Do not trim refs

TestAssets/TestProjects/DependencyContextValidator/TestAppPortable/Program.cs

@@ -0,0 +1,16 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.Diagnostics;
+
+namespace TestApp
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            Microsoft.Extensions.DependencyModel.DependencyContextValidator.Validate(true);
+        }
+    }
+}

TestAssets/TestProjects/DependencyContextValidator/TestAppPortable/project.json

@@ -0,0 +1,19 @@
+{
+  "version": "1.0.0-*",
+  "compilationOptions": {
+    "emitEntryPoint": true,
+    "preserveCompilationContext": true
+  },
+  "dependencies": {
+    "Microsoft.NETCore.App": {
+        "type": "platform",
+        "version": "1.0.0-rc2-23931"
+    },
+    "DependencyContextValidator": "1.0.0-*"
+  },
+  "frameworks": {
+    "netstandard1.5": {
+      "imports" : "dnxcore50"
+    }
+  }
+}