[Mono.Android] Fix WindowManagerLayoutParams.SystemUiVisibility enumification.

Author: jpobst

src/Mono.Android/Android.Telecom/InCallService.cs

@@ -6,7 +6,7 @@ namespace Android.Telecom
 	public abstract partial class InCallService : Android.App.Service
 	{
 #if ANDROID_23
-		[Obsolete ("Incorrect enum parameter, use the overload that takes a CallAudioRoute paramter instead.")]
+		[Obsolete ("Incorrect enum parameter, use the overload that takes a CallAudioRoute parameter instead.")]
 		[global::System.Runtime.Versioning.SupportedOSPlatformAttribute ("android23.0")]
 		public void SetAudioRoute ([global::Android.Runtime.GeneratedEnum] Android.Telecom.VideoQuality route)
 		{

src/Mono.Android/Android.Views/WindowManagerLayoutParams.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace Android.Views
+{
+	partial class WindowManagerLayoutParams
+	{
+#if NET
+		[global::System.Runtime.Versioning.ObsoletedOSPlatform ("android30.0", "These flags are deprecated. Use WindowInsetsController instead.")]
+		public SystemUiFlags SystemUiFlags {
+			get => (SystemUiFlags) SystemUiVisibility;
+			set => SystemUiVisibility = (Android.Views.StatusBarVisibility) value;
+		}
+#endif
+	}
+}

src/Mono.Android/Mono.Android.csproj

@@ -127,6 +127,7 @@
     <Compile Include="Android.Runtime\DynamicMethodNameCounter.cs" />
     <Compile Include="Android.Runtime\IJavaObjectValueMarshaler.cs" />
     <Compile Include="Android.Telecom\InCallService.cs" />
+    <Compile Include="Android.Views\WindowManagerLayoutParams.cs" />
   </ItemGroup>
 
   <Import Project="..\Xamarin.Android.NamingCustomAttributes\Xamarin.Android.NamingCustomAttributes.projitems" Label="Shared" Condition="Exists('..\Xamarin.Android.NamingCustomAttributes\Xamarin.Android.NamingCustomAttributes.projitems')" />

src/Mono.Android/metadata

@@ -1715,6 +1715,9 @@
   <remove-node api-since="33" path="/api/package[@name='java.util.concurrent']/class[@name='TimeUnit']/method[@name='of' and count(parameter)=1 and parameter[1][@type='java.time.temporal.ChronoUnit']]" />
   <remove-node api-since="33" path="/api/package[@name='java.util.concurrent']/class[@name='TimeUnit']/method[@name='toChronoUnit' and count(parameter)=0]" />
 
+  <attr path="/api/package[@name='android.view']/class[@name='WindowManager.LayoutParams']/field[@name='systemUiVisibility']" name="deprecated">This property has an incorrect enumeration type. Use the SystemUiFlags property instead.</attr>
+  <attr path="/api/package[@name='android.view']/class[@name='WindowManager.LayoutParams']/field[@name='systemUiVisibility']" name="deprecated-since">0</attr>
+
   <!--
     ***********************************************************************
     THE FOLLOWING LINES MUST BE CREATED FOR ANY NEW PLATFORM THAT IS ADDED.