[builtins] Add ReturnReceiver builtin

src/js/promise.js

Index: src/js/promise.js
diff --git a/src/js/promise.js b/src/js/promise.js
index 7cd789295644f8be560f8c85346fd9c279720024..adcc3e3e5bba1bd8adde49fcafd9155b694b4138 100644
--- a/src/js/promise.js
+++ b/src/js/promise.js
@@ -23,8 +23,6 @@ var promiseHandledHintSymbol =
 var promiseRawSymbol = utils.ImportNow("promise_raw_symbol");
 var promiseStateSymbol = utils.ImportNow("promise_state_symbol");
 var promiseResultSymbol = utils.ImportNow("promise_result_symbol");
-var SpeciesConstructor;
-var speciesSymbol = utils.ImportNow("species_symbol");
 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
 var ObjectHasOwnProperty;
 var GlobalPromise = global.Promise;
@@ -32,7 +30,6 @@ var PromiseThen = GlobalPromise.prototype.then;
 
 utils.Import(function(from) {
   ObjectHasOwnProperty = from.ObjectHasOwnProperty;
-  SpeciesConstructor = from.SpeciesConstructor;
 });
 
 // -------------------------------------------------------------------
@@ -343,11 +340,6 @@ function MarkPromiseAsHandled(promise) {
   %PromiseMarkAsHandled(promise);
 }
 
-
-function PromiseSpecies() {
-  return this;
-}
-
 // -------------------------------------------------------------------
 // Install exported functions.
 
@@ -358,8 +350,6 @@ utils.InstallFunctions(GlobalPromise, DONT_ENUM, [
   "resolve", PromiseResolve
 ]);
 
-utils.InstallGetter(GlobalPromise, speciesSymbol, PromiseSpecies);
-
 %SetCode(GlobalPromise.prototype.catch, PromiseCatch);
 
 %InstallToContext([