Stop passing const-reference of SWRegistration in all GetRegistrationsCallbacks.

content/browser/devtools/protocol/service_worker_handler.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/devtools/protocol/service_worker_handler.h"
 
 #include "base/bind.h"
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 251 matching lines @@
   }
   NOTREACHED() << type;
   return std::string();
 }
 
 void DidFindRegistrationForDispatchSyncEventOnIO(
     scoped_refptr<BackgroundSyncContext> sync_context,
     const std::string& tag,
     bool last_chance,
     ServiceWorkerStatusCode status,
-    const scoped_refptr<content::ServiceWorkerRegistration>& registration) {
+    scoped_refptr<content::ServiceWorkerRegistration> registration) {
   if (status != SERVICE_WORKER_OK || !registration->active_version())
     return;
   BackgroundSyncManager* background_sync_manager =
       sync_context->background_sync_manager();
   scoped_refptr<content::ServiceWorkerVersion> version(
       registration->active_version());
   // Keep the registration while dispatching the sync event.
   background_sync_manager->EmulateDispatchSyncEvent(
       tag, std::move(version), last_chance,
-      base::Bind(&StatusNoOpKeepingRegistration, registration));
+      base::Bind(&StatusNoOpKeepingRegistration, std::move(registration)));
 }
 
 void DispatchSyncEventOnIO(scoped_refptr<ServiceWorkerContextWrapper> context,
                            scoped_refptr<BackgroundSyncContext> sync_context,
                            const GURL& origin,
                            int64_t registration_id,
                            const std::string& tag,
                            bool last_chance) {
   context->FindReadyRegistrationForId(
       registration_id, origin,
@@ skipping 399 matching lines @@
 }
 
 void ServiceWorkerHandler::ClearForceUpdate() {
   if (context_)
     context_->SetForceUpdateOnPageLoad(false);
 }
 
 }  // namespace service_worker
 }  // namespace devtools
 }  // namespace content