service worker: Wait for inflight requests before activating

content/browser/service_worker/service_worker_registration.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_REGISTRATION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 143 matching lines @@
   friend class base::RefCounted<ServiceWorkerRegistration>;
 
   ~ServiceWorkerRegistration() override;
 
   void UnsetVersionInternal(
       ServiceWorkerVersion* version,
       ChangedVersionAttributesMask* mask);
 
   // ServiceWorkerVersion::Listener override.
   void OnNoControllees(ServiceWorkerVersion* version) override;
+  void OnNoInflightRequests(ServiceWorkerVersion* version) override;
+
+  bool IsReadyToActivate() const;
 
   // Promotes the waiting version to active version. If |delay| is true, waits
   // a short time before attempting to start and dispatch the activate event
   // to the version.
   void ActivateWaitingVersion(bool delay);
   void ContinueActivation(
       scoped_refptr<ServiceWorkerVersion> activating_version);
   void DispatchActivateEvent(
       scoped_refptr<ServiceWorkerVersion> activating_version);
   void OnActivateEventFinished(
@@ skipping 27 matching lines @@
   std::vector<base::Closure> registration_finished_callbacks_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistration);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_