third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/js/debug_test.js

 // 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.
@@ skipping 47 matching lines @@
     message.setABoolean(true);
     message.setARepeatedStringList(['1', '2']);
 
     assertObjectEquals({
       $name: 'proto.jspb.test.Simple1',
       'aString': 'foo',
       'aRepeatedStringList': ['1', '2'],
       'aBoolean': true
     }, jspb.debug.dump(message));
 
-    message.setAString(undefined);
+    message.clearAString();
 
     assertObjectEquals({
       $name: 'proto.jspb.test.Simple1',
       'aRepeatedStringList': ['1', '2'],
       'aBoolean': true
     }, jspb.debug.dump(message));
   });
 
 
   it('testExtensions', function() {
@@ skipping 17 matching lines @@
         'extField': {
           '$name': 'proto.jspb.test.IsExtension',
           'ext1': 'ext1field'
         },
         'repeatedSimpleList': []
       }
     }, jspb.debug.dump(extendable));
   });
 
 });