ServiceWorker: Enable UseCounter for ServiceWorkerGlobalScope

content/browser/service_worker/service_worker_database.h

Index: content/browser/service_worker/service_worker_database.h
diff --git a/content/browser/service_worker/service_worker_database.h b/content/browser/service_worker/service_worker_database.h
index 2a609d9353336bf40b642ffcf511013b49ac8ed9..95db8e6c1812f5784691e587969637e3c0c542bf 100644
--- a/content/browser/service_worker/service_worker_database.h
+++ b/content/browser/service_worker/service_worker_database.h
@@ -75,6 +75,7 @@ class CONTENT_EXPORT ServiceWorkerDatabase {
     std::vector<url::Origin> foreign_fetch_origins;
     base::Optional<TrialTokenValidator::FeatureToTokensMap> origin_trial_tokens;
     NavigationPreloadState navigation_preload_state;
+    std::set<uint32_t> used_features;
 
     // Not populated until ServiceWorkerStorage::StoreRegistration is called.
     int64_t resources_total_size_bytes;