chromium/third_party/blink/renderer/modules/xr/xr_viewport.idl

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// https://immersive-web.github.io/webxr/#xrviewport-interface
[
    SecureContext,
    Exposed=Window,
    RuntimeEnabled=WebXR
] interface XRViewport {
  readonly attribute long x;
  readonly attribute long y;
  readonly attribute long width;
  readonly attribute long height;
};