Convert //extensions/browser/api from scoped_ptr to std::unique_ptr

extensions/browser/api/storage/local_value_store_cache.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/local_value_store_cache.h"
 
 #include <stddef.h>
 
 #include <limits>
 
@@ skipping 60 matching lines @@
 }
 
 ValueStore* LocalValueStoreCache::GetStorage(const Extension* extension) {
   StorageMap::iterator iter = storage_map_.find(extension->id());
   if (iter != storage_map_.end())
     return iter->second.get();
 
   ValueStoreFactory::ModelType model_type =
       extension->is_app() ? ValueStoreFactory::ModelType::APP
                           : ValueStoreFactory::ModelType::EXTENSION;
-  scoped_ptr<ValueStore> store = storage_factory_->CreateSettingsStore(
+  std::unique_ptr<ValueStore> store = storage_factory_->CreateSettingsStore(
       settings_namespace::LOCAL, model_type, extension->id());
   linked_ptr<SettingsStorageQuotaEnforcer> storage(
       new SettingsStorageQuotaEnforcer(quota_, std::move(store)));
   DCHECK(storage.get());
 
   storage_map_[extension->id()] = storage;
   return storage.get();
 }
 
 }  // namespace extensions