Moves mash/wm/public -> ash/public

mash/wm/public/interfaces/BUILD.gn

Index: mash/wm/public/interfaces/BUILD.gn
diff --git a/mash/wm/public/interfaces/BUILD.gn b/mash/wm/public/interfaces/BUILD.gn
deleted file mode 100644
index 2c60c4caef2da61fc074aef8b606a7e44b27b599..0000000000000000000000000000000000000000
--- a/mash/wm/public/interfaces/BUILD.gn
+++ /dev/null
@@ -1,18 +0,0 @@
-# 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/public/tools/bindings/mojom.gni")
-
-mojom("interfaces") {
-  sources = [
-    "ash_window_type.mojom",
-    "container.mojom",
-    "shelf_layout.mojom",
-    "user_window_controller.mojom",
-  ]
-
-  public_deps = [
-    "//mash/shelf/public/interfaces",
-  ]
-}