Cleanup file permission check code in FileAPIMessageFilter

webkit/fileapi/file_permission_policy.h

+// Copyright (c) 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.
+
+#ifndef WEBKIT_FILEAPI_FILE_PERMISSION_POLICY_H_
+#define WEBKIT_FILEAPI_FILE_PERMISSION_POLICY_H_
+
+#include "webkit/storage/webkit_storage_export.h"
+
+namespace fileapi {
+
+WEBKIT_STORAGE_EXPORT extern const int kReadFilePermissions;
+WEBKIT_STORAGE_EXPORT extern const int kWriteFilePermissions;
+WEBKIT_STORAGE_EXPORT extern const int kCreateFilePermissions;
+WEBKIT_STORAGE_EXPORT extern const int kOpenFilePermissions;
+
+enum FilePermissionPolicy {
+  // Any access should be always denied.
+  FILE_PERMISSION_ALWAYS_DENY,
+
+  // Any access should be always allowed. (This should be used only for
+  // access to sandbox directories.)
+  FILE_PERMISSION_ALWAYS_ALLOW,
+
+  // Access should be examined by per-file permission policy.
+  FILE_PERMISSION_USE_FILE_PERMISSION,
+
+  // Access should be examined by per-filesystem permission policy.
+  FILE_PERMISSION_USE_FILESYSTEM_PERMISSION,
+};
+
+}  // namespace fileapi
+
+#endif  // WEBKIT_FILEAPI_FILE_PERMISSION_POLICY_H_