Restructure public side of surfaces service.

mojo/services/public/interfaces/surfaces/surfaces_service.mojom

Index: mojo/services/public/interfaces/surfaces/surfaces_service.mojom
diff --git a/mojo/services/public/interfaces/surfaces/surfaces_service.mojom b/mojo/services/public/interfaces/surfaces/surfaces_service.mojom
deleted file mode 100644
index 8045d4c774cdaadf332d51d4d9e432433e75734e..0000000000000000000000000000000000000000
--- a/mojo/services/public/interfaces/surfaces/surfaces_service.mojom
+++ /dev/null
@@ -1,13 +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.
-
-module mojo;
-
-import "mojo/services/public/interfaces/surfaces/surfaces.mojom";
-
-// Use this interface to request connections to the surfaces service. Each
-// connection is associated with an id namespace
-interface SurfacesService {
-  CreateSurfaceConnection() => (Surface surface, uint32 id_namespace);
-};