Reland "Include symbol properties in Object.{create,defineProperties}"

test/mjsunit/es6/symbols.js

 // Copyright 2013 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 349 matching lines @@
   TestKeyGet(obj)
   TestKeyHas(obj)
   TestKeyEnum(obj)
   TestKeyNames(obj)
   TestGetOwnPropertySymbols(obj)
   TestKeyDescriptor(obj)
   TestKeyDelete(obj)
 }
 
 
+function TestDefineProperties() {
+  var properties = {}
+  for (var i in symbols) {
+    Object.defineProperty(
+        properties, symbols[i], {value: {value: i}, enumerable: i % 2 === 0})
+  }
+  var o = Object.defineProperties({}, properties)
+  for (var i in symbols) {
+    assertEquals(i % 2 === 0, symbols[i] in o)
+  }
+}
+TestDefineProperties()
+
+
+function TestCreate() {
+  var properties = {}
+  for (var i in symbols) {
+    Object.defineProperty(
+      properties, symbols[i], {value: {value: i}, enumerable: i % 2 === 0})
+  }
+  var o = Object.create(Object.prototype, properties)
+  for (var i in symbols) {
+    assertEquals(i % 2 === 0, symbols[i] in o)
+  }
+}
+TestCreate()
+
+
 function TestCachedKeyAfterScavenge() {
   gc();
   // Keyed property lookup are cached.  Hereby we assume that the keys are
   // tenured, so that we only have to clear the cache between mark compacts,
   // but not between scavenges.  This must also apply for symbol keys.
   var key = Symbol("key");
   var a = {};
   a[key] = "abc";
 
   for (var i = 0; i < 100000; i++) {
@@ skipping 79 matching lines @@
   Realm.shared = symbol1
   assertSame("x1", Realm.eval(realm, "Symbol.keyFor(Realm.shared)"))
 
   var symbol3 = Realm.eval(realm, "Symbol.for('x3')")
   assertFalse(symbol1 === symbol3)
   assertFalse(symbol2 === symbol3)
   assertSame(symbol3, Symbol.for("x3"))
   assertSame("x3", Symbol.keyFor(symbol3))
 }
 TestRegistry()