Restructure public side of geometry service.

mojo/services/public/interfaces/gpu/gpu.mojom

 // 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/geometry/geometry.mojom";
+import "mojo/services/geometry/public/interfaces/geometry.mojom";
 import "mojo/services/public/interfaces/gpu/command_buffer.mojom";
 import "mojo/services/public/interfaces/gpu/viewport_parameter_listener.mojom";
 
 interface Gpu {
   CreateOnscreenGLES2Context(uint64 native_viewport_id,
                              Size? size,
                              CommandBuffer&? gles2_client,
                              ViewportParameterListener? listener);
   CreateOffscreenGLES2Context(CommandBuffer&? gles2_client);
 };