[inspector] introduced stepIntoAsync for chained callbacks

src/js/promise.js

 // Copyright 2012 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 77 matching lines @@
       %MoveArrayContents(resolutions, valuesArray);
       %_Call(deferred.resolve, UNDEFINED, valuesArray);
     }
 
   } catch (e) {
     %_Call(deferred.reject, UNDEFINED, e);
   }
   return deferred.promise;
 }
 
+%DebugMarkPromiseAllOrRace(PromiseAll);
+
 // ES#sec-promise.race
 // Promise.race ( iterable )
 function PromiseRace(iterable) {
   if (!IS_RECEIVER(this)) {
     throw %make_type_error(kCalledOnNonObject, PromiseRace);
   }
 
   // false debugEvent so that forwarding the rejection through race does not
   // trigger redundant ExceptionEvents
   var deferred = %new_promise_capability(this, false);
@@ skipping 14 matching lines @@
       if (instrumenting && %is_promise(throwawayPromise)) {
         SET_PRIVATE(throwawayPromise, promiseHandledBySymbol, deferred.promise);
       }
     }
   } catch (e) {
     %_Call(deferred.reject, UNDEFINED, e);
   }
   return deferred.promise;
 }
 
+%DebugMarkPromiseAllOrRace(PromiseRace);
+
 // -------------------------------------------------------------------
 // Install exported functions.
 
 utils.InstallFunctions(GlobalPromise, DONT_ENUM, [
   "all", PromiseAll,
   "race", PromiseRace,
 ]);
 
 %InstallToContext([
   "promise_id_resolve_handler", PromiseIdResolveHandler,
   "promise_id_reject_handler", PromiseIdRejectHandler
 ]);
 
 })