Move the rest of test_file_util to base namespace.

chrome/browser/download/download_browsertest.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 <sstream>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 1023 matching lines @@
   // Attempts to download a file to a read-only folder, based on information
   // in |download_info|.
   void DownloadFilesToReadonlyFolder(size_t count,
                                      DownloadInfo* download_info) {
     DownloadFilesCheckErrorsSetup();
 
     // Make the test folder unwritable.
     base::FilePath destination_folder = GetDownloadDirectory(browser());
     DVLOG(1) << " " << __FUNCTION__ << "()"
              << " folder = '" << destination_folder.value() << "'";
-    file_util::PermissionRestorer permission_restorer(destination_folder);
-    EXPECT_TRUE(file_util::MakeFileUnwritable(destination_folder));
+    base::FilePermissionRestorer permission_restorer(destination_folder);
+    EXPECT_TRUE(base::MakeFileUnwritable(destination_folder));
 
     for (size_t i = 0; i < count; ++i) {
       DownloadFilesCheckErrorsLoopBody(download_info[i], i);
     }
   }
 
   // A mock install prompt that simulates the user allowing an install request.
   void SetAllowMockInstallPrompt() {
     download_crx_util::SetMockInstallPromptForTesting(
         scoped_ptr<ExtensionInstallPrompt>(
@@ skipping 2335 matching lines @@
       *(downloads[0])));
 
   // Begin feedback and check that the file is "stolen".
   download_protection_service->feedback_service()->BeginFeedbackForDownload(
       downloads[0]);
   std::vector<DownloadItem*> updated_downloads;
   GetDownloads(browser(), &updated_downloads);
   ASSERT_TRUE(updated_downloads.empty());
 }
 #endif