third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/csharp/src/Google.Protobuf.Test/Compatibility/TypeExtensionsTest.cs

Index: third_party/protobuf/csharp/src/Google.Protobuf.Test/Compatibility/TypeExtensionsTest.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf.Test/Compatibility/TypeExtensionsTest.cs b/third_party/protobuf/csharp/src/Google.Protobuf.Test/Compatibility/TypeExtensionsTest.cs
index f0c8d3bcc6e3d194b9a3fac124ae507773501d56..f430b06beda3cc0ffc7477abde068a1634a1f4d5 100644
--- a/third_party/protobuf/csharp/src/Google.Protobuf.Test/Compatibility/TypeExtensionsTest.cs
+++ b/third_party/protobuf/csharp/src/Google.Protobuf.Test/Compatibility/TypeExtensionsTest.cs
@@ -34,6 +34,7 @@ using System;
 using System.Collections.Generic;
 using System.Reflection;
 
+#if !DOTNET35
 namespace Google.Protobuf.Compatibility
 {
     public class TypeExtensionsTest
@@ -51,24 +52,6 @@ namespace Google.Protobuf.Compatibility
         }
 
         [Test]
-        [TestCase(typeof(int), true)]
-        [TestCase(typeof(int?), true)]
-        [TestCase(typeof(Nullable<>), true)]
-        [TestCase(typeof(WireFormat.WireType), true)]
-        [TestCase(typeof(string), false)]
-        [TestCase(typeof(object), false)]
-        [TestCase(typeof(Enum), false)]
-        [TestCase(typeof(ValueType), false)]
-        [TestCase(typeof(TypeExtensionsTest), false)]
-        [TestCase(typeof(Action), false)]
-        [TestCase(typeof(Action<>), false)]
-        [TestCase(typeof(IDisposable), false)]
-        public void IsValueType(Type type, bool expected)
-        {
-            Assert.AreEqual(expected, TypeExtensions.IsValueType(type));
-        }
-
-        [Test]
         [TestCase(typeof(object), typeof(string), true)]
         [TestCase(typeof(object), typeof(int), true)]
         [TestCase(typeof(string), typeof(string), true)]
@@ -131,3 +114,4 @@ namespace Google.Protobuf.Compatibility
         }
     }
 }
+#endif