[localauthentication] Update for Xcode 11 beta 1-3 (#6574)

src/LocalAuthentication/LAEnums.cs

@@ -10,7 +10,11 @@ namespace LocalAuthentication {
 	public enum LAPolicy : long {
 		[Mac (10,12,2)]
 		DeviceOwnerAuthenticationWithBiometrics = 1,
-		DeviceOwnerAuthentication = 2
+		DeviceOwnerAuthentication = 2,
+		[NoiOS][Mac (10,15, onlyOn64: true)][Introduced (PlatformName.UIKitForMac, 13,0)]
+		DeviceOwnerAuthenticationWithWatch = 3,
+		[NoiOS][Mac (10,15, onlyOn64: true)][Introduced (PlatformName.UIKitForMac, 13,0)]
+		OwnerAuthenticationWithBiometricsOrWatch = 4,
 	}
 
 	[iOS (8,0)]
@@ -44,6 +48,7 @@ namespace LocalAuthentication {
 		TouchIDLockout       = -8,
 		AppCancel            = -9,
 		InvalidContext       = -10,
+		WatchNotAvailable    = -11,
 
 		BiometryNotAvailable = TouchIDNotAvailable,
 		BiometryNotEnrolled = TouchIDNotEnrolled,

src/localauthentication.cs

@@ -10,7 +10,7 @@ namespace LocalAuthentication {
 	public enum LABiometryType : long {
 		None,
 		TouchId,
-		[NoMac]
+		[Mac (10,15, onlyOn64: true)]
 		FaceId,
 #if !XAMCORE_4_0
 		[NoMac]