Array and map members for unions.

mojo/public/tools/bindings/generators/cpp_templates/union_serialization_definition.tmpl

 size_t GetSerializedSize_(const {{union.name}}Ptr& input, bool inlined) {
   size_t size = 0U;
   if (!inlined) {
     size += sizeof(internal::{{union.name}}_Data);
   }
 
   if (!input)
     return size;
 
   mojo::internal::UnionAccessor<{{union.name}}> input_acc(input.get());
@@ skipping 25 matching lines @@
     result->tag = input->which();
     switch (input->which()) {
 {%  for field in union.fields %}
       case {{union.name}}::Tag::{{field.name|upper}}: {
 {%    if field.kind|is_object_kind %}
         {{field.kind|cpp_field_type}}* {{field.name}}_ptr = reinterpret_cast<{{field.kind|cpp_field_type}}*>(&result->data.f_{{field.name}});
 {%      if field.kind|is_string_kind %}
         Serialize_(*(input_acc.data()->{{field.name}}), buf, &{{field.name}}_ptr->ptr);
 {%      elif field.kind|is_struct_kind %}
         Serialize_(mojo::internal::Forward(*(input_acc.data()->{{field.name}})), buf, &{{field.name}}_ptr->ptr);
+{%      elif field.kind|is_array_kind %}
+        const mojo::internal::ArrayValidateParams {{field.name}}_validate_params =
+            {{field.kind|get_array_validate_params|indent(16)}};
+        SerializeArray_(
+            mojo::internal::Forward(*(input_acc.data()->{{field.name}})),
+            buf, &{{field.name}}_ptr->ptr, &{{field.name}}_validate_params);
+{%      elif field.kind|is_map_kind %}
+        const mojo::internal::ArrayValidateParams {{field.name}}_validate_params =
+            {{field.kind.value_kind|get_map_validate_params|indent(16)}};
+        SerializeMap_(
+            mojo::internal::Forward(*(input_acc.data()->{{field.name}})),
+            buf, &{{field.name}}_ptr->ptr, &{{field.name}}_validate_params);
 {%-     endif %}
 {%    else %}
         result->data.f_{{field.name}} = input_acc.data()->{{field.name}};
 {%-   endif %}
         break;
       }
 {%- endfor %}
     }
   } else if (inlined) {
     result->set_null();
@@ skipping 20 matching lines @@
 {%-   endif %}
         break;
       }
 {%- endfor %}
     }
     *output = result.Pass();
   } else {
     output->reset();
   }
 }