Make array __proto__ manipulations not disturb the species protector

test/mjsunit/harmony/array-species-delete.js

Index: test/mjsunit/harmony/array-species-delete.js
diff --git a/test/mjsunit/harmony/array-species-delete.js b/test/mjsunit/harmony/array-species-delete.js
index bccf3a4df9d1adee9162f6c9ffd273998e478136..ba49414069de865c8ff94167138f316f71d83e25 100644
--- a/test/mjsunit/harmony/array-species-delete.js
+++ b/test/mjsunit/harmony/array-species-delete.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-species
+// Flags: --harmony-species --allow-natives-syntax
 
 // Overwriting the constructor of an instance updates the protector
 
@@ -19,6 +19,7 @@ class MyArray extends Array { }
 
 Object.prototype[Symbol.species] = MyArray;
 delete Array[Symbol.species];
+assertFalse(%SpeciesProtector());
 
 assertEquals(MyArray, x.map(()=>{}).constructor);
 assertEquals(MyArray, x.filter(()=>{}).constructor);