[modules] Assign cell indices at validation time.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 494e9311b235172d178d7afa67ac5be77204f69c..9252c59fae1131c1dfc5e0e0cdacb9340eececdc 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -8052,8 +8052,12 @@ Object* ModuleInfoEntry::local_name() const { return get(kLocalNameIndex); }
 
 Object* ModuleInfoEntry::import_name() const { return get(kImportNameIndex); }
 
-Object* ModuleInfoEntry::module_request() const {
-  return get(kModuleRequestIndex);
+int ModuleInfoEntry::module_request() const {
+  return Smi::cast(get(kModuleRequestIndex))->value();
+}
+
+int ModuleInfoEntry::cell_index() const {
+  return Smi::cast(get(kCellIndexIndex))->value();
 }
 
 int ModuleInfoEntry::beg_pos() const {