Re-namespace collections dropdown

osu.Game/Collections/CollectionFilterDropdown.cs

@@ -12,13 +12,12 @@
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
 using osu.Game.Beatmaps;
-using osu.Game.Collections;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.UserInterface;
 using osuTK;
 
-namespace osu.Game.Screens.Select
+namespace osu.Game.Collections
 {
     /// <summary>
     /// A dropdown to select the <see cref="CollectionMenuItem"/> to filter beatmaps using.
@@ -152,7 +151,7 @@ private void updateBindable()
             private void updateText() => base.Label = collectionName.Value;
         }
 
-        private class CollectionDropdownMenu : OsuDropdownMenu
+        protected class CollectionDropdownMenu : OsuDropdownMenu
         {
             public CollectionDropdownMenu()
             {
@@ -162,7 +161,7 @@ public CollectionDropdownMenu()
             protected override DrawableDropdownMenuItem CreateDrawableDropdownMenuItem(MenuItem item) => new CollectionDropdownMenuItem(item);
         }
 
-        private class CollectionDropdownMenuItem : OsuDropdownMenu.DrawableOsuDropdownMenuItem
+        protected class CollectionDropdownMenuItem : OsuDropdownMenu.DrawableOsuDropdownMenuItem
         {
             [NotNull]
             protected new CollectionMenuItem Item => ((DropdownMenuItem<CollectionMenuItem>)base.Item).Value;

osu.Game/Collections/CollectionMenuItem.cs

@@ -3,9 +3,8 @@
 
 using JetBrains.Annotations;
 using osu.Framework.Bindables;
-using osu.Game.Collections;
 
-namespace osu.Game.Screens.Select
+namespace osu.Game.Collections
 {
     /// <summary>
     /// A <see cref="BeatmapCollection"/> filter.

osu.Game/Screens/Select/FilterControl.cs

@@ -8,6 +8,7 @@
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
+using osu.Game.Collections;
 using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;