Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/csharp/src/Google.Protobuf/MessageExtensions.cs

Index: third_party/protobuf/csharp/src/Google.Protobuf/MessageExtensions.cs
diff --git a/third_party/protobuf/csharp/src/Google.Protobuf/MessageExtensions.cs b/third_party/protobuf/csharp/src/Google.Protobuf/MessageExtensions.cs
deleted file mode 100644
index d2d057c0c9204f42be8bbcd681b0f1a8892e4954..0000000000000000000000000000000000000000
--- a/third_party/protobuf/csharp/src/Google.Protobuf/MessageExtensions.cs
+++ /dev/null
@@ -1,157 +0,0 @@
-#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/
-//
-// 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.IO;
-
-namespace Google.Protobuf
-{
-    /// <summary>
-    /// Extension methods on <see cref="IMessage"/> and <see cref="IMessage{T}"/>.
-    /// </summary>
-    public static class MessageExtensions
-    {
-        /// <summary>
-        /// Merges data from the given byte array into an existing message.
-        /// </summary>
-        /// <param name="message">The message to merge the data into.</param>
-        /// <param name="data">The data to merge, which must be protobuf-encoded binary data.</param>
-        public static void MergeFrom(this IMessage message, byte[] data)
-        {
-            Preconditions.CheckNotNull(message, "message");
-            Preconditions.CheckNotNull(data, "data");
-            CodedInputStream input = new CodedInputStream(data);
-            message.MergeFrom(input);
-            input.CheckReadEndOfStreamTag();
-        }
-
-        /// <summary>
-        /// Merges data from the given byte string into an existing message.
-        /// </summary>
-        /// <param name="message">The message to merge the data into.</param>
-        /// <param name="data">The data to merge, which must be protobuf-encoded binary data.</param>
-        public static void MergeFrom(this IMessage message, ByteString data)
-        {
-            Preconditions.CheckNotNull(message, "message");
-            Preconditions.CheckNotNull(data, "data");
-            CodedInputStream input = data.CreateCodedInput();
-            message.MergeFrom(input);
-            input.CheckReadEndOfStreamTag();
-        }
-
-        /// <summary>
-        /// Merges data from the given stream into an existing message.
-        /// </summary>
-        /// <param name="message">The message to merge the data into.</param>
-        /// <param name="input">Stream containing the data to merge, which must be protobuf-encoded binary data.</param>
-        public static void MergeFrom(this IMessage message, Stream input)
-        {
-            Preconditions.CheckNotNull(message, "message");
-            Preconditions.CheckNotNull(input, "input");
-            CodedInputStream codedInput = new CodedInputStream(input);
-            message.MergeFrom(codedInput);
-            codedInput.CheckReadEndOfStreamTag();
-        }
-
-        /// <summary>
-        /// Merges length-delimited data from the given stream into an existing message.
-        /// </summary>
-        /// <remarks>
-        /// The stream is expected to contain a length and then the data. Only the amount of data
-        /// specified by the length will be consumed.
-        /// </remarks>
-        /// <param name="message">The message to merge the data into.</param>
-        /// <param name="input">Stream containing the data to merge, which must be protobuf-encoded binary data.</param>
-        public static void MergeDelimitedFrom(this IMessage message, Stream input)
-        {
-            Preconditions.CheckNotNull(message, "message");
-            Preconditions.CheckNotNull(input, "input");
-            int size = (int) CodedInputStream.ReadRawVarint32(input);
-            Stream limitedStream = new LimitedInputStream(input, size);
-            message.MergeFrom(limitedStream);
-        }
-
-        /// <summary>
-        /// Converts the given message into a byte array in protobuf encoding.
-        /// </summary>
-        /// <param name="message">The message to convert.</param>
-        /// <returns>The message data as a byte array.</returns>
-        public static byte[] ToByteArray(this IMessage message)
-        {
-            Preconditions.CheckNotNull(message, "message");
-            byte[] result = new byte[message.CalculateSize()];
-            CodedOutputStream output = new CodedOutputStream(result);
-            message.WriteTo(output);
-            output.CheckNoSpaceLeft();
-            return result;
-        }
-
-        /// <summary>
-        /// Writes the given message data to the given stream in protobuf encoding.
-        /// </summary>
-        /// <param name="message">The message to write to the stream.</param>
-        /// <param name="output">The stream to write to.</param>
-        public static void WriteTo(this IMessage message, Stream output)
-        {
-            Preconditions.CheckNotNull(message, "message");
-            Preconditions.CheckNotNull(output, "output");
-            CodedOutputStream codedOutput = new CodedOutputStream(output);
-            message.WriteTo(codedOutput);
-            codedOutput.Flush();
-        }
-
-        /// <summary>
-        /// Writes the length and then data of the given message to a stream.
-        /// </summary>
-        /// <param name="message">The message to write.</param>
-        /// <param name="output">The output stream to write to.</param>
-        public static void WriteDelimitedTo(this IMessage message, Stream output)
-        {
-            Preconditions.CheckNotNull(message, "message");
-            Preconditions.CheckNotNull(output, "output");
-            CodedOutputStream codedOutput = new CodedOutputStream(output);
-            codedOutput.WriteRawVarint32((uint)message.CalculateSize());
-            message.WriteTo(codedOutput);
-            codedOutput.Flush();
-        }
-
-        /// <summary>
-        /// Converts the given message into a byte string in protobuf encoding.
-        /// </summary>
-        /// <param name="message">The message to convert.</param>
-        /// <returns>The message data as a byte string.</returns>
-        public static ByteString ToByteString(this IMessage message)
-        {
-            Preconditions.CheckNotNull(message, "message");
-            return ByteString.AttachBytes(message.ToByteArray());
-        }        
-    }
-}