Update installed ServiceWorkers.

content/browser/service_worker/service_worker_context_core.cc

Index: content/browser/service_worker/service_worker_context_core.cc
diff --git a/content/browser/service_worker/service_worker_context_core.cc b/content/browser/service_worker/service_worker_context_core.cc
index 933aa5f7ce7618d4acc53aeeb103e2ab1fb5c977..1943ee890a619f5cfa219a71659c37460dca0ac1 100644
--- a/content/browser/service_worker/service_worker_context_core.cc
+++ b/content/browser/service_worker/service_worker_context_core.cc
@@ -205,6 +205,14 @@ void ServiceWorkerContextCore::UnregisterServiceWorker(
                  callback));
 }
 
+void ServiceWorkerContextCore::UpdateServiceWorker(
+    ServiceWorkerRegistration* registration) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  if (storage()->IsDisabled())
+    return;
+  job_coordinator_->Update(registration);
+}
+
 void ServiceWorkerContextCore::RegistrationComplete(
     const GURL& pattern,
     const ServiceWorkerContextCore::RegistrationCallback& callback,