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

third_party/protobuf/src/google/protobuf/util/message_differencer_unittest.proto

Index: third_party/protobuf/src/google/protobuf/util/message_differencer_unittest.proto
diff --git a/third_party/protobuf/src/google/protobuf/util/message_differencer_unittest.proto b/third_party/protobuf/src/google/protobuf/util/message_differencer_unittest.proto
deleted file mode 100644
index 698775f14cc4706550b82a34c9ec063b0612a1c0..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/util/message_differencer_unittest.proto
+++ /dev/null
@@ -1,74 +0,0 @@
-// 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.
-
-// Author: kenton@google.com (Kenton Varda)
-//  Based on original Protocol Buffers design by
-//  Sanjay Ghemawat, Jeff Dean, and others.
-//
-// This file contains messages for testing repeated field comparison
-
-syntax = "proto2";
-package protobuf_unittest;
-
-option optimize_for = SPEED;
-
-message TestField {
-  optional int32 a = 3;
-  optional int32 b = 4;
-  optional int32 c = 1;
-  repeated int32 rc = 2;
-  optional TestField m = 5;
-
-  extend TestDiffMessage {
-    optional TestField tf = 100;
-  }
-}
-
-message TestDiffMessage {
-  repeated group Item = 1 {
-    optional int32  a  =  2;     // Test basic repeated field comparison.
-    optional string b  =  4;     // Test basic repeated field comparison.
-    repeated int32  ra =  3;     // Test SetOfSet Comparison.
-    repeated string rb =  5;     // Test TreatAsMap when key is repeated
-    optional TestField m  = 6;   // Test TreatAsMap when key is a message
-    repeated TestField rm = 7;   // Test TreatAsMap when key is a repeated
-                                 // message
-  }
-
-  optional int32  v  = 13 [deprecated = true];
-  optional string w  = 14;
-  optional TestField m  = 15;
-  repeated int32  rv = 11;       // Test for combinations
-  repeated string rw = 10;       // Test for combinations
-  repeated TestField rm = 12 [deprecated = true];    // Test for combinations
-
-  extensions 100 to 199;
-}
-