ServiceWorker: Enable UseCounter for ServiceWorkerGlobalScope

content/browser/service_worker/service_worker_database.cc

Index: content/browser/service_worker/service_worker_database.cc
diff --git a/content/browser/service_worker/service_worker_database.cc b/content/browser/service_worker/service_worker_database.cc
index e4ba933801d85c71c031495ba61e6453f9139c81..57e0e380f75ed2b2d5099e1c5f2d405e0c96f080 100644
--- a/content/browser/service_worker/service_worker_database.cc
+++ b/content/browser/service_worker/service_worker_database.cc
@@ -1291,6 +1291,9 @@ ServiceWorkerDatabase::Status ServiceWorkerDatabase::ParseRegistrationData(
       out->navigation_preload_state.header = state.header();
   }
 
+  for (uint32_t feature : data.used_features())
+    out->used_features.insert(feature);
+
   return ServiceWorkerDatabase::STATUS_OK;
 }
 
@@ -1337,6 +1340,9 @@ void ServiceWorkerDatabase::WriteRegistrationDataInBatch(
   state->set_enabled(registration.navigation_preload_state.enabled);
   state->set_header(registration.navigation_preload_state.header);
 
+  for (int32_t feature : registration.used_features)

[dcheng, 2017/02/13 21:25:02]

Nit: uint32_t feature

[nhiroki, 2017/02/14 02:22:34]

Good catch! Fixed.

+    data.add_used_features(feature);
+
   std::string value;
   bool success = data.SerializeToString(&value);
   DCHECK(success);