Make all global private symbols own symbols.

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.
 
 "use strict";
 
 // This file relies on the fact that the following declaration has been made
 // in runtime.js:
 // var $Object = global.Object
 // var $WeakMap = global.WeakMap
@@ skipping 128 matching lines @@
   function PromiseIdRejectHandler(r) { throw r }
 
   function PromiseNopResolver() {}
 
   // -------------------------------------------------------------------
   // Define exported functions.
 
   // For bootstrapper.
 
   IsPromise = function IsPromise(x) {
-    return IS_SPEC_OBJECT(x) && HAS_PRIVATE(x, promiseStatus);
+    return IS_SPEC_OBJECT(x) && HAS_DEFINED_PRIVATE(x, promiseStatus);
   }
 
   PromiseCreate = function PromiseCreate() {
     return new $Promise(PromiseNopResolver)
   }
 
   PromiseResolve = function PromiseResolve(promise, x) {
     PromiseDone(promise, +1, x, promiseOnResolve)
   }
 
   PromiseReject = function PromiseReject(promise, r) {
     // Check promise status to confirm that this reject has an effect.
     // Check promiseDebug property to avoid duplicate event.
     if (DEBUG_IS_ACTIVE &&
         GET_PRIVATE(promise, promiseStatus) == 0 &&
-        !HAS_PRIVATE(promise, promiseDebug)) {
+        !HAS_DEFINED_PRIVATE(promise, promiseDebug)) {
       %DebugPromiseRejectEvent(promise, r);
     }
     PromiseDone(promise, -1, r, promiseOnReject)
   }
 
   // Convenience.
 
   function PromiseDeferred() {
     if (this === $Promise) {
       // Optimized case, avoid extra closure.
@@ skipping 180 matching lines @@
     "race", PromiseOne,
     "resolve", PromiseCast
   ]);
   InstallFunctions($Promise.prototype, DONT_ENUM, [
     "chain", PromiseChain,
     "then", PromiseThen,
     "catch", PromiseCatch
   ]);
 
 })();