Fork the mojo shell interfaces used by Mandoline.

third_party/mojo/src/mojo/public/interfaces/application/BUILD.gn

Index: third_party/mojo/src/mojo/public/interfaces/application/BUILD.gn
diff --git a/third_party/mojo/src/mojo/public/interfaces/application/BUILD.gn b/third_party/mojo/src/mojo/public/interfaces/application/BUILD.gn
deleted file mode 100644
index 463df5580ea631d550faa85ade3fbf914a6b8797..0000000000000000000000000000000000000000
--- a/third_party/mojo/src/mojo/public/interfaces/application/BUILD.gn
+++ /dev/null
@@ -1,14 +0,0 @@
-# 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("../../tools/bindings/mojom.gni")
-
-# GYP version: mojo/public/mojo_public.gyp:mojo_application_bindings
-mojom("application") {
-  sources = [
-    "application.mojom",
-    "service_provider.mojom",
-    "shell.mojom",
-  ]
-}