Move GetFileSize, NormalizeFilePath to base namespace

chrome/browser/extensions/api/image_writer_private/operation_linux.cc

 // Copyright 2013 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 "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/threading/worker_pool.h"
 #include "chrome/browser/extensions/api/image_writer_private/error_messages.h"
 #include "chrome/browser/extensions/api/image_writer_private/operation.h"
 #include "chrome/browser/extensions/api/image_writer_private/operation_manager.h"
@@ skipping 155 matching lines @@
                  this));
 }
 
 void Operation::VerifyWriteStage2(
     scoped_ptr<std::string> image_hash) {
   DVLOG(1) << "Building MD5 sum of device: " << storage_unit_id_;
 
   int64 image_size;
   scoped_ptr<base::FilePath> device_path(new base::FilePath(storage_unit_id_));
 
-  if (!file_util::GetFileSize(image_path_, &image_size)){
+  if (!base::GetFileSize(image_path_, &image_size)){
     Error(error::kImageSize);
     return;
   }
 
   GetMD5SumOfFile(
       device_path.Pass(),
       image_size,
       50, // progress_offset
       50, // progress_scale
       base::Bind(&Operation::VerifyWriteCompare,
@@ skipping 13 matching lines @@
 
   DVLOG(2) << "Completed write verification of " << image_path_.value();
 
   SetProgress(kProgressComplete);
 
   Finish();
 }
 
 }  // namespace image_writer
 }  // namespace extensions