Revert of Stop passing const-reference of SWRegistration in all GetRegistrationsCallbacks.

content/browser/service_worker/service_worker_register_job.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_REGISTER_JOB_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 78 matching lines @@
   struct Internal {
     Internal();
     ~Internal();
     scoped_refptr<ServiceWorkerRegistration> registration;
 
     // Holds the version created by this job. It can be the 'installing',
     // 'waiting', or 'active' version depending on the phase.
     scoped_refptr<ServiceWorkerVersion> new_version;
   };
 
-  void set_registration(scoped_refptr<ServiceWorkerRegistration> registration);
+  void set_registration(
+      const scoped_refptr<ServiceWorkerRegistration>& registration);
   ServiceWorkerRegistration* registration();
   void set_new_version(ServiceWorkerVersion* version);
   ServiceWorkerVersion* new_version();
 
   void SetPhase(Phase phase);
 
   void StartImpl();
   void ContinueWithRegistration(
       ServiceWorkerStatusCode status,
-      scoped_refptr<ServiceWorkerRegistration> registration);
+      const scoped_refptr<ServiceWorkerRegistration>& registration);
   void ContinueWithUpdate(
       ServiceWorkerStatusCode status,
-      scoped_refptr<ServiceWorkerRegistration> registration);
+      const scoped_refptr<ServiceWorkerRegistration>& registration);
   void RegisterAndContinue();
   void ContinueWithUninstallingRegistration(
-      scoped_refptr<ServiceWorkerRegistration> existing_registration,
+      const scoped_refptr<ServiceWorkerRegistration>& existing_registration,
       ServiceWorkerStatusCode status);
   void ContinueWithRegistrationForSameScriptUrl(
-      scoped_refptr<ServiceWorkerRegistration> existing_registration,
+      const scoped_refptr<ServiceWorkerRegistration>& existing_registration,
       ServiceWorkerStatusCode status);
   void UpdateAndContinue();
   void OnStartWorkerFinished(ServiceWorkerStatusCode status);
   void OnStoreRegistrationComplete(ServiceWorkerStatusCode status);
   void InstallAndContinue();
   void DispatchInstallEvent();
   void OnInstallFinished(int request_id,
                          blink::WebServiceWorkerEventResult result,
                          bool has_fetch_handler);
   void OnInstallFailed(ServiceWorkerStatusCode status);
@@ skipping 32 matching lines @@
   std::string promise_resolved_status_message_;
   scoped_refptr<ServiceWorkerRegistration> promise_resolved_registration_;
   base::WeakPtrFactory<ServiceWorkerRegisterJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegisterJob);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTER_JOB_H_