script: Move webaudio DOM interfaces to script/dom/audio/ (#38894)

Moves interfaces defined by the webaudio spec (27 files) to the new
`script/dom/audio/` module from the `script/dom/` module.

Testing: Just a refactor shouldn't need any testing
Fixes: N/A

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

components/script/dom/audio/offlineaudiocompletionevent.rs

@@ -0,0 +1,106 @@
+/* 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 stylo_atoms::Atom;
+
+use crate::dom::audio::audiobuffer::AudioBuffer;
+use crate::dom::bindings::codegen::Bindings::EventBinding::EventMethods;
+use crate::dom::bindings::codegen::Bindings::OfflineAudioCompletionEventBinding::{
+    OfflineAudioCompletionEventInit, OfflineAudioCompletionEventMethods,
+};
+use crate::dom::bindings::error::Fallible;
+use crate::dom::bindings::inheritance::Castable;
+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, EventBubbles, EventCancelable};
+use crate::dom::window::Window;
+use crate::script_runtime::CanGc;
+
+#[dom_struct]
+pub(crate) struct OfflineAudioCompletionEvent {
+    event: Event,
+    rendered_buffer: Dom<AudioBuffer>,
+}
+
+impl OfflineAudioCompletionEvent {
+    pub(crate) fn new_inherited(rendered_buffer: &AudioBuffer) -> OfflineAudioCompletionEvent {
+        OfflineAudioCompletionEvent {
+            event: Event::new_inherited(),
+            rendered_buffer: Dom::from_ref(rendered_buffer),
+        }
+    }
+
+    pub(crate) fn new(
+        window: &Window,
+        type_: Atom,
+        bubbles: EventBubbles,
+        cancelable: EventCancelable,
+        rendered_buffer: &AudioBuffer,
+        can_gc: CanGc,
+    ) -> DomRoot<OfflineAudioCompletionEvent> {
+        Self::new_with_proto(
+            window,
+            None,
+            type_,
+            bubbles,
+            cancelable,
+            rendered_buffer,
+            can_gc,
+        )
+    }
+
+    fn new_with_proto(
+        window: &Window,
+        proto: Option<HandleObject>,
+        type_: Atom,
+        bubbles: EventBubbles,
+        cancelable: EventCancelable,
+        rendered_buffer: &AudioBuffer,
+        can_gc: CanGc,
+    ) -> DomRoot<OfflineAudioCompletionEvent> {
+        let event = Box::new(OfflineAudioCompletionEvent::new_inherited(rendered_buffer));
+        let ev = reflect_dom_object_with_proto(event, window, proto, can_gc);
+        {
+            let event = ev.upcast::<Event>();
+            event.init_event(type_, bool::from(bubbles), bool::from(cancelable));
+        }
+        ev
+    }
+}
+
+impl OfflineAudioCompletionEventMethods<crate::DomTypeHolder> for OfflineAudioCompletionEvent {
+    // https://webaudio.github.io/web-audio-api/#dom-offlineaudiocompletionevent-offlineaudiocompletionevent
+    fn Constructor(
+        window: &Window,
+        proto: Option<HandleObject>,
+        can_gc: CanGc,
+        type_: DOMString,
+        init: &OfflineAudioCompletionEventInit,
+    ) -> Fallible<DomRoot<OfflineAudioCompletionEvent>> {
+        let bubbles = EventBubbles::from(init.parent.bubbles);
+        let cancelable = EventCancelable::from(init.parent.cancelable);
+        Ok(OfflineAudioCompletionEvent::new_with_proto(
+            window,
+            proto,
+            Atom::from(type_),
+            bubbles,
+            cancelable,
+            &init.renderedBuffer,
+            can_gc,
+        ))
+    }
+
+    // https://webaudio.github.io/web-audio-api/#dom-offlineaudiocompletionevent-renderedbuffer
+    fn RenderedBuffer(&self) -> DomRoot<AudioBuffer> {
+        DomRoot::from_ref(&*self.rendered_buffer)
+    }
+
+    // https://dom.spec.whatwg.org/#dom-event-istrusted
+    fn IsTrusted(&self) -> bool {
+        self.event.IsTrusted()
+    }
+}