Move PathExists to base namespace.

chrome/test/mini_installer_test/installer_path_provider.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/test/mini_installer_test/installer_path_provider.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 92 matching lines @@
 
 bool InstallerPathProvider::GetDiffInstaller(base::FilePath* path) {
   std::string diff_installer_pattern("*_from_*");
   return GetInstaller(diff_installer_pattern, path);
 }
 
 bool InstallerPathProvider::GetMiniInstaller(base::FilePath* path) {
   // Use local copy of installer, else fall back to filer.
   base::FilePath mini_installer = PathFromExeDir(
       mini_installer_constants::kChromeMiniInstallerExecutable);
-  if (file_util::PathExists(mini_installer)) {
+  if (base::PathExists(mini_installer)) {
     *path = mini_installer;
     return true;
   }
   std::string mini_installer_pattern("mini_installer.exe");
   return GetInstaller(mini_installer_pattern, path);
 }
 
 bool InstallerPathProvider::GetPreviousInstaller(base::FilePath* path) {
   std::string diff_installer_pattern("*_from_*");
   std::string full_installer_pattern("*_chrome_installer*");
@@ skipping 35 matching lines @@
   std::string standalone_installer_filename = base::StringPrintf(
       "%s%s_%s.exe",
       base::FilePath(mini_installer_constants::kUntaggedInstallerPattern)
           .MaybeAsASCII().c_str(),
       tokenized_build_number[2].c_str(),
       tokenized_build_number[3].c_str());
   standalone_installer = standalone_installer.AppendASCII(current_build_)
       .Append(mini_installer_constants::kWinFolder)
       .AppendASCII(standalone_installer_filename);
   *path = standalone_installer;
-  return file_util::PathExists(standalone_installer);
+  return base::PathExists(standalone_installer);
 }
 
 bool InstallerPathProvider::GetSignedStandaloneInstaller(base::FilePath* path) {
   base::FilePath standalone_installer;
   if (!GetStandaloneInstaller(&standalone_installer))
     return false;
   base::FilePath tagged_installer = PathFromExeDir(
       mini_installer_constants::kStandaloneInstaller);
   CommandLine sign_command = CommandLine::FromString(
       base::StringPrintf(L"%ls %ls %ls %ls",
@@ skipping 49 matching lines @@
 
 std::string InstallerPathProvider::GetCurrentBuild() {
   return current_build_;
 }
 
 std::string InstallerPathProvider::GetPreviousBuild() {
   return previous_build_;
 }
 
 }  // namespace