[promises] Move PromiseReject to c++

src/js/async-await.js

Index: src/js/async-await.js
diff --git a/src/js/async-await.js b/src/js/async-await.js
index a1cac0d5cd62a6bb6850197db285460cf06681ea..e5376ecdf5c960ad4e54f10783cca7fe942f45a7 100644
--- a/src/js/async-await.js
+++ b/src/js/async-await.js
@@ -19,8 +19,9 @@ var NewPromiseCapability;
 var PerformPromiseThen;
 var PromiseCreate;
 var PromiseNextMicrotaskID;
-var RejectPromise;
+var PromiseSet;
 var ResolvePromise;
+var kPromiseRejected;
 
 utils.Import(function(from) {
   AsyncFunctionNext = from.AsyncFunctionNext;
@@ -30,8 +31,9 @@ utils.Import(function(from) {
   NewPromiseCapability = from.NewPromiseCapability;
   PerformPromiseThen = from.PerformPromiseThen;
   PromiseCreate = from.PromiseCreate;
-  RejectPromise = from.RejectPromise;
+  PromiseSet = from.PromiseSet;
   ResolvePromise = from.ResolvePromise;
+  kPromiseRejected = from.kPromiseRejected;
 });
 
 var promiseAsyncStackIDSymbol =
@@ -130,7 +132,8 @@ function AsyncFunctionAwaitCaught(generator, awaited, outerPromise) {
 
 // How the parser rejects promises from async/await desugaring
 function RejectPromiseNoDebugEvent(promise, reason) {
-  return RejectPromise(promise, reason, false);
+  %PromiseReject(promise, reason, false);
+  PromiseSet(promise, kPromiseRejected, reason);
 }
 
 function AsyncFunctionPromiseCreate() {