Mojo C++ bindings: custom type mapping for array - part 2

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

Index: mojo/public/cpp/bindings/lib/serialization_util.cc
diff --git a/mojo/public/cpp/bindings/lib/serialization_util.cc b/mojo/public/cpp/bindings/lib/serialization_util.cc
index 91a0dd0d37870ecc274b7dadaa0ec59ed79942f4..4624ff8baa1dc75fbdca51a897c4c64f44ba1662 100644
--- a/mojo/public/cpp/bindings/lib/serialization_util.cc
+++ b/mojo/public/cpp/bindings/lib/serialization_util.cc
@@ -97,7 +97,9 @@ SerializationContext::SerializationContext(
     scoped_refptr<MultiplexRouter> in_router)
     : router(std::move(in_router)) {}
 
-SerializationContext::~SerializationContext() {}
+SerializationContext::~SerializationContext() {
+  DCHECK(!custom_contexts || custom_contexts->empty());
+}
 
 }  // namespace internal
 }  // namespace mojo