cmd/autogazelle/autogazelle.go
func restoreBuildFilesInRepo() {
	err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
		if err != nil {
			log.Print(err)
			return nil
		}
		restoreBuildFilesInDir(path)
		return nil
	})
	if err != nil {
		log.Print(err)
	}
}
func restoreBuildFilesInRepo() {
	err := filepath.Walk(".", func(path string, info os.FileInfo, err error) error {
		if err != nil {
			log.Print(err)
			return nil
		}
		restoreBuildFilesInDir(path)
		return nil
	})
	if err != nil {
		log.Print(err)
	}
}
// restoreBuildFilesInRepo copies BUILD.in and BUILD.bazel.in files and
// copies them to BUILD and BUILD.bazel.