[promises] Remove IsPromise

src/debug/mirrors.js

 // Copyright 2006-2012 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) {
 "use strict";
 
 // ----------------------------------------------------------------------------
 // Imports
 
@@ skipping 88 matching lines @@
   ClearMirrorCache();
 }
 
 
 function ClearMirrorCache(value) {
   next_handle_ = 0;
   mirror_cache_ = [];
 }
 
 
-function ObjectIsPromise(value) {
-  return IS_RECEIVER(value) &&
-         !IS_UNDEFINED(%DebugGetProperty(value, promiseStateSymbol));
-}
-
-
 /**
  * Returns the mirror for a specified value or object.
  *
  * @param {value or Object} value the value or object to retrieve the mirror for
  * @param {boolean} transient indicate whether this object is transient and
  *    should not be added to the mirror cache. The default is not transient.
  * @returns {Mirror} the mirror reflects the passed value or object
  */
 function MakeMirror(value, opt_transient) {
   var mirror;
@@ skipping 36 matching lines @@
   } else if (IS_ERROR(value)) {
     mirror = new ErrorMirror(value);
   } else if (IS_SCRIPT(value)) {
     mirror = new ScriptMirror(value);
   } else if (IS_MAP(value) || IS_WEAKMAP(value)) {
     mirror = new MapMirror(value);
   } else if (IS_SET(value) || IS_WEAKSET(value)) {
     mirror = new SetMirror(value);
   } else if (IS_MAP_ITERATOR(value) || IS_SET_ITERATOR(value)) {
     mirror = new IteratorMirror(value);
-  } else if (ObjectIsPromise(value)) {
+  } else if (%is_promise(value)) {
     mirror = new PromiseMirror(value);
   } else if (IS_GENERATOR(value)) {
     mirror = new GeneratorMirror(value);
   } else {
     mirror = new ObjectMirror(value, MirrorType.OBJECT_TYPE, opt_transient);
   }
 
   if (mirror_cache_enabled_) mirror_cache_[mirror.handle()] = mirror;
   return mirror;
 }
@@ skipping 2904 matching lines @@
 // Functions needed by the debugger runtime.
 utils.InstallFunctions(utils, DONT_ENUM, [
   "ClearMirrorCache", ClearMirrorCache
 ]);
 
 // Export to debug.js
 utils.Export(function(to) {
   to.MirrorType = MirrorType;
 });
 })