Revert revision 7143, this causes a number of webkit tests to fail....

src/v8natives.js

Index: src/v8natives.js
===================================================================
--- src/v8natives.js	(revision 7143)
+++ src/v8natives.js	(working copy)
@@ -251,11 +251,7 @@
   if (!IS_FUNCTION(fun)) {
     throw new $TypeError('Object.prototype.__defineGetter__: Expecting function');
   }
-  var desc = new PropertyDescriptor();
-  desc.setGet(fun);
-  desc.setEnumerable(true);
-  desc.setConfigurable(true);
-  DefineOwnProperty(ToObject(this), ToString(name), desc, true);
+  return %DefineAccessor(ToObject(this), ToString(name), GETTER, fun);
 }
 
 
@@ -275,11 +271,7 @@
     throw new $TypeError(
         'Object.prototype.__defineSetter__: Expecting function');
   }
-  var desc = new PropertyDescriptor();
-  desc.setSet(fun);
-  desc.setEnumerable(true);
-  desc.setConfigurable(true);
-  DefineOwnProperty(ToObject(this), ToString(name), desc, true);
+  return %DefineAccessor(ToObject(this), ToString(name), SETTER, fun);
 }
 
 
@@ -402,10 +394,6 @@
   this.hasSetter_ = false;
 }
 
-PropertyDescriptor.prototype.__proto__ = null;
-PropertyDescriptor.prototype.toString = function() {
-  return "[object PropertyDescriptor]";
-};
 
 PropertyDescriptor.prototype.setValue = function(value) {
   this.value_ = value;
@@ -507,7 +495,7 @@
 // property descriptor. For a description of the array layout please
 // see the runtime.cc file.
 function ConvertDescriptorArrayToDescriptor(desc_array) {
-  if (desc_array === false) {
+  if (desc_array == false) {
     throw 'Internal error: invalid desc_array';
   }
 
@@ -566,7 +554,7 @@
 function DefineOwnProperty(obj, p, desc, should_throw) {
   var current_or_access = %GetOwnProperty(ToObject(obj), ToString(p));
   // A false value here means that access checks failed.
-  if (current_or_access === false) return void 0;
+  if (current_or_access == false) return void 0;
 
   var current = ConvertDescriptorArrayToDescriptor(current_or_access);
   var extensible = %IsExtensible(ToObject(obj));