Adds a special case for sending an int over a port with the native API.

runtime/vm/native_message_handler.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/native_message_handler.h"
 
 #include "vm/dart_api_message.h"
 #include "vm/isolate.h"
 #include "vm/message.h"
 #include "vm/snapshot.h"
@@ skipping 24 matching lines @@
 MessageHandler::MessageStatus NativeMessageHandler::HandleMessage(
     Message* message) {
   if (message->IsOOB()) {
     // We currently do not use OOB messages for native ports.
     UNREACHABLE();
   }
   // We create a native scope for handling the message.
   // All allocation of objects for decoding the message is done in the
   // zone associated with this scope.
   ApiNativeScope scope;
-  ApiMessageReader reader(message->data(), message->len());
-  Dart_CObject* object = reader.ReadMessage();
-  (*func())(message->dest_port(), object);
+
+  if (message->IsRaw()) {
+    ASSERT(ApiObjectConverter::CanConvert(message->raw_obj()));
+    Dart_CObject object;
+    bool success = ApiObjectConverter::Convert(message->raw_obj(), &object);

[turnidge, 2015/12/11 22:30:48]

As discussed offline, let's see if we can move this conversion stuff inside
reader.ReadMessage().

[zra, 2015/12/11 23:44:32]

I've added a TODO here.

+    ASSERT(success);
+    (*func())(message->dest_port(), &object);
+  } else {
+    Dart_CObject* object;
+    ApiMessageReader reader(message->data(), message->len());
+    object = reader.ReadMessage();
+    (*func())(message->dest_port(), object);
+  }
+
   delete message;
   return kOK;
 }
 
 }  // namespace dart