Rename a few Member and Persistent methods to make the transition

Source/heap/Heap.h

Index: Source/heap/Heap.h
diff --git a/Source/heap/Heap.h b/Source/heap/Heap.h
index b9162f624d365650cd2f6f6c167db6009fbafb64..9970c358e22888908390f0f7cfbddb59abe1ffb3 100644
--- a/Source/heap/Heap.h
+++ b/Source/heap/Heap.h
@@ -1482,7 +1482,7 @@ template<bool markWeakMembersStrongly, typename T, typename Traits>
 struct CollectionBackingTraceTrait<true, false, markWeakMembersStrongly, Member<T>, Traits> {
     static void mark(WebCore::Visitor* visitor, Member<T> self)
     {
-        visitor->mark(self.raw());
+        visitor->mark(self.get());
     }
 };
 
@@ -1496,7 +1496,7 @@ struct CollectionBackingTraceTrait<false, true, true, WeakMember<T>, Traits> {
         // backing only through the hash table. Reaching it in any other way
         // makes it impossible to update the size and deleted slot count of the
         // table, and exposes us to weak processing during iteration issues.
-        visitor->mark(self.raw());
+        visitor->mark(self.get());
     }
 };