Generate Mojom Types for Dart

mojo/public/tools/bindings/generators/dart_templates/enum_definition.tmpl

Index: mojo/public/tools/bindings/generators/dart_templates/enum_definition.tmpl
diff --git a/mojo/public/tools/bindings/generators/dart_templates/enum_definition.tmpl b/mojo/public/tools/bindings/generators/dart_templates/enum_definition.tmpl
index 0b5a88d5e494ac15a0994ce8dd705c15c909e397..176fc7c6cb663acb049d97b1af0ff66bdcc50ba0 100644
--- a/mojo/public/tools/bindings/generators/dart_templates/enum_definition.tmpl
+++ b/mojo/public/tools/bindings/generators/dart_templates/enum_definition.tmpl
@@ -1,4 +1,6 @@
-{%- macro enum_def(enum) -%}
+{% import "mojom_type_macros.tmpl" as mojom_type_macros %}
+
+{%- macro enum_def(enum, typepkg, package) -%}
 class {{enum|name}} extends bindings.MojoEnum {
 {%- for field in enum.fields %}
   static const {{field.name}} = const {{enum|name}}._({{field.resolved_value}});
@@ -46,9 +48,14 @@ class {{enum|name}} extends bindings.MojoEnum {
       case {{field.name}}:
         return '{{enum|name}}.{{field.name}}';
 {%- endfor %}
+      default:
+        return null;
     }
   }
 
   int toJson() => value;
 }
+
+{{ mojom_type_macros.writeMojomTypeDef(enum, typepkg, package) }}
+
 {%- endmacro %}