Add ref count to service workers for extension API.

content/browser/service_worker/service_worker_context_wrapper.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_CONTEXT_WRAPPER_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 94 matching lines @@
       const GURL& url,
       const GURL& other_url,
       const CheckHasServiceWorkerCallback& callback) override;
   void StopAllServiceWorkersForOrigin(const GURL& origin) override;
   void ClearAllServiceWorkersForTest(const base::Closure& callback) override;
   void StartServiceWorkerForNavigationHint(
       const GURL& document_url,
       blink::WebNavigationHintType type,
       int render_process_id,
       const ResultCallback& callback) override;
+  bool IncrementPendingActivity(int64_t service_worker_version_id) override;
+  bool DecrementPendingActivity(int64_t service_worker_version_id) override;
 
   // These methods must only be called from the IO thread.
   ServiceWorkerRegistration* GetLiveRegistration(int64_t registration_id);
   ServiceWorkerVersion* GetLiveVersion(int64_t version_id);
   std::vector<ServiceWorkerRegistrationInfo> GetAllLiveRegistrationInfo();
   std::vector<ServiceWorkerVersionInfo> GetAllLiveVersionInfo();
 
   // Must be called from the IO thread.
   void HasMainFrameProviderHost(const GURL& origin,
                                 const BoolCallback& callback) const;
@@ skipping 64 matching lines @@
   bool OriginHasForeignFetchRegistrations(const GURL& origin);
 
   // Must be called from the UI thread.
   bool IsRunningNavigationHintTask(int render_process_id) const;
 
  private:
   friend class BackgroundSyncManagerTest;
   friend class base::RefCountedThreadSafe<ServiceWorkerContextWrapper>;
   friend class EmbeddedWorkerTestHelper;
   friend class EmbeddedWorkerBrowserTest;
+  friend class ServiceWorkerContext;
   friend class ServiceWorkerDispatcherHost;
   friend class ServiceWorkerInternalsUI;
   friend class ServiceWorkerNavigationHandleCore;
   friend class ServiceWorkerProcessManager;
   friend class ServiceWorkerRequestHandler;
   friend class ServiceWorkerVersionBrowserTest;
   friend class MockServiceWorkerContextWrapper;
 
   ~ServiceWorkerContextWrapper() override;
 
+  bool IncrementPendingActivityOnIO(int64_t service_worker_version_id);
+  bool DecrementPendingActivityOnIO(int64_t service_worker_version_id);
+
   void InitInternal(
       const base::FilePath& user_data_directory,
       std::unique_ptr<ServiceWorkerDatabaseTaskManager> database_task_manager,
       const scoped_refptr<base::SingleThreadTaskRunner>& disk_cache_thread,
       storage::QuotaManagerProxy* quota_manager_proxy,
       storage::SpecialStoragePolicy* special_storage_policy);
   void ShutdownOnIO();
 
   void DidFindRegistrationForFindReady(
       const FindRegistrationCallback& callback,
@@ skipping 53 matching lines @@
 
   // Raw pointer to the StoragePartitionImpl owning |this|.
   StoragePartitionImpl* storage_partition_;
 
   // The ResourceContext associated with this context.
   ResourceContext* resource_context_;
 
   // Must be touched on the UI thread.
   std::map<int, int> navigation_hint_task_count_per_process_;
 
+  // Maps service worker version id -> set of pending request ids.
+  // IO thread.
+  std::map<int64_t, std::set<int>> pending_external_requests_;
+
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerContextWrapper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_