diff --git a/tools/under-control/file_list.txt b/tools/under-control/file_list.txt
index 50ade6ba5..d5d6c7d85 100644
--- a/tools/under-control/file_list.txt
+++ b/tools/under-control/file_list.txt
@@ -30,3 +30,5 @@ services/network/network_context.cc
 gin/v8_initializer.cc
 
 media/base/video_codecs.h
+
+testing/variations/fieldtrial_testing_config.json