Make SkipButton an OverlayContainer to use the menu cursor

osu.Game/Screens/Play/SkipButton.cs

@@ -21,7 +21,7 @@
 
 namespace osu.Game.Screens.Play
 {
-    public class SkipButton : Container, IKeyBindingHandler<GlobalAction>
+    public class SkipButton : OverlayContainer, IKeyBindingHandler<GlobalAction>
     {
         private readonly double startTime;
         public IAdjustableClock AudioClock;
@@ -36,6 +36,8 @@ public SkipButton(double startTime)
         {
             this.startTime = startTime;
 
+            State = Visibility.Visible;
+
             RelativePositionAxes = Axes.Both;
             RelativeSizeAxes = Axes.Both;
 
@@ -112,6 +114,16 @@ protected override void LoadComplete()
             Expire();
         }
 
+        protected override void PopIn()
+        {
+            this.FadeIn();
+        }
+
+        protected override void PopOut()
+        {
+            this.FadeOut();
+        }
+
         protected override void Update()
         {
             base.Update();