Split IPC logging between content and chrome.

content/common/content_ipc_logging.cc

+// 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.
+
+#include "ipc/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
+
+#if defined(OS_POSIX) && defined(IPC_MESSAGE_LOG_ENABLED)
+#define IPC_MESSAGE_MACROS_LOG_ENABLED
+#include "content/public/common/content_ipc_logging.h"
+#define IPC_LOG_TABLE_ADD_ENTRY(msg_id, logger) \
+    content::RegisterIPCLogger(msg_id, logger)
+#include "content/common/all_messages.h"
+#endif
+
+#if defined(IPC_MESSAGE_LOG_ENABLED)
+
+#include "base/hash_tables.h"
+#include "base/lazy_instance.h"
+
+namespace content {
+
+namespace {
+base::LazyInstance<base::hash_map<uint32, LogFunction> >::Leaky
+    g_log_function_mapping = LAZY_INSTANCE_INITIALIZER;

[jam, 2012/10/29 15:48:48]

nit: spacing

+}  // namespace
+
+void RegisterIPCLogger(uint32 msg_id, LogFunction logger) {
+  if (g_log_function_mapping == NULL)
+    IPC::Logging::set_log_function_map(g_log_function_mapping.Pointer());
+  g_log_function_mapping.Get()[msg_id] = logger;
+}
+
+}  // content
+
+#endif