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

third_party/protobuf/src/google/protobuf/util/internal/testdata/field_mask.proto

Index: third_party/protobuf/src/google/protobuf/util/internal/testdata/field_mask.proto
diff --git a/third_party/protobuf/src/google/protobuf/util/internal/testdata/field_mask.proto b/third_party/protobuf/src/google/protobuf/util/internal/testdata/field_mask.proto
deleted file mode 100644
index e8b2bc5f2e29157e8730ef5afcadf33921e1af06..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/util/internal/testdata/field_mask.proto
+++ /dev/null
@@ -1,71 +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.
-
-syntax = "proto3";
-
-package google.protobuf.testing;
-
-import "google/protobuf/field_mask.proto";
-
-message NestedFieldMask {
-  string data = 1;
-  google.protobuf.FieldMask single_mask = 2;
-  repeated google.protobuf.FieldMask repeated_mask = 3;
-}
-
-message FieldMaskTest {
-  string id = 1;
-  google.protobuf.FieldMask single_mask = 2;
-  repeated google.protobuf.FieldMask repeated_mask = 3;
-  repeated NestedFieldMask nested_mask = 4;
-}
-
-message FieldMaskTestCases {
-  FieldMaskWrapper single_mask = 1;
-  FieldMaskWrapper multiple_mask = 2;
-  FieldMaskWrapper snake_camel = 3;
-  FieldMaskWrapper empty_field = 4;
-  FieldMaskWrapper apiary_format1 = 5;
-  FieldMaskWrapper apiary_format2 = 6;
-  FieldMaskWrapper apiary_format3 = 7;
-  FieldMaskWrapper map_key1 = 8;
-  FieldMaskWrapper map_key2 = 9;
-  FieldMaskWrapper map_key3 = 10;
-  FieldMaskWrapper map_key4 = 11;
-  FieldMaskWrapper map_key5 = 12;
-}
-
-message FieldMaskWrapper {
-  google.protobuf.FieldMask mask = 1;
-}
-
-service FieldMaskTestService {
-  rpc Call(FieldMaskTestCases) returns (FieldMaskTestCases);
-}