Decouple Blimp transport output from BlimpConnections using MessagePort.

blimp/net/engine_authentication_handler_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
+#include <memory>
 #include <string>
+#include <utility>
 
 #include "base/memory/ref_counted.h"
 #include "base/test/test_mock_time_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "blimp/common/create_blimp_message.h"
 #include "blimp/common/proto/blimp_message.pb.h"
 #include "blimp/common/protocol_version.h"
 #include "blimp/net/blimp_connection.h"
 #include "blimp/net/blimp_transport.h"
 #include "blimp/net/common.h"
@@ skipping 139 matching lines @@
 
   std::unique_ptr<BlimpMessage> blimp_message =
       CreateStartConnectionMessage(client_token, kProtocolVersion);
   net::TestCompletionCallback process_message_cb;
   incoming_message_processor_->ProcessMessage(std::move(blimp_message),
                                               process_message_cb.callback());
   EXPECT_EQ(net::OK, process_message_cb.WaitForResult());
 }
 
 }  // namespace blimp