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

Source/core/dom/RangeTest.cpp

Index: Source/core/dom/RangeTest.cpp
diff --git a/Source/core/dom/RangeTest.cpp b/Source/core/dom/RangeTest.cpp
index 48f51bb83d202dd46b0043924ba880dc2f2c931b..a96b5c2dc6a21da7dee8a9147380c84c6cd25a0f 100644
--- a/Source/core/dom/RangeTest.cpp
+++ b/Source/core/dom/RangeTest.cpp
@@ -35,7 +35,7 @@ private:
 void RangeTest::SetUp()
 {
     m_document = HTMLDocument::create();
-    RefPtr<HTMLHtmlElement> html = HTMLHtmlElement::create(*m_document);
+    RefPtrWillBeRawPtr<HTMLHtmlElement> html = HTMLHtmlElement::create(*m_document);
     html->appendChild(HTMLBodyElement::create(*m_document));
     m_document->appendChild(html.release());
 }