Minor changes to #includes

PiperOrigin-RevId: 888224533
Change-Id: I88e7a074c16e98e6cadb861c76b8bda4fd876a1b

absl/time/simulated_clock.h

diff --git a/absl/time/simulated_clock.h b/absl/time/simulated_clock.h
index 2225eee..b394750 100644
--- a/absl/time/simulated_clock.h
+++ b/absl/time/simulated_clock.h
@@ -25,6 +25,7 @@
 #include <optional>
 
 #include "absl/base/config.h"
+#include "absl/base/macros.h"
 #include "absl/base/nullability.h"
 #include "absl/base/thread_annotations.h"
 #include "absl/synchronization/mutex.h"