Introduce ServiceWorkerHandle for tracking WebServiceWorkerImpl reference

content/browser/service_worker/service_worker_register_job.h

 // 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.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_
 
 #include <vector>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 16 matching lines @@
 //  - creating a ServiceWorkerVersion for the new registration instance.
 //  - starting a worker for the ServiceWorkerVersion
 //  - telling the Version to evaluate the script
 //  - firing the 'install' event at the ServiceWorkerVersion
 //  - firing the 'activate' event at the ServiceWorkerVersion
 //  - waiting for older ServiceWorkerVersions to deactivate
 //  - designating the new version to be the 'active' version
 class ServiceWorkerRegisterJob : public ServiceWorkerRegisterJobBase {
  public:
   typedef base::Callback<void(ServiceWorkerStatusCode status,
+                              ServiceWorkerRegistration* registration,
                               ServiceWorkerVersion* version)>
       RegistrationCallback;
 
   ServiceWorkerRegisterJob(base::WeakPtr<ServiceWorkerContextCore> context,
                            const GURL& pattern,
                            const GURL& script_url);
   virtual ~ServiceWorkerRegisterJob();
 
   // Registers a callback to be called when the job completes (whether
   // successfully or not). Multiple callbacks may be registered. |process_id| is
@@ skipping 12 matching lines @@
       const scoped_refptr<ServiceWorkerRegistration>& registration);
   void RegisterAndContinue(ServiceWorkerStatusCode status);
   void UpdateAndContinue(ServiceWorkerStatusCode status);
   void OnStartWorkerFinished(ServiceWorkerStatusCode status);
   void InstallAndContinue();
   void OnInstallFinished(ServiceWorkerStatusCode status);
   void ActivateAndContinue();
   void Complete(ServiceWorkerStatusCode status);
 
   void RunCallbacks(ServiceWorkerStatusCode status,
+                    ServiceWorkerRegistration* registration,
                     ServiceWorkerVersion* version);
 
   // The ServiceWorkerStorage object should always outlive this.
   base::WeakPtr<ServiceWorkerContextCore> context_;
   scoped_refptr<ServiceWorkerRegistration> registration_;
   scoped_refptr<ServiceWorkerVersion> pending_version_;
   const GURL pattern_;
   const GURL script_url_;
   std::vector<RegistrationCallback> callbacks_;
   std::vector<int> pending_process_ids_;
   base::WeakPtrFactory<ServiceWorkerRegisterJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegisterJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_