Move services/files/*.mojom -> mojo/services/files/public/interfaces/.

mojo/services/files/public/interfaces/BUILD.gn

 # 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.
 
-import("../../../mojo_sdk_root.gni")
+import("//build/module_args/mojo.gni")
 import("$mojo_sdk_root/mojo/public/tools/bindings/mojom.gni")
 
 mojom("interfaces") {
   sources = [
-    "service_registry.mojom",
+    "directory.mojom",
+    "file.mojom",
+    "files.mojom",
+    "types.mojom",
   ]
 
   import_dirs = [ get_path_info("../../../", "abspath") ]
-
-  mojo_sdk_deps = [ "mojo/public/interfaces/application" ]
 }