Fix AudioTrackList signatures

Author: armanbilge

api-reports/2_12.txt

@@ -321,9 +321,9 @@ AudioTrackList[JT] @JSBracketAccess def apply(index: Int): T
 AudioTrackList[JT] def dispatchEvent(evt: Event): Boolean
 AudioTrackList[JT] def getTrackById(id: String): AudioTrack
 AudioTrackList[JT] def length: Int
-AudioTrackList[JT] var onaddtrack: js.Function1[Event, Any]
+AudioTrackList[JT] var onaddtrack: js.Function1[TrackEvent, Any]
 AudioTrackList[JT] var onchange: js.Function1[Event, Any]
-AudioTrackList[JT] var onremovetrack: js.Function1[Event, Any]
+AudioTrackList[JT] var onremovetrack: js.Function1[TrackEvent, Any]
 AudioTrackList[JT] def removeEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 AudioTrackList[JT] def removeEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
 BeforeUnloadEvent[JC] def bubbles: Boolean

api-reports/2_13.txt

@@ -321,9 +321,9 @@ AudioTrackList[JT] @JSBracketAccess def apply(index: Int): T
 AudioTrackList[JT] def dispatchEvent(evt: Event): Boolean
 AudioTrackList[JT] def getTrackById(id: String): AudioTrack
 AudioTrackList[JT] def length: Int
-AudioTrackList[JT] var onaddtrack: js.Function1[Event, Any]
+AudioTrackList[JT] var onaddtrack: js.Function1[TrackEvent, Any]
 AudioTrackList[JT] var onchange: js.Function1[Event, Any]
-AudioTrackList[JT] var onremovetrack: js.Function1[Event, Any]
+AudioTrackList[JT] var onremovetrack: js.Function1[TrackEvent, Any]
 AudioTrackList[JT] def removeEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], options: EventListenerOptions): Unit
 AudioTrackList[JT] def removeEventListener[T <: Event](`type`: String, listener: js.Function1[T, _], useCapture: Boolean?): Unit
 BeforeUnloadEvent[JC] def bubbles: Boolean

src/main/scala/org/scalajs/dom/AudioTrackList.scala

@@ -12,8 +12,8 @@ import scala.scalajs.js
 trait AudioTrackList extends EventTarget with DOMList[AudioTrack] {
 
   var onchange: js.Function1[Event, Any] = js.native
-  var onaddtrack: js.Function1[Event, Any] = js.native
-  var onremovetrack: js.Function1[Event, Any] = js.native
+  var onaddtrack: js.Function1[TrackEvent, Any] = js.native
+  var onremovetrack: js.Function1[TrackEvent, Any] = js.native
 
   def getTrackById(id: String): AudioTrack = js.native
 }