ServiceWorker: Get registration info and its version attributes in one lock operation

content/child/service_worker/service_worker_dispatcher.cc

Index: content/child/service_worker/service_worker_dispatcher.cc
diff --git a/content/child/service_worker/service_worker_dispatcher.cc b/content/child/service_worker/service_worker_dispatcher.cc
index f33b86a0c8b0988c1aa209eaa24b37aafec8eec0..3ea4790ae9f08fe3c8a454f3f1b84fe37bb554f0 100644
--- a/content/child/service_worker/service_worker_dispatcher.cc
+++ b/content/child/service_worker/service_worker_dispatcher.cc
@@ -585,14 +585,16 @@ void ServiceWorkerDispatcher::SetReadyRegistration(
   if (client == provider_clients_.end())
     return;
 
-  ServiceWorkerRegistrationObjectInfo info =
-      provider->second->registration()->info();
+  ServiceWorkerRegistrationObjectInfo info;
+  ServiceWorkerVersionAttributes attrs;
+  bool found =
+      provider->second->GetRegistrationInfoAndVersionAttributes(&info, &attrs);
+  DCHECK(found);
+
   WebServiceWorkerRegistrationImpl* registration =
       FindServiceWorkerRegistration(info, false);
   if (!registration) {
     registration = CreateServiceWorkerRegistration(info, false);
-    ServiceWorkerVersionAttributes attrs =
-        provider->second->GetVersionAttributes();
     registration->SetInstalling(GetServiceWorker(attrs.installing, false));
     registration->SetWaiting(GetServiceWorker(attrs.waiting, false));
     registration->SetActive(GetServiceWorker(attrs.active, false));