ServiceWorker: Update the install sequence as per the latest spec

content/browser/service_worker/service_worker_registration.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/service_worker_registration.h"
 
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_info.h"
 #include "content/browser/service_worker/service_worker_register_job.h"
 #include "content/browser/service_worker/service_worker_utils.h"
@@ skipping 48 matching lines @@
 }
 
 void ServiceWorkerRegistration::RemoveListener(Listener* listener) {
   listeners_.RemoveObserver(listener);
 }
 
 void ServiceWorkerRegistration::NotifyRegistrationFailed() {
   FOR_EACH_OBSERVER(Listener, listeners_, OnRegistrationFailed(this));
 }
 
+void ServiceWorkerRegistration::NotifyUpdateFound() {
+  FOR_EACH_OBSERVER(Listener, listeners_, OnUpdateFound(this));
+}
+
 ServiceWorkerRegistrationInfo ServiceWorkerRegistration::GetInfo() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   return ServiceWorkerRegistrationInfo(
       pattern(),
       registration_id_,
       GetVersionInfo(active_version_.get()),
       GetVersionInfo(waiting_version_.get()),
       GetVersionInfo(installing_version_.get()));
 }
 
@@ skipping 241 matching lines @@
   if (!context_) {
     callback.Run(ServiceWorkerStatusCode::SERVICE_WORKER_ERROR_ABORT);
     return;
   }
   context_->storage()->NotifyDoneInstallingRegistration(
       this, version.get(), status);
   callback.Run(status);
 }
 
 }  // namespace content