Move file_util::Delete to the base namespace

base/test/test_file_util.h

 // 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.
 
 #ifndef BASE_TEST_TEST_FILE_UTIL_H_
 #define BASE_TEST_TEST_FILE_UTIL_H_
 
 // File utility functions used only by tests.
 
 #include <string>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 
 namespace base {
 
 class FilePath;
 
 // Clear a specific file from the system cache like EvictFileFromSystemCache,
 // but on failure it will sleep and retry. On the Windows buildbots, eviction
 // can fail if the file is marked in use, and this will throw off timings that
 // rely on uncached files.
 bool EvictFileFromSystemCacheWithRetry(const FilePath& file);
 
 }  // namespace base
 
 // TODO(brettw) move all of this to the base namespace.
 namespace file_util {
 
-// Wrapper over file_util::Delete. On Windows repeatedly invokes Delete in case
+// Wrapper over base::Delete. On Windows repeatedly invokes Delete in case
 // of failure to workaround Windows file locking semantics. Returns true on
 // success.
 bool DieFileDie(const base::FilePath& file, bool recurse);
 
 // Clear a specific file from the system cache. After this call, trying
 // to access this file will result in a cold load from the hard drive.
 bool EvictFileFromSystemCache(const base::FilePath& file);
 
 #if defined(OS_WIN)
 // Returns true if the volume supports Alternate Data Streams.
@@ skipping 27 matching lines @@
   const base::FilePath path_;
   void* info_;  // The opaque stored permission information.
   size_t length_;  // The length of the stored permission information.
 
   DISALLOW_COPY_AND_ASSIGN(PermissionRestorer);
 };
 
 }  // namespace file_util
 
 #endif  // BASE_TEST_TEST_FILE_UTIL_H_