Populate .current when navigator.serviceWorker is accessed

content/browser/service_worker/service_worker_dispatcher_host.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_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_HOST_H_
 
 #include "base/id_map.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
@@ skipping 49 matching lines @@
                                int request_id,
                                int provider_id,
                                const GURL& pattern,
                                const GURL& script_url);
   void OnUnregisterServiceWorker(int thread_id,
                                  int request_id,
                                  int provider_id,
                                  const GURL& pattern);
   void OnProviderCreated(int provider_id);
   void OnProviderDestroyed(int provider_id);
-  void OnAddScriptClient(int thread_id, int provider_id);
-  void OnRemoveScriptClient(int thread_id, int provider_id);
   void OnSetHostedVersionId(int provider_id, int64 version_id);
   void OnWorkerStarted(int thread_id,
                        int embedded_worker_id);
   void OnWorkerStopped(int embedded_worker_id);
   void OnReportException(int embedded_worker_id,
                          const base::string16& error_message,
                          int line_number,
                          int column_number,
                          const GURL& source_url);
   void OnReportConsoleMessage(
       int embedded_worker_id,
       const EmbeddedWorkerHostMsg_ReportConsoleMessage_Params& params);
   void OnPostMessage(int handle_id,
                      const base::string16& message,
                      const std::vector<int>& sent_message_port_ids);
-  void OnServiceWorkerObjectDestroyed(int handle_id);
+  void OnIncrementServiceWorkerRefCount(int handle_id);
+  void OnDecrementServiceWorkerRefCount(int handle_id);
 
   // Callbacks from ServiceWorkerContextCore
   void RegistrationComplete(int thread_id,
                             int request_id,
                             ServiceWorkerStatusCode status,
                             int64 registration_id,
                             int64 version_id);
 
   void UnregistrationComplete(int thread_id,
                               int request_id,
@@ skipping 11 matching lines @@
 
   bool channel_ready_;  // True after BrowserMessageFilter::channel_ != NULL.
   ScopedVector<IPC::Message> pending_messages_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_HOST_H_