content: Cleanup class/struct forward declarations

content/browser/service_worker/service_worker_unregister_job.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_BROWSER_SERVICE_WORKER_SERVICE_WORKER_UNREGISTER_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_UNREGISTER_JOB_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "content/browser/service_worker/service_worker_register_job_base.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "url/gurl.h"
 
 namespace content {
 
-class EmbeddedWorkerRegistry;
 class ServiceWorkerContextCore;
-class ServiceWorkerJobCoordinator;
 class ServiceWorkerRegistration;
-class ServiceWorkerStorage;
 
 // Handles the unregistration of a Service Worker.
 //
 // The unregistration process is primarily cleanup, removing everything that was
 // created during the registration process, including the
 // ServiceWorkerRegistration itself.
 class ServiceWorkerUnregisterJob : public ServiceWorkerRegisterJobBase {
  public:
   typedef base::Callback<void(int64_t registration_id,
                               ServiceWorkerStatusCode status)>
@@ skipping 26 matching lines @@
   const GURL pattern_;
   std::vector<UnregistrationCallback> callbacks_;
   bool is_promise_resolved_;
   base::WeakPtrFactory<ServiceWorkerUnregisterJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerUnregisterJob);
 };
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_UNREGISTER_JOB_H_