[runtime] support new Proxy() instead of Proxy.create and install getPrototypeOf trap

src/js/proxy.js

Index: src/js/proxy.js
diff --git a/src/js/proxy.js b/src/js/proxy.js
index fc38680a13a8daae96d7df99e3acf839ecb35232..b84e53b20b6771b791f123eeac36caea5e21f8b2 100644
--- a/src/js/proxy.js
+++ b/src/js/proxy.js
@@ -10,7 +10,7 @@
 
 // ----------------------------------------------------------------------------
 // Imports
-
+var GlobalProxy = global.Proxy;
 var GlobalFunction = global.Function;
 var GlobalObject = global.Object;
 var MakeTypeError;
@@ -24,12 +24,16 @@ utils.Import(function(from) {
 //----------------------------------------------------------------------------
 
 function ProxyCreate(handler, proto) {
-  if (!IS_SPEC_OBJECT(handler))
+  if (!%_IsConstructCall()) {
+    throw MakeTypeError(kConstructorNotFunction, "Proxy");
+  } else if (!IS_SPEC_OBJECT(handler)) {
     throw MakeTypeError(kProxyHandlerNonObject, "create")
-  if (IS_UNDEFINED(proto))
+  }
+  if (IS_UNDEFINED(proto)) {
     proto = null
-  else if (!(IS_SPEC_OBJECT(proto) || IS_NULL(proto)))
+  } else if (!(IS_SPEC_OBJECT(proto) || IS_NULL(proto))) {
     throw MakeTypeError(kProxyProtoNonObject)
+  }
   return %CreateJSProxy(handler, proto)
 }
 
@@ -182,16 +186,16 @@ function ProxyEnumerate(proxy) {
 }
 
 //-------------------------------------------------------------------
+%SetCode(GlobalProxy, ProxyCreate);
+%FunctionSetPrototype(GlobalProxy, new GlobalObject());
 
-var Proxy = new GlobalObject();
-%AddNamedProperty(global, "Proxy", Proxy, DONT_ENUM);
-
-//Set up non-enumerable properties of the Proxy object.
-utils.InstallFunctions(Proxy, DONT_ENUM, [
+// //Set up non-enumerable properties of the Proxy object.
+utils.InstallFunctions(GlobalProxy, DONT_ENUM, [
   "create", ProxyCreate,
   "createFunction", ProxyCreateFunction
-])
+]);
 
+%AddNamedProperty(GlobalProxy.prototype, "constructor", GlobalProxy, DONT_ENUM);
 // -------------------------------------------------------------------
 // Exports