Implement IPC::ParamTraits<mojo::MessagePipeHandle>

ipc/mojo/ipc_mojo_param_traits.h

Index: ipc/mojo/ipc_mojo_param_traits.h
diff --git a/ipc/mojo/ipc_mojo_param_traits.h b/ipc/mojo/ipc_mojo_param_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..d12e44fccd8399fa64f5489edee5a71441eeed65
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+++ b/ipc/mojo/ipc_mojo_param_traits.h
@@ -0,0 +1,30 @@
+// 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 IPC_MOJO_IPC_MOJO_PARAM_TRAITS_H_
+#define IPC_MOJO_IPC_MOJO_PARAM_TRAITS_H_
+
+#include <string>
+
+#include "ipc/ipc_export.h"
+#include "ipc/ipc_param_traits.h"
+#include "third_party/mojo/src/mojo/public/cpp/system/message_pipe.h"
+
+class PickleIterator;
+
+namespace IPC {
+
+class Message;
+
+template <>
+struct IPC_MOJO_EXPORT ParamTraits<mojo::MessagePipeHandle> {
+  typedef mojo::MessagePipeHandle param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, PickleIterator* iter, param_type* r);
+  static void Log(const param_type& p, std::string* l);
+};
+
+}  // namespace IPC
+
+#endif  // IPC_MOJO_IPC_MOJO_PARAM_TRAITS_H_