Mojo C++ bindings: introduce an optional array to store transferred interface IDs in messages.

mojo/public/cpp/bindings/lib/validation_errors.cc

Index: mojo/public/cpp/bindings/lib/validation_errors.cc
diff --git a/mojo/public/cpp/bindings/lib/validation_errors.cc b/mojo/public/cpp/bindings/lib/validation_errors.cc
index 12e6ff73c821f1794a7a72ce22aa08acc1d54edb..904f5e4c72a0b69cf59b02bde4c6b721877300c2 100644
--- a/mojo/public/cpp/bindings/lib/validation_errors.cc
+++ b/mojo/public/cpp/bindings/lib/validation_errors.cc
@@ -98,10 +98,7 @@ void ReportValidationErrorForMessage(
     mojo::Message* message,
     ValidationError error,
     const char* description) {
-  ValidationContext validation_context(
-      message->data(), message->data_num_bytes(),
-      message->handles()->size(), message,
-      description);
+  ValidationContext validation_context(nullptr, 0, 0, 0, message, description);
   ReportValidationError(&validation_context, error);
 }