Restructure public side of gpu service.

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

Index: mojo/services/public/interfaces/gpu/BUILD.gn
diff --git a/mojo/services/public/interfaces/gpu/BUILD.gn b/mojo/services/public/interfaces/gpu/BUILD.gn
deleted file mode 100644
index 39aa4f10f295deb020d033a0ec1b40a13211e5e3..0000000000000000000000000000000000000000
--- a/mojo/services/public/interfaces/gpu/BUILD.gn
+++ /dev/null
@@ -1,18 +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("//mojo/public/tools/bindings/mojom.gni")
-
-mojom("gpu") {
-  sources = [
-    "command_buffer.mojom",
-    "gpu.mojom",
-    "gpu_capabilities.mojom",
-    "viewport_parameter_listener.mojom",
-  ]
-
-  deps = [
-    "//mojo/services/geometry/public/interfaces",
-  ]
-}