Move directory creation functions to base namespace.

tools/gn/ninja_toolchain_writer.cc

 // Copyright (c) 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 "tools/gn/ninja_toolchain_writer.h"
 
 #include <fstream>
 
 #include "base/file_util.h"
 #include "base/strings/stringize_macros.h"
@@ skipping 29 matching lines @@
 bool NinjaToolchainWriter::RunAndWriteFile(
     const Settings* settings,
     const Toolchain* toolchain,
     const std::vector<const Target*>& targets) {
   NinjaHelper helper(settings->build_settings());
   base::FilePath ninja_file(settings->build_settings()->GetFullPath(
       helper.GetNinjaFileForToolchain(settings).GetSourceFile(
           settings->build_settings())));
   ScopedTrace trace(TraceItem::TRACE_FILE_WRITE, FilePathToUTF8(ninja_file));
 
-  file_util::CreateDirectory(ninja_file.DirName());
+  base::CreateDirectory(ninja_file.DirName());
 
   std::ofstream file;
   file.open(FilePathToUTF8(ninja_file).c_str(),
             std::ios_base::out | std::ios_base::binary);
   if (file.fail())
     return false;
 
   NinjaToolchainWriter gen(settings, toolchain, targets, file);
   gen.Run();
   return true;
@@ skipping 33 matching lines @@
 void NinjaToolchainWriter::WriteSubninjas() {
   // Write subninja commands for each generated target.
   for (size_t i = 0; i < targets_.size(); i++) {
     OutputFile ninja_file = helper_.GetNinjaFileForTarget(targets_[i]);
     out_ << "subninja ";
     path_output_.WriteFile(out_, ninja_file);
     out_ << std::endl;
   }
   out_ << std::endl;
 }