Remove on-by-default flag --harmony-object

src/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 1244 matching lines @@
   return %IsExtensible(obj);
 }
 
 
 // ECMA-262, Edition 6, section 19.1.2.10
 function ObjectIs(obj1, obj2) {
   return $sameValue(obj1, obj2);
 }
 
 
+// ECMA-262, Edition 6, section 19.1.2.1
+function ObjectAssign(target, sources) {
+  // TODO(bmeurer): Move this to toplevel.
+  "use strict";
+  var to = TO_OBJECT(target);
+  var argsLen = %_ArgumentsLength();
+  if (argsLen < 2) return to;
+
+  for (var i = 1; i < argsLen; ++i) {
+    var nextSource = %_Arguments(i);
+    if (IS_NULL_OR_UNDEFINED(nextSource)) {
+      continue;
+    }
+
+    var from = TO_OBJECT(nextSource);
+    var keys = OwnPropertyKeys(from);
+    var len = keys.length;
+
+    for (var j = 0; j < len; ++j) {
+      var key = keys[j];
+      if (%IsPropertyEnumerable(from, key)) {
+        var propValue = from[key];
+        to[key] = propValue;
+      }
+    }
+  }
+  return to;
+}
+
+
 // ECMA-262, Edition 6, section B.2.2.1.1
 function ObjectGetProto() {
   return %_GetPrototype(TO_OBJECT(this));
 }
 
 
 // ECMA-262, Edition 6, section B.2.2.1.2
 function ObjectSetProto(proto) {
   CHECK_OBJECT_COERCIBLE(this, "Object.prototype.__proto__");
 
@@ skipping 34 matching lines @@
   "__defineGetter__", ObjectDefineGetter,
   "__lookupGetter__", ObjectLookupGetter,
   "__defineSetter__", ObjectDefineSetter,
   "__lookupSetter__", ObjectLookupSetter
 ]);
 utils.InstallGetterSetter(GlobalObject.prototype, "__proto__", ObjectGetProto,
                     ObjectSetProto);
 
 // Set up non-enumerable functions in the Object object.
 utils.InstallFunctions(GlobalObject, DONT_ENUM, [
+  "assign", ObjectAssign,
   "keys", ObjectKeys,
   "create", ObjectCreate,
   "defineProperty", ObjectDefineProperty,
   "defineProperties", ObjectDefineProperties,
   "freeze", ObjectFreezeJS,
   "getPrototypeOf", ObjectGetPrototypeOf,
   "setPrototypeOf", ObjectSetPrototypeOf,
   "getOwnPropertyDescriptor", ObjectGetOwnPropertyDescriptor,
   "getOwnPropertyNames", ObjectGetOwnPropertyNames,
   // getOwnPropertySymbols is added in symbol.js.
@@ skipping 472 matching lines @@
   to.NewFunctionString = NewFunctionString;
   to.NumberIsNaN = NumberIsNaN;
   to.ObjectDefineProperties = ObjectDefineProperties;
   to.ObjectDefineProperty = ObjectDefineProperty;
   to.ObjectFreeze = ObjectFreezeJS;
   to.ObjectGetOwnPropertyKeys = ObjectGetOwnPropertyKeys;
   to.ObjectHasOwnProperty = ObjectHasOwnProperty;
   to.ObjectIsFrozen = ObjectIsFrozen;
   to.ObjectIsSealed = ObjectIsSealed;
   to.ObjectToString = ObjectToString;
-  to.OwnPropertyKeys = OwnPropertyKeys;
   to.ToNameArray = ToNameArray;
 });
 
 %InstallToContext([
   "global_eval_fun", GlobalEval,
   "object_define_own_property", DefineOwnPropertyFromAPI,
   "object_get_own_property_descriptor", ObjectGetOwnPropertyDescriptor,
   "to_complete_property_descriptor", ToCompletePropertyDescriptor,
 ]);
 
 })