[proxies] fix access issue when having proxies on the prototype-chain of global objects.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 9622c8cfc1a7c95c5abe26d15e34a99049e63bfa..31a66b1a5cf6cd753f3e853621d3cc7419405bee 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -1187,14 +1187,10 @@ MaybeHandle<Object> Object::GetPrototype(Isolate* isolate,
                                          Handle<Object> receiver) {
   // We don't expect access checks to be needed on JSProxy objects.
   DCHECK(!receiver->IsAccessCheckNeeded() || receiver->IsJSObject());
-  Handle<Context> context(isolate->context());
-  if (receiver->IsAccessCheckNeeded() &&
-      !isolate->MayAccess(context, Handle<JSObject>::cast(receiver))) {
-    return isolate->factory()->null_value();
-  }
   PrototypeIterator iter(isolate, receiver,
                          PrototypeIterator::START_AT_RECEIVER);
   do {
+    if (!iter.HasAccess()) return isolate->factory()->null_value();
     if (!iter.AdvanceFollowingProxies()) return MaybeHandle<Object>();
   } while (!iter.IsAtEnd(PrototypeIterator::END_AT_NON_HIDDEN));
   return PrototypeIterator::GetCurrent(iter);