Stop passing const-reference of SWRegistration in all GetRegistrationsCallbacks.

content/browser/background_sync/background_sync_service_impl_unittest.cc

 // Copyright 2015 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.
 
 #include "content/browser/background_sync/background_sync_service_impl.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 33 matching lines @@
                                    const std::string& status_message,
                                    int64_t registration_id) {
   EXPECT_EQ(SERVICE_WORKER_OK, status) << ServiceWorkerStatusToString(status);
   *called = true;
   *store_registration_id = registration_id;
 }
 
 void FindServiceWorkerRegistrationCallback(
     scoped_refptr<ServiceWorkerRegistration>* out_registration,
     ServiceWorkerStatusCode status,
-    const scoped_refptr<ServiceWorkerRegistration>& registration) {
+    scoped_refptr<ServiceWorkerRegistration> registration) {
   EXPECT_EQ(SERVICE_WORKER_OK, status) << ServiceWorkerStatusToString(status);
   *out_registration = registration;

[nhiroki, 2016/07/25 09:15:40]

std::move

[horo, 2016/07/25 09:32:01]

Done.

 }
 
 // Callbacks from BackgroundSyncServiceImpl methods
 
 void ErrorAndRegistrationCallback(
     bool* called,
     blink::mojom::BackgroundSyncError* out_error,
     blink::mojom::SyncRegistrationPtr* out_registration,
     blink::mojom::BackgroundSyncError error,
     blink::mojom::SyncRegistrationPtr registration) {
@@ skipping 189 matching lines @@
   EXPECT_EQ(blink::mojom::BackgroundSyncError::NONE, register_error);
   GetRegistrations(base::Bind(&ErrorAndRegistrationListCallback,
                               &getregistrations_called, &getregistrations_error,
                               &array_size));
   EXPECT_TRUE(getregistrations_called);
   EXPECT_EQ(blink::mojom::BackgroundSyncError::NONE, getregistrations_error);
   EXPECT_EQ(1UL, array_size);
 }
 
 }  // namespace content