third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/js/commonjs/export.js

Index: third_party/protobuf/js/commonjs/export.js
diff --git a/third_party/protobuf/js/commonjs/export.js b/third_party/protobuf/js/commonjs/export.js
index a3cfbd6f1dbbad1d2c65744cd4d902a80743451f..2403b1a490ccc4c0b9def7a18719da73a8441d8d 100644
--- a/third_party/protobuf/js/commonjs/export.js
+++ b/third_party/protobuf/js/commonjs/export.js
@@ -8,13 +8,17 @@
 goog.require('goog.object');
 goog.require('jspb.BinaryReader');
 goog.require('jspb.BinaryWriter');
+goog.require('jspb.ExtensionFieldBinaryInfo');
 goog.require('jspb.ExtensionFieldInfo');
 goog.require('jspb.Message');
+goog.require('jspb.Map');
 
+exports.Map = jspb.Map;
 exports.Message = jspb.Message;
 exports.BinaryReader = jspb.BinaryReader;
 exports.BinaryWriter = jspb.BinaryWriter;
 exports.ExtensionFieldInfo = jspb.ExtensionFieldInfo;
+exports.ExtensionFieldBinaryInfo = jspb.ExtensionFieldBinaryInfo;
 
 // These are used by generated code but should not be used directly by clients.
 exports.exportSymbol = goog.exportSymbol;