BackgroundSyncManager tracks client registrations

content/browser/service_worker/service_worker_version.cc

Index: content/browser/service_worker/service_worker_version.cc
diff --git a/content/browser/service_worker/service_worker_version.cc b/content/browser/service_worker/service_worker_version.cc
index f1637dff61e6d16e78a13dd84fe2e1f764ae2682..55d0eba93bd0fd60bc152a0255b1c2de53039a50 100644
--- a/content/browser/service_worker/service_worker_version.cc
+++ b/content/browser/service_worker/service_worker_version.cc
@@ -814,8 +814,9 @@ void ServiceWorkerVersion::DispatchFetchEvent(
   }
 }
 
-void ServiceWorkerVersion::DispatchSyncEvent(SyncRegistrationPtr registration,
-                                             const StatusCallback& callback) {
+void ServiceWorkerVersion::DispatchSyncEvent(
+    BackgroundSyncRegistrationHandle::HandleId handle_id,
+    const StatusCallback& callback) {
   OnBeginEvent();
   DCHECK_EQ(ACTIVATED, status()) << status();
   if (running_status() != RUNNING) {
@@ -823,7 +824,7 @@ void ServiceWorkerVersion::DispatchSyncEvent(SyncRegistrationPtr registration,
     StartWorker(base::Bind(
         &RunTaskAfterStartWorker, weak_factory_.GetWeakPtr(), callback,
         base::Bind(&self::DispatchSyncEvent, weak_factory_.GetWeakPtr(),
-                   base::Passed(registration.Pass()), callback)));
+                   handle_id, callback)));
     return;
   }
 
@@ -837,8 +838,8 @@ void ServiceWorkerVersion::DispatchSyncEvent(SyncRegistrationPtr registration,
   }
 
   background_sync_dispatcher_->Sync(
-      registration.Pass(), base::Bind(&self::OnSyncEventFinished,
-                                      weak_factory_.GetWeakPtr(), request_id));
+      handle_id, base::Bind(&self::OnSyncEventFinished,
+                            weak_factory_.GetWeakPtr(), request_id));
 }
 
 void ServiceWorkerVersion::DispatchNotificationClickEvent(