[builtins] Introduce DeleteProperty builtin

src/js/array.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, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 384 matching lines @@
 
   var array = TO_OBJECT(this);
   var n = TO_LENGTH(array.length);
   if (n == 0) {
     array.length = n;
     return;
   }
 
   n--;
   var value = array[n];
-  %DeleteProperty_Strict(array, n);
+  delete array[n];
   array.length = n;
   return value;
 }
 
 
 // Appends the arguments to the end of the array and returns the new
 // length of the array. See ECMA-262, section 15.4.4.7.
 function ArrayPush() {
   CHECK_OBJECT_COERCIBLE(this, "Array.prototype.push");
 
@@ skipping 1037 matching lines @@
   "array_pop", ArrayPop,
   "array_push", ArrayPush,
   "array_shift", ArrayShift,
   "array_splice", ArraySplice,
   "array_slice", ArraySlice,
   "array_unshift", ArrayUnshift,
   "array_values_iterator", IteratorFunctions.values,
 ]);
 
 });