ES6: Add Object.getOwnPropertySymbols

src/symbol.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 67 matching lines @@
   %SetProperty($Symbol.prototype, "constructor", $Symbol, DONT_ENUM);
 
   InstallGetter($Symbol.prototype, "name", SymbolGetName);
   InstallFunctions($Symbol.prototype, DONT_ENUM, $Array(
     "toString", SymbolToString,
     "valueOf", SymbolValueOf
   ));
 }
 
 SetUpSymbol();
+
+
+function ExtendObject() {
+  %CheckIsBootstrapping();
+
+  InstallFunctions($Object, DONT_ENUM, $Array(
+    "getOwnPropertySymbols", ObjectGetOwnPropertySymbols
+  ));
+}
+
+ExtendObject();