[builtins] Begin removing CodeFactory accessors

src/builtins/builtins-async-iterator-gen.cc

 // Copyright 2017 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/builtins/builtins-async-gen.h"
 #include "src/builtins/builtins-utils-gen.h"
 #include "src/builtins/builtins.h"
 #include "src/code-factory.h"
 #include "src/code-stub-assembler.h"
 #include "src/frames-inl.h"
@@ skipping 185 matching lines @@
   }
 
   BIND(&merge);
   // Ensure `iterResult.done` is a Boolean.
   GotoIf(TaggedIsSmi(var_done.value()), &to_boolean);
   Branch(IsBoolean(var_done.value()), &done, &to_boolean);
 
   BIND(&to_boolean);
   {
     Node* const result =
-        CallStub(CodeFactory::ToBoolean(isolate()), context, var_done.value());
+        CallBuiltin(Builtins::kToBoolean, context, var_done.value());
     var_done.Bind(result);
     Goto(&done);
   }
 
   BIND(&done);
   return std::make_pair(var_value.value(), var_done.value());
 }
 }  // namespace
 
 // https://tc39.github.io/proposal-async-iteration/
@@ skipping 48 matching lines @@
                                 Label* if_exception) { Goto(if_exception); };
 
   Generate_AsyncFromSyncIteratorMethod(
       context, iterator, reason, factory()->throw_string(), if_throw_undefined,
       "[Async-from-Sync Iterator].prototype.throw", Label::kNonDeferred,
       reason);
 }
 
 }  // namespace internal
 }  // namespace v8