Internalize ICommandLineComponentFactory

Author: TomFinley

src/Microsoft.ML.Core/CommandLine/CmdParser.cs

@@ -40,7 +40,8 @@ internal enum SettingsFlags
     ///
     /// This allows components to be created by name, signature type, and a settings string.
     /// </summary>
-    public interface ICommandLineComponentFactory : IComponentFactory
+    [BestFriend]
+    internal interface ICommandLineComponentFactory : IComponentFactory
     {
         Type SignatureType { get; }
         string Name { get; }

src/Microsoft.ML.Data/Commands/ScoreCommand.cs

@@ -232,7 +232,8 @@ private bool ShouldAddColumn(Schema schema, int i, uint scoreSet, bool outputNam
         }
     }
 
-    public static class ScoreUtils
+    [BestFriend]
+    internal static class ScoreUtils
     {
         public static IDataScorerTransform GetScorer(IPredictor predictor, RoleMappedData data, IHostEnvironment env, RoleMappedSchema trainSchema)
         {