Update //third_party/protobuf to version 3.

third_party/protobuf/csharp/src/Google.Protobuf/Reflection/ServiceDescriptor.cs

+#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/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// 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;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Describes a service type.
+    /// </summary>
+    public sealed class ServiceDescriptor : DescriptorBase
+    {
+        private readonly ServiceDescriptorProto proto;
+        private readonly IList<MethodDescriptor> methods;
+
+        internal ServiceDescriptor(ServiceDescriptorProto proto, FileDescriptor file, int index)
+            : base(file, file.ComputeFullName(null, proto.Name), index)
+        {
+            this.proto = proto;
+            methods = DescriptorUtil.ConvertAndMakeReadOnly(proto.Method,
+                                                            (method, i) => new MethodDescriptor(method, file, this, i));
+
+            file.DescriptorPool.AddSymbol(this);
+        }
+
+        /// <summary>
+        /// The brief name of the descriptor's target.
+        /// </summary>
+        public override string Name { get { return proto.Name; } }
+
+        internal ServiceDescriptorProto Proto { get { return proto; } }
+
+        /// <value>
+        /// An unmodifiable list of methods in this service.
+        /// </value>
+        public IList<MethodDescriptor> Methods
+        {
+            get { return methods; }
+        }
+
+        /// <summary>
+        /// Finds a method by name.
+        /// </summary>
+        /// <param name="name">The unqualified name of the method (e.g. "Foo").</param>
+        /// <returns>The method's decsriptor, or null if not found.</returns>
+        public MethodDescriptor FindMethodByName(String name)
+        {
+            return File.DescriptorPool.FindSymbol<MethodDescriptor>(FullName + "." + name);
+        }
+
+        internal void CrossLink()
+        {
+            foreach (MethodDescriptor method in methods)
+            {
+                method.CrossLink();
+            }
+        }
+    }
+}