cipd: Refactor client to make it more readable.

go/src/infra/tools/cipd/local/files.go

 // 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.
 
-package cipd
+package local
 
 import (
         "fmt"
         "io"
         "io/ioutil"
         "os"
         "path/filepath"
         "strings"
 )
 
@@ skipping 390 matching lines @@
 }
 
 func (f *fileSystemDestinationFile) Write(p []byte) (n int, err error) {
         return f.nested.Write(p)
 }
 
 func (f *fileSystemDestinationFile) Close() error {
         f.closeCallback()
         return f.nested.Close()
 }