[promises] Remove unneeded PromiseCreate function from promise.js

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 1897 matching lines @@
                           true, DONT_ENUM);
 
     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.
       Handle<JSFunction> function =
           SimpleCreateFunction(isolate, factory->empty_string(),
-                               Builtins::kPromiseInternalConstructor, 1, false);
+                               Builtins::kPromiseInternalConstructor, 1, true);
       InstallWithIntrinsicDefaultProto(
           isolate, function, Context::PROMISE_INTERNAL_CONSTRUCTOR_INDEX);
     }
 
     {  // Internal: IsPromise
       Handle<JSFunction> function = SimpleCreateFunction(
           isolate, factory->empty_string(), Builtins::kIsPromise, 1, false);
       InstallWithIntrinsicDefaultProto(isolate, function,
                                        Context::IS_PROMISE_INDEX);
     }
 
     {  // Internal: PerformPromiseThen
       Handle<JSFunction> function =
           SimpleCreateFunction(isolate, factory->empty_string(),
                                Builtins::kPerformPromiseThen, 4, false);
       InstallWithIntrinsicDefaultProto(isolate, function,
                                        Context::PERFORM_PROMISE_THEN_INDEX);
     }
 
     {  // Internal: ResolvePromise
-      Handle<JSFunction> function =
-          SimpleCreateFunction(isolate, factory->empty_string(),
-                               Builtins::kResolvePromise, 2, false);
+       // Also exposed as extrasUtils.resolvePromise.
+      Handle<JSFunction> function = SimpleCreateFunction(
+          isolate, factory->empty_string(), Builtins::kResolvePromise, 2, true);
       InstallWithIntrinsicDefaultProto(isolate, function,
                                        Context::PROMISE_RESOLVE_INDEX);
     }
 
     {  // Internal: PromiseHandle
       Handle<JSFunction> function = SimpleCreateFunction(
           isolate, factory->empty_string(), Builtins::kPromiseHandle, 6, true);
       InstallWithIntrinsicDefaultProto(isolate, function,
                                        Context::PROMISE_HANDLE_INDEX);
       // Set up catch prediction
@@ skipping 1677 matching lines @@
   native_context()->set_natives_utils_object(*utils);
 
   // Set up the extras utils object as a shared container between native
   // scripts and extras. (Extras consume things added there by native scripts.)
   Handle<JSObject> extras_utils =
       factory()->NewJSObject(isolate()->object_function());
   native_context()->set_extras_utils_object(*extras_utils);
 
   InstallInternalArray(extras_utils, "InternalPackedArray", FAST_ELEMENTS);
 
+  InstallFunction(extras_utils, isolate()->promise_internal_constructor(),
+                  factory()->NewStringFromAsciiChecked("createPromise"));
   InstallFunction(extras_utils, isolate()->promise_resolve(),
                   factory()->NewStringFromAsciiChecked("resolvePromise"));
 
   int builtin_index = Natives::GetDebuggerCount();
   // Only run prologue.js and runtime.js at this point.
   DCHECK_EQ(builtin_index, Natives::GetIndex("prologue"));
   if (!Bootstrapper::CompileBuiltin(isolate(), builtin_index++)) return false;
   DCHECK_EQ(builtin_index, Natives::GetIndex("runtime"));
   if (!Bootstrapper::CompileBuiltin(isolate(), builtin_index++)) return false;
 
@@ skipping 1091 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8