third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/objectivec/Tests/unittest_extension_chain_d.proto

Index: third_party/protobuf/objectivec/Tests/unittest_extension_chain_d.proto
diff --git a/third_party/protobuf/src/google/protobuf/util/internal/testdata/anys.proto b/third_party/protobuf/objectivec/Tests/unittest_extension_chain_d.proto
similarity index 75%
copy from third_party/protobuf/src/google/protobuf/util/internal/testdata/anys.proto
copy to third_party/protobuf/objectivec/Tests/unittest_extension_chain_d.proto
index 18c59cbb96308c72f0a1d432a2ef79d81fccbdb6..f9abe3ba5967d65fb2ca31fe5bb260ceeae9f7ff 100644
--- a/third_party/protobuf/src/google/protobuf/util/internal/testdata/anys.proto
+++ b/third_party/protobuf/objectivec/Tests/unittest_extension_chain_d.proto
@@ -1,6 +1,5 @@
 // Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
+// Copyright 2016 Google Inc.  All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -28,26 +27,23 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Proto to test Proto3 Any serialization.
-syntax = "proto3";
+syntax = "proto2";
 
-package google.protobuf.testing.anys;
-option java_package = "com.google.protobuf.testing.anys";
+package protobuf_unittest;
 
-import "google/protobuf/any.proto";
+import "google/protobuf/unittest.proto";
 
-message AnyIn {
-  string something = 1;
-}
+import "unittest_extension_chain_b.proto";
+import "unittest_extension_chain_c.proto";
 
-message AnyOut {
-  google.protobuf.Any any = 1;
-}
+// The root should end up needing to merge B (C will be merged into B, so it
+// doesn't need to be directly merged).
 
-message AnyM {
-  string foo = 1;
+message ChainDMessage {
+  optional ChainBMessage b = 1;
+  optional ChainCMessage c = 2;
 }
 
-service TestService {
-  rpc Call(AnyIn) returns (AnyOut);
+extend TestAllExtensions {
+  optional int32 chain_d_extension = 10004;
 }