Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the base namespace.

net/test/python_utils.cc

 // Copyright (c) 2011 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 "net/test/python_utils.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/file_util.h"
@@ skipping 30 matching lines @@
 
 namespace {
 
 // Search for |to_try|, rolling up the directory tree from
 // |start_dir|.  If found, return true and put the path to |to_try| in
 // |out_dir|.  If not, return false and leave |out_dir| untouched.
 bool TryRelativeToDir(const base::FilePath& start_dir,
                       const base::FilePath& to_try,
                       base::FilePath* out_dir) {
   base::FilePath dir(start_dir);
-  while (!file_util::DirectoryExists(dir.Append(to_try))) {
+  while (!base::DirectoryExists(dir.Append(to_try))) {
     base::FilePath parent = dir.DirName();
     if (parent == dir) {
       // We hit the root directory.
       return false;
     }
     dir = parent;
   }
   *out_dir = dir;
   return true;
 }
@@ skipping 56 matching lines @@
 #endif
 
   python_cmd->SetProgram(dir);
 
   // Launch python in unbuffered mode, so that python output doesn't mix with
   // gtest output in buildbot log files. See http://crbug.com/147368.
   python_cmd->AppendArg("-u");
 
   return true;
 }