Initial import.

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diff --git a/chromium/ipc/ipc_multiprocess_test.h b/chromium/ipc/ipc_multiprocess_test.h
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+++ b/chromium/ipc/ipc_multiprocess_test.h
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+// 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_