[oilpan] Rename visit to mark.

Source/core/html/HTMLCollection.h

Index: Source/core/html/HTMLCollection.h
diff --git a/Source/core/html/HTMLCollection.h b/Source/core/html/HTMLCollection.h
index 266210af04dbd25920c8231b4362321c4f4b7a16..d0e8820ea1df97d3944bf5b97b8746527f0e6230 100644
--- a/Source/core/html/HTMLCollection.h
+++ b/Source/core/html/HTMLCollection.h
@@ -76,8 +76,6 @@ protected:
 
     virtual void updateNameCache() const;
 
-    // FIXME(oilpan): Move NodeList to the heap and visit members in NodeCacheMap.
-    // See more discussion in https://codereview.chromium.org/23005018/
     typedef HashMap<AtomicStringImpl*, Member<HeapVector<Member<Element> > > > NodeCacheMap;
     HeapVector<Member<Element> >* idCache(const AtomicString& name) const { return m_idCache.get(name.impl()); }
     HeapVector<Member<Element> >* nameCache(const AtomicString& name) const { return m_nameCache.get(name.impl()); }