Move temp file functions to base namespace.

chrome/installer/test/upgrade_test.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.
 
 // Boilerplate for an upgrade scenario test.  The mini_installer.exe residing in
 // the same directory as the host executable is re-versioned.
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "chrome/installer/test/alternate_version_generator.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
   const wchar_t kMiniInstallerExe[] = L"mini_installer.exe";
 }  // namespace
 
 // Boilerplate for a future upgrade scenario test.
 class UpgradeTest : public testing::Test {
  public:
   // Generate a newer version of mini_installer.exe.
   static void SetUpTestCase() {
     base::FilePath dir_exe;
     ASSERT_TRUE(PathService::Get(base::DIR_EXE, &dir_exe));
-    ASSERT_TRUE(file_util::CreateTemporaryFile(&next_mini_installer_path_));
+    ASSERT_TRUE(base::CreateTemporaryFile(&next_mini_installer_path_));
     ASSERT_TRUE(
         upgrade_test::GenerateAlternateVersion(
             dir_exe.Append(&kMiniInstallerExe[0]),
             next_mini_installer_path_,
             upgrade_test::NEXT_VERSION, NULL, NULL));
   }
 
   // Clean up by deleting the created newer version of mini_installer.exe.
   static void TearDownTestCase() {
     EXPECT_TRUE(base::DeleteFile(next_mini_installer_path_, false));
   }
  private:
   static base::FilePath next_mini_installer_path_;
 };  // class UpgradeTest
 
 base::FilePath UpgradeTest::next_mini_installer_path_;
 
 TEST_F(UpgradeTest, DoNothing) {
 }