Prune some internal objects' prototypes.

src/v8natives.js

 // Copyright 2011 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 444 matching lines @@
   this.hasEnumerable_ = false;
   this.configurable_ = false;
   this.hasConfigurable_ = false;
   this.get_ = void 0;
   this.hasGetter_ = false;
   this.set_ = void 0;
   this.hasSetter_ = false;
 }
 
 PropertyDescriptor.prototype.__proto__ = null;
+
 PropertyDescriptor.prototype.toString = function() {
   return "[object PropertyDescriptor]";
 };
 
 PropertyDescriptor.prototype.setValue = function(value) {
   this.value_ = value;
   this.hasValue_ = true;
 }
 
 
@@ skipping 1062 matching lines @@
 // ----------------------------------------------------------------------------
 
 function SetupFunction() {
   InstallFunctions($Function.prototype, DONT_ENUM, $Array(
     "bind", FunctionBind,
     "toString", FunctionToString
   ));
 }
 
 SetupFunction();