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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_WEB_APPLICATIONS_CHROME_PWA_LAUNCHER_LAST_BROWSER_FILE_UTIL_H_
#define CHROME_BROWSER_WEB_APPLICATIONS_CHROME_PWA_LAUNCHER_LAST_BROWSER_FILE_UTIL_H_
#include "base/files/file_path.h"
namespace web_app {
// The name of "Last Browser" file, which stores the path of the last Chrome
// executable to use its containing User Data directory.
extern const base::FilePath::StringViewType kLastBrowserFilename;
// Reads the content of |last_browser_file|, which is assumed to contain a path,
// as a wide string, and returns it as a FilePath. Returns an empty FilePath if
// reading |last_browser_file| fails.
base::FilePath ReadChromePathFromLastBrowserFile(
const base::FilePath& last_browser_file);
// Writes the current executable path to the Last Browser file in
// |user_data_dir|. This allows Progressive Web Apps in |user_data_dir| to find
// and launch |user_data_dir|'s corresponding chrome.exe, even if it has moved
// (e.g. if a user-level install has been replaced by a system-level install),
// in which case the path will be fixed when the new chrome.exe is launched.
void WriteChromePathToLastBrowserFile(const base::FilePath& user_data_dir);
// Returns the path to the Last Browser file in |web_app_dir|'s
// great-grandparent User Data directory.
base::FilePath GetLastBrowserFileFromWebAppDir(
const base::FilePath& web_app_dir);
} // namespace web_app
#endif // CHROME_BROWSER_WEB_APPLICATIONS_CHROME_PWA_LAUNCHER_LAST_BROWSER_FILE_UTIL_H_
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