Split IPC logging between content and chrome.

content/public/common/content_ipc_logging.h

+// 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.
+
+#ifndef CONTENT_PUBLIC_COMMON_CONTENT_IPC_LOGGING_H_
+#define CONTENT_PUBLIC_COMMON_CONTENT_IPC_LOGGING_H_
+
+#include "ipc/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
+
+#include "content/common/content_export.h"
+#include "ipc/ipc_logging.h"
+
+namespace content {
+
+#if defined(IPC_MESSAGE_LOG_ENABLED)
+
+// Register a logger for the given IPC message. Use
+//
+//   #define IPC_MESSAGE_MACROS_LOG_ENABLED
+//   #define IPC_LOG_TABLE_ADD_ENTRY(msg_id, logger)
+//       content::RegisterIPCLogger(msg_id, logger)
+//
+// to register IPC messages with the logging system.
+CONTENT_EXPORT void RegisterIPCLogger(uint32 msg_id, LogFunction logger);
+
+#endif
+
+}  // namespace content
+
+#endif  // CONTENT_PUBLIC_COMMON_CONTENT_IPC_LOGGING_H_