Fix Mac build.

Bug: N/A
Test: builds
Change-Id: I98e44bc7ec2534443a1973aacf4bb97853b3a51f
diff --git a/tests/utils.h b/tests/utils.h
index 9a8eb5d..410b427 100644
--- a/tests/utils.h
+++ b/tests/utils.h
@@ -29,6 +29,7 @@
 #include <regex>
 
 #include <android-base/file.h>
+#include <android-base/macros.h>
 #include <android-base/scopeguard.h>
 #include <android-base/stringprintf.h>