[inspector] introduced stepIntoAsync for chained callbacks

src/bootstrapper.cc

 // Copyright 2014 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.
 
 #include "src/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/base/ieee754.h"
 #include "src/code-stubs.h"
@@ skipping 1905 matching lines @@
     InstallWithIntrinsicDefaultProto(isolate, promise_then,
                                      Context::PROMISE_THEN_INDEX);
 
     Handle<JSFunction> promise_catch = SimpleInstallFunction(
         prototype, "catch", Builtins::kPromiseCatch, 1, true, DONT_ENUM);
     InstallWithIntrinsicDefaultProto(isolate, promise_catch,
                                      Context::PROMISE_CATCH_INDEX);
 
     InstallSpeciesGetter(promise_fun);
 
-    SimpleInstallFunction(promise_fun, "resolve", Builtins::kPromiseResolve, 1,
-                          true, DONT_ENUM);
+    Handle<JSFunction> resolve = SimpleInstallFunction(
+        promise_fun, "resolve", Builtins::kPromiseResolve, 1, true, DONT_ENUM);
+    resolve->shared()->set_is_promise_builtin(true);
 
-    SimpleInstallFunction(promise_fun, "reject", Builtins::kPromiseReject, 1,
-                          true, DONT_ENUM);
+    Handle<JSFunction> reject = SimpleInstallFunction(
+        promise_fun, "reject", Builtins::kPromiseReject, 1, true, DONT_ENUM);
+    reject->shared()->set_is_promise_builtin(true);
 
     Handle<Map> prototype_map(prototype->map());
     Map::SetShouldBeFastPrototypeMap(prototype_map, true, isolate);
 
     // Store the initial Promise.prototype map. This is used in fast-path
     // checks. Do not alter the prototype after this point.
     native_context()->set_promise_prototype_map(*prototype_map);
 
     {  // Internal: PromiseInternalConstructor
        // Also exposed as extrasUtils.createPromise.
@@ skipping 1458 matching lines @@
 
     JSFunction::SetPrototype(async_function_constructor,
                              async_function_prototype);
 
     {
       Handle<JSFunction> function =
           SimpleCreateFunction(isolate, factory->empty_string(),
                                Builtins::kAsyncFunctionAwaitCaught, 3, false);
       InstallWithIntrinsicDefaultProto(
           isolate, function, Context::ASYNC_FUNCTION_AWAIT_CAUGHT_INDEX);
+      function->shared()->set_is_promise_builtin(true);
     }
 
     {
       Handle<JSFunction> function =
           SimpleCreateFunction(isolate, factory->empty_string(),
                                Builtins::kAsyncFunctionAwaitUncaught, 3, false);
       InstallWithIntrinsicDefaultProto(
           isolate, function, Context::ASYNC_FUNCTION_AWAIT_UNCAUGHT_INDEX);
+      function->shared()->set_is_promise_builtin(true);
     }
 
     {
       Handle<Code> code =
           isolate->builtins()->AsyncFunctionAwaitRejectClosure();
       Handle<SharedFunctionInfo> info =
           factory->NewSharedFunctionInfo(factory->empty_string(), code, false);
       info->set_internal_formal_parameter_count(1);
       info->set_length(1);
       native_context->set_async_function_await_reject_shared_fun(*info);
@@ skipping 1472 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8