[builtins] Begin removing CodeFactory accessors

src/builtins/builtins-iterator-gen.cc

Index: src/builtins/builtins-iterator-gen.cc
diff --git a/src/builtins/builtins-iterator-gen.cc b/src/builtins/builtins-iterator-gen.cc
index fd3dcb658a7743d634976ae5f72f68bc4cf127cc..3a8732948362c858587ab41d1111cd05455df374 100644
--- a/src/builtins/builtins-iterator-gen.cc
+++ b/src/builtins/builtins-iterator-gen.cc
@@ -77,7 +77,7 @@ Node* IteratorBuiltinsAssembler::IteratorStep(Node* context, Node* iterator,
     Branch(IsBoolean(done), &return_result, &to_boolean);
 
     BIND(&to_boolean);
-    var_done.Bind(CallStub(CodeFactory::ToBoolean(isolate()), context, done));
+    var_done.Bind(CallBuiltin(Builtins::kToBoolean, context, done));
     Goto(&return_result);
   }