Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/devtools/devtools_file_helper.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/devtools/devtools_file_helper.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 104 matching lines @@
   CanceledCallback canceled_callback_;
   WebContents* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(SelectFileDialog);
 };
 
 void WriteToFile(const base::FilePath& path, const std::string& content) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   DCHECK(!path.empty());
 
-  file_util::WriteFile(path, content.c_str(), content.length());
+  base::WriteFile(path, content.c_str(), content.length());
 }
 
 void AppendToFile(const base::FilePath& path, const std::string& content) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   DCHECK(!path.empty());
 
   file_util::AppendToFile(path, content.c_str(), content.length());
 }
 
 fileapi::IsolatedContext* isolated_context() {
@@ skipping 284 matching lines @@
   base::DictionaryValue* file_systems_paths_value = update.Get();
   file_systems_paths_value->RemoveWithoutPathExpansion(file_system_path, NULL);
 }
 
 bool DevToolsFileHelper::IsFileSystemAdded(
     const std::string& file_system_path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   set<std::string> file_system_paths = GetAddedFileSystemPaths(profile_);
   return file_system_paths.find(file_system_path) != file_system_paths.end();
 }