Imported Upstream version 4.2.0.179

Former-commit-id: 0a113cb3a6feb7873f632839b1307cc6033cd595

mcs/class/System.Runtime.Serialization/ReferenceSources/FxTrace.cs

@@ -0,0 +1,36 @@
+//
+// bare-bones based implementation based on the references
+// from the Microsoft reference source code to get things to build
+//
+using System.Runtime;
+using System.Runtime.Diagnostics;
+
+namespace System.Runtime.Serialization {
+	internal static class FxTrace {
+		public static EtwDiagnosticTrace Trace {
+			get {
+				return Fx.Trace;
+			}
+		}
+
+		public static bool ShouldTraceError = true;
+		public static bool ShouldTraceVerbose = true;
+
+		static ExceptionTrace exception;
+		public static ExceptionTrace Exception {
+			get {
+				if (exception == null)
+					return new ExceptionTrace ("System.Runtime.Serialization", Trace);
+				return exception;
+			}
+		}
+
+		public static bool IsEventEnabled (int index)
+		{
+			return false;
+		}
+
+		public static void UpdateEventDefinitions (EventDescriptor [] ed, ushort [] events) {}
+	}
+}
+