[SAB] Fix {newtarget-prototype-is-not-object,proto-from-ctor-realm} tests

test/mjsunit/harmony/sharedarraybuffer.js

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 565 matching lines @@
 var desc = Object.getOwnPropertyDescriptor(ArrayBuffer.prototype, 'byteLength');
 s = new SharedArrayBuffer(10);
 Object.defineProperty(s, 'byteLength', desc);
 assertThrows(function() {s.byteLength}, TypeError);
 
 desc = Object.getOwnPropertyDescriptor(SharedArrayBuffer.prototype,
   'byteLength');
 var a = new ArrayBuffer(10);
 Object.defineProperty(a, 'byteLength', desc);
 assertThrows(function() {a.byteLength}, TypeError);
+
+// test SharedArrayBuffer species getter
+assertSame(SharedArrayBuffer[Symbol.species], SharedArrayBuffer);
+var desc = Object.getOwnPropertyDescriptor(SharedArrayBuffer, Symbol.species);
+assertEquals("function", typeof desc.get);
+assertEquals("get [Symbol.species]", desc.get.name);
+assertEquals(0, desc.get.length);
+assertEquals("undefined", typeof desc.set);
+assertTrue(desc.configurable);
+assertFalse(desc.enumerable);