[Password Generation] Add FormFieldData.properties_mask to mojo

components/autofill/content/public/cpp/autofill_types_struct_traits.h

Index: components/autofill/content/public/cpp/autofill_types_struct_traits.h
diff --git a/components/autofill/content/public/cpp/autofill_types_struct_traits.h b/components/autofill/content/public/cpp/autofill_types_struct_traits.h
index e3845a43c8d2d48b18944819b636cb77017072cb..9878402ea0eb4639b9b54ee0c4ea55a7ec6c0b62 100644
--- a/components/autofill/content/public/cpp/autofill_types_struct_traits.h
+++ b/components/autofill/content/public/cpp/autofill_types_struct_traits.h
@@ -124,6 +124,10 @@ struct StructTraits<autofill::mojom::FormFieldData, autofill::FormFieldData> {
     return r.css_classes;
   }
 
+  static uint32_t properties_mask(const autofill::FormFieldData& r) {
+    return r.properties_mask;
+  }
+
   static uint64_t max_length(const autofill::FormFieldData& r) {
     return r.max_length;
   }