[builtins] Add ReturnReceiver builtin

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 1865 matching lines @@
                              Builtins::kPromiseThen, 2, true);
     JSObject::AddProperty(prototype, isolate->factory()->then_string(),
                           promise_then, DONT_ENUM);
     InstallWithIntrinsicDefaultProto(isolate, promise_then,
                                      Context::PROMISE_THEN_INDEX);
 
     // TODO(gsathya): Move to TF
     SimpleInstallFunction(prototype, "catch", Builtins::kIllegal, 1, true,
                           DONT_ENUM);
 
+    SimpleInstallGetter(promise_fun, factory->symbol_species_string(),
+                        factory->species_symbol(),
+                        Builtins::kPromiseSpeciesGetter, true);
+
     Handle<Map> prototype_map(prototype->map());
     Map::SetShouldBeFastPrototypeMap(prototype_map, true, isolate);
 
     // Store the initial Promise.prototype map. This is used in fast-path
     // checks. Do not alter the prototype after this point.
     native_context()->set_promise_prototype_map(*prototype_map);
 
     {  // Internal: PromiseInternalConstructor
       Handle<JSFunction> function =
           SimpleCreateFunction(isolate, factory->empty_string(),
@@ skipping 167 matching lines @@
       Map::SetShouldBeFastPrototypeMap(prototype_map, true, isolate);
 
       // Store the initial RegExp.prototype map. This is used in fast-path
       // checks. Do not alter the prototype after this point.
       native_context()->set_regexp_prototype_map(*prototype_map);
     }
 
     {
       // RegExp getters and setters.
 
-      SimpleInstallGetter(regexp_fun,
-                          factory->InternalizeUtf8String("[Symbol.species]"),
+      SimpleInstallGetter(regexp_fun, factory->symbol_species_string(),
                           factory->species_symbol(),
                           Builtins::kRegExpPrototypeSpeciesGetter, true);
 
       // Static properties set by a successful match.
 
       const PropertyAttributes no_enum = DONT_ENUM;
       SimpleInstallGetterSetter(regexp_fun, factory->input_string(),
                                 Builtins::kRegExpInputGetter,
                                 Builtins::kRegExpInputSetter, no_enum);
       SimpleInstallGetterSetter(
@@ skipping 2571 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8