Move the rest of test_file_util to base namespace.

chrome/browser/download/download_path_reservation_tracker_unittest.cc

Index: chrome/browser/download/download_path_reservation_tracker_unittest.cc
diff --git a/chrome/browser/download/download_path_reservation_tracker_unittest.cc b/chrome/browser/download/download_path_reservation_tracker_unittest.cc
index 8bb301d54ae72ca8ea6b16329e7434291e7e91bc..45db85a0ed1c67d2987721d97e2b51ea6af42cf8 100644
--- a/chrome/browser/download/download_path_reservation_tracker_unittest.cc
+++ b/chrome/browser/download/download_path_reservation_tracker_unittest.cc
@@ -446,9 +446,9 @@ TEST_F(DownloadPathReservationTrackerTest, UnwriteableDirectory) {
   ASSERT_FALSE(IsPathInUse(path));
 
   {
-    // Scope for PermissionRestorer
-    file_util::PermissionRestorer restorer(dir);
-    EXPECT_TRUE(file_util::MakeFileUnwritable(dir));
+    // Scope for FilePermissionRestorer
+    base::FilePermissionRestorer restorer(dir);
+    EXPECT_TRUE(base::MakeFileUnwritable(dir));
     base::FilePath reserved_path;
     bool verified = true;
     DownloadPathReservationTracker::FilenameConflictAction conflict_action =