Mojo: more idiomatic C++ bindings

mojo/public/tools/bindings/mojom.gni

Index: mojo/public/tools/bindings/mojom.gni
diff --git a/mojo/public/tools/bindings/mojom.gni b/mojo/public/tools/bindings/mojom.gni
index d0c6281b477a2200cdcf032aa5b22a18c903a204..308a878a1c72e4fc88cdc7626def07512f368c91 100644
--- a/mojo/public/tools/bindings/mojom.gni
+++ b/mojo/public/tools/bindings/mojom.gni
@@ -12,7 +12,6 @@ template("mojom") {
   generator_sources = [
     generator_script,
     "$generator_root/generators/cpp_templates/enum_declaration.tmpl",
-    "$generator_root/generators/cpp_templates/enum_traits.tmpl",
     "$generator_root/generators/cpp_templates/interface_declaration.tmpl",
     "$generator_root/generators/cpp_templates/interface_definition.tmpl",
     "$generator_root/generators/cpp_templates/interface_macros.tmpl",
@@ -24,12 +23,13 @@ template("mojom") {
     "$generator_root/generators/cpp_templates/module.h.tmpl",
     "$generator_root/generators/cpp_templates/module-internal.h.tmpl",
     "$generator_root/generators/cpp_templates/params_definition.tmpl",
-    "$generator_root/generators/cpp_templates/struct_builder_definition.tmpl",
     "$generator_root/generators/cpp_templates/struct_declaration.tmpl",
     "$generator_root/generators/cpp_templates/struct_definition.tmpl",
-    "$generator_root/generators/cpp_templates/struct_destructor.tmpl",
+    "$generator_root/generators/cpp_templates/struct_serialization_declaration.tmpl",
+    "$generator_root/generators/cpp_templates/struct_serialization_definition.tmpl",
     "$generator_root/generators/cpp_templates/struct_macros.tmpl",
     "$generator_root/generators/cpp_templates/wrapper_class_declaration.tmpl",
+    "$generator_root/generators/cpp_templates/wrapper_class_definition.tmpl",
     "$generator_root/generators/js_templates/enum_definition.tmpl",
     "$generator_root/generators/js_templates/interface_definition.tmpl",
     "$generator_root/generators/js_templates/module.js.tmpl",