Android fastrenderers (#845)

* Obsolete IVisualElementRenderer.ViewGroup in favor of .View

* Fix NRE

* Changing TContainer in PlatformEffect to View

* Fix "View" type

* new VisualElementRenderer

* First attempt at a fast(er) button renderer

* Fast Label Renderer

* Let's try that again. Behold: Label Fast Renderer

* Move FrameRenderer into Fast Renderers

* Fix Disposable on VisualElementRenderer

* Simplify touch and click handlers

* Drop empty if clause

* [Android] Add initial Image fast renderer

* Split accessibility out to a separate helper class; fix tapgesture bug with label

* [Android] Small fixes to VisualElementRenderer

* Move accessiblity stuff to a separate class (which needs a good name)

* Prevent query from looking to parent for fast renderers

* [Android] ImageRenderer refactoring

* Fix elevation/z-index bugs with Button (e.g., 40173)

* Move SetLabeledBy to Accessibilitizer

* Un-break automation IDs for Labels

* Move gesture handling to its own class

* Split gesture and effect management into separate classes

* Remove unneeded packager from LabelRenderer

* LabelRenderer inherits from FormsTextView

* Batch updates to View

* Fix isOnParentRenderer check for non-Android platforms

* [Controls] Update Xamarin.Forms.ControlGallery.iOS.csproj

* [Android,IOS] Small fixes to rebase and use of Internals

* [Android] Ignroe warning for now

* Fast renderers now passing InputTransparent and IsEnabled tests

* Fast and legacy renderers now pass the Enabled and InputTransparent tests

* Change PlatformEffect back, default container to null

* Fix mangled using directives

1 files changed, 8 insertions, 38 deletions

diff --git a/Xamarin.Forms.ControlGallery.Android/Activity1.cs b/Xamarin.Forms.ControlGallery.Android/Activity1.cs
index b0491b0f..320c6e37 100644
--- a/Xamarin.Forms.ControlGallery.Android/Activity1.cs
+++ b/Xamarin.Forms.ControlGallery.Android/Activity1.cs
@@ -1,28 +1,20 @@
 using System;
-using System.ComponentModel;
 using System.Diagnostics;
-using System.Reflection;
-
+using System.Globalization;
+using System.IO;
+using System.IO.IsolatedStorage;
 using Android.App;
-using Android.Content;
 using Android.Content.PM;
-using Android.Runtime;
-using Android.Views;
-using Android.Widget;
 using Android.OS;
+using Android.Widget;
+using Java.Interop;
 using Xamarin.Forms;
 using Xamarin.Forms.ControlGallery.Android;
 using Xamarin.Forms.Controls;
-using Xamarin.Forms.Maps.Android;
+using Xamarin.Forms.Controls.Issues;
 using Xamarin.Forms.Platform.Android;
 using Xamarin.Forms.Platform.Android.AppLinks;
-using System.IO;
-using System.IO.IsolatedStorage;
-
-using Droid = Android;
-using System.Globalization;
-using Java.Interop;
-using Xamarin.Forms.Controls.Issues;
+using Android.Content;
 
 [assembly: Dependency (typeof (CacheService))]
 [assembly: Dependency (typeof (TestCloudService))]
@@ -34,29 +26,7 @@ using Xamarin.Forms.Controls.Issues;
 
 namespace Xamarin.Forms.ControlGallery.Android
 {
-	public class BorderEffect : PlatformEffect
-	{
-		protected override void OnAttached ()
-		{
-			Control.SetBackgroundColor (global::Android.Graphics.Color.Aqua);
-
-			var childLabel = (Element as ScrollView)?.Content as Label;
-			if (childLabel != null)
-				childLabel.Text = "Success";
-		}
-
-		protected override void OnDetached ()
-		{
-			Control.SetBackgroundColor(global::Android.Graphics.Color.Beige);
-		}
-
-		protected override void OnElementPropertyChanged (PropertyChangedEventArgs args)
-		{
-			base.OnElementPropertyChanged (args);
-		}
-	}
-
-	public class CacheService : ICacheService
+    public class CacheService : ICacheService
 	{
 		public void ClearImageCache ()
 		{