Reland "Add enable_ipc_logging build argument"

content/child/child_thread_impl.h

Index: content/child/child_thread_impl.h
diff --git a/content/child/child_thread_impl.h b/content/child/child_thread_impl.h
index 9a4014549bc88ff05171cc8938bf68701d431c42..36790b31c8217364ec50a24ef72af3358d40b8e9 100644
--- a/content/child/child_thread_impl.h
+++ b/content/child/child_thread_impl.h
@@ -22,7 +22,7 @@
 #include "content/common/content_export.h"
 #include "content/public/child/child_thread.h"
 #include "ipc/ipc.mojom.h"
-#include "ipc/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
+#include "ipc/ipc_features.h"  // For BUILDFLAG(IPC_MESSAGE_LOG_ENABLED).
 #include "ipc/ipc_platform_file.h"
 #include "ipc/message_router.h"
 #include "mojo/public/cpp/bindings/associated_binding.h"
@@ -217,7 +217,7 @@ class CONTENT_EXPORT ChildThreadImpl
   void OnSetProfilerStatus(tracked_objects::ThreadData::Status status);
   void OnGetChildProfilerData(int sequence_number, int current_profiling_phase);
   void OnProfilingPhaseCompleted(int profiling_phase);
-#ifdef IPC_MESSAGE_LOG_ENABLED
+#if BUILDFLAG(IPC_MESSAGE_LOG_ENABLED)
   void OnSetIPCLoggingEnabled(bool enable);
 #endif