Separates ipc code from common (http://crbug.com/16829)

ipc/ipc_switches.h

Index: ipc/ipc_switches.h
diff --git a/ipc/ipc_switches.h b/ipc/ipc_switches.h
new file mode 100644
index 0000000000000000000000000000000000000000..1468432dcc8e46e5ba9d8a75088f1f1bf19375c0
--- /dev/null
+++ b/ipc/ipc_switches.h
@@ -0,0 +1,20 @@
+// Copyright (c) 2006-2009 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.
+
+// Defines all the command-line switches used by the IPC infrastructure.
+
+#ifndef IPC_IPC_SWITCHES_H_
+#define IPC_IPC_SWITCHES_H_
+
+#include "base/base_switches.h"
+
+namespace switches {
+
+extern const wchar_t kIPCUseFIFO[];
+extern const wchar_t kProcessChannelID[];
+extern const wchar_t kDebugChildren[];
+
+}  // namespace switches
+
+#endif  // IPC_IPC_SWITCHES_H_