Move directory creation functions to base namespace.

net/base/directory_lister_unittest.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 <list>
 #include <utility>
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 104 matching lines @@
             base::PLATFORM_FILE_CREATE | base::PLATFORM_FILE_WRITE,
             NULL,
             NULL);
         ASSERT_NE(base::kInvalidPlatformFileValue, file);
         ASSERT_TRUE(base::ClosePlatformFile(file));
       }
       if (dir_data.second < kMaxDepth - 1) {
         for (int i = 0; i < kBranchingFactor; i++) {
           std::string dir_name = base::StringPrintf("child_dir_%d", i);
           base::FilePath dir_path = dir_data.first.AppendASCII(dir_name);
-          ASSERT_TRUE(file_util::CreateDirectory(dir_path));
+          ASSERT_TRUE(base::CreateDirectory(dir_path));
           directories.push_back(std::make_pair(dir_path, dir_data.second + 1));
         }
       }
     }
     PlatformTest::SetUp();
   }
 
   const base::FilePath& root_path() const {
     return temp_root_dir_.path();
   }
@@ skipping 50 matching lines @@
   lister.Start();
 
   base::MessageLoop::current()->Run();
 
   // Contains only the parent directory ("..")
   EXPECT_EQ(1, delegate.num_files());
   EXPECT_EQ(OK, delegate.error());
 }
 
 }  // namespace net