[builtins] Add ReturnReceiver builtin

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index e20baf0ec8e6975961807fb487cc88df78825f90..7747520a5c700a85ce1ef4c889cddc08e6524ec5 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1883,6 +1883,10 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     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);
 
@@ -2070,8 +2074,7 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
     {
       // RegExp getters and setters.
 
-      SimpleInstallGetter(regexp_fun,
-                          factory->InternalizeUtf8String("[Symbol.species]"),
+      SimpleInstallGetter(regexp_fun, factory->symbol_species_string(),
                           factory->species_symbol(),
                           Builtins::kRegExpPrototypeSpeciesGetter, true);