Oilpan: Replace RefPtr<Node> in V8DocumentCustom with an Oilpan transition type.

Source/bindings/v8/custom/V8DocumentCustom.cpp

Index: Source/bindings/v8/custom/V8DocumentCustom.cpp
diff --git a/Source/bindings/v8/custom/V8DocumentCustom.cpp b/Source/bindings/v8/custom/V8DocumentCustom.cpp
index 156c32740a7ba9afa620333c5054dbccdf38a840..930ba77f07d96c554d7f78fe7c71e8a560300b12 100644
--- a/Source/bindings/v8/custom/V8DocumentCustom.cpp
+++ b/Source/bindings/v8/custom/V8DocumentCustom.cpp
@@ -64,7 +64,7 @@ void V8Document::evaluateMethodCustom(const v8::FunctionCallbackInfo<v8::Value>&
     ASSERT(document);
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "evaluate", "Document", info.Holder(), info.GetIsolate());
     TOSTRING_VOID(V8StringResource<>, expression, info[0]);
-    RefPtr<Node> contextNode = V8Node::toNativeWithTypeCheck(info.GetIsolate(), info[1]);
+    RefPtrWillBeRawPtr<Node> contextNode = V8Node::toNativeWithTypeCheck(info.GetIsolate(), info[1]);
 
     const int resolverArgumentIndex = 2;
     RefPtrWillBeRawPtr<XPathNSResolver> resolver = toXPathNSResolver(info[resolverArgumentIndex], info.GetIsolate());