MPNowPlayingInfo is available on iOS,MacOS, and TvOS (#2178)

* Added MPNowPlaying info to MacOS/TvOS

src/MediaPlayer/MPNowPlayingInfoCenter.cs

@@ -7,8 +7,8 @@
 // Copyright 2011, Xamarin Inc
 //
 
-#if !TVOS && !MONOMAC
 
+#if XAMCORE_2_0
 using XamCore.Foundation;
 using XamCore.ObjCRuntime;
 
@@ -229,4 +229,4 @@ namespace XamCore.MediaPlayer {
 	}
 }
 
-#endif // !TVOS
+#endif

src/MediaPlayer/MediaPlayer.cs

@@ -97,10 +97,8 @@ namespace XamCore.MediaPlayer {
 	}
 
 	// NSUInteger -> MPMediaItem.h
-	[NoMac]
 	[Native]
 	[Flags]
-	[NoTV]
 	public enum MPMediaType : nuint_compat_int {
 #if !XAMCORE_2_0
 		[Obsolete ("Use Shorter name Music")]
@@ -119,18 +117,25 @@ namespace XamCore.MediaPlayer {
 		AnyAudio     = 0x00ff,
 		
 		[iOS (5,0)]
+		[Mac (10,12,2)]
 		Movie = 1 << 8,
 		[iOS (5,0)]
+		[Mac (10,12,2)]
 		TVShow = 1 << 9,
 		[iOS (5,0)]
+		[Mac (10,12,2)]
 		VideoPodcast = 1 << 10,
 		[iOS (5,0)]
+		[Mac (10,12,2)]
 		MusicVideo = 1 << 11,
 		[iOS (5,0)]
+		[Mac (10,12,2)]
 		VideoITunesU = 1 << 12,
 		[iOS (7,0)]
+		[Mac (10,12,2)]
 		HomeVideo = 1 << 13,
 		[iOS (5,0)]
+		[Mac (10,12,2)]
 		TypeAnyVideo = 0xff00,
 #if XAMCORE_2_0
 		Any          = 0xFFFFFFFFFFFFFFFF
@@ -319,6 +324,7 @@ namespace XamCore.MediaPlayer {
 
 	[Mac (10,12,2)]
 	[iOS (10,0)]
+	[TV (10,0)]
 	[Native]
 	public enum MPNowPlayingInfoMediaType : nuint
 	{

src/mediaplayer.cs

@@ -51,20 +51,28 @@ namespace XamCore.MediaPlayer {
 
 #if XAMCORE_2_0
 	}
-
-	[NoMac]
-	[NoTV]
+#if MONOMAC || TVOS
+	[Mac (10,12,2, onlyOn64: true)]
+	[Static]
+#else
 	[BaseType (typeof (MPMediaEntity))]
+#endif
 	interface MPMediaItem {
 #endif
+
+#if !MONOMAC
 		[Since (4,2)]
+		[NoMac]
+		[NoTV]
 		[Export ("persistentIDPropertyForGroupingType:")][Static]
 		string GetPersistentIDProperty (MPMediaGrouping groupingType);
 
 		[Since (4,2)]
+		[NoMac]
+		[NoTV]
 		[Export ("titlePropertyForGroupingType:")][Static]
 		string GetTitleProperty (MPMediaGrouping groupingType);
-
+#endif
 		[Since (3,0)]
 		[Field ("MPMediaItemPropertyPersistentID")]
 		[EditorBrowsable (EditorBrowsableState.Advanced)]
@@ -1369,6 +1377,7 @@ namespace XamCore.MediaPlayer {
 		NSString PropertyDefaultPlaybackRate { get; }
 
 		[iOS (9,0)]
+		[TV (10,0)]
 		[Internal]
 		[Field ("MPNowPlayingInfoPropertyAvailableLanguageOptions")]
 		NSString PropertyAvailableLanguageOptions { get; }
@@ -1409,7 +1418,7 @@ namespace XamCore.MediaPlayer {
 		NSString PropertyIsLiveStream { get; }
 
 		[iOS (10,3)]
-		[Mac (10,12,3)]
+		[TV (10,2)]
 		[Field ("MPNowPlayingInfoPropertyAssetURL")]
 		NSString PropertyAssetUrl { get; }
 	}