Revert of Add enable_ipc_logging build argument

ipc/ipc_channel_proxy.cc

Index: ipc/ipc_channel_proxy.cc
diff --git a/ipc/ipc_channel_proxy.cc b/ipc/ipc_channel_proxy.cc
index 1c3de84cdd1e5f33a0aa4ab56fa6aa44dcd3430b..ef1c0b2272511d4f45e081af760b814c11b2db54 100644
--- a/ipc/ipc_channel_proxy.cc
+++ b/ipc/ipc_channel_proxy.cc
@@ -78,7 +78,7 @@
 
 bool ChannelProxy::Context::TryFilters(const Message& message) {
   DCHECK(message_filter_router_);
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
   Logging* logger = Logging::GetInstance();
   if (logger->Enabled())
     logger->OnPreDispatchMessage(message);
@@ -89,7 +89,7 @@
       listener_task_runner_->PostTask(
           FROM_HERE, base::Bind(&Context::OnDispatchBadMessage, this, message));
     }
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
     if (logger->Enabled())
       logger->OnPostDispatchMessage(message);
 #endif
@@ -315,7 +315,7 @@
 
   OnDispatchConnected();
 
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
   Logging* logger = Logging::GetInstance();
   if (message.type() == IPC_LOGGING_ID) {
     logger->OnReceivedLoggingMessage(message);
@@ -330,7 +330,7 @@
   if (message.dispatch_error())
     listener_->OnBadMessageReceived(message);
 
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
   if (logger->Enabled())
     logger->OnPostDispatchMessage(message);
 #endif
@@ -530,7 +530,7 @@
     message = outgoing_message_filter()->Rewrite(message);
 #endif
 
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
   Logging::GetInstance()->OnSendMessage(message);
 #endif