Move directory creation functions to base namespace.

ui/surface/accelerated_surface_transformer_win_unittest.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 <d3d9.h>
 #include <random>
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/hash.h"
@@ skipping 57 matching lines @@
   surface->UnlockRect();
   return result;
 }
 
 bool WritePNGFile(const SkBitmap& bitmap, const base::FilePath& file_path) {
   std::vector<unsigned char> png_data;
   const bool discard_transparency = true;
   if (gfx::PNGCodec::EncodeBGRASkBitmap(bitmap,
                                         discard_transparency,
                                         &png_data) &&
-      file_util::CreateDirectory(file_path.DirName())) {
+      base::CreateDirectory(file_path.DirName())) {
     char* data = reinterpret_cast<char*>(&png_data[0]);
     int size = static_cast<int>(png_data.size());
     return file_util::WriteFile(file_path, data, size) == size;
   }
   return false;
 }
 
 }  // namespace
 
 // Test fixture for AcceleratedSurfaceTransformer.
@@ skipping 797 matching lines @@
     result.push_back(base::win::GetVersion());
   }
   return result;
 }
 
 }  // namespace
 
 INSTANTIATE_TEST_CASE_P(VistaAndUp,
                         AcceleratedSurfaceTransformerTest,
                         ::testing::ValuesIn(WindowsVersionIfVistaOrBetter()));