Move base to DEPS

base/nix/mime_util_xdg.h

-// Copyright (c) 2011 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_NIX_MIME_UTIL_XDG_H_
-#define BASE_NIX_MIME_UTIL_XDG_H_
-
-#include <string>
-
-#include "base/base_export.h"
-#include "build/build_config.h"
-
-namespace base {
-
-class FilePath;
-
-namespace nix {
-
-// Gets the mime type for a file based on its filename. The file path does not
-// have to exist. Please note because it doesn't touch the disk, this does not
-// work for directories.
-// If the mime type is unknown, this will return application/octet-stream.
-BASE_EXPORT std::string GetFileMimeType(const FilePath& filepath);
-
-// Get the mime type for a byte vector.
-BASE_EXPORT std::string GetDataMimeType(const std::string& data);
-
-}  // namespace nix
-}  // namespace base
-
-#endif  // BASE_NIX_MIME_UTIL_XDG_H_