Support receiving GrowableObjectArray on native ports

runtime/vm/dart_api_message.h

Index: runtime/vm/dart_api_message.h
diff --git a/runtime/vm/dart_api_message.h b/runtime/vm/dart_api_message.h
index 2314315371adb6ae37274332725d8a6ee05a9ec7..628791e6e39e733a2433affb8685ab8197917e64 100644
--- a/runtime/vm/dart_api_message.h
+++ b/runtime/vm/dart_api_message.h
@@ -74,6 +74,8 @@ class ApiMessageReader : public BaseReader {
   Dart_CObject* AllocateDartCObjectUint8Array(intptr_t length);
   // Allocates a C array of Dart_CObject objects.
   Dart_CObject* AllocateDartCObjectArray(intptr_t length);
+  // Allocates a Dart_CObject for GrowableObjectArray.
+  Dart_CObject* AllocateDartCObjectGrowableObjectArray(intptr_t length);
   // Allocates a backwards reference node.
   BackRefNode* AllocateBackRefNode(Dart_CObject* ref, DeserializeState state);