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

content/browser/service_worker/service_worker_context_wrapper.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_CONTEXT_WRAPPER_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 194 matching lines @@
       const base::FilePath& user_data_directory,
       std::unique_ptr<ServiceWorkerDatabaseTaskManager> database_task_manager,
       const scoped_refptr<base::SingleThreadTaskRunner>& disk_cache_thread,
       storage::QuotaManagerProxy* quota_manager_proxy,
       storage::SpecialStoragePolicy* special_storage_policy);
   void ShutdownOnIO();
 
   void DidFindRegistrationForFindReady(
       const FindRegistrationCallback& callback,
       ServiceWorkerStatusCode status,
-      scoped_refptr<ServiceWorkerRegistration> registration);
+      const scoped_refptr<ServiceWorkerRegistration>& registration);
   void OnStatusChangedForFindReadyRegistration(
       const FindRegistrationCallback& callback,
-      scoped_refptr<ServiceWorkerRegistration> registration);
+      const scoped_refptr<ServiceWorkerRegistration>& registration);
 
   void DidDeleteAndStartOver(ServiceWorkerStatusCode status);
 
   void DidGetAllRegistrationsForGetAllOrigins(
       const GetUsageInfoCallback& callback,
       ServiceWorkerStatusCode status,
       const std::vector<ServiceWorkerRegistrationInfo>& registrations);
 
   void DidCheckHasServiceWorker(const CheckHasServiceWorkerCallback& callback,
                                 bool has_service_worker);
 
   void DidFindRegistrationForUpdate(
       ServiceWorkerStatusCode status,
-      scoped_refptr<content::ServiceWorkerRegistration> registration);
+      const scoped_refptr<content::ServiceWorkerRegistration>& registration);
 
   // The core context is only for use on the IO thread.
   // Can be null before/during init, during/after shutdown, and after
   // DeleteAndStartOver fails.
   ServiceWorkerContextCore* context();
 
   const scoped_refptr<base::ObserverListThreadSafe<
       ServiceWorkerContextObserver>> observer_list_;
   const std::unique_ptr<ServiceWorkerProcessManager> process_manager_;
   // Cleared in ShutdownOnIO():
   std::unique_ptr<ServiceWorkerContextCore> context_core_;
 
   // Initialized in Init(); true if the user data directory is empty.
   bool is_incognito_;
 
   // Raw pointer to the StoragePartitionImpl owning |this|.
   StoragePartitionImpl* storage_partition_;
 
   // The ResourceContext associated with this context.
   ResourceContext* resource_context_;
 
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerContextWrapper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_WRAPPER_H_