third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/src/google/protobuf/unittest.proto

Index: third_party/protobuf/src/google/protobuf/unittest.proto
diff --git a/third_party/protobuf/src/google/protobuf/unittest.proto b/third_party/protobuf/src/google/protobuf/unittest.proto
index da56ae0a2449c6396b4963995b73fbcbcdb006d9..96289cc55bdad443c2bc56d408edaeca00814e69 100644
--- a/third_party/protobuf/src/google/protobuf/unittest.proto
+++ b/third_party/protobuf/src/google/protobuf/unittest.proto
@@ -195,6 +195,7 @@ message TestDeprecatedFields {
 // that.
 message ForeignMessage {
   optional int32 c = 1;
+  optional int32 d = 2;
 }
 
 enum ForeignEnum {
@@ -877,3 +878,42 @@ service TestService {
 message BarRequest  {}
 message BarResponse {}
 
+message TestJsonName {
+  optional int32 field_name1 = 1;
+  optional int32 fieldName2 = 2;
+  optional int32 FieldName3 = 3;
+  optional int32 _field_name4 = 4;
+  optional int32 FIELD_NAME5 = 5;
+  optional int32 field_name6 = 6 [json_name = "@type"];
+}
+
+message TestHugeFieldNumbers {
+  optional int32 optional_int32 = 536870000;
+  optional int32 fixed_32 = 536870001;
+  repeated int32 repeated_int32 = 536870002 [packed = false];
+  repeated int32 packed_int32 = 536870003 [packed = true];
+
+  optional ForeignEnum optional_enum = 536870004;
+  optional string optional_string = 536870005;
+  optional bytes optional_bytes = 536870006;
+  optional ForeignMessage optional_message = 536870007;
+
+  optional group OptionalGroup = 536870008 {
+    optional int32 group_a = 536870009;
+  }
+
+  map<string, string> string_string_map = 536870010;
+
+  oneof oneof_field {
+    uint32 oneof_uint32 = 536870011;
+    TestAllTypes oneof_test_all_types = 536870012;
+    string oneof_string = 536870013;
+    bytes oneof_bytes = 536870014;
+  }
+
+  extensions  536860000 to 536869999;
+}
+
+extend TestHugeFieldNumbers {
+  optional TestAllTypes test_all_types = 536860000;
+}