Update the child process security policy to use explicit permission grants.

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

 // Copyright (c) 2012 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_EXTENSIONS_FILE_MANAGER_FILE_HANDLER_UTIL_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_FILE_HANDLER_UTIL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 35 matching lines @@
                        const std::set<std::string>& mime_types);
 
 // Returns the task ID of the default task for the given |mime_type|/|suffix|
 // combination. If it finds a MIME type match, then it prefers that over a
 // suffix match. If it a default can't be found, then it returns the empty
 // string.
 std::string GetDefaultTaskIdFromPrefs(Profile* profile,
                                       const std::string& mime_type,
                                       const std::string& suffix);
 
-// Gets read-write file access permission flags.
-int GetReadWritePermissions();
-// Gets read-only file access permission flags.
-int GetReadOnlyPermissions();
-
 // Generates task id for the action specified by the extension. The |task_type|
 // must be one of kTaskFile, kTaskDrive or kTaskApp.
 std::string MakeTaskID(const std::string& extension_id,
                        const std::string& task_type,
                        const std::string& action_id);
 
 // Extracts action, type and extension id bound to the file task. Either
 // |target_extension_id| or |action_id| are allowed to be NULL if caller isn't
 // interested in those values.  Returns false on failure to parse.
 bool CrackTaskID(const std::string& task_id,
@@ skipping 35 matching lines @@
                      int32 tab_id,
                      const std::string& extension_id,
                      const std::string& task_type,
                      const std::string& action_id,
                      const std::vector<fileapi::FileSystemURL>& file_urls,
                      const FileTaskFinishedCallback& done);
 
 }  // namespace file_handler_util
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_FILE_HANDLER_UTIL_H_