Imported Upstream version 6.4.0.137

Former-commit-id: 943baa9f16a098c33e129777827f3a9d20da00d6

mcs/class/corlib/corefx/IncrementingEventCounter.cs

@@ -0,0 +1,13 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace System.Diagnostics.Tracing
+{
+    public partial class IncrementingEventCounter : DiagnosticCounter
+    {
+        public IncrementingEventCounter (string name, EventSource eventSource) : base (name, eventSource) {}
+        public void Increment (double increment = 1) {}
+        public TimeSpan DisplayRateTimeScale { get; set; }
+    }
+}