Use import/export for more functions (instead of js builtins object).

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/utils/random-number-generator.h"
 #include "src/code-stubs.h"
@@ skipping 2023 matching lines @@
   builtins_fun->initial_map()->set_dictionary_map(true);
   builtins_fun->initial_map()->set_prototype(heap()->null_value());
 
   // Allocate the builtins object.
   Handle<JSBuiltinsObject> builtins =
       Handle<JSBuiltinsObject>::cast(factory()->NewGlobalObject(builtins_fun));
   builtins->set_builtins(*builtins);
   builtins->set_native_context(*native_context());
   builtins->set_global_proxy(native_context()->global_proxy());
 
-
-  // Set up the 'builtin' property, which refers to the js builtins object.
-  static const PropertyAttributes attributes =
-      static_cast<PropertyAttributes>(READ_ONLY | DONT_DELETE);
-  Handle<String> builtins_string =
-      factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("builtins"));
-  JSObject::AddProperty(builtins, builtins_string, builtins, attributes);
-
   // Set up the reference from the global object to the builtins object.
   JSGlobalObject::cast(native_context()->global_object())->
       set_builtins(*builtins);
 
   // Create a bridge function that has context in the native context.
   Handle<JSFunction> bridge = factory()->NewFunction(factory()->empty_string());
   DCHECK(bridge->context() == *isolate()->native_context());
 
   // Allocate the builtins context.
   Handle<Context> context =
@@ skipping 1242 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8