Add IPC messages for ARC notification

components/arc/common/arc_message_traits.h

Index: components/arc/common/arc_message_traits.h
diff --git a/components/arc/common/arc_message_traits.h b/components/arc/common/arc_message_traits.h
index 9d0938ff917899742adc50297cd8c189c703b9e8..24c9e36c1b6257a685d70c629f87ea549e0e7b30 100644
--- a/components/arc/common/arc_message_traits.h
+++ b/components/arc/common/arc_message_traits.h
@@ -2,9 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "components/arc/common/arc_message_types.h"
 #include "ipc/ipc_message_macros.h"
-#include "ipc/ipc_message_utils.h"
+
+// Using relative paths since this file is shared between chromium and android.
+#include "arc_message_types.h"
+#include "arc_notification_types.h"
 
 IPC_ENUM_TRAITS_MIN_MAX_VALUE(arc::ScaleFactor,
                               arc::ScaleFactor::SCALE_FACTOR_100P,
@@ -15,3 +17,25 @@ IPC_STRUCT_TRAITS_BEGIN(arc::AppInfo)
   IPC_STRUCT_TRAITS_MEMBER(package)
   IPC_STRUCT_TRAITS_MEMBER(activity)
 IPC_STRUCT_TRAITS_END()
+
+// Enum for notification type.
+IPC_ENUM_TRAITS_MAX_VALUE(arc::ArcNotificationType,
+                          arc::ArcNotificationType::LAST)
+
+// Struct for notification data.
+IPC_STRUCT_TRAITS_BEGIN(arc::ArcNotificationData)
+  IPC_STRUCT_TRAITS_MEMBER(key)
+  IPC_STRUCT_TRAITS_MEMBER(type)
+  IPC_STRUCT_TRAITS_MEMBER(message)
+  IPC_STRUCT_TRAITS_MEMBER(title)
+  IPC_STRUCT_TRAITS_MEMBER(icon_mimetype)
+  IPC_STRUCT_TRAITS_MEMBER(icon_data)
+  IPC_STRUCT_TRAITS_MEMBER(priority)
+  IPC_STRUCT_TRAITS_MEMBER(time)
+  IPC_STRUCT_TRAITS_MEMBER(progress_current)
+  IPC_STRUCT_TRAITS_MEMBER(progress_max)
+IPC_STRUCT_TRAITS_END()
+
+// Enum for notification event types.
+IPC_ENUM_TRAITS_MAX_VALUE(arc::ArcNotificationEvent,
+                          arc::ArcNotificationEvent::LAST)