POSIX: basic IPC logging

chrome/common/ipc_message.h

 // Copyright (c) 2006-2008 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 CHROME_COMMON_IPC_MESSAGE_H__
 #define CHROME_COMMON_IPC_MESSAGE_H__
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/pickle.h"
 #include "testing/gtest/include/gtest/gtest_prod.h"
 
-#if defined(OS_WIN)
-// TODO(port): IPC message logging hasn't been ported to other platforms yet.
 #ifndef NDEBUG
 #define IPC_MESSAGE_LOG_ENABLED
 #endif
-#elif defined(OS_POSIX)
+
+#if defined(OS_POSIX)
 #include "chrome/common/descriptor_set_posix.h"
 #endif
 
 namespace IPC {
 
 //------------------------------------------------------------------------------
 
 class Channel;
 class Message;
 struct LogData;
@@ skipping 219 matching lines @@
 
   // indicates a general message not sent to a particular tab.
   MSG_ROUTING_CONTROL = kint32max,
 };
 
 #define IPC_REPLY_ID 0xFFF0  // Special message id for replies
 #define IPC_LOGGING_ID 0xFFF1  // Special message id for logging
 
 #endif  // CHROME_COMMON_IPC_MESSAGE_H__