Generate param traits even when shared by mutliple message files.

content/public/common/common_param_traits_defs.h

Index: content/public/common/common_param_traits_defs.h
===================================================================
--- content/public/common/common_param_traits_defs.h	(revision 0)
+++ content/public/common/common_param_traits_defs.h	(revision 0)
@@ -0,0 +1,12 @@
+// 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.
+
+// Multiply-included shared traits file, hence no include guard but provide
+// symbol for explicit checks by headers including this file.
+#define CONTENT_PUBLIC_COMMON_COMMON_PARAM_TRAITS_DEFS_H_
+
+#include "content/public/common/console_message_level.h"
+#include "ipc/ipc_message_macros.h"
+
+IPC_ENUM_TRAITS(content::ConsoleMessageLevel)
Property changes on: content/public/common/common_param_traits_defs.h
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Added: svn:eol-style
   + LF