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

src/factory.h

Index: src/factory.h
diff --git a/src/factory.h b/src/factory.h
index 7f0d2ea4e4028aff660aaca058ccdb88ba132837..787479c52dbac881789a2f4f3d1cae297cc789bf 100644
--- a/src/factory.h
+++ b/src/factory.h
@@ -477,8 +477,7 @@ class Factory final {
 
   // Allocates a Harmony proxy.
   Handle<JSProxy> NewJSProxy(Handle<JSReceiver> target,
-                             Handle<JSReceiver> handler,
-                             Handle<Object> prototype);
+                             Handle<JSReceiver> handler);
 
   // Allocates a Harmony function proxy.
   Handle<JSProxy> NewJSFunctionProxy(Handle<JSReceiver> target,