Remove files that are no longer used in the Port EDK.

mojo/edk/system/message_in_transit_test_utils.h

-// 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.
-
-#ifndef MOJO_EDK_SYSTEM_MESSAGE_IN_TRANSIT_TEST_UTILS_H_
-#define MOJO_EDK_SYSTEM_MESSAGE_IN_TRANSIT_TEST_UTILS_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "mojo/edk/system/message_in_transit.h"
-
-namespace mojo {
-namespace edk {
-namespace test {
-
-// Makes a test message. It will be of type
-// |MessageInTransit::Type::ENDPOINT_CLIENT| and subtype
-// |MessageInTransit::Subtype::ENDPOINT_CLIENT_DATA|, and contain data
-// associated with |id| (so that test messages with different |id|s are
-// distinguishable).
-scoped_ptr<MessageInTransit> MakeTestMessage(unsigned id);
-
-// Verifies a test message: ASSERTs that |message| is non-null, and EXPECTs that
-// it looks like a message created using |MakeTestMessage(id)| (see above).
-void VerifyTestMessage(const MessageInTransit* message, unsigned id);
-
-// Checks if |message| looks like a test message created using
-// |MakeTestMessage()|, in which case it returns true and sets |*id|. (Otherwise
-// it returns false and leaves |*id| alone.)
-bool IsTestMessage(MessageInTransit* message, unsigned* id);
-
-}  // namespace test
-}  // namespace edk
-}  // namespace mojo
-
-#endif  // MOJO_EDK_SYSTEM_MESSAGE_IN_TRANSIT_TEST_UTILS_H_