diff --git a/content/browser/BUILD.gn b/content/browser/BUILD.gn
index f96f9f5..577ed6d 100644
--- a/content/browser/BUILD.gn
+++ b/content/browser/BUILD.gn
@@ -22,6 +22,7 @@
     "//base",
     "//base:base_static",
     "//content:resources",
+    "//content/browser/background_sync:background_sync_proto",
     "//content/browser/notifications:notification_proto",
     "//content/browser/service_worker:service_worker_proto",
     "//content/browser/speech/proto",