[Appkit] Update to Xcode 9.3 beta 2 (#3433)

src/appkit.cs

@@ -2088,7 +2088,7 @@ namespace XamCore.AppKit {
 	}
 	
 	[BaseType (typeof (NSControl))]
-	interface NSButton : NSAccessibilityButton {
+	interface NSButton : NSAccessibilityButton, NSUserInterfaceCompression {
 		[Export ("initWithFrame:")]
 		IntPtr Constructor (CGRect frameRect);
 
@@ -13693,6 +13693,10 @@ namespace XamCore.AppKit {
 
 		[Export ("customizationLabel")]
 		string CustomizationLabel { get; set; }
+
+		[Mac (10,13)]
+		[Export ("view")]
+		INSUserInterfaceCompression View { get; }
 	}
 	
 	[BaseType (typeof (NSObject))]
@@ -26015,6 +26019,8 @@ namespace XamCore.AppKit {
 		NSUserInterfaceCompressionOptions StandardOptions { get; }
 	}
 
+	interface INSUserInterfaceCompression { }
+
 	[Mac (10, 13)]
 	[Protocol]
 	interface NSUserInterfaceCompression

tests/xtro-sharpie/macOS-AppKit.todo

@@ -1,5 +0,0 @@
-!missing-protocol-conformance! NSButton should conform to NSUserInterfaceCompression
-!missing-selector! NSButton::activeCompressionOptions not bound
-!missing-selector! NSButton::compressWithPrioritizedCompressionOptions: not bound
-!missing-selector! NSButton::minimumSizeWithPrioritizedCompressionOptions: not bound
-!missing-selector! NSSliderTouchBarItem::view not bound