Convert //services from scoped_ptr to std::unique_ptr

services/user/user_service.cc

Index: services/user/user_service.cc
diff --git a/services/user/user_service.cc b/services/user/user_service.cc
index eb8a1be2f0bed1c46c28343329ce0f18d06f57b6..36292d31faec3b637011460368045615d734b140 100644
--- a/services/user/user_service.cc
+++ b/services/user/user_service.cc
@@ -27,9 +27,8 @@ UserService::~UserService() {}
 
 void UserService::GetDirectory(filesystem::DirectoryRequest request,
                                const GetDirectoryCallback& callback) {
-  new filesystem::DirectoryImpl(std::move(request),
-                                path_,
-                                scoped_ptr<base::ScopedTempDir>(),
+  new filesystem::DirectoryImpl(std::move(request), path_,
+                                std::unique_ptr<base::ScopedTempDir>(),
                                 lock_table_);
   callback.Run();
 }
@@ -51,7 +50,8 @@ void UserService::GetSubDirectory(const mojo::String& sub_directory_path,
   }
 
   new filesystem::DirectoryImpl(std::move(request), subdir,
-                                scoped_ptr<base::ScopedTempDir>(), lock_table_);
+                                std::unique_ptr<base::ScopedTempDir>(),
+                                lock_table_);
   callback.Run(filesystem::FileError::OK);
 }