Stop ServiceWorker context when no controllee is associated (and when all refs are dropped)

content/browser/service_worker/service_worker_version.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_VERSION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/id_map.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
+#include "base/timer/timer.h"
 #include "content/browser/service_worker/embedded_worker_instance.h"
 #include "content/browser/service_worker/service_worker_script_cache_map.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "third_party/WebKit/public/platform/WebServiceWorkerEventResult.h"
 
 class GURL;
 
 namespace content {
@@ skipping 154 matching lines @@
 
   // Returns true if this has at least one process to run.
   bool HasProcessToRun() const;
 
   // Adds and removes |provider_host| as a controllee of this ServiceWorker.
   void AddControllee(ServiceWorkerProviderHost* provider_host);
   void RemoveControllee(ServiceWorkerProviderHost* provider_host);
   void AddPendingControllee(ServiceWorkerProviderHost* provider_host);
   void RemovePendingControllee(ServiceWorkerProviderHost* provider_host);
 
-  // Returns if it has (non-pending) controllee.
+  // Returns if it has controllee.
   bool HasControllee() const { return !controllee_map_.empty(); }
 
   // Adds and removes Listeners.
   void AddListener(Listener* listener);
   void RemoveListener(Listener* listener);
 
   ServiceWorkerScriptCacheMap* script_cache_map() { return &script_cache_map_; }
   EmbeddedWorkerInstance* embedded_worker() { return embedded_worker_.get(); }
 
  private:
@@ skipping 31 matching lines @@
   void OnInstallEventFinished(int request_id,
                               blink::WebServiceWorkerEventResult result);
   void OnFetchEventFinished(int request_id,
                             ServiceWorkerFetchEventResult result,
                             const ServiceWorkerResponse& response);
   void OnSyncEventFinished(int request_id);
   void OnPostMessageToDocument(int client_id,
                                const base::string16& message,
                                const std::vector<int>& sent_message_port_ids);
 
+  void ScheduleStopWorker();
+
   const int64 version_id_;
   int64 registration_id_;
   GURL script_url_;
   GURL scope_;
   Status status_;
   scoped_ptr<EmbeddedWorkerInstance> embedded_worker_;
   std::vector<StatusCallback> start_callbacks_;
   std::vector<StatusCallback> stop_callbacks_;
   std::vector<base::Closure> status_change_callbacks_;
 
   // Message callbacks.
   IDMap<StatusCallback, IDMapOwnPointer> activate_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> install_callbacks_;
   IDMap<FetchCallback, IDMapOwnPointer> fetch_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> sync_callbacks_;
 
   ControlleeMap controllee_map_;
   ControlleeByIDMap controllee_by_id_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
   ObserverList<Listener> listeners_;
   ServiceWorkerScriptCacheMap script_cache_map_;
+  base::OneShotTimer<ServiceWorkerVersion> stop_worker_timer_;
 
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerVersion);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_