diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index 7d77264..0721c68 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -562,7 +562,6 @@
       'base/trace_event/trace_event_filter.cc',
       'base/trace_event/trace_event_impl.cc',
       'base/trace_event/trace_event_memory_overhead.cc',
-      'base/trace_event/trace_event_synthetic_delay.cc',
       'base/trace_event/trace_log.cc',
       'base/trace_event/trace_log_constants.cc',
       'base/trace_event/tracing_agent.cc',