Move NativeViewport service into view_manager. This is a file move only. Further merging will happe…

components/view_manager/public/interfaces/native_viewport.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 "components/gpu/public/interfaces/context_provider.mojom";
 import "ui/mojo/geometry/geometry.mojom";
 import "ui/mojo/events/input_events.mojom";
 
@@ skipping 22 matching lines @@
   // method. Call RequestMetrics() to receive updates when the viewport metrics
   // change. The reply will be sent when the viewport metrics are different from
   // the values last sent, so to receive continuous updates call this method
   // again after receiving the callback.
   RequestMetrics() => (ViewportMetrics metrics);
 };
 
 interface NativeViewportEventDispatcher {
   OnEvent(Event event) => ();
 };