Initial checkin of gRPC to third_party/

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

Index: third_party/grpc/src/csharp/Grpc.Core/KeyCertificatePair.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/DescriptorUtil.cs b/third_party/grpc/src/csharp/Grpc.Core/KeyCertificatePair.cs
similarity index 60%
copy from third_party/protobuf/csharp/src/Google.Protobuf/Reflection/DescriptorUtil.cs
copy to third_party/grpc/src/csharp/Grpc.Core/KeyCertificatePair.cs
index f5570fc40a24f9e91017280b4f6389607be6e1a7..0fb6817986f8390a20ab4c363ef2e0baa8d13e69 100644
--- a/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/DescriptorUtil.cs
+++ b/third_party/grpc/src/csharp/Grpc.Core/KeyCertificatePair.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 2015-2016, 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
@@ -28,37 +28,56 @@
 // 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
 
+using System;
 using System.Collections.Generic;
-using System.Collections.ObjectModel;
 
-namespace Google.Protobuf.Reflection
+using Grpc.Core.Internal;
+using Grpc.Core.Utils;
+
+namespace Grpc.Core
 {
     /// <summary>
-    /// Internal class containing utility methods when working with descriptors.
+    /// Key certificate pair (in PEM encoding).
     /// </summary>
-    internal static class DescriptorUtil
+    public sealed class KeyCertificatePair
     {
+        readonly string certificateChain;
+        readonly string privateKey;
+
         /// <summary>
-        /// Equivalent to Func[TInput, int, TOutput] but usable in .NET 2.0. Only used to convert
-        /// arrays.
+        /// Creates a new certificate chain - private key pair.
         /// </summary>
-        internal delegate TOutput IndexedConverter<TInput, TOutput>(TInput element, int index);
+        /// <param name="certificateChain">PEM encoded certificate chain.</param>
+        /// <param name="privateKey">PEM encoded private key.</param>
+        public KeyCertificatePair(string certificateChain, string privateKey)
+        {
+            this.certificateChain = GrpcPreconditions.CheckNotNull(certificateChain, "certificateChain");
+            this.privateKey = GrpcPreconditions.CheckNotNull(privateKey, "privateKey");
+        }
+
+        /// <summary>
+        /// PEM encoded certificate chain.
+        /// </summary>
+        public string CertificateChain
+        {
+            get
+            {
+                return certificateChain;
+            }
+        }
 
         /// <summary>
-        /// Converts the given array into a read-only list, applying the specified conversion to
-        /// each input element.
+        /// PEM encoded private key.
         /// </summary>
-        internal static IList<TOutput> ConvertAndMakeReadOnly<TInput, TOutput>
-            (IList<TInput> input, IndexedConverter<TInput, TOutput> converter)
+        public string PrivateKey
         {
-            TOutput[] array = new TOutput[input.Count];
-            for (int i = 0; i < array.Length; i++)
+            get
             {
-                array[i] = converter(input[i], i);
+                return privateKey;
             }
-            return new ReadOnlyCollection<TOutput>(array);
         }
     }
-}
+}