Revert of Add enable_ipc_logging build argument

content/child/child_thread_impl.cc

Index: content/child/child_thread_impl.cc
diff --git a/content/child/child_thread_impl.cc b/content/child/child_thread_impl.cc
index 6d6227f0e0d173efc23fee301617ac800ddf20ca..458604f431af855cc781862bbec924b85e2ad701 100644
--- a/content/child/child_thread_impl.cc
+++ b/content/child/child_thread_impl.cc
@@ -414,7 +414,7 @@
   g_lazy_tls.Pointer()->Set(this);
   on_channel_error_called_ = false;
   message_loop_ = base::MessageLoop::current();
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
   // We must make sure to instantiate the IPC Logger *before* we create the
   // channel, otherwise we can get a callback on the IO thread which creates
   // the logger, and the logger does not like being created on the IO thread.
@@ -424,7 +424,7 @@
   channel_ =
       IPC::SyncChannel::Create(this, ChildProcess::current()->io_task_runner(),
                                ChildProcess::current()->GetShutDownEvent());
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
   if (!IsInBrowserProcess())
     IPC::Logging::GetInstance()->SetIPCSender(this);
 #endif
@@ -572,7 +572,7 @@
 }
 
 ChildThreadImpl::~ChildThreadImpl() {
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#ifdef IPC_MESSAGE_LOG_ENABLED
   IPC::Logging::GetInstance()->SetIPCSender(NULL);
 #endif
 
@@ -727,7 +727,7 @@
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ChildThreadImpl, msg)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_Shutdown, OnShutdown)
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#if defined(IPC_MESSAGE_LOG_ENABLED)
     IPC_MESSAGE_HANDLER(ChildProcessMsg_SetIPCLoggingEnabled,
                         OnSetIPCLoggingEnabled)
 #endif
@@ -798,7 +798,7 @@
   base::MessageLoop::current()->QuitWhenIdle();
 }
 
-#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
+#if defined(IPC_MESSAGE_LOG_ENABLED)
 void ChildThreadImpl::OnSetIPCLoggingEnabled(bool enable) {
   if (enable)
     IPC::Logging::GetInstance()->Enable();