Stop passing const-reference of SWRegistration in all GetRegistrationsCallbacks.

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>
@@ skipping 33 matching lines @@
 
   // ServiceWorkerRegisterJobBase implementation:
   void Start() override;
   void Abort() override;
   bool Equals(ServiceWorkerRegisterJobBase* job) const override;
   RegistrationJobType GetType() const override;
 
  private:
   void OnRegistrationFound(
       ServiceWorkerStatusCode status,
-      const scoped_refptr<ServiceWorkerRegistration>& registration);
+      scoped_refptr<ServiceWorkerRegistration> registration);
   void Complete(int64_t registration_id, ServiceWorkerStatusCode status);
   void CompleteInternal(int64_t registration_id,
                         ServiceWorkerStatusCode status);
   void ResolvePromise(int64_t registration_id, ServiceWorkerStatusCode status);
 
   base::WeakPtr<ServiceWorkerContextCore> context_;
   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_