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

content/public/browser/service_worker_context.h

 // Copyright 2014 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_PUBLIC_BROWSER_SERVICE_WORKER_CONTEXT_H_
 #define CONTENT_PUBLIC_BROWSER_SERVICE_WORKER_CONTEXT_H_
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "url/gurl.h"
@@ skipping 31 matching lines @@
   // fulfilled or false when the JS promise is rejected.
   //
   // Unregistration can fail if:
   //  * No Service Worker was registered for |pattern|.
   //  * Something unexpected goes wrong, like a renderer crash.
   virtual void UnregisterServiceWorker(const Scope& pattern,
                                        const ResultCallback& callback) = 0;
 
   // TODO(jyasskin): Provide a way to SendMessage to a Scope.
 
+  // Synchronously releases all of the RenderProcessHosts that have Service
+  // Workers running inside them, and prevents any new Service Worker instances
+  // from starting up.
+  virtual void Terminate() = 0;
+
  protected:
   ServiceWorkerContext() {}
   virtual ~ServiceWorkerContext() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_SERVICE_WORKER_CONTEXT_H_