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

ipc/ipc_multiprocess_test.cc

-// 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.
-
-#include "build/build_config.h"
-
-#include "ipc/ipc_channel.h"
-#include "ipc/ipc_multiprocess_test.h"
-
-#if defined(OS_POSIX)
-#include "base/posix/global_descriptors.h"
-#include "ipc/ipc_descriptors.h"
-#endif
-
-namespace internal {
-
-void MultiProcessTestIPCSetUp() {
-#if defined(OS_ANDROID)
-  // On Android we can't 'exec'. So for simple multi-process tests
-  // we need to reset some global data after forking to get the same
-  // behavior in simple multi-process tests.
-  IPC::Channel::NotifyProcessForkedForTesting();
-#endif
-#if defined(OS_POSIX)
-  base::GlobalDescriptors::GetInstance()->Set(kPrimaryIPCChannel,
-      kPrimaryIPCChannel + base::GlobalDescriptors::kBaseDescriptor);
-#endif
-}
-
-}  // namespace internal