Prototype of Files service.

services/file_manager/file_manager.mojom

Index: services/file_manager/file_manager.mojom
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+// Copyright 2015 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.
+
+module mojo.files;
+
+import "services/file_manager/directory.mojom";
+import "services/file_manager/types.mojom";
+
+enum FileSystem {
+  TEMPORARY,
+  USER,
+};
+
+interface FileManager {
+  OpenFileSystem(FileSystem file_system, Directory& directory) => (Error error);
+};