VM: [Kernel] Fix bootstraping when Kernel isolate is used.

runtime/vm/dart_api_message.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/dart_api_message.h"
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
 #include "vm/symbols.h"
 #include "vm/unicode.h"
 
@@ skipping 1266 matching lines @@
       uint8_t* data = object->value.as_external_typed_data.data;
       void* peer = object->value.as_external_typed_data.peer;
       Dart_WeakPersistentHandleFinalizer callback =
           object->value.as_external_typed_data.callback;
       WriteSmi(length);
       WriteRawPointerValue(reinterpret_cast<intptr_t>(data));
       WriteRawPointerValue(reinterpret_cast<intptr_t>(peer));
       WriteRawPointerValue(reinterpret_cast<intptr_t>(callback));
       break;
     }
+    case Dart_CObject_kSendPort: {
+      WriteInlinedHeader(object);
+      WriteIndexedObject(kSendPortCid);
+      WriteTags(0);
+      Write<int64_t>(object->value.as_send_port.id);
+      Write<uint64_t>(object->value.as_send_port.origin_id);
+      break;
+    }
     case Dart_CObject_kCapability: {
       WriteInlinedHeader(object);
       WriteIndexedObject(kCapabilityCid);
       WriteTags(0);
       Write<uint64_t>(object->value.as_capability.id);
       break;
     }
     default:
       UNREACHABLE();
   }
@@ skipping 16 matching lines @@
     if (!success) {
       UnmarkAllCObjects(object);
       return false;
     }
   }
   UnmarkAllCObjects(object);
   return true;
 }
 
 }  // namespace dart