Enable use_once_callback on mojom GN rule by default

services/ui/public/interfaces/BUILD.gn

 # Copyright 2014 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/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 mojom("interfaces") {
   sources = [
     "accessibility_manager.mojom",
@@ skipping 26 matching lines @@
     "//services/ui/public/interfaces/display",
     "//services/ui/public/interfaces/ime",
     "//skia/public/interfaces",
     "//ui/base/mojo:mojo_bindings",
     "//ui/display/mojo:interfaces",
     "//ui/events/mojo:interfaces",
     "//ui/gfx/geometry/mojo",
     "//ui/gfx/mojo",
     "//ui/platform_window/mojo:interfaces",
   ]
+
+  # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
+  use_once_callback = false
 }
 
 mojom("constants") {
   sources = [
     "constants.mojom",
   ]
 }
 
 test("ui_struct_traits_unittests") {
   testonly = true
 
   sources = [
     "cursor/cursor_struct_traits_unittest.cc",
     "ime/ime_struct_traits_unittest.cc",
   ]
 
   deps = [
     "//base",
     "//base/test:test_support",
     "//mojo/edk/test:run_all_unittests",
     "//services/ui/public/interfaces/cursor",
     "//services/ui/public/interfaces/ime:test_interfaces",
     "//skia/public/interfaces",
     "//testing/gtest",
     "//ui/display/types",
     "//ui/gfx:test_support",
   ]
 }