[debugger] ScopeIterator should unwrap debug-evaluate contexts.

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index 49df731f18cde8d3657c73def9c53584b96d92e2..2fa290143756eb52974ab7e75efc1514ff78159f 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -394,6 +394,8 @@ class Factory final {
   // JSObject that should have a memento pointing to the allocation site.
   Handle<JSObject> NewJSObjectWithMemento(Handle<JSFunction> constructor,
                                           Handle<AllocationSite> site);
+  // JSObject without a prototype.
+  Handle<JSObject> NewJSObjectWithNullProto();
 
   // Global objects are pretenured and initialized based on a constructor.
   Handle<JSGlobalObject> NewJSGlobalObject(Handle<JSFunction> constructor);