[proxies] Implement the Proxy constructor in C++ fully.

src/js/proxy.js

 // Copyright 2015 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) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // ----------------------------------------------------------------------------
 // Imports
 //
 var GlobalProxy = global.Proxy;
 var GlobalFunction = global.Function;
 var GlobalObject = global.Object;
 var MakeTypeError;
-var ToNameArray;
 
 utils.Import(function(from) {
   MakeTypeError = from.MakeTypeError;
-  ToNameArray = from.ToNameArray;
 });
 
 //----------------------------------------------------------------------------
 
-function ProxyCreate(target, handler) {
-  if (IS_UNDEFINED(new.target)) {
-    throw MakeTypeError(kConstructorNotFunction, "Proxy");
-  }
-  return %CreateJSProxy(target, handler);
-}
-
 function ProxyCreateFunction(handler, callTrap, constructTrap) {
   if (!IS_SPEC_OBJECT(handler))
     throw MakeTypeError(kProxyHandlerNonObject, "createFunction")
   if (!IS_CALLABLE(callTrap))
     throw MakeTypeError(kProxyTrapFunctionExpected, "call")
   if (IS_UNDEFINED(constructTrap)) {
     constructTrap = DerivedConstructTrap(callTrap)
   } else if (IS_CALLABLE(constructTrap)) {
     // Make sure the trap receives 'undefined' as this.
     var construct = constructTrap
@@ skipping 99 matching lines @@
     if (!IS_STRING(key)) {
       throw MakeTypeError(kProxyHandlerReturned, handler, "non-String",
                           "enumerate-iterator");
     }
     result.push(key);
   }
   return result;
 }
 
 //-------------------------------------------------------------------
-%SetCode(GlobalProxy, ProxyCreate);
 
 //Set up non-enumerable properties of the Proxy object.
 utils.InstallFunctions(GlobalProxy, DONT_ENUM, [
   "createFunction", ProxyCreateFunction
 ]);
 
 // -------------------------------------------------------------------
 // Exports
 
 utils.Export(function(to) {
   to.ProxyDelegateCallAndConstruct = DelegateCallAndConstruct;
   to.ProxyDerivedHasOwnTrap = DerivedHasOwnTrap;
 });
 
 %InstallToContext([
   "proxy_enumerate", ProxyEnumerate,
 ]);
 
 })