Shut down the ServiceWorker system as the browser's shutting down.

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 <vector>
 
 #include "base/files/file_path.h"
@@ skipping 44 matching lines @@
   }
 
   // ServiceWorkerContext implementation:
   virtual void RegisterServiceWorker(
       const GURL& pattern,
       const GURL& script_url,
       const ResultCallback& continuation) OVERRIDE;
   virtual void UnregisterServiceWorker(const GURL& pattern,
                                        const ResultCallback& continuation)
       OVERRIDE;
+  virtual void Terminate() OVERRIDE;
 
   void AddObserver(ServiceWorkerContextObserver* observer);
   void RemoveObserver(ServiceWorkerContextObserver* observer);
 
  private:
   friend class base::RefCountedThreadSafe<ServiceWorkerContextWrapper>;
   friend class EmbeddedWorkerTestHelper;
   friend class ServiceWorkerProcessManager;
   virtual ~ServiceWorkerContextWrapper();
 
   void InitInternal(const base::FilePath& user_data_directory,
                     base::SequencedTaskRunner* database_task_runner,
                     base::MessageLoopProxy* disk_cache_thread,
                     quota::QuotaManagerProxy* quota_manager_proxy);
   void ShutdownOnIO();
 
   const scoped_refptr<ObserverListThreadSafe<ServiceWorkerContextObserver> >
       observer_list_;
   const scoped_ptr<ServiceWorkerProcessManager> process_manager_;
   // Cleared in Shutdown():
   scoped_ptr<ServiceWorkerContextCore> context_core_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_