Reland "[strong] Object literals create strong objects"

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index a0e7b7af629a6ea6df1187fa31a75d73937a642a..6969edea108eac8c4fbaa4f9c08ebfc4f35ea0d4 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1016,6 +1016,11 @@ void Genesis::InitializeGlobal(Handle<GlobalObject> global_object,
     ArrayConstructorStub array_constructor_stub(isolate);
     Handle<Code> code = array_constructor_stub.GetCode();
     array_function->shared()->set_construct_stub(*code);
+
+    Handle<Map> initial_strong_map =
+        Map::Copy(initial_map, "SetInstancePrototype");
+    initial_strong_map->set_is_strong(true);
+    CacheInitialJSArrayMaps(native_context(), initial_strong_map);
   }
 
   {  // --- N u m b e r ---