Remove IRenderFactory from mobile platforms.

src/Android/Avalonia.Android/AndroidPlatform.cs

@@ -52,13 +52,11 @@ namespace Avalonia.Android
                 .Bind<IStandardCursorFactory>().ToTransient<CursorFactory>()
                 .Bind<IKeyboardDevice>().ToSingleton<AndroidKeyboardDevice>()
                 .Bind<IPlatformSettings>().ToConstant(Instance)
-                .Bind<IRendererFactory>().ToConstant(ImmediateRenderer.Factory)
                 .Bind<IPlatformThreadingInterface>().ToConstant(new AndroidThreadingInterface())
                 .Bind<ISystemDialogImpl>().ToTransient<SystemDialogImpl>()
                 .Bind<IWindowingPlatform>().ToConstant(Instance)
                 .Bind<IPlatformIconLoader>().ToSingleton<PlatformIconLoader>()
                 .Bind<IRenderLoop>().ToConstant(new DefaultRenderLoop(60))
-
                 .Bind<IAssetLoader>().ToConstant(new AssetLoader(app.GetType().Assembly));
 
             SkiaPlatform.Initialize();

src/Android/Avalonia.Android/Platform/SkiaPlatform/TopLevelImpl.cs

@@ -13,6 +13,7 @@ using System.Reactive.Disposables;
 using Avalonia.Android.Platform.Input;
 using Avalonia.Controls;
 using Avalonia.Controls.Platform.Surfaces;
+using Avalonia.Rendering;
 
 namespace Avalonia.Android.Platform.SkiaPlatform
 {
@@ -85,7 +86,12 @@ namespace Avalonia.Android.Platform.SkiaPlatform
         public IPlatformHandle Handle => _view;
 
         public IEnumerable<object> Surfaces => new object[] {this};
-        
+
+        public IRenderer CreateRenderer(IRenderRoot root)
+        {
+            return new ImmediateRenderer(root);
+        }
+
         public virtual void Hide()
         {
             _view.Visibility = ViewStates.Invisible;

src/iOS/Avalonia.iOS/TopLevelImpl.cs

@@ -18,6 +18,7 @@ using Avalonia.iOS.Specific;
 using ObjCRuntime;
 using Avalonia.Controls;
 using Avalonia.Controls.Platform.Surfaces;
+using Avalonia.Rendering;
 
 namespace Avalonia.iOS
 {
@@ -62,7 +63,12 @@ namespace Avalonia.iOS
         public Size ClientSize => Bounds.Size.ToAvalonia();
 
         public IMouseDevice MouseDevice => iOSPlatform.MouseDevice;
-        
+
+        public IRenderer CreateRenderer(IRenderRoot root)
+        {
+            return new ImmediateRenderer(root);
+        }
+
         public override void Draw(CGRect rect)
         {
             Paint?.Invoke(new Rect(rect.X, rect.Y, rect.Width, rect.Height));

src/iOS/Avalonia.iOS/iOSPlatform.cs

@@ -57,7 +57,6 @@ namespace Avalonia.iOS
                 //.Bind<ISystemDialogImpl>().ToTransient<SystemDialogImpl>()
                 .Bind<IStandardCursorFactory>().ToTransient<CursorFactory>()
                 .Bind<IKeyboardDevice>().ToConstant(KeyboardDevice)
-                .Bind<IRendererFactory>().ToConstant(ImmediateRenderer.Factory)
                 .Bind<IPlatformSettings>().ToSingleton<PlatformSettings>()
                 .Bind<IPlatformThreadingInterface>().ToConstant(PlatformThreadingInterface.Instance)
                 .Bind<IPlatformIconLoader>().ToSingleton<PlatformIconLoader>()