Stop passing const-reference of SWRegistration in all GetRegistrationsCallbacks.

content/browser/service_worker/service_worker_controllee_request_handler.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_CONTROLLEE_REQUEST_HANDLER_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTROLLEE_REQUEST_HANDLER_H_
 
 #include <stdint.h>
 
 #include "base/gtest_prod_util.h"
@@ skipping 48 matching lines @@
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerControlleeRequestHandlerTest,
                            ActivateWaitingVersion);
   typedef ServiceWorkerControlleeRequestHandler self;
 
   // For main resource case.
   void PrepareForMainResource(const net::URLRequest* request);
   void DidLookupRegistrationForMainResource(
       ServiceWorkerStatusCode status,
-      const scoped_refptr<ServiceWorkerRegistration>& registration);
+      scoped_refptr<ServiceWorkerRegistration> registration);
   void OnVersionStatusChanged(
       ServiceWorkerRegistration* registration,
       ServiceWorkerVersion* version);
 
   void DidUpdateRegistration(
       const scoped_refptr<ServiceWorkerRegistration>& original_registration,
       ServiceWorkerStatusCode status,
       const std::string& status_message,
       int64_t registration_id);
   void OnUpdatedVersionStatusChanged(
@@ skipping 38 matching lines @@
   bool use_network_;
 
   base::WeakPtrFactory<ServiceWorkerControlleeRequestHandler> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerControlleeRequestHandler);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTROLLEE_REQUEST_HANDLER_H_