ScopedHandle is not in a namespace.

src/base/test_file_util_win.cc

 // Copyright (c) 2008 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 "base/test_file_util.h"
 
 #include <windows.h>
 
 #include <vector>
 
 #include "base/file_util.h"
+#include "base/scoped_handle.h"
 
 namespace file_util {
 
 bool EvictFileFromSystemCache(const wchar_t* file) {
   // Request exclusive access to the file and overwrite it with no buffering.
-  win_util::ScopedHandle hfile(
+  ScopedHandle hfile(
       CreateFile(file, GENERIC_READ | GENERIC_WRITE, 0, NULL,
                  OPEN_EXISTING, FILE_FLAG_NO_BUFFERING,
                  NULL));
   if (!hfile)
     return false;
 
   // Execute in chunks. It could be optimized. We want to do few of these since
   // these opterations will be slow without the cache.
   char buffer[4096];
   int total_bytes = 0;
@@ skipping 63 matching lines @@
       EvictFileFromSystemCache(cur_dest_path.c_str());
     }
   } while (FindNextFile(fh, &fd));
 
   FindClose(fh);
   return true;
 }
 
 }  // namespace file_util