Update //third_party/protobuf to version 3.

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

Index: third_party/protobuf/csharp/src/Google.Protobuf/Reflection/FieldAccessorBase.cs
diff --git a/third_party/protobuf/src/google/protobuf/testing/zcgunzip.cc b/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/FieldAccessorBase.cs
similarity index 58%
copy from third_party/protobuf/src/google/protobuf/testing/zcgunzip.cc
copy to third_party/protobuf/csharp/src/Google.Protobuf/Reflection/FieldAccessorBase.cs
index a6197854bdef63dc11bbdf0b3cf1f7884348b0e3..82ce50518d8e999452493de6bd5efae4871bbdde 100644
--- a/third_party/protobuf/src/google/protobuf/testing/zcgunzip.cc
+++ b/third_party/protobuf/csharp/src/Google.Protobuf/Reflection/FieldAccessorBase.cs
@@ -1,6 +1,7 @@
+#region Copyright notice and license
 // Protocol Buffers - Google's data interchange format
-// Copyright 2009 Google Inc.  All rights reserved.
-// http://code.google.com/p/protobuf/
+// Copyright 2015 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
@@ -27,47 +28,36 @@
 // 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.
-
-// Author: brianolson@google.com (Brian Olson)
-//  Based on original Protocol Buffers design by
-//  Sanjay Ghemawat, Jeff Dean, and others.
-//
-// Test program to verify that GzipInputStream is compatible with command line
-// gunzip or java.util.zip.GzipInputStream
-//
-// Reads gzip stream on standard input and writes decompressed data to standard
-// output.
-
-#include "config.h"
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-
-#include <google/protobuf/io/gzip_stream.h>
-#include <google/protobuf/io/zero_copy_stream_impl.h>
-
-using google::protobuf::io::FileInputStream;
-using google::protobuf::io::GzipInputStream;
-
-int main(int argc, const char** argv) {
-  FileInputStream fin(STDIN_FILENO);
-  GzipInputStream in(&fin);
-
-  while (true) {
-    const void* inptr;
-    int inlen;
-    bool ok;
-    ok = in.Next(&inptr, &inlen);
-    if (!ok) {
-      break;
+#endregion
+
+using System;
+using System.Reflection;
+using Google.Protobuf.Compatibility;
+
+namespace Google.Protobuf.Reflection
+{
+    /// <summary>
+    /// Base class for field accessors.
+    /// </summary>
+    internal abstract class FieldAccessorBase : IFieldAccessor
+    {
+        private readonly Func<IMessage, object> getValueDelegate;
+        private readonly FieldDescriptor descriptor;
+
+        internal FieldAccessorBase(PropertyInfo property, FieldDescriptor descriptor)
+        {
+            this.descriptor = descriptor;
+            getValueDelegate = ReflectionUtil.CreateFuncIMessageObject(property.GetGetMethod());
+        }
+
+        public FieldDescriptor Descriptor { get { return descriptor; } }
+
+        public object GetValue(IMessage message)
+        {
+            return getValueDelegate(message);
+        }
+
+        public abstract void Clear(IMessage message);
+        public abstract void SetValue(IMessage message, object value);
     }
-    if (inlen > 0) {
-      int err = write(STDOUT_FILENO, inptr, inlen);
-      assert(err == inlen);
-    }
-  }
-
-  return 0;
 }