Update third_party/protobuf to protobuf-v3.0.0-beta-3

third_party/protobuf/csharp/src/Google.Protobuf.Test/TestProtos/ForeignMessagePartial.cs

Index: third_party/protobuf/csharp/src/Google.Protobuf.Test/TestProtos/ForeignMessagePartial.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/WrappersPartial.cs b/third_party/protobuf/csharp/src/Google.Protobuf.Test/TestProtos/ForeignMessagePartial.cs
similarity index 81%
copy from third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/WrappersPartial.cs
copy to third_party/protobuf/csharp/src/Google.Protobuf.Test/TestProtos/ForeignMessagePartial.cs
index 9f620eb4012e35421383ce544f51d7087f4100a1..5663a69902e59858b1fa8b170f652fadb0b595a8 100644
--- a/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/WrappersPartial.cs
+++ b/third_party/protobuf/csharp/src/Google.Protobuf.Test/TestProtos/ForeignMessagePartial.cs
@@ -1,6 +1,6 @@
 #region Copyright notice and license
 // Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
+// Copyright 2016 Google Inc.  All rights reserved.
 // https://developers.google.com/protocol-buffers/
 //
 // Redistribution and use in source and binary forms, with or without
@@ -30,13 +30,16 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #endregion
 
-namespace Google.Protobuf.WellKnownTypes
+namespace Google.Protobuf.TestProtos
 {
-    public static partial class WrappersReflection
+    /// <summary>
+    /// A message with custom diagnostics (to test that they work).
+    /// </summary>
+    public partial class ForeignMessage : ICustomDiagnosticMessage
     {
-        /// <summary>
-        /// Field number for the single "value" field in all wrapper types.
-        /// </summary>
-        internal const int WrapperValueFieldNumber = Int32Value.ValueFieldNumber;
+        public string ToDiagnosticString()
+        {
+            return $"{{ \"c\": {C}, \"@cInHex\": \"{C:x}\" }}";
+        }
     }
 }