[Cleanup] Used scoped pointers in KeyedServiceFactory's SetTestingFactory functions.

extensions/browser/api/storage/storage_frontend.cc

 // 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.
 
 #include "extensions/browser/api/storage/storage_frontend.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_path.h"
 #include "base/json/json_reader.h"
@@ skipping 47 matching lines @@
 };
 
 }  // namespace
 
 // static
 StorageFrontend* StorageFrontend::Get(BrowserContext* context) {
   return BrowserContextKeyedAPIFactory<StorageFrontend>::Get(context);
 }
 
 // static
-StorageFrontend* StorageFrontend::CreateForTesting(
+scoped_ptr<StorageFrontend> StorageFrontend::CreateForTesting(
     const scoped_refptr<SettingsStorageFactory>& storage_factory,
     BrowserContext* context) {
-  return new StorageFrontend(storage_factory, context);
+  return make_scoped_ptr(new StorageFrontend(storage_factory, context));
 }
 
 StorageFrontend::StorageFrontend(BrowserContext* context)
     : browser_context_(context) {
   Init(new LeveldbSettingsStorageFactory());
 }
 
 StorageFrontend::StorageFrontend(
     const scoped_refptr<SettingsStorageFactory>& factory,
     BrowserContext* context)
@@ skipping 94 matching lines @@
 // static
 BrowserContextKeyedAPIFactory<StorageFrontend>*
 StorageFrontend::GetFactoryInstance() {
   return g_factory.Pointer();
 }
 
 // static
 const char* StorageFrontend::service_name() { return "StorageFrontend"; }
 
 }  // namespace extensions