[runtime] [proxy] Make Object.prototype.hasOwnProperty support proxies

src/js/v8natives.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function(global, utils) {
 
 %CheckIsBootstrapping();
 
 // ----------------------------------------------------------------------------
 // Imports
@@ skipping 165 matching lines @@
   return this.toString();
 }
 
 
 // ECMA-262 - 15.2.4.4
 function ObjectValueOf() {
   return TO_OBJECT(this);
 }
 
 
-// ECMA-262 - 15.2.4.5
+// ES6 7.3.11
 function ObjectHasOwnProperty(value) {
   var name = TO_NAME(value);
   var object = TO_OBJECT(this);
-
-  if (%_IsJSProxy(object)) {
-    // TODO(rossberg): adjust once there is a story for symbols vs proxies.
-    if (IS_SYMBOL(value)) return false;
-
-    var handler = %GetHandler(object);
-    return CallTrap1(handler, "hasOwn", ProxyDerivedHasOwnTrap, name);
-  }
   return %HasOwnProperty(object, name);
 }
 
 
 // ECMA-262 - 15.2.4.6
 function ObjectIsPrototypeOf(V) {
   if (!IS_SPEC_OBJECT(V)) return false;
   var O = TO_OBJECT(this);
   return %_HasInPrototypeChain(V, O);
 }
@@ skipping 1554 matching lines @@
 
 %InstallToContext([
   "global_eval_fun", GlobalEval,
   "object_value_of", ObjectValueOf,
   "object_to_string", ObjectToString,
   "object_get_own_property_descriptor", ObjectGetOwnPropertyDescriptor,
   "to_complete_property_descriptor", ToCompletePropertyDescriptor,
 ]);
 
 })