Move file_util::Delete to the base namespace

chrome/browser/extensions/api/developer_private/developer_private_api.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/extensions/api/developer_private/developer_private_api.h"
 
 #include "apps/app_load_service.h"
 #include "apps/app_restore_service.h"
 #include "apps/saved_files_service.h"
 #include "apps/shell_window.h"
@@ skipping 902 matching lines @@
       base::Bind(&DeveloperPrivateExportSyncfsFolderToLocalfsFunction::
                      ClearPrexistingDirectoryContent,
                  this,
                  project_path));
 
   return true;
 }
 
 void DeveloperPrivateExportSyncfsFolderToLocalfsFunction::
     ClearPrexistingDirectoryContent(const base::FilePath& project_path) {
-  if (!file_util::Delete(project_path, true/*recursive*/)) {
+  if (!base::Delete(project_path, true/*recursive*/)) {
     SetError("Error in copying files from sync filesystem.");
     content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
         base::Bind(&DeveloperPrivateExportSyncfsFolderToLocalfsFunction::
                        SendResponse,
                    this,
                    false));
     return;
   }
 
   pendingCopyOperationsCount_ = 1;
@@ skipping 314 matching lines @@
 
   #undef   SET_STRING
   return true;
 }
 
 DeveloperPrivateGetStringsFunction::~DeveloperPrivateGetStringsFunction() {}
 
 } // namespace api
 
 } // namespace extensions