[builtins] Migrate Number predicates and make them optimizable.

src/js/prologue.js

 // Copyright 2015 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, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 172 matching lines @@
   var expose_list = [
     "AddBoundMethod",
     "ArrayToString",
     "AsyncFunctionNext",
     "AsyncFunctionThrow",
     "GetIterator",
     "GetMethod",
     "GlobalPromise",
     "IntlParseDate",
     "IntlParseNumber",
-    "IsNaN",
     "MapEntries",
     "MapIterator",
     "MapIteratorNext",
     "MaxSimple",
     "MinSimple",
     "NewPromiseCapability",
-    "NumberIsInteger",
     "PerformPromiseThen",
     "PromiseCastResolved",
     "PromiseThen",
     "RegExpSubclassExecJS",
     "RegExpSubclassMatch",
     "RegExpSubclassReplace",
     "RegExpSubclassSearch",
     "RegExpSubclassSplit",
     "RegExpSubclassTest",
     "RejectPromise",
@@ skipping 142 matching lines @@
 
 extrasUtils.uncurryThis = function uncurryThis(func) {
   return function(thisArg, ...args) {
     return %reflect_apply(func, thisArg, args);
   };
 };
 
 %ToFastProperties(extrasUtils);
 
 })