Fix for issue 21398 (only send "literal like" objects across isolates spawned using spawnURI

runtime/vm/dart_api_impl_test.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 "bin/builtin.h"
 #include "include/dart_api.h"
 #include "include/dart_debugger_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 #include "platform/assert.h"
@@ skipping 6997 matching lines @@
   EXPECT_NOTNULL(message);
   EXPECT_EQ(Dart_CObject_kArray, message->type);
   EXPECT_EQ(Dart_CObject_kSendPort, message->value.as_array.values[0]->type);
 
   // Post integer value.
   Dart_CObject* response =
       reinterpret_cast<Dart_CObject*>(Dart_ScopeAllocate(sizeof(Dart_CObject)));
   response->type = Dart_CObject_kInt32;
   response->value.as_int32 = 123;
   Dart_PostCObject(
-      message->value.as_array.values[0]->value.as_send_port, response);
+      message->value.as_array.values[0]->value.as_send_port.id, response);
 }
 
 
 void NewNativePort_send321(Dart_Port dest_port_id,
                            Dart_CObject* message) {
   // Gets a null message.
   EXPECT_NOTNULL(message);
   EXPECT_EQ(Dart_CObject_kSendPort, message->value.as_array.values[0]->type);
 
   // Post integer value.
   Dart_CObject* response =
       reinterpret_cast<Dart_CObject*>(Dart_ScopeAllocate(sizeof(Dart_CObject)));
   response->type = Dart_CObject_kInt32;
   response->value.as_int32 = 321;
   Dart_PostCObject(
-      message->value.as_array.values[0]->value.as_send_port, response);
+      message->value.as_array.values[0]->value.as_send_port.id, response);
 }
 
 
 UNIT_TEST_CASE(NewNativePort) {
   // Create a port with a bogus handler.
   Dart_Port error_port = Dart_NewNativePort("Foo", NULL, true);
   EXPECT_EQ(ILLEGAL_PORT, error_port);
 
   // Create the port w/o a current isolate, just to make sure that works.
   Dart_Port port_id1 =
@@ skipping 1672 matching lines @@
                                    NewString("main"),
                                    1,
                                    dart_args);
   int64_t value = 0;
   result = Dart_IntegerToInt64(result, &value);
   EXPECT_VALID(result);
   EXPECT_EQ(6, value);
 }
 
 }  // namespace dart