Revert of Add enable_ipc_logging build argument

ipc/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_logging.h"
 
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
 #define IPC_MESSAGE_MACROS_LOG_ENABLED
 #endif
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "ipc/ipc_message_utils.h"
 #include "ipc/ipc_sender.h"
 #include "ipc/ipc_sync_message.h"
 
 #if defined(OS_POSIX)
 #include <unistd.h>
 #endif
 
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
 
 using base::Time;
 
 namespace IPC {
 
 const int kLogSendDelayMs = 100;
 
 // We use a pointer to the function table to avoid any linker dependencies on
 // all the traits used as IPC message parameters.
 LogFunctionMap* Logging::log_function_map_;
@@ skipping 258 matching lines @@
     data->sent = message.sent_time();
     data->receive = message.received_time();
     data->dispatch = Time::Now().ToInternalValue();
     data->params = params;
     data->message_name = message_name;
   }
 }
 
 }
 
-#endif  // BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#endif  // IPC_MESSAGE_LOG_ENABLED