arc: Use the MIME type returned by the container to handle content URLs

chrome/browser/chromeos/arc/fileapi/arc_content_file_system_url_util.h

 // Copyright 2016 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 CHROME_BROWSER_CHROMEOS_ARC_FILEAPI_ARC_CONTENT_FILE_SYSTEM_URL_UTIL_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_FILEAPI_ARC_CONTENT_FILE_SYSTEM_URL_UTIL_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 22 matching lines @@
 GURL ArcUrlToExternalFileUrl(const GURL& arc_url);
 
 // Converts an externalfile: URL to a URL which can be used within the ARC
 // container. If the given URL cannot be converted to an ARC URL, returns an
 // empty GURL.
 GURL ExternalFileUrlToArcUrl(const GURL& external_file_url);
 
 // Converts a FileSystemURL to a URL which can be used within the ARC container.
 GURL FileSystemUrlToArcUrl(const storage::FileSystemURL& url);
 
+// Converts a path which was returned by FileSystemURL::path() (not to be
+// confused with virtual_path()) to a URL which can be used within the ARC
+// container. If the given path is not under the ARC content file system mount
+// point, returns an empty GURL.
+GURL PathToArcUrl(const base::FilePath& path);
+
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_FILEAPI_ARC_CONTENT_FILE_SYSTEM_URL_UTIL_H_