m_oldNode.get(), exceptionState);
         return !exceptionState.hadException();
     }