[modules] Simplify installation of @@toStringTag on namespace objects.

src/bootstrapper.cc

 // Copyright 2014 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/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/base/ieee754.h"
 #include "src/code-stubs.h"
@@ skipping 2122 matching lines @@
 
   {  // -- J S M o d u l e N a m e s p a c e
     Handle<Map> map =
         factory->NewMap(JS_MODULE_NAMESPACE_TYPE, JSModuleNamespace::kSize);
     Map::SetPrototype(map, isolate->factory()->null_value());
     native_context()->set_js_module_namespace_map(*map);
 
     // Install @@toStringTag.
     PropertyAttributes attribs =
         static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY);
-    Handle<AccessorInfo> toStringTag =
-        Accessors::ModuleNamespaceToStringTagInfo(isolate, attribs);
-    AccessorConstantDescriptor d(factory->to_string_tag_symbol(), toStringTag,
-                                 attribs);
+    DataConstantDescriptor d(factory->to_string_tag_symbol(),
+                             factory->NewStringFromAsciiChecked("Module"),
+                             attribs);
     Map::EnsureDescriptorSlack(map, 1);
     map->AppendDescriptor(&d);
 
     // TODO(neis): Implement and install @@iterator.
   }
 
   {  // -- I t e r a t o r R e s u l t
     Handle<Map> map =
         factory->NewMap(JS_OBJECT_TYPE, JSIteratorResult::kSize);
     Map::SetPrototype(map, isolate->initial_object_prototype());
@@ skipping 2225 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8