file_manager: Move non-binding code to c/b/chromeos/file_manager

chrome/browser/chromeos/extensions/file_manager/mime_util.h

-// 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.
-//
-// This file provides MIME related utilities.
-
-#ifndef CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_MIME_UTIL_H_
-#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_MIME_UTIL_H_
-
-#include <string>
-
-#include "chrome/browser/extensions/api/file_handlers/app_file_handler_util.h"
-#include "url/gurl.h"
-
-namespace base {
-class FilePath;
-}
-
-namespace file_manager {
-namespace util {
-
-// Returns the MIME type of |file_path|. Returns "" if the MIME type is
-// unknown.
-std::string GetMimeTypeForPath(const base::FilePath& file_path);
-
-}  // namespace util
-}  // namespace file_manager
-
-#endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_MIME_UTIL_H_