Implement V8 extras utils object

src/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) {
+(function(global, utils, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 // Imports
 
 var InternalArray = utils.InternalArray;
 var promiseHasHandlerSymbol =
@@ skipping 365 matching lines @@
 %InstallToContext([
   "promise_catch", PromiseCatch,
   "promise_chain", PromiseChain,
   "promise_create", PromiseCreate,
   "promise_has_user_defined_reject_handler", PromiseHasUserDefinedRejectHandler,
   "promise_reject", PromiseReject,
   "promise_resolve", PromiseResolve,
   "promise_then", PromiseThen,
 ]);
 
+// This allows extras to create promises quickly without building extra
+// resolve/reject closures, and allows them to later resolve and reject any
+// promise without having to hold on to those closures forever.
+utils.InstallFunctions(extrasUtils, 0, [
+  "createPromise", PromiseCreate,
+  "resolvePromise", PromiseResolve,
+  "rejectPromise", PromiseReject
+]);
+
 })