Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Workflow.Runtime/DebugEngine/IWorkflowDebuggerService.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Workflow.ComponentModel;
+
+namespace System.Workflow.Runtime.DebugEngine
+{
+    [Obsolete("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
+    public interface IWorkflowDebuggerService
+    {
+        void NotifyHandlerInvoking(Delegate delegateHandler);
+        void NotifyHandlerInvoked();
+    }
+
+    internal sealed class WorkflowDebuggerService : IWorkflowDebuggerService
+    {
+        private IWorkflowCoreRuntime coreRuntime;
+
+        internal WorkflowDebuggerService(IWorkflowCoreRuntime coreRuntime)
+        {
+            if (coreRuntime == null)
+                throw new ArgumentNullException("coreRuntime");
+
+            this.coreRuntime = coreRuntime;
+        }
+
+        void IWorkflowDebuggerService.NotifyHandlerInvoking(Delegate delegateHandler)
+        {
+            this.coreRuntime.RaiseHandlerInvoking(delegateHandler);
+        }
+
+        void IWorkflowDebuggerService.NotifyHandlerInvoked()
+        {
+            this.coreRuntime.RaiseHandlerInvoked();
+        }
+    }
+}