diff --git a/tools/gn/bootstrap/bootstrap.py b/tools/gn/bootstrap/bootstrap.py
index ddabe31..2f5e995 100755
--- a/tools/gn/bootstrap/bootstrap.py
+++ b/tools/gn/bootstrap/bootstrap.py
@@ -214,7 +214,6 @@
       'base/process/kill.cc',
       'base/process/process_iterator.cc',
       'base/process/process_metrics.cc',
-      'base/profiler/alternate_timer.cc',
       'base/profiler/tracked_time.cc',
       'base/run_loop.cc',
       'base/sequence_checker_impl.cc',