Add IPC messages for ARC notification

components/arc/common/arc_message_param_traits.h

Index: components/arc/common/arc_message_param_traits.h
diff --git a/components/arc/common/arc_message_param_traits.h b/components/arc/common/arc_message_param_traits.h
new file mode 100644
index 0000000000000000000000000000000000000000..49439b861e3d29486e983d85da82df6b130a1e55
--- /dev/null
+++ b/components/arc/common/arc_message_param_traits.h
@@ -0,0 +1,26 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.

[hidehiko, 2015/11/26 03:39:41]

IPC_STRUCT_TRAITS_{BEGIN,END,MEMBER} macros are your friends.
https://code.google.com/p/chromium/codesearch#chromium/src/ipc/param_traits_m...

Also, you may be interested in IPC_ENUM_TRAITS* family.

You can use
https://code.google.com/p/chromium/codesearch#chromium/src/components/nacl/co...
as a reference, I think.

[yoshiki, 2015/11/26 10:36:21]

Thank you for letting me know! I updated the code with macros.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_ARC_COMMON_ARC_HOST_MESSAGE_PARAM_TRAITS_H_
+#define COMPONENTS_ARC_COMMON_ARC_HOST_MESSAGE_PARAM_TRAITS_H_
+
+#include "ipc/ipc_export.h"
+#include "ipc/ipc_message_utils.h"
+
+// Using relative paths since this file is shared between chromium and android.
+#include "arc_notification_types.h"
+
+namespace IPC {
+
+template <>
+struct IPC_EXPORT ParamTraits<arc::ArcNotificationData> {
+  typedef arc::ArcNotificationData param_type;
+  static void Write(Message* m, const param_type& p);
+  static bool Read(const Message* m, base::PickleIterator* iter, param_type* p);
+  static void Log(const param_type& p, std::string* l);
+};
+
+}  // namespace IPC
+
+#endif  // COMPONENTS_ARC_COMMON_ARC_HOST_MESSAGE_PARAM_TRAITS_H_