Revert of Mandoline: Remove native_viewport.mojom

components/view_manager/public/interfaces/view_manager.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/view_manager/public/interfaces/surface_id.mojom";
+import "components/view_manager/public/interfaces/native_viewport.mojom";
 import "components/view_manager/public/interfaces/view_manager_constants.mojom";
 import "mojo/application/public/interfaces/service_provider.mojom";
 import "network/public/interfaces/url_loader.mojom";
 import "ui/mojo/events/input_events.mojom";
 import "ui/mojo/geometry/geometry.mojom";
 
-struct ViewportMetrics {
-  Size size_in_pixels;
-  // A value of 0 indicates the real value is not yet available.
-  float device_pixel_ratio = 0.0;
-};
-
 struct ViewData {
   uint32 parent_id;
   uint32 view_id;
   mojo.Rect bounds;
   map<string, array<uint8>> properties;
   // True if this view is visible. The view may not be drawn on screen (see
   // drawn for specifics).
   bool visible;
   // True if this view is drawn on screen. A view is drawn if attached to the
   // root and all ancestors (including this view) are visible.
@@ skipping 216 matching lines @@
 
   // Invoked when a view property is changed. If this change is a removal,
   // |new_data| is null.
   OnViewSharedPropertyChanged(uint32 view, string name, array<uint8>? new_data);
 
   // Invoked when an event is targeted at the specified view.
   OnViewInputEvent(uint32 view, mojo.Event event) => ();
 
   OnViewFocused(uint32 focused_view_id);
 };