Introduce ServiceWorkerHandle for tracking WebServiceWorkerImpl reference

content/child/service_worker/service_worker_dispatcher.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_CHILD_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_H_
 #define CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_H_
 
 #include <map>
 
 #include "base/id_map.h"
@@ skipping 52 matching lines @@
 
  private:
   typedef std::map<int, blink::WebServiceWorkerProviderClient*> ScriptClientMap;
 
   // WorkerTaskRunner::Observer implementation.
   virtual void OnWorkerRunLoopStopped() OVERRIDE;
 
   // The asynchronous success response to RegisterServiceWorker.
   void OnRegistered(int32 thread_id,
                     int32 request_id,
-                    int64 version_id);
+                    int handle_id);
   // The asynchronous success response to UregisterServiceWorker.
   void OnUnregistered(int32 thread_id,
                       int32 request_id);
   void OnRegistrationError(int32 thread_id,
                            int32 request_id,
                            blink::WebServiceWorkerError::ErrorType error_type,
                            const base::string16& message);
 
   IDMap<blink::WebServiceWorkerProvider::WebServiceWorkerCallbacks,
         IDMapOwnPointer> pending_callbacks_;
   ScriptClientMap script_clients_;
 
   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_DISPATCHER_H_