Initial checkin of gRPC to third_party/

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

Index: third_party/grpc/src/csharp/Grpc.Core/IAsyncStreamWriter.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/IDeepCloneable.cs b/third_party/grpc/src/csharp/Grpc.Core/IAsyncStreamWriter.cs
similarity index 66%
copy from third_party/protobuf/csharp/src/Google.Protobuf/IDeepCloneable.cs
copy to third_party/grpc/src/csharp/Grpc.Core/IAsyncStreamWriter.cs
index c9c71bbe2c013465f3375cbc26f2c301bf67824d..9c0d2d312ebde149c9ee82d019c60cf1f6ec3a89 100644
--- a/third_party/protobuf/csharp/src/Google.Protobuf/IDeepCloneable.cs
+++ b/third_party/grpc/src/csharp/Grpc.Core/IAsyncStreamWriter.cs
@@ -1,7 +1,7 @@
 #region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2015 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
@@ -28,27 +28,35 @@
 // 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
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Grpc.Core
 {
     /// <summary>
-    /// Generic interface for a deeply cloneable type.
+    /// A writable stream of messages.
     /// </summary>
-    /// <remarks>
-    /// <para>
-    /// All generated messages implement this interface, but so do some non-message types.
-    /// Additionally, due to the type constraint on <c>T</c> in <see cref="IMessage{T}"/>,
-    /// it is simpler to keep this as a separate interface.
-    /// </para>
-    /// </remarks>
-    /// <typeparam name="T">The type itself, returned by the <see cref="Clone"/> method.</typeparam>
-    public interface IDeepCloneable<T>
+    /// <typeparam name="T">The message type.</typeparam>
+    public interface IAsyncStreamWriter<T>
     {
         /// <summary>
-        /// Creates a deep clone of this object.
+        /// Writes a single asynchronously. Only one write can be pending at a time.
+        /// </summary>
+        /// <param name="message">the message to be written. Cannot be null.</param>
+        Task WriteAsync(T message);
+
+        /// <summary>
+        /// Write options that will be used for the next write.
+        /// If null, default options will be used.
+        /// Once set, this property maintains its value across subsequent
+        /// writes.
         /// </summary>
-        /// <returns>A deep clone of this object.</returns>
-        T Clone();
+        WriteOptions WriteOptions { get; set; }
     }
 }