Move file_util to base/files/ directory.

base/test/gtest_xml_util.cc

 // Copyright 2013 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/gtest_xml_util.h"
 
-#include "base/file_util.h"
+#include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/launcher/test_launcher.h"
 #include "third_party/libxml/chromium/libxml_utils.h"
 
 namespace base {
 
 namespace {
 
 // This is used for the xml parser to report errors. This assumes the context
@@ skipping 202 matching lines @@
         // format.
         return false;
     }
   }
 
   *crashed = (state != STATE_END);
   return true;
 }
 
 }  // namespace base