Re-write many calls to WrapUnique() with MakeUnique()

services/file/file_service.cc

Index: services/file/file_service.cc
diff --git a/services/file/file_service.cc b/services/file/file_service.cc
index 7a0c684b64d533e9b1761570daec52aa06279fc3..ecc330ddea3017ba9ec27daf797dd583e5a8d8eb 100644
--- a/services/file/file_service.cc
+++ b/services/file/file_service.cc
@@ -73,8 +73,8 @@ std::unique_ptr<shell::Service> CreateFileService(
     scoped_refptr<base::SingleThreadTaskRunner> file_service_runner,
     scoped_refptr<base::SingleThreadTaskRunner> leveldb_service_runner,
     const base::Closure& quit_closure) {
-  return base::WrapUnique(new FileService(
-      std::move(file_service_runner), std::move(leveldb_service_runner)));
+  return base::MakeUnique<FileService>(std::move(file_service_runner),
+                                       std::move(leveldb_service_runner));
 }
 
 FileService::FileService(