Separate Scope into DeclarationScope and Scope

src/ast/modules.cc

Index: src/ast/modules.cc
diff --git a/src/ast/modules.cc b/src/ast/modules.cc
index 286a117b3f506791c5ce1c02cd1100e1532dfdbb..3c04847a5fdaa0d6f21129f009cc8e248d150e9f 100644
--- a/src/ast/modules.cc
+++ b/src/ast/modules.cc
@@ -79,10 +79,9 @@ void ModuleDescriptor::AddStarExport(
   exports_.Add(entry, zone);
 }
 
-
-bool ModuleDescriptor::Validate(
-    Scope* module_scope, PendingCompilationErrorHandler* error_handler,
-    Zone* zone) const {
+bool ModuleDescriptor::Validate(DeclarationScope* module_scope,
+                                PendingCompilationErrorHandler* error_handler,
+                                Zone* zone) const {
   DCHECK(module_scope->is_module_scope());
   DCHECK_EQ(this, module_scope->module());
   DCHECK_NOT_NULL(error_handler);