Delete IPC::ChannelPosix, IPC::ChannelWin and IPC::AttachmentBroker.

ipc/ipc_multiprocess_test.h

-// Copyright (c) 2012 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 IPC_IPC_MULTIPROCESS_TEST_H_
-#define IPC_IPC_MULTIPROCESS_TEST_H_
-
-#include "testing/multiprocess_func_list.h"
-
-// Use this macro when your sub-process is using an IPCChannel to communicate
-// with the test process. See the comment below for why this is needed.
-#define MULTIPROCESS_IPC_TEST_MAIN(test_main) \
-    MULTIPROCESS_TEST_MAIN_WITH_SETUP(test_main, \
-                                      internal::MultiProcessTestIPCSetUp)
-
-namespace internal {
-
-// Setup function used by MULTIPROCESS_IPC_TEST_MAIN. Registers the IPC channel
-// as a global descriptor in the child process. This is needed on POSIX as on
-// creation the IPCChannel looks for a specific global descriptor to establish
-// the connection to the parent process.
-void MultiProcessTestIPCSetUp();
-
-}  // namespace internal
-
-#endif  // IPC_IPC_MULTIPROCESS_TEST_H_