Decode the Dart message into a Dart_CMessage structure before calling the native port callback

runtime/vm/snapshot_test.cc

Index: runtime/vm/snapshot_test.cc
diff --git a/runtime/vm/snapshot_test.cc b/runtime/vm/snapshot_test.cc
index 9903f10c59cca6982298123eed1a9a962c85c701..4c6f156ab0c3fc4f3e0472afc4b0ac8f506f4f8d 100644
--- a/runtime/vm/snapshot_test.cc
+++ b/runtime/vm/snapshot_test.cc
@@ -7,6 +7,7 @@
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
+#include "vm/dart_api_message.h"
 #include "vm/dart_api_state.h"
 #include "vm/snapshot.h"
 #include "vm/unit_test.h"
@@ -55,7 +56,7 @@ static uint8_t* zone_allocator(
 static Dart_CObject* DecodeMessage(uint8_t* message,
                                    intptr_t length,
                                    ReAlloc allocator) {
-  CMessageReader message_reader(message, length, allocator);
+  ApiMessageReader message_reader(message, length, allocator);
   return message_reader.ReadMessage();
 }