Don't drop messages/events send to a service worker that is stopping.

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 231 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerVersionTest, ScheduleStopWorker);
   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() override;
+  void OnStopped(EmbeddedWorkerInstance::Status old_status) override;
   void OnReportException(const base::string16& error_message,
                          int line_number,
                          int column_number,
                          const GURL& source_url) override;
   void OnReportConsoleMessage(int source_identifier,
                               int message_level,
                               const base::string16& message,
                               int line_number,
                               const GURL& source_url) override;
   bool OnMessageReceived(const IPC::Message& message) override;
@@ skipping 52 matching lines @@
   bool is_doomed_;
 
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerVersion);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_