Keep alive ServiceWorkers when devtools is attached

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 <map>
 #include <string>
 #include <vector>
@@ skipping 230 matching lines @@
 
   ServiceWorkerScriptCacheMap* script_cache_map() { return &script_cache_map_; }
   EmbeddedWorkerInstance* embedded_worker() { return embedded_worker_.get(); }
 
   // Dooms this version to have REDUNDANT status and its resources deleted.  If
   // the version is controlling a page, these changes will happen when the
   // version no longer controls any pages.
   void Doom();
   bool is_doomed() const { return is_doomed_; }
 
+  void SetDevToolsAttached(bool attached);
+
  private:
   friend class base::RefCounted<ServiceWorkerVersion>;
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerControlleeRequestHandlerTest,
                            ActivateWaitingVersion);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerVersionTest, ScheduleStopWorker);
+  FRIEND_TEST_ALL_PREFIXES(ServiceWorkerVersionTest, KeepAlive);
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerVersionTest, ListenerAvailability);
   typedef ServiceWorkerVersion self;
   typedef std::map<ServiceWorkerProviderHost*, int> ControlleeMap;
   typedef IDMap<ServiceWorkerProviderHost> ControlleeByIDMap;
 
   ~ServiceWorkerVersion() override;
 
   // EmbeddedWorkerInstance::Listener overrides:
   void OnStarted() override;
   void OnStopped(EmbeddedWorkerInstance::Status old_status) override;
@@ skipping 33 matching lines @@
   void OnPushEventFinished(int request_id,
                            blink::WebServiceWorkerEventResult result);
   void OnGeofencingEventFinished(int request_id);
   void OnPostMessageToDocument(int client_id,
                                const base::string16& message,
                                const std::vector<int>& sent_message_port_ids);
   void OnFocusClient(int request_id, int client_id);
 
   void OnFocusClientFinished(int request_id, bool result);
   void ScheduleStopWorker();
+  void StopWorkerIfIdle();
+  bool HasInflightRequests() const;
+
   void DoomInternal();
 
   const int64 version_id_;
   int64 registration_id_;
   GURL script_url_;
   GURL scope_;
   Status status_;
   scoped_ptr<EmbeddedWorkerInstance> embedded_worker_;
   scoped_ptr<ServiceWorkerCacheListener> cache_listener_;
   std::vector<StatusCallback> start_callbacks_;
   std::vector<StatusCallback> stop_callbacks_;
   std::vector<base::Closure> status_change_callbacks_;
 
-  // Message callbacks.
+  // Message callbacks. (Update HasInflightRequests() too when you update this
+  // list.)
   IDMap<StatusCallback, IDMapOwnPointer> activate_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> install_callbacks_;
   IDMap<FetchCallback, IDMapOwnPointer> fetch_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> sync_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> notification_click_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> push_callbacks_;
   IDMap<StatusCallback, IDMapOwnPointer> geofencing_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::OneShotTimer<ServiceWorkerVersion> update_timer_;
   bool is_doomed_;
 
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerVersion);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_