Allow the global object to be frozen through the global template

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index e484c80203fe6e9b4817c3215cc18ee95a7887e3..17c499a558dda82555c709e99f6b4e914e258c01 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -948,6 +948,8 @@ Handle<JSGlobalObject> Genesis::CreateNewGlobals(
     js_global_object_function = ApiNatives::CreateApiFunction(
         isolate(), js_global_object_constructor, factory()->the_hole_value(),
         ApiNatives::GlobalObjectType);
+    if (js_global_object_template->immutable_proto())

[adamk, 2016/11/04 17:39:19]

I think you can do this check inside ApiNatives::CreateApiFunction, which at
least keeps the immutable proto logic mostly in api-natives.cc.

[Dan Ehrenberg, 2016/11/04 17:56:36]

Done

+      js_global_object_function->initial_map()->set_immutable_proto(true);
   }
 
   js_global_object_function->initial_map()->set_is_prototype_map(true);