Initial checkin of gRPC to third_party/

third_party/grpc/src/csharp/Grpc.Core/IServerStreamWriter.cs

Index: third_party/grpc/src/csharp/Grpc.Core/IServerStreamWriter.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/WrappersPartial.cs b/third_party/grpc/src/csharp/Grpc.Core/IServerStreamWriter.cs
similarity index 76%
copy from third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/WrappersPartial.cs
copy to third_party/grpc/src/csharp/Grpc.Core/IServerStreamWriter.cs
index 9f620eb4012e35421383ce544f51d7087f4100a1..9f3af59109b2083205a659af5bc3d0503fe75ad5 100644
--- a/third_party/protobuf/csharp/src/Google.Protobuf/WellKnownTypes/WrappersPartial.cs
+++ b/third_party/grpc/src/csharp/Grpc.Core/IServerStreamWriter.cs
@@ -1,7 +1,7 @@
 #region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -28,15 +28,22 @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 #endregion
 
-namespace Google.Protobuf.WellKnownTypes
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Grpc.Core
 {
-    public static partial class WrappersReflection
+    /// <summary>
+    /// A writable stream of messages that is used in server-side handlers.
+    /// </summary>
+    public interface IServerStreamWriter<T> : IAsyncStreamWriter<T>
     {
-        /// <summary>
-        /// Field number for the single "value" field in all wrapper types.
-        /// </summary>
-        internal const int WrapperValueFieldNumber = Int32Value.ValueFieldNumber;
+        // TODO(jtattermusch): consider just using IAsyncStreamWriter instead of this interface.
     }
 }