Remove simple_util::GetMTime from simple cache.

net/disk_cache/simple/simple_util.cc

 // Copyright (c) 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 "net/disk_cache/simple/simple_util.h"
 
 #include <limits>
 
 #include "base/file_util.h"
 #include "base/format_macros.h"
@@ skipping 67 matching lines @@
   return data_size + key.size() + sizeof(SimpleFileHeader) +
       sizeof(SimpleFileEOF);
 }
 
 int64 GetFileOffsetFromKeyAndDataOffset(const std::string& key,
                                         int data_offset) {
   const int64 headers_size = sizeof(disk_cache::SimpleFileHeader) + key.size();
   return headers_size + data_offset;
 }
 
-// TODO(clamy, gavinp): this should go in base
-bool GetMTime(const base::FilePath& path, base::Time* out_mtime) {
-  DCHECK(out_mtime);
-  base::PlatformFileInfo file_info;
-  if (!file_util::GetFileInfo(path, &file_info))
-    return false;
-  *out_mtime = file_info.last_modified;
-  return true;
-}
-
-}  // namespace simple_backend
+}  // namespace simple_util
 
 }  // namespace disk_cache