[promises] Move PromiseHasUserDefinedRejectHandler to c++

src/js/async-await.js

 // Copyright 2016 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.
 
 (function(global, utils, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 14 matching lines @@
   PromiseCreate = from.PromiseCreate;
   RejectPromise = from.RejectPromise;
 });
 
 var promiseAsyncStackIDSymbol =
     utils.ImportNow("promise_async_stack_id_symbol");
 var promiseHandledBySymbol =
     utils.ImportNow("promise_handled_by_symbol");
 var promiseForwardingHandlerSymbol =
     utils.ImportNow("promise_forwarding_handler_symbol");
-var promiseHandledHintSymbol =
-    utils.ImportNow("promise_handled_hint_symbol");
 
 // -------------------------------------------------------------------
 
 function PromiseCastResolved(value) {
   // TODO(caitp): This is non spec compliant. See v8:5694.
   if (%is_promise(value)) {
     return value;
   } else {
     var promise = PromiseCreate();
     %promise_resolve(promise, value);
@@ skipping 60 matching lines @@
 // Called by the parser from the desugaring of 'await' when catch
 // prediction indicates no locally surrounding catch block
 function AsyncFunctionAwaitUncaught(generator, awaited, outerPromise) {
   AsyncFunctionAwait(generator, awaited, outerPromise);
 }
 
 // Called by the parser from the desugaring of 'await' when catch
 // prediction indicates that there is a locally surrounding catch block
 function AsyncFunctionAwaitCaught(generator, awaited, outerPromise) {
   if (DEBUG_IS_ACTIVE && %is_promise(awaited)) {
-    SET_PRIVATE(awaited, promiseHandledHintSymbol, true);
+    %PromiseMarkHandledHint(awaited);
   }
   AsyncFunctionAwait(generator, awaited, outerPromise);
 }
 
 // How the parser rejects promises from async/await desugaring
 function RejectPromiseNoDebugEvent(promise, reason) {
   return RejectPromise(promise, reason, false);
 }
 
 function AsyncFunctionPromiseCreate() {
@@ skipping 30 matching lines @@
 
 %InstallToContext([
   "async_function_await_caught", AsyncFunctionAwaitCaught,
   "async_function_await_uncaught", AsyncFunctionAwaitUncaught,
   "reject_promise_no_debug_event", RejectPromiseNoDebugEvent,
   "async_function_promise_create", AsyncFunctionPromiseCreate,
   "async_function_promise_release", AsyncFunctionPromiseRelease,
 ]);
 
 })