Added first-cut implementation of XR layers

components/script/dom/xrmediabinding.rs

@@ -0,0 +1,35 @@
+/* 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 crate::dom::bindings::reflector::reflect_dom_object;
+use crate::dom::bindings::reflector::Reflector;
+use crate::dom::bindings::root::Dom;
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::window::Window;
+use crate::dom::xrsession::XRSession;
+use dom_struct::dom_struct;
+
+#[dom_struct]
+pub struct XRMediaBinding {
+    reflector: Reflector,
+    session: Dom<XRSession>,
+}
+
+impl XRMediaBinding {
+    pub fn new_inherited(session: &XRSession) -> XRMediaBinding {
+        XRMediaBinding {
+            reflector: Reflector::new(),
+            session: Dom::from_ref(session),
+        }
+    }
+
+    pub fn new(global: &Window, session: &XRSession) -> DomRoot<XRMediaBinding> {
+        reflect_dom_object(Box::new(XRMediaBinding::new_inherited(session)), global)
+    }
+
+    #[allow(non_snake_case)]
+    pub fn Constructor(global: &Window, session: &XRSession) -> DomRoot<XRMediaBinding> {
+        XRMediaBinding::new(global, session)
+    }
+}