Filter out webidl files based on special comments, and feature-gate webxr interfaces. (#34348)

* Filter out webidl files based on skip-if directives.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* script: Don't build XR functionality without webxr feature.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Fix tidy.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* script: Adjust imports for file movement.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Fix clippy.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Formatting.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Clean up webxr module import.

Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>
Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>

components/script/dom/webxr/xrlayerevent.rs

@@ -0,0 +1,77 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use dom_struct::dom_struct;
+use js::rust::HandleObject;
+use servo_atoms::Atom;
+
+use crate::dom::bindings::codegen::Bindings::EventBinding::Event_Binding::EventMethods;
+use crate::dom::bindings::codegen::Bindings::XRLayerEventBinding::{
+    XRLayerEventInit, XRLayerEventMethods,
+};
+use crate::dom::bindings::reflector::reflect_dom_object_with_proto;
+use crate::dom::bindings::root::{Dom, DomRoot};
+use crate::dom::bindings::str::DOMString;
+use crate::dom::event::Event;
+use crate::dom::window::Window;
+use crate::dom::xrlayer::XRLayer;
+use crate::script_runtime::CanGc;
+
+// https://w3c.github.io/uievents/#interface-uievent
+#[dom_struct]
+pub struct XRLayerEvent {
+    event: Event,
+    layer: Dom<XRLayer>,
+}
+
+impl XRLayerEvent {
+    pub fn new_inherited(layer: &XRLayer) -> XRLayerEvent {
+        XRLayerEvent {
+            event: Event::new_inherited(),
+            layer: Dom::from_ref(layer),
+        }
+    }
+
+    fn new(
+        window: &Window,
+        proto: Option<HandleObject>,
+        layer: &XRLayer,
+        can_gc: CanGc,
+    ) -> DomRoot<XRLayerEvent> {
+        reflect_dom_object_with_proto(
+            Box::new(XRLayerEvent::new_inherited(layer)),
+            window,
+            proto,
+            can_gc,
+        )
+    }
+}
+
+impl XRLayerEventMethods<crate::DomTypeHolder> for XRLayerEvent {
+    // https://immersive-web.github.io/layers/#dom-xrlayerevent-xrlayerevent
+    fn Constructor(
+        window: &Window,
+        proto: Option<HandleObject>,
+        can_gc: CanGc,
+        type_: DOMString,
+        init: &XRLayerEventInit,
+    ) -> DomRoot<XRLayerEvent> {
+        let event = XRLayerEvent::new(window, proto, &init.layer, can_gc);
+        let type_ = Atom::from(type_);
+        let bubbles = init.parent.bubbles;
+        let cancelable = init.parent.cancelable;
+        event.event.init_event(type_, bubbles, cancelable);
+        event
+    }
+
+    // https://immersive-web.github.io/layers/#dom-xrlayerevent-layer
+    fn Layer(&self) -> DomRoot<XRLayer> {
+        DomRoot::from_ref(&self.layer)
+    }
+
+    // https://dom.spec.whatwg.org/#dom-event-istrusted
+    fn IsTrusted(&self) -> bool {
+        self.event.IsTrusted()
+    }
+}