[oilpan] The Node hierarchy should have correct accept method chains

Source/core/html/HTMLScriptElement.cpp

Index: Source/core/html/HTMLScriptElement.cpp
diff --git a/Source/core/html/HTMLScriptElement.cpp b/Source/core/html/HTMLScriptElement.cpp
index 40f85e5a2d17770de63b65b5bcd615f8b28a50c8..c1d951c997ad28d4c1bc68a619b11a3c025eb526 100644
--- a/Source/core/html/HTMLScriptElement.cpp
+++ b/Source/core/html/HTMLScriptElement.cpp
@@ -176,6 +176,9 @@ PassRefPtr<Element> HTMLScriptElement::cloneElementWithoutAttributesAndChildren(
     return adoptRef(new HTMLScriptElement(tagQName(), document(), false, alreadyStarted()));
 }
 
+// FIXME(oilpan): There is multiple inheritance going on here. This is a ScriptElement as
+// well as an HTMLElement. The ScriptElement has a Element member that we should deal with
+// as well. We need to treat ScriptElement in the same way that we did for TreeScope.
 void HTMLScriptElement::acceptHeapVisitor(Visitor* visitor) const
 {
     HTMLElement::acceptHeapVisitor(visitor);