Move GetFileSize, NormalizeFilePath to base namespace

chrome/browser/chromeos/drive/file_system/copy_operation.cc

 // Copyright (c) 2012 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 "chrome/browser/chromeos/drive/file_system/copy_operation.h"
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/task_runner_util.h"
@@ skipping 36 matching lines @@
   // Drive File System doesn't support recursive copy.
   if (src_entry->file_info().is_directory())
     return FILE_ERROR_NOT_A_FILE;
 
   *parent_resource_id = parent_entry.resource_id();
   return FILE_ERROR_OK;
 }
 
 int64 GetFileSize(const base::FilePath& file_path) {
   int64 file_size;
-  if (!file_util::GetFileSize(file_path, &file_size))
+  if (!base::GetFileSize(file_path, &file_size))
     return -1;
   return file_size;
 }
 
 // Stores the copied entry and returns its path.
 FileError UpdateLocalStateForServerSideCopy(
     internal::ResourceMetadata* metadata,
     scoped_ptr<google_apis::ResourceEntry> resource_entry,
     base::FilePath* file_path) {
   DCHECK(resource_entry);
@@ skipping 520 matching lines @@
   }
 
   DCHECK_EQ(util::GetDriveMyDriveRootPath().value(),
             file_path->DirName().value()) << file_path->value();
 
   move_operation_->Move(*file_path, dest_path, false, callback);
 }
 
 }  // namespace file_system
 }  // namespace drive