pass WorldRenderer to Widget.Draw, DrawInner

OpenRA.Game/Widgets/ButtonWidget.cs

@@ -10,6 +10,7 @@
 
 using System;
 using System.Drawing;
+using OpenRA.Graphics;
 
 namespace OpenRA.Widgets
 {
@@ -53,7 +54,7 @@ namespace OpenRA.Widgets
 				var wasPressed = Depressed;
 				return (LoseFocus(mi) && wasPressed);
 			}
-
+
 			if (mi.Event == MouseInputEvent.Down)
 				Depressed = true;
 			else if (mi.Event == MouseInputEvent.Move && Focused)
@@ -62,7 +63,7 @@ namespace OpenRA.Widgets
 			return Depressed;
 		}
 
-		public override void DrawInner()
+		public override void DrawInner( WorldRenderer wr )
 		{
 			var font = (Bold) ? Game.Renderer.BoldFont : Game.Renderer.RegularFont;
 			var stateOffset = (Depressed) ? new int2(VisualHeight, VisualHeight) : new int2(0, 0);