diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 9e91859..ef07f17 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -1112,6 +1112,8 @@
     "performance_manager/observers/metrics_collector.h",
     "performance_manager/observers/page_load_metrics_observer.cc",
     "performance_manager/observers/page_load_metrics_observer.h",
+    "performance_manager/policies/page_freezing_policy.cc",
+    "performance_manager/policies/page_freezing_policy.h",
     "performance_manager/policies/policy_features.cc",
     "performance_manager/policies/policy_features.h",
     "performance_manager/policies/working_set_trimmer_policy.cc",